Xen 2015-10-19
# gpg: Signature made Mon 19 Oct 2015 11:24:05 BST using RSA key ID 70E1AE90
# gpg: Good signature from "Stefano Stabellini <stefano.stabellini@eu.citrix.com>"
* remotes/sstabellini/tags/2015-10-19-tag:
xen-platform: Ensure xen is enabled when initializing
pc: Require xen when initializing xenfv machine
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The xen-platform code crashes on reset if the xen backend is not
initialized, because it calls xc_hvm_set_mem_type(). Ensure xen-platform
won't be created without initializing the xen backend.
The assert can't be triggered by the user because the device is not
hotpluggable, and the only code creating it (at pc_xen_hvm_init())
already checks xen_enabled().
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Without this check, the xen-platform device will crash on reset
if using the accel option with anything other than xen (e.g.
"-machine xenfv,accel=kvm").
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
* KVM page size fix for PPC
* Support for Linux 4.4's new Hyper-V features
* Eliminate g_slice from areas I maintain
* checkpatch fix
* Peter's cpu_reload_memory_map() cleanups
* More changes to MAINTAINERS
* Require Python 2.6
* chardev creation fixes
* PCI requester id for ARM KVM
* cleanups and doc fixes
* Allow customization of the Hyper-V vendor id
# gpg: Signature made Mon 19 Oct 2015 09:13:10 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
* remotes/bonzini/tags/for-upstream: (49 commits)
kvm: Allow the Hyper-V vendor ID to be specified
kvm: Move x86-specific functions into target-i386/kvm.c
kvm: Pass PCI device pointer to MSI routing functions
hw/pci: Introduce pci_requester_id()
kvm: Make KVM_CAP_SIGNAL_MSI globally available
doc/rcu: fix g_free_rcu() usage example
qemu-char: cleanup after completed conversion to cd->create
qemu-char: convert ringbuf backend to data-driven creation
qemu-char: convert vc backend to data-driven creation
qemu-char: convert spice backend to data-driven creation
qemu-char: convert console backend to data-driven creation
qemu-char: convert stdio backend to data-driven creation
qemu-char: convert testdev backend to data-driven creation
qemu-char: convert braille backend to data-driven creation
qemu-char: convert msmouse backend to data-driven creation
qemu-char: convert mux backend to data-driven creation
qemu-char: convert null backend to data-driven creation
qemu-char: convert pty backend to data-driven creation
qemu-char: convert UDP backend to data-driven creation
qemu-char: convert socket backend to data-driven creation
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
According to Microsoft documentation, the signature in the standard
hypervisor CPUID leaf at 0x40000000 identifies the Vendor ID and is
for reporting and diagnostic purposes only. We can therefore allow
the user to change it to whatever they want, within the 12 character
limit. Add a new hv-vendor-id option to the -cpu flag to allow
for this, ex:
-cpu host,hv_time,hv-vendor-id=KeenlyKVM
Link: http://msdn.microsoft.com/library/windows/hardware/hh975392
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Message-Id: <20151016153356.28104.48612.stgit@gimli.home>
[Adjust error message to match the property name, use error_report. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In-kernel ITS emulation on ARM64 will require to supply requester IDs.
These IDs can now be retrieved from the device pointer using new
pci_requester_id() function.
This patch adds pci_dev pointer to KVM GSI routing functions and makes
callers passing it.
x86 architecture does not use requester IDs, but hw/i386/kvm/pci-assign.c
also made passing PCI device pointer instead of NULL for consistency with
the rest of the code.
Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Message-Id: <ce081423ba2394a4efc30f30708fca07656bc500.1444916432.git.p.fedin@samsung.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
For GICv3 ITS implementation we are going to use requester IDs in KVM IRQ
routing code. This patch introduces reusable convenient way to obtain this
ID from the device pointer. The new function is now used in some places,
where the same calculation was used.
MemTxAttrs.stream_id also renamed to requester_id in order to better
reflect semantics of the field.
Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <5814bcb03a297f198e796b13ed9c35059c52f89b.1444916432.git.p.fedin@samsung.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The first argument of g_free_rcu() is a pointer to a structure. But
foo_reclaim is used as a function name in the previous example along
with &foo as a pointer to the structure being reclaimed. Make the
example consistent with the previous one.
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-Id: <1444837604-13712-1-git-send-email-serge.fdrv@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
All backends now return errors through Error*, so the "Failed to
create chardev" placeholder error can only be reached if the backend
is not available (and only from the chardev-add QMP command; instead,
the -chardev command line option fails earlier).
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The backend now always returns errors via the Error* argument.
This avoids a double error message. Before:
qemu-system-x86_64: -chardev stdio,id=base: cannot use stdio with -daemonize
qemu-system-x86_64: -chardev stdio,id=base: Failed to create chardev
After:
qemu-system-x86_64: -chardev stdio,id=base: cannot use stdio with -daemonize
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Avoid undefined behaviour from shifting left into the sign bit:
hw/ide/ahci.c:551:36: runtime error: left shift of 255 by 24 places cannot be represented in type 'int'
(Unfortunately C's promotion rules mean that in the expression
"some_uint8_t_variable << 24" the LHS gets promoted to signed
int before shifting.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Block layer patches
# gpg: Signature made Fri 16 Oct 2015 14:36:50 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
* remotes/kevin/tags/for-upstream: (29 commits)
blkdebug: Don't confuse image as backing file
qcow2: Remove forward declaration of QCowAIOCB
qemu-nbd: always compile in --aio=MODE option
blockdev: always compile in -drive aio= parsing
raw-posix: warn about BDRV_O_NATIVE_AIO if libaio is unavailable
block: auto-generated node-names
util - add automated ID generation utility
blkverify: Fix BDS leak in .bdrv_open error path
block: Allow bdrv_unref_child(bs, NULL)
block: Remove bdrv_swap()
block: Add and use bdrv_replace_in_backing_chain()
blockjob: Store device name at job creation
block: Implement bdrv_append() without bdrv_swap()
block: Introduce parents list
block-backend: Add blk_set_bs()
block/io: Make bdrv_requests_pending() public
block: Split bdrv_move_feature_fields()
block: Manage backing file references in bdrv_set_backing_hd()
block: Convert bs->backing_hd to BdrvChild
block: Remove bdrv_open_image()
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
target-arm queue:
* break TBs after ISB instructions
* more support code for future implementation of EL2 and 64-bit EL3
* tell guest if KVM is enabled in SMBIOS version string
* implement OSLAR/OSLSR system registers
* provide better help text for Sharp PDA machine names
* rename imx25_pdk to imx25-pdk (since it has never been released
with the underscore-version name)
* fix MMIO writes in zynq_slcr
* implement MDCR_EL2
* virt: allow the guest to configure PCI BARs with zero PCI addresses
* fix breakpoint handling code
# gpg: Signature made Fri 16 Oct 2015 14:56:15 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
* remotes/pmaydell/tags/pull-target-arm-20151016:
target-arm: Fix CPU breakpoint handling
target-arm: Fix GDB breakpoint handling
target-arm: implement arm_debug_target_el()
hw/arm/virt: Allow zero address for PCI IO space
target-arm: Add MDCR_EL2
misc: zynq_slcr: Fix MMIO writes
arm: imx25-pdk: Fix machine name
target-arm: Provide model numbers for Sharp PDAs
target-arm: Implement AArch64 OSLAR/OSLSR_EL1 sysregs
hw/arm/virt: smbios: inform guest of kvm
target-arm: Avoid calling arm_el_is_aa64() function for unimplemented EL
target-arm: Break the TB after ISB to execute self-modified code correctly
target-arm: Add missing 'static' attribute
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
QAPI patches
# gpg: Signature made Thu 15 Oct 2015 07:40:46 BST using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
* remotes/armbru/tags/pull-qapi-2015-10-15:
qapi: Track location that created an implicit type
qapi: Create simple union type member earlier
qapi: Lazy creation of array types
qapi: Don't use info as witness of implicit object type
qapi: Drop redundant args-member-array test
qapi: Drop redundant flat-union-reverse-define test
qapi: Drop redundant returns-int test
qapi: Move empty-enum to compile-time test
qapi: Drop redundant alternate-good test
qapi: Prepare for errors during check()
qapi: Use predicate callback to determine visit filtering
qapi: Fix regression with '-netdev help'
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
migration/next for 20151015
# gpg: Signature made Thu 15 Oct 2015 07:25:27 BST using RSA key ID 5872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg: aka "Juan Quintela <quintela@trasno.org>"
* remotes/juanquintela/tags/migration/20151015:
migration: fix deadlock
migration: announce VM's new home just before VM is runnable
Migration: Generate the completed event only when we complete
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
A QEMU breakpoint match is not definitely an architectural breakpoint
match. If an exception is generated unconditionally during translation,
it is hardly possible to ignore it in the debug exception handler.
Generate a call to a helper to check CPU breakpoints and raise an
exception only if any breakpoint matches architecturally.
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
GDB breakpoints have higher priority so they have to be checked first.
Should GDB breakpoint match, just return from the debug exception
handler.
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The word "backing file" nowadays refers to the backing_hd in the
external snapshot sense (i.e. bs->backing_hd), instead of the file sense
(bs->file). Correct the comment to use the right term.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This struct doesn't exist any more since commit 3fc48d09 in August 2011,
it's about time to remove its forward declaration.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The --aio=MODE option enables Linux AIO or Windows overlapped I/O.
The #ifdef CONFIG_LINUX_AIO was a layering violation that also prevented
Windows overlapped I/O from being used.
Now that raw-posix.c prints an error when Linux AIO has not been
compiled in, we can unconditionally compile the option into qemu-nbd.
After this patch qemu-nbd --aio=native works on Windows.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
CONFIG_LINUX_AIO is an implementation detail of raw-posix.c. Don't
mention CONFIG_LINUX_AIO in blockdev.c. Let block drivers decide what
to do with BDRV_O_NATIVE_AIO. They may print an error if it is
unsupported.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
raw-posix.c silently ignores BDRV_O_NATIVE_AIO if libaio is unavailable.
It is confusing when aio=native performance is identical to aio=threads
because the binary was accidentally built without libaio.
Print a deprecation warning if -drive aio=native is used with a binary
that does not support libaio. There are probably users using aio=native
who would be inconvenienced if QEMU suddenly refused to start their
guests. In the future this will become an error.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
If a node-name is not specified, automatically generate the node-name.
Generated node-names will use the "block" sub-system identifier.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Multiple sub-systems in QEMU may find it useful to generate IDs
for objects that a user may reference via QMP or HMP. This patch
presents a standardized way to do it, so that automatic ID generation
follows the same rules.
This patch enforces the following rules when generating an ID:
1.) Guarantee no collisions with a user-specified ID
2.) Identify the sub-system the ID belongs to
3.) Guarantee of uniqueness
4.) Spoiling predictability, to avoid creating an assumption
of object ordering and parsing (i.e., we don't want users to think
they can guess the next ID based on prior behavior).
The scheme for this is as follows (no spaces):
# subsys D RR
Reserved char --| | | |
Subsystem String ----| | |
Unique number (64-bit) --| |
Two-digit random number ---|
For example, a generated node-name for the block sub-system may look
like this:
#block076
The caller of id_generate() is responsible for freeing the generated
node name string with g_free().
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
bdrv_unref() can be called with a NULL argument and doesn't do anything
then. Make bdrv_unref_child() consistent with it.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
bdrv_swap() is unused now. Remove it and all functions that have
no other users than bdrv_swap(). In particular, this removes the
.bdrv_rebind callbacks from block drivers.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This cleans up the mess we left behind in the mirror code after the
previous patch. Instead of using bdrv_swap(), just change pointers.
The interface change of the mirror job that callers must consider is
that after job completion, their local BDS pointers still point to the
same node now. qemu-img must change its code accordingly (which makes it
easier to understand); the other callers stays unchanged because after
completion they don't do anything with the BDS, but just with the job,
and the job is still owned by the source BDS.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Some block jobs change the block device graph on completion. This means
that the device that owns the job and originally was addressed with its
device name may no longer be what the corresponding BlockBackend points
to.
Previously, the effects of bdrv_swap() ensured that the job was (at
least partially) transferred to the target image. Events that contain
the device name could still use bdrv_get_device_name(job->bs) and get
the same result.
After removing bdrv_swap(), this won't work any more. Instead, save the
device name at job creation and use that copy for QMP events and
anything else identifying the job.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Remember all parent nodes and just change the pointers there instead of
swapping the contents of the BlockDriverState.
Handling of snapshot=on must be moved further down in bdrv_open()
because *pbs (which is the bs pointer in the BlockBackend) must already
be set before bdrv_append() is called. Otherwise bdrv_append() changes
the BB's pointer to the temporary snapshot, but bdrv_open() overwrites
it with the read-only original image.
We also need to be careful to update callers as the interface changes
(becomes less insane): Previously, the meaning of the two parameters was
inverted when bdrv_append() returns. Now any BDS pointers keep pointing
to the same node.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
After bdrv_swap(), some fields must be moved back to their original BDS
to compensate for the effects that a swap of the contents of the objects
has while keeping the old addresses. Other fields must be moved back
because they should logically be moved and must stay on top
When replacing bdrv_swap() with operations changing the pointers in the
parents, we only need the latter and must avoid swapping the former.
Split the function accordingly.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This simplifies the code somewhat, especially when dropping whole
backing file subchains.
The exception is the mirroring code that does adventurous things with
bdrv_swap() and in order to keep it working, I had to duplicate most of
bdrv_set_backing_hd() locally. We'll get rid again of this ugliness
shortly.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This is the final step in converting all of the BlockDriverState
pointers that block drivers use to BdrvChild.
After this patch, bs->children contains the full list of child nodes
that are referenced by a given BDS, and these children are only
referenced through BdrvChild, so that updating the pointer in there is
enough for changing edges in the graph.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This patch removes the temporary duplication between bs->file and
bs->file_child by converting everything to BdrvChild.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Store the BdrvChild for bs->file. At this point, bs->file_child->bs just
duplicates the bs->file pointer. Later, it will completely replace it.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
In commit fe646693ac, the option
printout format changed.
This updates the VMDK test 059.out to the correct output.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Although the canonical source of reference for QMP commands is
qapi-schema.json, for consistency's sake, update qmp-commands.hx to
state the list of supported transactionable operations, namely:
drive-backup
blockdev-backup
blockdev-snapshot-internal-sync
abort
block-dirty-bitmap-add
block-dirty-bitmap-clear
Also update the possible values for the "type" action array.
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
If a snapshot is performed on a device that has I/O limits they should
be moved to the target image (the new active layer).
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Commit 934659c460 disabled the supression of segmentation faults in
bash tests. The new output of test 061, however, assumes that a core
dump will be produced if a program aborts. This is not necessarily the
case because core dumps can be disabled using ulimit.
Since we cannot guarantee that abort() will produce a core dump, we
should use SIGKILL instead (that does not produce any) and update the
test output accordingly.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Implement debug exception routing according to ARM ARM D2.3.1 Pseudocode
description of routing debug exceptions.
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The /4 for offset calculation in MMIO writes was happening twice giving
wrong write offsets. Fix.
While touching the code, change the if-else to be a short returning if
and convert the debug message to a GUEST_ERROR, which is more accurate
for this condition.
Cc: qemu-stable@nongnu.org
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* For Collie, Akita, Spitz, Borzoi, Terrier and Tosa PDAs, provide
model numbers and manufacturer (Sharp) information.
Signed-off-by: Ryo ONODERA <ryo_on@yk.rim.or.jp>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Added oslar_write function to OSLAR_EL1 sysreg, using a status variable
in ARMCPUState.cp15 struct (oslsr_el1). This variable is also linked
to the newly added read-only OSLSR_EL1 register.
Linux reads from this register during its suspend/resume procedure.
Signed-off-by: Davorin Mista <davorin.mista@aggios.com>
[PMM: folded a long line and tweaked a comment]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
ARM/AArch64 KVM guests don't have any way to identify
themselves as KVM guests (x86 guests use a CPUID leaf). Now, we
could discuss all sorts of reasons why guests shouldn't need to
know that, but then there's always some case where it'd be
nice... Anyway, now that we have SMBIOS tables in ARM guests,
it's easy for the guest to know that it's a QEMU instance. This
patch takes that one step further, also identifying KVM, when
appropriate. Again, we could debate why generally nothing
should care whether it's of type QEMU or QEMU/KVM, but again,
sometimes it's nice to know...
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Wei Huang <wei@redhat.com>
Message-id: 1443017892-15567-1-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
It is incorrect to call arm_el_is_aa64() function for unimplemented EL.
This patch fixes several attempts to do so.
Signed-off-by: Sergey Sorokin <afarallax@yandex.ru>
[PMM: Reworked several of the comments to be more verbose.]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
If any store instruction writes the code inside the same TB
after this store insn, the execution of the TB must be stopped
to execute new code correctly.
As described in ARMv8 manual D3.4.6 self-modifying code must do an
IC invalidation to be valid, and an ISB after it. So it's enough to end
the TB after ISB instruction on the code translation.
Also this TB break is necessary to take any pending interrupts immediately
after an ISB (as required by ARMv8 ARM D1.14.4).
Signed-off-by: Sergey Sorokin <afarallax@yandex.ru>
[PMM: tweaked commit message and comments slightly]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Eliminate this warning associated with the addRemovableDevicesMenuItems()
function:
ui/cocoa.m:1344:13: warning: function declaration isn't a prototype
[-Wstrict-prototypes]
static void addRemovableDevicesMenuItems()
^
ui/cocoa.m: In function 'addRemovableDevicesMenuItems':
ui/cocoa.m:1344:13: warning: old-style function definition [-Wold-style-definition]
Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
Message-id: 7B365FC2-072B-4E8D-A1D9-922C2D691A83@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
A future patch will move some error checking from the parser
to the various QAPISchema*.check() methods, which run only
after parsing completes. It will thus be possible to create
a python instance representing an implicit QAPI type that
parses fine but will fail validation during check(). Since
all errors have to have an associated 'info' location, we
need a location to be associated with those implicit types.
The intuitive info to use is the location of the enclosing
entity that caused the creation of the implicit type.
Note that we do not anticipate builtin types being used in
an error message (as they are not part of the user's QAPI
input, the user can't cause a semantic error in their
behavior), so we exempt those types from requiring info, by
setting a flag to track the completion of _def_predefineds(),
and tracking that flag in _def_entity().
No change to the generated code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1444710158-8723-13-git-send-email-eblake@redhat.com>
[Missing QAPISchemaArrayType.is_implicit() supplied]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
For simple unions, we were creating the implicit 'type' tag
member during the QAPISchemaObjectTypeVariants constructor.
This is different from every other implicit QAPISchemaEntity
object, which get created by QAPISchema methods. Hoist the
creation to the caller (renaming _make_tag_enum() to
_make_implicit_tag()), and pass the entity rather than the
string name, so that we have the nice property that no
entities are created as a side effect within a different
entity. A later patch will then have an easier time of
associating location info with each entity creation.
No change to generated code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1444710158-8723-10-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Commit ac88219a had several TODO markers about whether we needed
to automatically create the corresponding array type alongside
any other type. It turns out that most of the time, we don't!
There are a few exceptions: 1) We have a few situations where we
use an array type in internal code but do not expose that type
through QMP; fix it by declaring a dummy type that forces the
generator to see that we want to use the array type.
2) The builtin arrays (such as intList for QAPI ['int']) must
always be generated, because of the way our QAPI_TYPES_BUILTIN
compile guard works: we have situations (at the very least
tests/test-qmp-output-visitor.c) that include both top-level
"qapi-types.h" (via "error.h") and a secondary
"test-qapi-types.h". If we were to only emit the builtin types
when used locally, then the first .h file would not include all
types, but the second .h does not declare anything at all because
the first .h set QAPI_TYPES_BUILTIN, and we would end up with
compilation error due to things like unknown type 'int8List'.
Actually, we may need to revisit how we do type guards, and
change from a single QAPI_TYPES_BUILTIN over to a different
usage pattern that does one #ifdef per qapi type - right now,
the only types that are declared multiple times between two qapi
.json files for inclusion by a single .c file happen to be the
builtin arrays. But now that we have QAPI 'include' statements,
it is logical to assume that we will soon reach a point where
we want to reuse non-builtin types (yes, I'm thinking about what
it will take to add introspection to QGA, where we will want to
reuse the SchemaInfo type and friends). One #ifdef per type
will help ensure that generating the same qapi type into more
than one qapi-types.h won't cause collisions when both are
included in the same .c file; but we also have to solve how to
avoid creating duplicate qapi-types.c entry points. So that
is a problem left for another day.
Generated code for qapi-types and qapi-visit is drastically
reduced; less than a third of the arrays that were blindly
created were actually needed (a quick grep shows we dropped
from 219 to 69 *List types), and the .o files lost more than
30% of their bulk. [For best results, diff the generated
files with 'git diff --patience --no-index pre post'.]
Interestingly, the introspection output is unchanged - this is
because we already cull all types that are not indirectly
reachable from a command or event, so introspection was already
using only a subset of array types. The subset of types
introspected is now a much larger percentage of the overall set
of array types emitted in qapi-types.h (since the larger set
shrunk), but still not 100% (evidence that the array types
emitted for our new Dummy structs, and the new struct itself,
don't affect QMP).
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1444710158-8723-9-git-send-email-eblake@redhat.com>
[Moved array info tracking to a later patch]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
A future patch will enable error reporting from the various
QAPISchema*.check() methods. But to report an error related
to an implicit type, we'll need to associate a location with
the type (the same location as the top-level entity that is
causing the creation of the implicit type), and once we do
that, keying off of whether foo.info exists is no longer a
viable way to determine if foo is an implicit type.
Instead, add an is_implicit() method to QAPISchemaEntity, and use it.
It can be overridden later for ObjectType and EnumType, when implicit
instances of those classes gain info.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1444710158-8723-8-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
qapi-schema-test already ensures that we can correctly compile
an array of enums (__org.qemu_x-command), an array of builtins
(UserDefNativeListUnion), and an array of structs (again
__org.qemu_x-command). That means args-member-array is not
adding any additional parse-only test coverage, so drop it.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1444760807-11307-1-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
As of commit 8c3f8e77, we test compilation of forward references
for a struct base type (UserDefOne), flat union base type
(UserDefUnionBase), and flat union branch type
(UserDefFlatUnion2). The only remaining forward reference being
tested for parsing in flat-union-reverse-define was a forward
enum declaration. Once we make sure that always compiles,
the smaller parse-only test is redundant and can be deleted.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1444710158-8723-7-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
qapi-schema-test was already testing that we could have a
command returning int, but burned a command name in the whitelist.
Merge the redundant positive test returns-int, and pick a name
that reduces the whitelist size.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1444710158-8723-6-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The alternate-good.json test was already covered by
qapi-schema-test.json. As future commits will be tweaking
how alternates are laid out, removing the duplicate test now
reduces churn.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1444710158-8723-4-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The next few patches will start migrating error checking from
ad hoc parse methods into the QAPISchema*.check() methods. But
for an error message to display, we first have to fix the
overall 'try' to catch those errors. We also want to enable a
few more assertions, such as making sure every attempt to
raise a semantic error is passed a valid location info, or that
various preconditions hold.
The general approach for moving error checking will then be to
relax an assertion into an if that raises an exception if the
condition does not hold, and removing the counterpart ad hoc
check done during the parse phase.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1444710158-8723-3-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Previously, qapi-types and qapi-visit filtered out implicit
objects during visit_object_type() by using 'info' (works since
implicit objects do not [yet] have associated info); meanwhile
qapi-introspect filtered out all schema types on the first pass
by returning a python type from visit_begin(), which was then
used at a distance in QAPISchema.visit() to do the filtering.
Rather than keeping these ad hoc approaches, add a new visitor
callback visit_needed() which returns False to skip a given
entity, and which defaults to True unless overridden. Use the
new mechanism to simplify all three filtering visitors.
No change to the generated code.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1444710158-8723-2-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Release qemu global mutex before call synchronize_rcu().
synchronize_rcu() waiting for all readers to finish their critical
sections. There is at least one critical section in which we try
to get QGM (critical section is in address_space_rw() and
prepare_mmio_access() is trying to aquire QGM).
Both functions (migration_end() and migration_bitmap_extend())
are called from main thread which is holding QGM.
Thus there is a race condition that ends up with deadlock:
main thread working thread
Lock QGA |
| Call KVM_EXIT_IO handler
| |
| Open rcu reader's critical section
Migration cleanup bh |
| |
synchronize_rcu() is |
waiting for readers |
| prepare_mmio_access() is waiting for QGM
\ /
deadlock
The patch changes bitmap freeing from direct g_free after synchronize_rcu
to free inside call_rcu.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reported-by: Igor Redko <redkoi@virtuozzo.com>
Tested-by: Igor Redko <redkoi@virtuozzo.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
CC: Anna Melekhova <annam@virtuozzo.com>
CC: Juan Quintela <quintela@redhat.com>
CC: Amit Shah <amit.shah@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Wen Congyang <wency@cn.fujitsu.com>
We were announcing the dest host's IP as our new IP a bit too soon -- if
there were errors detected after this announcement was done, the
migration is failed and the VM could continue running on the src host --
causing problems later.
Move around the qemu_announce_self() call so it's done just before the
VM is runnable.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Having creation as a member of the CharDriver struct removes the need
to export functions for qemu-char.c's usage. After the conversion,
chardev backends implemented outside qemu-char.c will not need a stub
creation function anymore.
Ultimately all drivers will be converted. For now, support the case
where cd->create == NULL.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Move the #ifdef up into qmp_chardev_add, and avoid duplicating
the code that reports unavailable backends. Split HAVE_CHARDEV_TTY
into HAVE_CHARDEV_SERIAL and HAVE_CHARDEV_PTY.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Eliminate this warning associated with the setting of the normalWindow's title:
ui/cocoa.m: In function '-[QemuCocoaAppController init]':
ui/cocoa.m:888:9: warning: format not a string literal and no format arguments
[-Wformat-security]
[normalWindow setTitle:[NSString stringWithFormat:@"QEMU"]];
Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
Message-id: 57057D6E-C108-4AE1-8370-E7E6855B2F2C@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The README file is usually the first thing consulted when a user
or developer obtains a copy of the QEMU source. The current QEMU
README is lacking immediately useful information and so not very
friendly for first time encounters. It either redirects users to
qemu-doc.html (which does not exist until they've actually
compiled QEMU), or the website (which assumes the user has
convenient internet access at time of reading).
This fills out the README file as simple quick-start guide on
the topics of building source, submitting patches, licensing
and how to contact the QEMU community. It does not intend to be
comprehensive, instead referring people to an appropriate web
page to obtain more detailed information. The intent is to give
users quick guidance to get them going in the right direction.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1444671679-17674-1-git-send-email-berrange@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
QAPI patches
# gpg: Signature made Mon 12 Oct 2015 18:56:35 BST using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
* remotes/armbru/tags/pull-qapi-2015-10-12:
qapi: Simplify gen_visit_fields() error handling
qapi: Share gen_visit_fields()
qapi: Share gen_err_check()
qapi: Consistent generated code: minimize push_indent() usage
qapi: Consistent generated code: prefer common indentation
qapi: Consistent generated code: prefer common labels
qapi: Consistent generated code: prefer visitor 'v'
qapi: Consistent generated code: prefer error 'err'
qapi: Reuse code for flat union base validation
qapi: Test use of 'number' within alternates
qapi: Add tests for empty unions
qapi: Avoid assertion failure on union 'type' collision
qapi: Test for various name collisions
qapi: Clean up qapi.py per pep8
qapi: Invoke exception superclass initializer
qapi: Improve 'include' error message
qapi: Sort qapi-schema tests
MAINTAINERS: Specify QAPI include and test files
MAINTAINERS: Specify QObject include and test files
docs: Move files from docs/qmp/ to docs/
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Since we have consolidated all generated code to use 'err' as
the name of the local variable for error detection, we can
simplify the decision on whether to skip error detection (useful
for deallocation paths) to be a boolean.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-18-git-send-email-eblake@redhat.com>
[Change to gen_visit_fields() simplified]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Consolidate the code between visit, command marshalling, and
event generation that iterates over the members of a struct.
It reduces code duplication in the generator, so that a future
patch can reduce the size of generated code while touching only
one instead of three locations.
There are no changes to the generated marshal code.
The visitor code becomes slightly more verbose, but remains
semantically equivalent, and is actually easier to read as
it follows a more common idiom:
| visit_optional(v, &(*obj)->has_device, "device", &err);
|- if (!err && (*obj)->has_device) {
|- visit_type_str(v, &(*obj)->device, "device", &err);
|- }
| if (err) {
| goto out;
| }
|+ if ((*obj)->has_device) {
|+ visit_type_str(v, &(*obj)->device, "device", &err);
|+ if (err) {
|+ goto out;
|+ }
|+ }
The event code becomes slightly more verbose, but this is
arguably a bug fix: although the visitors are not well
documented, use of an optional member should not be attempted
unless guarded by a prior call to visit_optional(). Works only
because the output qmp visitor has a no-op visit_optional():
|+ visit_optional(v, &has_offset, "offset", &err);
|+ if (err) {
|+ goto out;
|+ }
| if (has_offset) {
| visit_type_int(v, &offset, "offset", &err);
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-17-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
qapi-commands has a nice helper gen_err_check(), but did not
use it everywhere. In fact, using it in more places makes it
easier to reduce the lines of code used for generating error
checks. This in turn will make it easier for later patches
to consolidate another common pattern among the generators.
The generated code has fewer blank lines in qapi-event.c functions,
but has no semantic difference.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-16-git-send-email-eblake@redhat.com>
[Drop another blank line for symmetry]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
We had some pointless differences in the generated code for visit,
command marshalling, and events; unifying them makes it easier for
future patches to consolidate to common helper functions.
This is one patch of a series to clean up these differences.
This patch reduces the number of push_indent()/pop_indent() pairs
so that generated code is typically already at its natural output
indentation in the python files. It is easier to reason about
generated code if the reader does not have to track how much
spacing will be inserted alongside the code, and moreso when all
of the generators use the same patterns (qapi-type and qapi-event
were already using in-place indentation).
Arguably, the resulting python may be a bit harder to read with C
code at the same indentation as python; on the other hand, not
having to think about push_indent() is a win, and most decent
editors provide syntax highlighting that makes it easier to
visually distinguish python code from string literals that will
become C code.
There is no change to the generated output.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-15-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
We had some pointless differences in the generated code for visit,
command marshalling, and events; unifying them makes it easier for
future patches to consolidate to common helper functions.
This is one patch of a series to clean up these differences.
This patch adjusts gen_visit_union() to use the same indentation
as other functions, namely, by jumping early to the error label
if the object was not set rather than placing the rest of the
body inside an if for when it is set.
No change in semantics to the generated code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-14-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
We had some pointless differences in the generated code for visit,
command marshalling, and events; unifying them makes it easier for
future patches to consolidate to common helper functions.
This is one patch of a series to clean up these differences.
This patch names the goto labels 'out' (not 'clean') and 'out_obj'
(not 'out_end'). Additionally, the generator was inconsistent on
whether labels had a leading space [our HACKING is silent; while
emacs 'gnu' style adds the space to avoid littering column 1].
For minimal churn, prefer no leading space; this also matches
the style that is more prevalent in current qemu.git.
No change in semantics to the generated code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-13-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
We had some pointless differences in the generated code for visit,
command marshalling, and events; unifying them makes it easier for
future patches to consolidate to common helper functions.
This is one patch of a series to clean up these differences.
This patch names the local visitor variable 'v' rather than 'm'.
Related objects, such as 'QapiDeallocVisitor', are also named by
their initials instead of an unrelated leading m.
No change in semantics to the generated code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-12-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
We had some pointless differences in the generated code for visit,
command marshalling, and events; unifying them makes it easier for
future patches to consolidate to common helper functions.
This is one patch of a series to clean up these differences.
This patch consistently names the local error variable 'err' rather
than 'local_err'.
No change in semantics to the generated code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-11-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Rather than open-code the check for a valid base type, we
should reuse the common functionality. This allows for
consistent error messages, and also makes it easier for a
later patch to turn on support for inline anonymous base
structures.
Test flat-union-inline is updated to test only one feature
(anonymous branch dictionaries), which can be implemented
independently (test flat-union-bad-base already covers the
idea of an anonymous base dictionary).
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-10-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Add some testsuite exposure for use of a 'number' as part of
an alternate. The current state of the tree has a few bugs
exposed by this: our input parser depends on the ordering of
how the qapi schema declared the alternate, and the parser
does not accept integers for a 'number' in an alternate even
though it does for numbers outside of an alternate.
Mixing 'int' and 'number' in the same alternate is unusual,
since both are supplied by json-numbers, but there does not
seem to be a technical reason to forbid it given that our
json lexer distinguishes between json-numbers that can be
represented as an int vs. those that cannot.
Improve the existing test_visitor_in_alternate() to match the
style of the new test_visitor_in_alternate_number(), and to
ensure full coverage of all possible qtype parsing.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-9-git-send-email-eblake@redhat.com>
[Eric's follow-up fixes squashed in]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The documentation claims that alternates are useful for
allowing two or more types, although nothing enforces this.
Meanwhile, it is silent on whether empty unions are allowed.
In practice, the generated code will compile, in part because
we have a 'void *data' branch; but attempting to visit such a
type will cause an abort(). While there's no technical reason
that a degenerate union could not be made to work, it's harder
to justify the time spent in chasing known (the current
abort() during visit) and unknown corner cases, than it would
be to just outlaw them. A future patch will probably take the
approach of forbidding them; in the meantime, we can at least
add testsuite coverage to make it obvious where things stand.
In addition to adding tests to expose the problems, we also
need to adjust existing tests that are meant to test something
else, but which could fail for the wrong reason if we reject
degenerate alternates/unions.
Note that empty structs are explicitly supported (for example,
right now they are the only way to specify that one branch of a
flat union adds no additional members), and empty enums are
covered by the testsuite as working (even if they do not seem
to have much use).
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-8-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The previous commit added two tests that triggered an assertion
failure. It's fairly straightforward to avoid the failure by
just outright forbidding the collision between a union's tag
values and its discriminator name (including the implicit name
'kind' supplied for simple unions [*]). Ultimately, we'd like
to move the collision detection into QAPISchema*.check(), but
for now it is easier just to enhance the existing checks.
[*] Of course, down the road, we have plans to rename the simple
union tag name to 'type' to match the QMP wire name, but the
idea of the collision will still be present even then.
Technically, we could avoid the collision by naming the C union
members representing each enum value as '_case_value' rather
than 'value'; but until we have an actual qapi client (and not
just our testsuite) that has a legitimate reason to match a
case label to the name of a QMP key and needs the name munging
to satisfy the compiler, it's easier to just reject the qapi
as invalid.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-7-git-send-email-eblake@redhat.com>
[Polished a few comments]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Expose some weaknesses in the generator: we don't always forbid
the generation of structs that contain multiple members that map
to the same C or QMP name. This has already been marked FIXME in
qapi.py in commit d90675f, but having more tests will make sure
future patches produce desired behavior; and updating existing
patches to better document things doesn't hurt, either. Some of
these collisions are already caught in the old-style parser
checks, but ultimately we want all collisions to be caught in the
new-style QAPISchema*.check() methods.
This patch focuses on C struct members, and does not consider
collisions between commands and events (affecting C function
names), or even collisions between generated C type names with
user type names (for things like automatic FOOList struct
representing array types or FOOKind for an implicit enum).
There are two types of struct collisions we want to catch:
1) Collision between two keys in a JSON object. qapi.py prevents
that within a single struct (see test duplicate-key), but it is
possible to have collisions between a type's members and its
base type's members (existing tests struct-base-clash,
struct-base-clash-deep), and its flat union variant members
(renamed test flat-union-clash-member).
2) Collision between two members of the C struct that is generated
for a given QAPI type:
a) Multiple QAPI names map to the same C name (new test
args-name-clash)
b) A QAPI name maps to a C name that is used for another purpose
(new tests flat-union-clash-branch, struct-base-clash-base,
union-clash-data). We already fixed some such cases in commit
0f61af3e and 1e6c1616, but more remain.
c) Two C names generated for other purposes clash
(updated test alternate-clash, new test union-clash-branches,
union-clash-type, flat-union-clash-type)
Ultimately, if we need to have a flat union where a tag value
clashes with a base member name, we could change the generator to
name the union (using 'foo.u.value' rather than 'foo.value') or
otherwise munge the C name corresponding to tag values. But
unless such a need arises, it will probably be easier to just
forbid these collisions.
Some of these negative tests will be deleted later, and positive
tests added to qapi-schema-test.json in their place, when the
generator code is reworked to avoid particular code generation
collisions in class 2).
[Note that viewing this patch with git rename detection enabled
may see some confusion due to renaming some tests while adding
others, but where the content is similar enough that git picks
the wrong pre- and post-patch files to associate]
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-6-git-send-email-eblake@redhat.com>
[Improve commit message and comments a bit, drop an unrelated test]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Use of '"...%s" % include' to print non-strings can lead to
ugly messages, such as this (if the .json change is applied
without the qapi.py change):
Expected a file name (string), got: OrderedDict()
Better is to just omit the actual non-string value in the
message.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-3-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Recent changes to qapi have provided quite a bit of churn in
the makefile, because we are inconsistent on what order test
names appear in, and on whether to re-wrap the list of tests or
just add arbitrary line lengths. Writing the list in a sorted
fashion, one test per line, will make future patches easier
to see what tests are being added or removed by a patch.
Although it is tempting to use $(wildcard qapi-schema/*.json)
for a more compact listing, such an approach would risk picking
up leftover garbage .json files in the directory; so keeping
the list explicit is safer for ensuring reproducible tarballs
and test results.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-2-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Giving QMP its own subdirectory in docs/ is hardly worthwhile when we
have just four files, and one of them isn't even in the subdirectory.
Move the files from docs/qmp/ to docs/, renaming docs/qmp/README to
docs/qmp-intro.
Update MAINTAINERS. The new pattern also captures the fourth file
docs/writing-qmp-commands.txt.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1443111117-29831-2-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
The QemuOpts-based code treats "option not set" and "option set
to false" the same way for the ipv4 and ipv6 options, because it
is meant to handle only the ",ipv4" and ",ipv6" substrings in
hand-crafted option parsers.
When converting InetSocketAddress to QemuOpts, however, it is
necessary to handle all three cases (not set, set to true, set
to false). Currently we are not handling all cases correctly.
The rules are:
* if none or both options are absent, leave things as is
* if the single present option is Y, the other should be N.
This can be implemented by leaving things as is, or by setting
the other option to N as done in this patch.
* if the single present option is N, the other should be Y.
This is handled by the "else if" branch of this patch.
This ensures that the ipv4 option has an effect on Windows,
where creating the socket with PF_UNSPEC makes an ipv6
socket. With this patch, ",ipv4" will result in a PF_INET
socket instead.
Reported-by: Sair, Umair <Umair_Sair@mentor.com>
Tested-by: Sair, Umair <Umair_Sair@mentor.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
checkpatch currently loops on fpu/softfloat.c
Turns out this is fixed in the Linux version of checkpatch.
So this is a port of Andy Whitcrofts fix from Linux,
Original commit was commit 89a883530fe7 ("checkpatch: ## is not a
valid modifier")
As suggested by Peter Maydell for the QEMU version we drop the last "|"
as there seems to be no need for that. (FWIW, the kernel discusion about
that dried out:
http://www.spinics.net/lists/kernel/msg1944421.html
)
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <1444291524-66569-1-git-send-email-borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
As the comment in kvm_set_phys_mem() says, KVM works in page size chunks.
However it uses hardcoded TARGET_PAGE_SIZE which is 4K on most platforms
while actual host may use different page size, for example, PPC64 hosts
use 64K system pages.
This replaces static TARGET_PAGE_SIZE with run-time calculated
qemu_real_host_page_size.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <1444102257-17405-1-git-send-email-aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The header is included from basically everywhere, thanks to cpu.h.
It should be moved to the (TCG only) files that actually need it.
As a start, remove non-TCG stuff.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The style here seems to be split according to the maintainer, but
traditionally open braces were placed on typedef lines.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Gather up all the fields currently in CPUState which deal with the CPU's
AddressSpace into a separate CPUAddressSpace struct. This paves the way
for allowing the CPU to know about more than one AddressSpace.
The rearrangement also allows us to make the MemoryListener a directly
embedded object in the CPUAddressSpace (it could not be embedded in
CPUState because 'struct MemoryListener' isn't defined for the user-only
builds). This allows us to resolve the FIXME in tcg_commit() by going
directly from the MemoryListener to the CPUAddressSpace.
This patch extracts the actual update of the cached dispatch pointer
from cpu_reload_memory_map() (which is renamed accordingly to
cpu_reloading_memory_map() as it is only responsible for breaking
cpu-exec.c's RCU critical section now). This lets us keep the definition
of the CPUAddressSpace struct private to exec.c.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1443709790-25180-4-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The reason for cpu_reload_memory_map()'s RCU operations is not
so much because the guest could make the critical section very
long, but that it could have a critical section within which
it made an arbitrary number of changes to the memory map and
thus accumulate an unbounded amount of memory data structures
awaiting reclamation. Clarify the comment to make this clearer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1443709790-25180-3-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently we call cpu_reload_memory_map() from cpu_exec_init(),
but this is not necessary:
* KVM doesn't use the data structures maintained by
cpu_reload_memory_map() (the TLB and cpu->memory_dispatch)
* for TCG, we will call this function via tcg_commit() either
as soon as tcg_cpu_address_space_init() registers the listener,
or when the first MemoryRegion is added to the AddressSpace
if the AS is empty when we register the listener
The unnecessary call is awkward for adding support for multiple
address spaces per CPU, so drop it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Message-Id: <1443709790-25180-2-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There are two bugs here. First, the 16-bit id loses the high 8 bits
when shifted left by 24. Second, the address must be combined with
an "or" or we just get zero.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Simplify memory allocation by sticking with a single API. GSlice
is not that fast anyway (tcmalloc/jemalloc are better).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Simplify memory allocation by sticking with a single API. GSlice
is not that fast anyway (tcmalloc/jemalloc are better).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Pull request
v2:
* Fix virtio 16lx -> HWADDR_PRIx format specifier [Peter]
# gpg: Signature made Mon 12 Oct 2015 11:19:06 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/block-pull-request:
sdhci.c: Limit the maximum block size
block: switch from g_slice allocator to malloc
virtio dataplane: adapt dataplane for virtio Version 1
virtio-blk: use blk_io_plug/unplug for Linux AIO batching
sdhci: Pass drive parameter to sdhci-pci via qdev property
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Mon 12 Oct 2015 08:56:47 BST using RSA key ID 398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211
* remotes/jasowang/tags/net-pull-request:
tests: add test cases for netfilter object
netfilter: add a netbuffer filter
net/queue: export qemu_net_queue_append_iov
netfilter: print filter info associate with the netdev
netfilter: add an API to pass the packet to next filter
net/queue: introduce NetQueueDeliverFunc
net: merge qemu_deliver_packet and qemu_deliver_packet_iov
netfilter: hook packets before net queue send
init/cleanup of netfilter object
vl.c: init delayed object after net_init_clients
vmxnet3: Add support for VMXNET3_CMD_GET_ADAPTIVE_RING_INFO command
e1000: use alias for default model
vmxnet3: Support reading IMR registers on bar0
net/vmxnet3: Refine l2 header validation
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Simplify memory allocation by sticking with a single API. GSlice
is not that fast anyway (tcmalloc/jemalloc are better).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Fix device introspection regressions
# gpg: Signature made Fri 09 Oct 2015 14:43:41 BST using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
* remotes/armbru/tags/pull-monitor-2015-10-09:
Revert "qdev: Use qdev_get_device_class() for -device <type>,help"
qdev: Protect device-list-properties against broken devices
qmp: Fix device-list-properties not to crash for abstract device
device-introspect-test: New, covering device introspection
libqtest: New hmp() & friends
libqtest: Clean up unused QTestState member sigact_old
tests: Fix how qom-test is run
macio: move DBDMA_init from instance_init to realize
hw: do not pass NULL to memory_region_init from instance_init
memory: allow destroying a non-empty MemoryRegion
virtio-input: Fix device introspection on non-Linux hosts
update-linux-headers: Rename SW_MAX to SW_MAX_
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The raw-posix block driver implements Linux AIO batching so multiple
requests can be submitted with a single io_submit(2) system call.
Batching is currently only used by virtio-scsi and
virtio-blk-data-plane.
Enable batching for regular virtio-blk so the number of io_submit(2)
system calls is reduced for workloads with queue depth > 1.
In 4KB random read performance tests with queue depth 32, the CPU
utilization on the host is reduced by 9.4%. The fio job is as follows:
[global]
bs=4k
ioengine=libaio
iodepth=32
direct=1
sync=0
time_based=1
runtime=30
clocksource=gettimeofday
ramp_time=5
[job1]
rw=randread
filename=/dev/vdb
size=4096M
write_bw_log=fio
write_iops_log=fio
write_lat_log=fio
log_avg_msec=1000
This benchmark was run on an raw image on LVM. The disk was an SSD
drive and -drive cache=none,aio=native was used.
Tested-by: Pradeep Surisetty <psuriset@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Commit 19109131 disabled the sdhci-pci support because it used
drive_get_next(). This patch reenables sdhci-pci and changes it to
pass the drive via a qdev property - for example:
-device sdhci-pci,drive=drive0 -drive id=drive0,if=sd,file=myimage
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Using qtest qmp interface to implement following cases:
1) add/remove netfilter
2) add a netfilter then delete the netdev
3) add/remove more than one netfilters
4) add more than one netfilters and then delete the netdev
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This filter is to buffer/release packets. Can be used when using
MicroCheckpointing or other Remus like VM FT solutions.
You can also use it to crudely simulate network delay. Doesn't
actually delay individual packets, but batches them together, which is
a delay of sorts.
Usage:
-netdev tap,id=bn0
-object filter-buffer,id=f0,netdev=bn0,queue=rx,interval=1000
NOTE:
Interval is in microseconds, it can't be omitted currently, and can't be 0.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
When execute "info network", print filter info also.
add a info_str member to NetFilterState, store specific filters
info.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
net/queue.c has logic to send/queue/flush packets but a
qemu_deliver_packet_iov() call is hardcoded. Abstract this
func so that we can use our own deliver function in netfilter.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
qemu_deliver_packet_iov already have the compat delivery, we
can drop qemu_deliver_packet.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Add a netfilter object based on QOM.
A netfilter is attached to a netdev, captures all network packets
that pass through the netdev. When we delete the netdev, we also
delete the netfilter object attached to it, because if the netdev is
removed, the filter which attached to it is useless.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Init delayed object after net_init_clients, because netfilters need
to be initialized after net clients initialized.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Some drivers (e.g. vmware-tools) issue the VMXNET3_CMD_GET_ADAPTIVE_RING_INFO
command.
Currently, due to lack of support, a bogus value (-1) is returned.
Support this command, returning the "adaptive-ring disabled" flag.
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@ravellosystems.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Instead of duplicating the "e1000-82540em" device model as "e1000",
make the latter an alias for the former.
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Validation of l2 header length assumed minimal packet size as
eth_header + 2 * vlan_header regardless of the actual protocol.
This caused crash for valid non-IP packets shorter than 22 bytes, as
'tx_pkt->packet_type' hasn't been assigned for such packets, and
'vmxnet3_on_tx_done_update_stats()' expects it to be properly set.
Refine header length validation in 'vmxnet_tx_pkt_parse_headers'.
Check its return value during packet processing flow.
As a side effect, in case IPv4 and IPv6 header validation failure,
corrupt packets will be dropped.
Signed-off-by: Dana Rubin <dana.rubin@ravellosystems.com>
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@ravellosystems.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This reverts commit 31bed5509d.
The reverted commit changed qdev_device_help() to reject abstract
devices and devices that have cannot_instantiate_with_device_add_yet
set, to fix crash bugs like -device x86_64-cpu,help.
Rejecting abstract devices makes sense: they're purely internal, and
the implementation of the help feature can't cope with them.
Rejecting non-pluggable devices makes less sense: even though you
can't use them with -device, the help may still be useful elsewhere,
for instance with -global. This is a regression: -device FOO,help
used to help even for FOO that aren't pluggable.
The previous two commits fixed the crash bug at a lower layer, so
reverting this one is now safe. Fixes the -device FOO,help
regression, except for the broken devices marked
cannot_even_create_with_object_new_yet. For those, the error message
is improved.
Example of a device where the regression is fixed:
$ qemu-system-x86_64 -device PIIX4_PM,help
PIIX4_PM.command_serr_enable=bool (on/off)
PIIX4_PM.multifunction=bool (on/off)
PIIX4_PM.rombar=uint32
PIIX4_PM.romfile=str
PIIX4_PM.addr=int32 (Slot and optional function number, example: 06.0 or 06)
PIIX4_PM.memory-hotplug-support=bool
PIIX4_PM.acpi-pci-hotplug-with-bridge-support=bool
PIIX4_PM.s4_val=uint8
PIIX4_PM.disable_s4=uint8
PIIX4_PM.disable_s3=uint8
PIIX4_PM.smb_io_base=uint32
Example of a device where it isn't fixed:
$ qemu-system-x86_64 -device host-x86_64-cpu,help
Can't list properties of device 'host-x86_64-cpu'
Both failed with "Parameter 'driver' expects pluggable device type"
before.
Cc: qemu-stable@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <1443689999-12182-11-git-send-email-armbru@redhat.com>
Several devices don't survive object_unref(object_new(T)): they crash
or hang during cleanup, or they leave dangling pointers behind.
This breaks at least device-list-properties, because
qmp_device_list_properties() needs to create a device to find its
properties. Broken in commit f4eb32b "qmp: show QOM properties in
device-list-properties", v2.1. Example reproducer:
$ qemu-system-aarch64 -nodefaults -display none -machine none -S -qmp stdio
{"QMP": {"version": {"qemu": {"micro": 50, "minor": 4, "major": 2}, "package": ""}, "capabilities": []}}
{ "execute": "qmp_capabilities" }
{"return": {}}
{ "execute": "device-list-properties", "arguments": { "typename": "pxa2xx-pcmcia" } }
qemu-system-aarch64: /home/armbru/work/qemu/memory.c:1307: memory_region_finalize: Assertion `((&mr->subregions)->tqh_first == ((void *)0))' failed.
Aborted (core dumped)
[Exit 134 (SIGABRT)]
Unfortunately, I can't fix the problems in these devices right now.
Instead, add DeviceClass member cannot_destroy_with_object_finalize_yet
to mark them:
* Hang during cleanup (didn't debug, so I can't say why):
"realview_pci", "versatile_pci".
* Dangling pointer in cpus: most CPUs, plus "allwinner-a10", "digic",
"fsl,imx25", "fsl,imx31", "xlnx,zynqmp", because they create such
CPUs
* Assert kvm_enabled(): "host-x86_64-cpu", host-i386-cpu",
"host-powerpc64-cpu", "host-embedded-powerpc-cpu",
"host-powerpc-cpu" (the powerpc ones can't currently reach the
assertion, because the CPUs are only registered when KVM is enabled,
but the assertion is arguably in the wrong place all the same)
Make qmp_device_list_properties() fail cleanly when the device is so
marked. This improves device-list-properties from "crashes, hangs or
leaves dangling pointers behind" to "fails". Not a complete fix, just
a better-than-nothing work-around. In the above reproducer,
device-list-properties now fails with "Can't list properties of device
'pxa2xx-pcmcia'".
This also protects -device FOO,help, which uses the same machinery
since commit ef52358 "qdev-monitor: include QOM properties in -device
FOO, help output", v2.2. Example reproducer:
$ qemu-system-aarch64 -machine none -device pxa2xx-pcmcia,help
Before:
qemu-system-aarch64: .../memory.c:1307: memory_region_finalize: Assertion `((&mr->subregions)->tqh_first == ((void *)0))' failed.
After:
Can't list properties of device 'pxa2xx-pcmcia'
Cc: "Andreas Färber" <afaerber@suse.de>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Anthony Green <green@moxielogic.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Blue Swirl <blauwirbel@gmail.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Jia Liu <proljc@gmail.com>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Walle <michael@walle.cc>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: qemu-ppc@nongnu.org
Cc: qemu-stable@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <1443689999-12182-10-git-send-email-armbru@redhat.com>
The test doesn't check that the output makes any sense, only that QEMU
survives. Useful since we've had an astounding number of crash bugs
around there.
In fact, we have a bunch of them right now: a few devices crash or
hang, and some leave dangling pointers behind. The test skips testing
the broken parts. The next commits will fix them up, and drop the
skipping.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443689999-12182-8-git-send-email-armbru@redhat.com>
New convenience function hmp() to facilitate use of
human-monitor-command in tests. Use it to simplify its existing uses.
To blend into existing libqtest code, also add qtest_hmpv() and
qtest_hmp(). That, and the egregiously verbose GTK-Doc comment format
make this patch look bigger than it is.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1443689999-12182-7-git-send-email-armbru@redhat.com>
We want to run qom-test for every architecture, without having to
manually add it to every architecture's list of tests. Commit 3687d53
accomplished this by adding it to every architecture's list
automatically.
However, some architectures inherit their tests from others, like this:
check-qtest-x86_64-y = $(check-qtest-i386-y)
check-qtest-microblazeel-y = $(check-qtest-microblaze-y)
check-qtest-xtensaeb-y = $(check-qtest-xtensa-y)
For such architectures, we ended up running the (slow!) test twice.
Commit 2b8419c attempted to avoid this by adding the test only when
it's not already present. Works only as long as we consider adding
the test to the architectures on the left hand side *after* the ones
on the right hand side: x86_64 after i386, microblazeel after
microblaze, xtensaeb after xtensa.
Turns out we consider them in $(SYSEMU_TARGET_LIST) order. Defined as
SYSEMU_TARGET_LIST := $(subst -softmmu.mak,,$(notdir \
$(wildcard $(SRC_PATH)/default-configs/*-softmmu.mak)))
On my machine, this results in the oder xtensa, x86_64, microblazeel,
microblaze, i386. Consequently, qom-test runs twice for microblazeel
and x86_64.
Replace this complex and flawed machinery with a much simpler one: add
generic tests (currently just qom-test) to check-qtest-generic-y
instead of check-qtest-$(target)-y for every target, then run
$(check-qtest-generic-y) for every target.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Message-Id: <1443689999-12182-5-git-send-email-armbru@redhat.com>
This is legal; the MemoryRegion will simply unreference all the
existing subregions and possibly bring them down with it as well.
However, it requires a bit of care to avoid an infinite loop.
Finalizing a memory region cannot trigger an address space update,
but memory_region_del_subregion errs on the side of caution and
might trigger a spurious update: avoid that by resetting mr->enabled
first.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1443689999-12182-2-git-send-email-armbru@redhat.com>
When CONFIG_LINUX is off, devices "virtio-keyboard-device",
"virtio-mouse-device", "virtio-tablet-device" and
"virtio-input-host-device" aren't compiled in, yet
"virtio-keyboard-pci", "virtio-mouse-pci", "virtio-tablet-pci" and
"virtio-input-host-pci" still are. Attempts to introspect them crash,
e.g.
$ qemu-system-x86_64 -device virtio-tablet-pci,help
**
ERROR:/work/armbru/qemu/qom/object.c:333:object_initialize_with_type: assertion failed: (type != NULL)
Broken in commit 710e2d9 and commit 006a5ed.
Fix by compiling the "virtio-FOO-pci" exactly when compiling the
"virtio-FOO-device": compile "virtio-keyboard-device",
"virtio-mouse-device", "virtio-tablet-device" regardless of
CONFIG_LINUX, and compile "virtio-input-host-pci" only for
CONFIG_LINUX.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <1444320700-26260-3-git-send-email-armbru@redhat.com>
The next commit will compile hw/input/virtio-input.c and
hw/input/virtio-input-hid.c even when CONFIG_LINUX is off. These
files include both "include/standard-headers/linux/input.h" and
<windows.h> then. Doesn't work, because both define SW_MAX. We don't
actually use it. Patch input.h to define SW_MAX_ instead.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1444320700-26260-2-git-send-email-armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
# gpg: Signature made Fri 09 Oct 2015 10:15:13 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/tracing-pull-request:
trace: remove malloc tracing
docs: update the usage example of "dtrace" backend in tracing.txt
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
trivial patches for 2015-10-08
# gpg: Signature made Thu 08 Oct 2015 17:51:05 BST using RSA key ID A4C3D7DB
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>"
# gpg: aka "Michael Tokarev <mjt@corpit.ru>"
# gpg: aka "Michael Tokarev <mjt@debian.org>"
* remotes/mjt/tags/pull-trivial-patches-2015-10-08:
tests: Unique test path for /string-visitor/output
linux-user: Remove type casts to union type
linux-user: Use g_new() & friends where that makes obvious sense
rocker: Use g_new() & friends where that makes obvious sense
.travis.yml: Run make check for all targets, not just some
hw: char: Remove unnecessary variable
hw: timer: Remove unnecessary variable
qapi: add missing @
MAINTAINERS: Add NSIS file for W32, W64 hosts
target-ppc: Remove unnecessary variable
target-microblaze: Remove unnecessary variable
s/cpu_get_real_ticks/cpu_get_host_ticks/
pc: check for underflow in load_linux
pci-assign: do not include sys/io.h
block/ssh: remove dead code
imx_serial: Generate interrupt on tx empty if enabled
sdhci: Change debug prints to compile unconditionally
sdhci: use PRIx64 for uint64_t type
Add .dir-locals.el file to configure emacs coding style
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The malloc vtable is not supported anymore in glib, because it broke
when constructors called g_malloc. Remove tracing of g_malloc,
g_realloc and g_free calls.
Note that, for systemtap users, glib also provides tracepoints
glib.mem_alloc, glib.mem_free, glib.mem_realloc, glib.slice_alloc
and glib.slice_free.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-id: 1442417924-25831-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The usage example of dtrace is quite ancient, We have tracetool.py with
different parameters instead of the original tracetool shell script for
a long time, So update the old information.
Signed-off-by: Lin Ma <lma@suse.com>
Message-id: 1441954730-17341-1-git-send-email-lma@suse.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Newer GLib's want unique test paths, and thus moan at dupes.
(Seen on Fedora 23 which has glib 2.46)
Uniquify the paths.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Casting to a union type is a gcc (and clang) extension. Other compilers
might not support it. This is not a problem today, but the type casts
can be removed easily. Smatch now no longer complains like before:
linux-user/syscall.c:3190:18: warning: cast to non-scalar
linux-user/syscall.c:7348:44: warning: cast to non-scalar
Cc: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer,
for two reasons. One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.
This commit only touches allocations with size arguments of the form
sizeof(T). Same Coccinelle semantic patch as in commit b45c03f.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer,
for two reasons. One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.
This commit only touches allocations with size arguments of the form
sizeof(T). Same Coccinelle semantic patchas in commit b45c03f.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
ed173cb ".travis.yml: remove "make check" from main matrix" stopped running
make check for all the Travis build targets for various reasons. It
continued to run make check on one Travis build, which builds for a big
list of all (? nearly all) our supported softmmu targets.
Unfortunately, due to a spacing / quoting error it only actually builds for
the alpha, arm, aarch64 and cris targets. Specifically, the list of
targets is split over several lines. Even with YAML folding, this will
leave spaces in the list, meaning $TARGETS won't have the value we need.
I had a look at the YAML spec and I couldn't quickly see a way of splitting
the list so that it doesn't end up with spaces, so this patch fixes the
problem by putting the whole list on one huge line.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This should help clarify the purpose of the function that returns
the host system's CPU cycle count.
Signed-off-by: Christopher Covington <cov@codeaurora.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
ppc portion
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
If (setup_size+1)*512 is small enough, kernel_size -= setup_size can allocate
a huge amount of memory. Avoid that.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This file does not exist on bionic libc and the functions it defines
are in fact not used by pci-assign.c. Remove it.
Reported-by: Houcheng Lin <houcheng@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The "err" label cannot be reached with qp != NULL. Remove the free-ing
of qp and avoid future regressions by removing the initializer.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
ACKed-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Generate an interrupt if the tx buffer is empty and the tx empty interrupt
is enabled. This fixes a problem seen when running a Linux image since
Linux commit 55c3cb1358e ("serial: imx: remove unneeded imx_transmit_buffer()
from imx_start_tx()"). Linux now waits for the tx empty interrupt before
starting to send data, causing transmit stalls until there is an interrupt
for another reason.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Fix compile time warnings, because of type mismatch for unsigned long
long type.
Signed-off-by: Sai Pavan Boddu <saipava@xilinx.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Some default emacs setups indent by 2 spaces and uses tabs
which is counter to the QEMU coding style rules. Adding a
.dir-locals.el file in the top level of the GIT repo will
inform emacs about the QEMU coding style, and so assist
contributors in avoiding common style mistakes before
they submit patches.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Do away with TB retranslation
# gpg: Signature made Wed 07 Oct 2015 10:42:08 BST using RSA key ID 4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg: aka "Richard Henderson <rth@redhat.com>"
# gpg: aka "Richard Henderson <rth@twiddle.net>"
* remotes/rth/tags/pull-tcg-20151007: (26 commits)
tcg: Adjust CODE_GEN_AVG_BLOCK_SIZE
tcg: Check for overflow via highwater mark
tcg: Allocate a guard page after code_gen_buffer
tcg: Emit prologue to the beginning of code_gen_buffer
tcg: Remove tcg_gen_code_search_pc
tcg: Remove gen_intermediate_code_pc
tcg: Save insn data and use it in cpu_restore_state_from_tb
tcg: Pass data argument to restore_state_to_opc
tcg: Add TCG_MAX_INSNS
target-*: Drop cpu_gen_code define
tcg: Merge cpu_gen_code into tb_gen_code
target-sparc: Add npc state to insn_start
target-sparc: Remove gen_opc_jump_pc
target-sparc: Split out gen_branch_n
target-sparc: Tidy gen_branch_a interface
target-cris: Mirror gen_opc_pc into insn_start
target-sh4: Add flags state to insn_start
target-s390x: Add cc_op state to insn_start
target-mips: Add delayed branch state to insn_start
target-i386: Add cc_op state to insn_start
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
NUMA queue, 2015-10-06
# gpg: Signature made Tue 06 Oct 2015 20:53:42 BST using RSA key ID 984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
* remotes/ehabkost/tags/numa-pull-request:
pc-dimm: Fail realization for invalid nodes in non-NUMA config
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This allows virtio-gpu to render in 3d mode.
Uses native opengl support which is present
in gtk versions 3.16 and newer.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This allows virtio-gpu to render in 3d mode.
Uses egl, for gtk versions 3.14 and older.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Add virglrenderer library detection. Add 3d mode to virtio-gpu,
wire up virglrenderer library. When in 3d mode render using the
new context management and texture scanout callbacks.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
For symmetry reasons: virtio_gpu_create_mapping_iov() allocates it so
virtio_gpu_cleanup_mapping_iov() should free it, otherwise it's easy to
miss a free() needed and leak memory.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Optimizing updates by copying the dirty rectangle
only do not work because of double-buffering.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Create a buffer for the vertex data and place vertexes
there at initialization time. Then just use the buffer
for each texture blit.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
At present, the "average" guestimate of TB size is way too small, leading
to many unused entries in the pre-allocated TB array. For a guest with 1GB
ram, we're currently allocating 256MB for the array.
Survey arm, alpha, aarch64, ppc, sparc, i686, x86_64 guests running on
x86_64 and ppc64 hosts and select a new average. The size of the array
drops to 81MB with no more flushing than before.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
We currently pre-compute an worst case code size for any TB, which
works out to be 122kB. Since the average TB size is near 1kB, this
wastes quite a lot of storage.
Instead, check for overflow in between generating code for each opcode.
The overhead of the check isn't measurable and wastage is minimized.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This will catch any overflow of the buffer.
Add a native win32 alternative for alloc_code_gen_buffer;
remove the malloc alternative.
Signed-off-by: Richard Henderson <rth@twiddle.net>
By putting the prologue at the end, we risk overwriting the
prologue should our estimate of maximum TB size. Given the
two different placements of the call to tcg_prologue_init,
move the high water mark computation into tcg_prologue_init.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
It is no longer used, so tidy up everything reached by it.
This includes the gen_opc_* arrays, the search_pc parameter
and the inline gen_intermediate_code_internal functions.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The gen_opc_* arrays are already redundant with the data stored in
the insn_start arguments. Transition restore_state_to_opc to use
data from the latter.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Since jump_pc[1] is always npc + 4, we can infer after incrementing
that jump_pc[1] == pc + 4. Because of that, we can encode the branch
destination into a single word, and store that in npc.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Unify three copies of this code from different
branch types. Fix the case when npc == DYNAMIC_PC,
i.e. a branch within a delay slot.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
We always pass pc2 == dc->npc and r_cond == cpu_cond,
and always set is_br afterward. Infer all of that.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This perhaps isn't ideal in terms of (ab)using the "pc" field
to encode both pc and ppc + delay branch state, as one has to
be aware of this when examining opcode dumps.
But it preserves existing logic, which will be good for bisection,
and it certainly does save storage space.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
With an eye toward having this data replace the gen_opc_* arrays
that each target collects in order to enable restore_state_from_tb.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reduce the boilerplate required for each target. At the same time,
move the test for breakpoint after calling tcg_gen_insn_start.
Note that arm and aarch64 do not use cpu_breakpoint_test, but still
move the inline test down after tcg_gen_insn_start.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
While we're at it, emit the opcode adjacent to where we currently
record data for search_pc. This puts gen_io_start et al on the
"correct" side of the marker.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
EX_CONTEXT_0_0 is used for jumping address, and EX_CONTEXT_0_1 is for
INTERRUPT_CRITICAL_SECTION, which should only be 0 or 1 in user mode, or
it will cause target SIGILL (and the patch doesn't support system mode).
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
For some cases, they are for TILEGX_EXCP_OPCODE_UNKNOWN, not for
TILEGX_EXCP_OPCODE_UNIMPLEMENTED.
Also for some cases, they are for TILEGX_EXCP_OPCODE_UNIMPLEMENTED, not
for TILEGX_EXCP_OPCODE_UNKNOWN.
When analyzing issues, the correct printing information is necessary,
e.g. grep UIMP in gcc testsuite output log for finding qemu tilegx
umimplementation issues, grep UNKNOWN for finding unknown instructions.
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
These are mapped onto some of the normal load instructions, when the
destination is the zero register. Other load insns do fault even
when targeting the zero register.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Using the V1 macro when we want to replicate a byte across
the 8 elements of the word. Using deposit and extract for
manipulating specific elements.
Signed-off-by: Richard Henderson <rth@twiddle.net>
pc_dimm_realize() validates the NUMA node to which memory hotplug is
being performed only in case of NUMA configuration. Include a check to
fail for invalid nodes in case of non-NUMA configuration too.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
s390: fixes
Some fixes all over the place:
- ccw bios and gcc 5.1 (avoid floating point ops)
- properly print vector registers
- sclp and sclp-event-facility no longer hang on object_unref(object_new(T))
- better name for io_subsystem_reset
One feature
- the gdb server now exposes several virtualization specific register
# gpg: Signature made Tue 06 Oct 2015 11:20:24 BST using RSA key ID B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"
* remotes/borntraeger/tags/s390x-20151006:
s390x: rename io_subsystem_reset -> subsystem_reset
s390x/info registers: print vector registers properly
s390x: set missing parent for hotplug and quiesce events
s390x/gdb: expose virtualization specific registers
pc-bios/s390-ccw: avoid floating point operations
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
X86 queue, 2015-10-05
# gpg: Signature made Mon 05 Oct 2015 17:04:38 BST using RSA key ID 984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
* remotes/ehabkost/tags/x86-pull-request:
icc_bus: drop the unused files
cpu/apic: drop icc bus/bridge
x86: use new method to correct reset sequence
apic: move APIC's MMIO region mapping into APIC
Correctly re-init EFER state during INIT IPI
target-i386: add ABM to Haswell* and Broadwell* CPU models
target-i386: get/put MSR_TSC_AUX across reset and migration
target-i386: Make check_hw_breakpoints static
target-i386: Move breakpoint related functions to new file
target-i386: Convert kvm_default_*features to property/value pairs
vl: Add another sanity check to smp_parse() function
cpu: Introduce X86CPUTopoInfo structure for argument simplification
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Mon 05 Oct 2015 17:01:11 BST using RSA key ID AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"
* remotes/jnsnow/tags/ide-pull-request:
qtest/ide-test: ppc64be correction for ATAPI tests
MAINTAINERS: Small IDE/FDC touchup
qtest/ahci: fix redundant assertion
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
vhost-user depends on vhost-net. We should probably fix that.
For now, let's disable the test otherwise.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
At present the memory listener used by vfio to keep host IOMMU mappings
in sync with the guest memory image assumes that if a guest IOMMU
appears, then it has no existing mappings.
This may not be true if a VFIO device is hotplugged onto a guest bus
which didn't previously include a VFIO device, and which has existing
guest IOMMU mappings.
Therefore, use the memory_region_register_iommu_notifier_replay()
function in order to fix this case, replaying existing guest IOMMU
mappings, bringing the host IOMMU into sync with the guest IOMMU.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
When we have guest visible IOMMUs, we allow notifiers to be registered
which will be informed of all changes to IOMMU mappings. This is used by
vfio to keep the host IOMMU mappings in sync with guest IOMMU mappings.
However, unlike with a memory region listener, an iommu notifier won't be
told about any mappings which already exist in the (guest) IOMMU at the
time it is registered. This can cause problems if hotplugging a VFIO
device onto a guest bus which had existing guest IOMMU mappings, but didn't
previously have an VFIO devices (and hence no host IOMMU mappings).
This adds a memory_region_iommu_replay() function to handle this case. It
replays any existing mappings in an IOMMU memory region to a specified
notifier. Because the IOMMU memory region doesn't internally remember the
granularity of the guest IOMMU it has a small hack where the caller must
specify a granularity at which to replay mappings.
If there are finer mappings in the guest IOMMU these will be reported in
the iotlb structures passed to the notifier which it must handle (probably
causing it to flag an error). This isn't new - the VFIO iommu notifier
must already handle notifications about guest IOMMU mappings too short
for it to represent in the host IOMMU.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Depending on the host IOMMU type we determine and record the available page
sizes for IOMMU translation. We'll need this for other validation in
future patches.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
The current vfio core code assumes that the host IOMMU is capable of
mapping any IOVA the guest wants to use to where we need. However, real
IOMMUs generally only support translating a certain range of IOVAs (the
"DMA window") not a full 64-bit address space.
The common x86 IOMMUs support a wide enough range that guests are very
unlikely to go beyond it in practice, however the IOMMU used on IBM Power
machines - in the default configuration - supports only a much more limited
IOVA range, usually 0..2GiB.
If the guest attempts to set up an IOVA range that the host IOMMU can't
map, qemu won't report an error until it actually attempts to map a bad
IOVA. If guest RAM is being mapped directly into the IOMMU (i.e. no guest
visible IOMMU) then this will show up very quickly. If there is a guest
visible IOMMU, however, the problem might not show up until much later when
the guest actually attempt to DMA with an IOVA the host can't handle.
This patch adds a test so that we will detect earlier if the guest is
attempting to use IOVA ranges that the host IOMMU won't be able to deal
with.
For now, we assume that "Type1" (x86) IOMMUs can support any IOVA, this is
incorrect, but no worse than what we have already. We can't do better for
now because the Type1 kernel interface doesn't tell us what IOVA range the
IOMMU actually supports.
For the Power "sPAPR TCE" IOMMU, however, we can retrieve the supported
IOVA range and validate guest IOVA ranges against it, and this patch does
so.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
If a DMA mapping operation fails in vfio_listener_region_add() it
checks to see if we've already completed initial setup of the
container. If so it reports an error so the setup code can fail
gracefully, otherwise throws a hw_error().
There are other potential failure cases in vfio_listener_region_add()
which could benefit from the same logic, so move it to its own
fail: block. Later patches can use this to extend other failure cases
to fail as gracefully as possible under the circumstances.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Currently the VFIOContainer iommu_data field contains a union with
different information for different host iommu types. However:
* It only actually contains information for the x86-like "Type1" iommu
* Because we have a common listener the Type1 fields are actually used
on all IOMMU types, including the SPAPR TCE type as well
In fact we now have a general structure for the listener which is unlikely
to ever need per-iommu-type information, so this patch removes the union.
In a similar way we can unify the setup of the vfio memory listener in
vfio_connect_container() that is currently split across a switch on iommu
type, but is effectively the same in both cases.
The iommu_data.release pointer was only needed as a cleanup function
which would handle potentially different data in the union. With the
union gone, it too can be removed.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
In irqfd mode, current code attempts to set a resamplefd whatever
the type of the IRQ. For an edge-sensitive IRQ this attempt fails
and as a consequence, the whole irqfd setup fails and we fall back
to the slow mode. This patch bypasses the resamplefd setting for
non level-sentive IRQs.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
unmask EventNotifier might not be initialized in case of edge
sensitive irq. Using EventNotifier pointers make life simpler to
handle the edge-sensitive irqfd setup.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
With current implementation, eventfd VFIO signaling is first set up and
then irqfd is setup, if supported and allowed.
This start sequence causes several issues with IRQ forwarding setup
which, if supported, is transparently attempted on irqfd setup:
IRQ forwarding setup is likely to fail if the IRQ is detected as under
injection into the guest (active at irqchip level or VFIO masked).
This currently always happens because the current sequence explicitly
VFIO-masks the IRQ before setting irqfd.
Even if that masking were removed, we couldn't prevent the case where
the IRQ is under injection into the guest.
So the simpler solution is to remove this 2-step startup and directly
attempt irqfd setup. This is what this patch does.
Also in case the eventfd setup fails, there is no reason to go farther:
let's abort.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
After CPU hotplug has been converted to BUS-less hot-plug infrastructure,
the only function ICC bus performs is to propagate reset to LAPICs. However
LAPIC could be reset by registering its reset handler after all device are
initialized.
Do so and drop ~30LOC of not needed anymore ICCBus related code.
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
During reset some devices (such as hpet, rtc) might send IRQ to APIC
which changes APIC's state from default one it's supposed to have
at machine startup time.
Fix this by resetting APIC after devices have been reset to cancel
any changes that qemu_devices_reset() might have done to its state.
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
When ICC bus/bridge is removed, APIC MMIO will be left
unmapped since it was mapped into system's address space
indirectly by ICC bridge.
Fix it by moving mapping into APIC code, so it would be
possible to remove ICC bus/bridge code later.
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
When doing a re-initialization of a CPU core, the default state is to _not_
have 64-bit long mode enabled. This means the LME (long mode enable) and LMA
(long mode active) bits in the EFER model-specific register should be cleared.
However, the EFER state is part of the CPU environment which is
preserved by do_cpu_init(), so if EFER.LME and EFER.LMA were set at the
time an INIT IPI was received, they will remain set after the init completes.
This is contrary to what the Intel architecture manual describes and what
happens on real hardware, and it leaves the CPU in a weird state that the
guest can't clear.
To fix this, the 'efer' member of the CPUX86State structure has been moved
to an area outside the region preserved by do_cpu_init(), so that it can
be properly re-initialized by x86_cpu_reset().
Signed-off-by: Bill Paul <wpaul@windriver.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
ABM is only implemented as a single instruction set by AMD; all AMD
processors support both instructions or neither. Intel considers POPCNT
as part of SSE4.2, and LZCNT as part of BMI1, but Intel also uses AMD's
ABM flag to indicate support for both POPCNT and LZCNT. It has to be
added to Haswell and Broadwell because Haswell, by adding LZCNT, has
completed the ABM.
Tested with "qemu-kvm -cpu Haswell-noTSX,enforce" (and also with older
machine types) on an Haswell-EP machine.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Convert the kvm_default_features and kvm_default_unset_features arrays
into a simple list of property/value pairs that will be applied to
X86CPU objects when using KVM.
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The code in smp_parse already checks the topology information for
sockets * cores * threads < cpus and bails out with an error in
that case. However, it is still possible to supply a bad configuration
the other way round, e.g. with:
qemu-system-xxx -smp 4,sockets=1,cores=4,threads=2
QEMU then still starts the guest, with topology configuration that
is rather incomprehensible and likely not what the user wanted.
So let's add another check to refuse such wrong configurations.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
virtio,pc features, fixes
New features:
guest RAM buffer overrun mitigation
RAM physical address gaps for memory hotplug
(except refactoring which got some review comments)
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Fri 02 Oct 2015 15:04:56 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
vhost-user-test: fix predictable filename on tmpfs
vhost-user-test: use tmpfs by default
pc: memhp: force gaps between DIMM's GPA
memhp: extend address auto assignment to support gaps
vhost-user: unit test for new messages
vhost-user-test: do not reinvent glib-compat.h
virtio: Notice when the system doesn't support MSIx at all
pc: Add a comment explaining why pc_compat_2_4() doesn't exist
exec: allocate PROT_NONE pages on top of RAM
oslib: allocate PROT_NONE pages on top of RAM
oslib: rework anonimous RAM allocation
virtio-net: correctly drop truncated packets
virtio: introduce virtqueue_discard()
virtio: introduce virtqueue_unmap_sg()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
First set of Linux-user que patches for 2.5
# gpg: Signature made Fri 02 Oct 2015 13:38:00 BST using RSA key ID DE3C9BC0
# gpg: Good signature from "Riku Voipio <riku.voipio@iki.fi>"
# gpg: aka "Riku Voipio <riku.voipio@linaro.org>"
* remotes/riku/tags/pull-linux-user-20151002:
linux-user: assert that target_mprotect cannot fail
linux-user/signal.c: Use setup_rt_frame() instead of setup_frame() for target openrisc
linux-user/syscall.c: Add EAGAIN to host_to_target_errno_table for
linux-user: add name_to_handle_at/open_by_handle_at
linux-user: Return target error number in do_fork()
linux-user: fix cmsg conversion in case of multiple headers
linux-user: remove MAX_ARG_PAGES limit
linux-user: remove unused image_info members
linux-user: Treat --foo options the same as -foo
linux-user: use EXIT_SUCCESS and EXIT_FAILURE
linux-user: Add proper error messages for bad options
linux-user: Add -help
linux-user: Exit 0 when -h is used
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
vhost-user-test uses getpid to create a unique filename. This name is
predictable, and a security problem. Instead, use a tmp directory
created by mkdtemp, which is a suggested best practice.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Most people don't run make check by default, so they skip vhost-user
unit tests. Solve this by using tmpfs instead, unless hugetlbfs is
specified (using an environment variable).
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
setting gap to TRUE will make sparse DIMM
address auto allocation, leaving gaps between
a new DIMM address and preceeding existing DIMM.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Data is empty for now, but do make sure master
sets the new feature bit flag.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Block layer patches
# gpg: Signature made Fri 02 Oct 2015 12:49:13 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
* remotes/kevin/tags/for-upstream:
block/raw-posix: Open file descriptor O_RDWR to work around glibc posix_fallocate emulation issue.
block: disable I/O limits at the beginning of bdrv_close()
iotests: Fix test 128 for password-less sudo
tests: Fix test 049 fallout from improved HMP error messages
raw-win32: Fix write request error handling
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
https://bugzilla.redhat.com/show_bug.cgi?id=1265196
The following command fails on an NFS mountpoint:
$ qemu-img create -f qcow2 -o preallocation=falloc disk.img 262144
Formatting 'disk.img', fmt=qcow2 size=262144 encryption=off cluster_size=65536 preallocation='falloc' lazy_refcounts=off
qemu-img: disk.img: Could not preallocate data for the new file: Bad file descriptor
The reason turns out to be because NFS doesn't support the
posix_fallocate call. glibc emulates it instead. However glibc's
emulation involves using the pread(2) syscall. The pread syscall
fails with EBADF if the file descriptor is opened without the read
open-flag (ie. open (..., O_WRONLY)).
I contacted glibc upstream about this, and their response is here:
https://bugzilla.redhat.com/show_bug.cgi?id=1265196#c9
There are two possible fixes: Use Linux fallocate directly, or (this
fix) work around the problem in qemu by opening the file with O_RDWR
instead of O_WRONLY.
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1265196
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Disabling I/O limits from a BDS also drains all pending throttled
requests, so it should be done at the beginning of bdrv_close() with
the rest of the bdrv_drain() calls before the BlockDriver is closed.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
As of 934659c460, $QEMU_IO is generally no
longer a program name, and therefore "sudo -n $QEMU_IO" will no longer
work.
Fix this by copying the qemu-io invocation function from common.config,
making it use $sudo for invoking $QEMU_IO_PROG, and then use that
function instead of $QEMU_IO.
Reported-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Existing code missed to set a parent for the quiesce and hotplug event.
While this didn't matter in practise, new introspection APIs basically now
do an object_unref(object_new(T)), which loops forever.
When trying to remove the event facility bus, the code tries to
unparent all childs on the bus, so they are properly deleted and therefore removed.
As object_unparent() on these child devices doesn't work, as there is no parent,
we loop forever.
Let's fix this by adding the event facility as a parent. Also switch from
object_initialize to object_new, so the only valid reference is in fact the
parent property. This makes it more obvious when the device (state) is actually
gone (and how the reference counting works).
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Message-Id: <1443689387-34473-4-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Some gcc versions (e.g. Fedora 22 gcc 5.1.1) seem to use floating
point registers for spilling and filling of general purpose registers.
As the BIOS does not activate the AFP register setting of CR0 this can
cause data exception program checks.
Disallow floating point in the BIOS as a simple solution.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Message-Id: <1443689387-34473-2-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
# gpg: Signature made Thu 01 Oct 2015 20:02:33 BST using RSA key ID C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg: aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg: aka "Jeffrey Cody <codyprime@gmail.com>"
* remotes/cody/tags/block-pull-request:
block: mirror - fix full sync mode when target does not support zero init
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Set the Microblaze CPU PC in the reset instead of setting it
in the realize. This is required as the PC is zeroed in the
reset function and causes problems in some situations.
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
During mirror, if the target device does not support zero init, a
mirror may result in a corrupted image for sync="full" mode.
This is due to how the initial dirty bitmap is set up prior to copying
data - we did not mark sectors as dirty that are unallocated. This
means those unallocated sectors are skipped over on the target, and for
a device without zero init, invalid data may reside in those holes.
If both of the following conditions are true, then we will explicitly
mark all sectors as dirty:
1.) sync = "full"
2.) bdrv_has_zero_init(target) == false
If the target does support zero init, but a target image is passed in
with data already present (i.e. an "existing" image), it is assumed the
data present in the existing image is valid data for those sectors.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 91ed4bc5bda7e2b09eb508b07c83f4071fe0b3c9.1443705220.git.jcody@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
And do not issue an error_report in that case.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pc_compat_2_4() doesn't exist, and we shouldn't create one. Add a
comment explaining why the function doesn't exist and why pc_compat_*()
functions are deprecated.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This inserts a read and write protected page between RAM and QEMU
memory, for file-backend RAM.
This makes it harder to exploit QEMU bugs resulting from buffer
overflows in devices using variants of cpu_physical_memory_map,
dma_memory_map etc.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
This inserts a read and write protected page between RAM and QEMU
memory. This makes it harder to exploit QEMU bugs resulting from buffer
overflows in devices using variants of cpu_physical_memory_map,
dma_memory_map etc.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
At the moment we first allocate RAM, sometimes more than necessary for
alignment reasons. We then free the extra RAM.
Rework this to avoid the temporary allocation: reserve the
range by mapping it with PROT_NONE, then use just the
necessary range with MAP_FIXED.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
When packet is truncated during receiving, we drop the packets but
neither discard the descriptor nor add and signal used
descriptor. This will lead several issues:
- sg mappings are leaked
- rx will be stalled if a lots of packets were truncated
In order to be consistent with vhost, fix by discarding the descriptor
in this case.
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch introduces virtqueue_discard() to discard a descriptor and
unmap the sgs. This will be used by the patch that will discard
descriptor when packet is truncated.
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
migration/next for 20150930
# gpg: Signature made Wed 30 Sep 2015 09:24:02 BST using RSA key ID 5872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg: aka "Juan Quintela <quintela@trasno.org>"
* remotes/juanquintela/tags/migration/20150930:
migration: Disambiguate MAX_THROTTLE
qmp/hmp: Add throttle ratio to query-migrate and info migrate
migration: Dynamic cpu throttling for auto-converge
migration: Parameters for auto-converge cpu throttling
cpu: Provide vcpu throttling interface
migration: yet more possible state transitions
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
All error conditions that target_mprotect checks are also checked
by target_mmap. EACCESS cannot happen because we are just removing
PROT_WRITE. ENOMEM should not happen because we are modifying a
whole VMA (and we have bigger problems anyway if it happens).
Fixes a Coverity false positive, where Coverity complains about
target_mprotect's return value being passed to tb_invalidate_phys_range.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
qemu has already considered about some targets may have no traditional
signals. And openrisc's setup_frame() is dummy, but it can be supported
by setup_rt_frame().
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Migration has a define for MAX_THROTTLE. Update comment to clarify that this is
used for throttling transfer speed. Hopefully this will prevent it from being
confused with a guest cpu throttling entity.
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Remove traditional auto-converge static 30ms throttling code and replace it
with a dynamic throttling algorithm.
Additionally, be more aggressive when deciding when to start throttling.
Previously we waited until four unproductive memory passes. Now we begin
throttling after only two unproductive memory passes. Four seemed quite
arbitrary and only waiting for two passes allows us to complete the migration
faster.
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Add migration parameters to allow the user to adjust the parameters
that control cpu throttling when auto-converge is in effect. The added
parameters are as follows:
x-cpu-throttle-initial : Initial percantage of time guest cpus are throttled
when migration auto-converge is activated.
x-cpu-throttle-increment: throttle percantage increase each time
auto-converge detects that migration is not making progress.
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Provide a method to throttle guest cpu execution. CPUState is augmented with
timeout controls and throttle start/stop functions. To throttle the guest cpu
the caller simply has to call the throttle set function and provide a percentage
of throttle time.
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
On destination, we move from INMIGRATE to FINISH_MIGRATE. Add that to
the list of allowed states.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Migration queue
# gpg: Signature made Tue 29 Sep 2015 07:13:55 BST using RSA key ID 854083B6
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg: aka "Amit Shah <amit@kernel.org>"
# gpg: aka "Amit Shah <amitshah@gmx.net>"
* remotes/amit-migration/tags/for-juan-201509:
ram_find_and_save_block: Split out the finding
Move dirty page search state into separate structure
migration: Use g_new() & friends where that makes obvious sense
migration: qemu-file more size_t'ifying
migration: size_t'ify some of qemu-file
Init page sizes in qtest
Split out end of migration code from migration_thread
migration/ram.c: Use RAMBlock rather than MemoryRegion
vmstate: Remove redefinition of VMSTATE_UINT32_ARRAY
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer,
for two reasons. One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.
This commit only touches allocations with size arguments of the form
sizeof(T). Same Coccinelle semantic patch as in commit b45c03f.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1442231491-23352-1-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This is a start on using size_t more in qemu-file and friends;
it fixes up QEMUFilePutBufferFunc and QEMUFileGetBufferFunc
to take size_t lengths and return ssize_t return values (like read(2))
and fixes up all the different implementations of them.
Note that I've not yet followed this deeply into bdrv_ implementations.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1439463094-5394-5-git-send-email-dgilbert@redhat.com>
Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This patch allows to run example given by open_by_handle_at(2):
The following shell session demonstrates the use of these two programs:
$ echo 'Can you please think about it?' > cecilia.txt
$ ./t_name_to_handle_at cecilia.txt > fh
$ ./t_open_by_handle_at < fh
open_by_handle_at: Operation not permitted
$ sudo ./t_open_by_handle_at < fh # Need CAP_SYS_ADMIN
Read 31 bytes
$ rm cecilia.txt
Now we delete and (quickly) re-create the file so that it has the same
content and (by chance) the same inode.[...]
$ stat --printf="%i\n" cecilia.txt # Display inode number
4072121
$ rm cecilia.txt
$ echo 'Can you please think about it?' > cecilia.txt
$ stat --printf="%i\n" cecilia.txt # Check inode number
4072121
$ sudo ./t_open_by_handle_at < fh
open_by_handle_at: Stale NFS file handle
See the man page for source code.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Currently, __target_cmsg_nxthdr compares a pointer derived from
target_cmsg against the msg_control field of target_msgh (through
subtraction). This failed for me when emulating i386 code under x86_64,
because pointers in the host address space and pointers in the guest
address space were not the same. This patch passes the initial value of
target_cmsg into __target_cmsg_nxthdr.
I found and fixed two more related bugs:
- __target_cmsg_nxthdr now returns the new cmsg pointer instead of the
old one.
- tgt_space (in host_to_target_cmsg) doesn't count "sizeof (struct
target_cmsghdr)" twice anymore.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Instead of creating a temporary copy for the whole environment and
the arguments, directly copy everything to the target stack.
For this to work, we have to change the order of stack creation and
copying the arguments.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
The system mode binaries provide a similar alias
and it makes common options like --version and --help
work as expected.
Signed-off-by: Meador Inge <meadori@codesourcery.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
As suggested by Laurent, use EXIT_SUCCESS and EXIT_FAILURE from
stdlib.h instead of numeric values.
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This patch adds better support for diagnosing option
parser errors. The previous implementation just printed
the usage text and exited when a bad option or argument
was found. This made it very difficult to determine why
the usage was being displayed and it was doubly confusing
for cases like '--help' (it wasn't clear that --help was
actually an error).
Signed-off-by: Meador Inge <meadori@codesourcery.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This option is already available on the system mode
binaries. It would be better if long options were
supported (i.e. --help), but this is okay for now.
Signed-off-by: Meador Inge <meadori@codesourcery.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
cocoa queue:
* fix stuck-key bug if keys were down when QEMU lost focus
* prompt the user whether they really meant to quit
* remove the 'open image file' dialog box we used to display
if the user started QEMU without arguments
# gpg: Signature made Fri 25 Sep 2015 23:17:19 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
* remotes/pmaydell/tags/pull-cocoa-20150925-1:
ui/cocoa.m: remove open dialog code
ui/cocoa.m: prevent stuck key situation
ui/cocoa.m: verify with user before quitting QEMU
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Removes the open dialog code that runs when no arguments are supplied with QEMU.
Not everyone needs a hard drive or cdrom to boot their target. A user might only
need to use their target's bios to do work. With that said, this patch removes
the unneeded open dialog code.
Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
Message-id: 33856864-321C-4367-9170-FB0BF81E789B@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When the user puts QEMU in the background while holding
down a key, QEMU will not receive the keyup event when
the user lets go of the key. When the user goes back to
QEMU, QEMU will think the key is still down causing
stuck key symptoms. This patch fixes this problem by
releasing all down keys when QEMU goes into the
background.
Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
Message-id: 7A3FA6EE-84C8-4422-A786-C899B7229D32@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch prevents the user from accidentally quitting QEMU by pushing
Command-Q or by pushing the close button on the main window. When
the user does one of these two things, a dialog box appears verifying
with the user if he or she wants to quit QEMU.
Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
Message-id: 29169A74-0347-47F5-934F-A5AD24C225CA@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* First batch of MAINTAINERS updates
* IOAPIC fixes (to pass kvm-unit-tests with -machine kernel_irqchip=off)
* NBD API upgrades from Daniel
* strtosz fixes from Marc-André
* improved support for readonly=on on scsi-generic devices
* new "info ioapic" and "info lapic" monitor commands
* Peter Crosthwaite's ELF_MACHINE cleanups
* docs patches from Thomas and Daniel
# gpg: Signature made Fri 25 Sep 2015 11:20:52 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
* remotes/bonzini/tags/for-upstream: (52 commits)
doc: Refresh URLs in the qemu-tech documentation
docs: describe the QEMU build system structure / design
typedef: add typedef for QemuOpts
i386: interrupt poll processing
i386: partial revert of interrupt poll fix
ppc: Rename ELF_MACHINE to be PPC specific
i386: Rename ELF_MACHINE to be x86 specific
alpha: Remove ELF_MACHINE from cpu.h
mips: Remove ELF_MACHINE from cpu.h
sparc: Remove ELF_MACHINE from cpu.h
s390: Remove ELF_MACHINE from cpu.h
sh4: Remove ELF_MACHINE from cpu.h
xtensa: Remove ELF_MACHINE from cpu.h
tricore: Remove ELF_MACHINE from cpu.h
or32: Remove ELF_MACHINE from cpu.h
lm32: Remove ELF_MACHINE from cpu.h
unicore: Remove ELF_MACHINE from cpu.h
moxie: Remove ELF_MACHINE from cpu.h
cris: Remove ELF_MACHINE from cpu.h
m68k: Remove ELF_MACHINE from cpu.h
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Fri 25 Sep 2015 16:47:31 BST using RSA key ID C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg: aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg: aka "Jeffrey Cody <codyprime@gmail.com>"
* remotes/cody/tags/block-pull-request:
sheepdog: refine discard support
sheepdog: use per AIOCB dirty indexes for non overlapping requests
Backup: don't do copy-on-read in before_write_notifier
block: Introduce a new API bdrv_co_no_copy_on_readv()
sheepdog: add reopen support
block/nfs: cache allocated filesize for read-only files
block/nfs: fix calculation of allocated file size
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Remove muldiv64() by using period instead of frequency
# gpg: Signature made Fri 25 Sep 2015 14:54:37 BST using RSA key ID 3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg: aka "Laurent Vivier <laurent@vivier.eu>"
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C
* remotes/vivier-misc/tags/pull-muldiv64-20150925:
net: remove muldiv64()
bt: remove muldiv64()
hpet: remove muldiv64()
arm: clarify the use of muldiv64()
openrisc: remove muldiv64()
mips: remove muldiv64()
pcnet: remove muldiv64()
rtl8139: remove muldiv64()
i6300esb: remove muldiv64()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
virtio,pc features, fixes
New features:
vhost-user multiqueue support
virtio-ccw virtio 1 support
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Fri 25 Sep 2015 07:40:35 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
MAINTAINERS: add more devices to the PCI section
MAINTAINERS: add more devices to the PC section
vhost-user: add a new message to disable/enable a specific virt queue.
vhost-user: add multiple queue support
vhost: introduce vhost_backend_get_vq_index method
vhost-user: add VHOST_USER_GET_QUEUE_NUM message
vhost: rename VHOST_RESET_OWNER to VHOST_RESET_DEVICE
vhost-user: add protocol feature negotiation
vhost-user: use VHOST_USER_XXX macro for switch statement
virtio-ccw: enable virtio-1
virtio-ccw: feature bits > 31 handling
virtio-ccw: support ring size changes
virtio: ring sizes vs. reset
pc: Introduce pc-*-2.5 machine classes
q35: Move options common to all classes to pc_i440fx_machine_options()
q35: Move options common to all classes to pc_q35_machine_options()
virtio-net: unbreak self announcement and guest offloads after migration
virtio: right size for virtio_queue_get_avail_size
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch refines discard support of the sheepdog driver. The
existing discard mechanism was implemented on SD_OP_DISCARD_OBJ, which
was introduced before fine grained reference counting on newer
sheepdog. It doesn't care about relations of snapshots and clones and
discards objects unconditionally.
With this patch, the driver just updates an inode object for updating
reference. Removing the object is done in sheep process side.
Cc: Teruaki Ishizaki <ishizaki.teruaki@lab.ntt.co.jp>
Cc: Vasiliy Tolstov <v.tolstov@selfip.ru>
Cc: Jeff Cody <jcody@redhat.com>
Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>
Tested-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
Message-id: 1441076590-8015-3-git-send-email-mitake.hitoshi@lab.ntt.co.jp
Signed-off-by: Jeff Cody <jcody@redhat.com>
In the commit 96b14ff85acf, requests for overlapping areas are
serialized. However, it cannot handle a case of non overlapping
requests. In such a case, min_dirty_data_idx and max_dirty_data_idx
can be overwritten by the requests and invalid inode update can
happen e.g. a case like create(1, 2) and create(3, 4) are issued in
parallel.
This patch lets SheepdogAIOCB have dirty data indexes instead of
BDRVSheepdogState for avoiding the above situation.
This patch also does trivial renaming for better description:
overwrapping -> overlapping
Cc: Teruaki Ishizaki <ishizaki.teruaki@lab.ntt.co.jp>
Cc: Vasiliy Tolstov <v.tolstov@selfip.ru>
Cc: Jeff Cody <jcody@redhat.com>
Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>
Tested-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
Message-id: 1441076590-8015-2-git-send-email-mitake.hitoshi@lab.ntt.co.jp
Signed-off-by: Jeff Cody <jcody@redhat.com>
muldiv64() is used to convert nanoseconds to microseconds.
x = muldiv64(qemu_clock_get_ns(..), 1000000, get_ticks_per_sec());
As get_ticks_per_sec() is 10^9, it can be replaced by:
x = qemu_clock_get_us(..);
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Originally, timers were ticks based, and it made sense to
add ticks to current time to know when to trigger an alarm.
But since commit:
7447545 change all other clock references to use nanosecond resolution accessors
All timers use nanoseconds and we need to convert ticks to nanoseconds.
As get_ticks_per_sec() is 10^9,
a = muldiv64(b, get_ticks_per_sec(), 100);
y = muldiv64(x, get_ticks_per_sec(), 1000000);
can be converted to
a = b * 10000000;
y = x * 1000;
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
hpet defines a clock period in femtoseconds but
then converts it to nanoseconds to use the internal
timers.
We can define the period in nanoseconds and use it
directly, this allows to remove muldiv64().
We only need to convert the period to femtoseconds
to put it in internal hpet capability register.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
muldiv64() is used to convert microseconds into CPU ticks.
But it is not clear and not commented. This patch uses macro
to clearly identify what is used: time, CPU frequency and ticks.
For an elapsed time and a given frequency, we compute how many ticks
we have.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Originally, timers were ticks based, and it made sense to
add ticks to current time to know when to trigger an alarm.
But since commit:
7447545 change all other clock references to use nanosecond resolution accessors
All timers use nanoseconds and we need to convert ticks to nanoseconds, by
doing something like:
y = muldiv64(x, get_ticks_per_sec(), TIMER_FREQ)
where x is the number of device ticks and y the number of system ticks.
y is used as nanoseconds in timer functions,
it works because 1 tick is 1 nanosecond.
(get_ticks_per_sec() is 10^9)
But as openrisc timer frequency is 20 MHz, we can also do:
y = x * 50; /* 20 MHz period is 50 ns */
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Originally, timers were ticks based, and it made sense to
add ticks to current time to know when to trigger an alarm.
But since commit:
7447545 change all other clock references to use nanosecond resolution accessors
All timers use nanoseconds and we need to convert ticks to nanoseconds, by
doing something like:
y = muldiv64(x, get_ticks_per_sec(), TIMER_FREQ)
where x is the number of device ticks and y the number of system ticks.
y is used as nanoseconds in timer functions,
it works because 1 tick is 1 nanosecond.
(get_ticks_per_sec() is 10^9)
But as MIPS timer frequency is 100 MHz, we can also do:
y = x * 10; /* 100 MHz period is 10 ns */
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Originally, timers were ticks based, and it made sense to
add ticks to current time to know when to trigger an alarm.
But since commit:
7447545 change all other clock references to use nanosecond resolution accessors
All timers use nanoseconds and we need to convert ticks to nanoseconds, by
doing something like:
y = muldiv64(x, get_ticks_per_sec(), PCI_FREQUENCY)
where x is the number of device ticks and y the number of system ticks.
y is used as nanoseconds in timer functions,
it works because 1 tick is 1 nanosecond.
(get_ticks_per_sec() is 10^9)
But as PCI frequency is 33 MHz, we can also do:
y = x * 30; /* 33 MHz PCI period is 30 ns */
Which is much more simple.
This implies a 33.333333 MHz PCI frequency,
but this is correct.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Originally, timers were ticks based, and it made sense to
add ticks to current time to know when to trigger an alarm.
But since commit:
7447545 change all other clock references to use nanosecond resolution accessors
All timers use nanoseconds and we need to convert ticks to nanoseconds, by
doing something like:
y = muldiv64(x, get_ticks_per_sec(), PCI_FREQUENCY)
where x is the number of device ticks and y the number of system ticks.
y is used as nanoseconds in timer functions,
it works because 1 tick is 1 nanosecond.
(get_ticks_per_sec() is 10^9)
But as PCI frequency is 33 MHz, we can also do:
y = x * 30; /* 33 MHz PCI period is 30 ns */
Which is much more simple.
This implies a 33.333333 MHz PCI frequency,
but this is correct.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Originally, timers were ticks based, and it made sense to
add ticks to current time to know when to trigger an alarm.
But since commit:
7447545 change all other clock references to use nanosecond resolution accessors
All timers use nanoseconds and we need to convert ticks to nanoseconds, by
doing something like:
y = muldiv64(x, get_ticks_per_sec(), PCI_FREQUENCY)
where x is the number of device ticks and y the number of system ticks.
y is used as nanoseconds in timer functions,
it works because 1 tick is 1 nanosecond.
(get_ticks_per_sec() is 10^9)
But as PCI frequency is 33 MHz, we can also do:
y = x * 30; /* 33 MHz PCI period is 30 ns */
Which is much more simple.
This implies a 33.333333 MHz PCI frequency,
but this is correct.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
We will copy data in before_write_notifier to do backup.
It is a nested I/O request, so we cannot do copy-on-read.
The steps to reproduce it:
1. -drive copy-on-read=on,... // qemu option
2. drive_backup -f disk0 /path_to_backup.img // monitor command
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Tested-by: Jeff Cody <jcody@redhat.com>
Message-id: 1441682913-14320-3-git-send-email-wency@cn.fujitsu.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
If the file is readonly its not expected to grow so
save the blocking call to nfs_fstat_async and use
the value saved at connection time. Also important
the monitor (and thus the main loop) will not hang
if block device info is queried and the NFS share
is unresponsive.
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 1440671441-7978-1-git-send-email-pl@kamp.de
Signed-off-by: Jeff Cody <jcody@redhat.com>
Developers who are new to QEMU, or have a background familiarity
with GNU autotools, can have trouble getting their head around the
home-grown QEMU build system. This document attempts to explain
the structure / design of the configure script and the various
Makefile pieces that live across the source tree.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1443102098-13642-1-git-send-email-berrange@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch updates x86_cpu_exec_interrupt function.
It can process two interrupt request at a time (poll and another one).
This makes its execution non-deterministic. Determinism is requred
for recorded icount execution.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162410.8676.13042.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Rename ELF_MACHINE to be PPC specific. This is used as-is by the
various PPC bootloaders and is locally defined to ELF_MACHINE in linux
user in PPC specific ifdeffery.
This removes another architecture specific definition from the global
namespace (as desired by multi-arch).
Cc: Alexander Graf <agraf@suse.de>
Cc: qemu-ppc@nongnu.org
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Rename ELF_MACHINE to be I386 specific. This is used as-is by the
multiboot loader.
Linux-user previously used this definition but will not anymore,
falling back to the default bahaviour of using ELF_ARCH as ELF_MACHINE.
This removes another architecture specific definition from the global
namespace.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The only generic code relying on this is linux-user, but linux users'
default behaviour of defaulting ELF_MACHINE to ELF_ARCH will handle
this.
The bootloaders can just pass EM_MIPS directly, as that is
architecture specific code.
This removes another architecture specific definition from the global
namespace.
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The bootloaders can just pass EM_SPARC or EM_SPARCV9 directly, as
they are architecture specific code (to one or the other).
This removes another architecture specific definition from the global
namespace.
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The bootloader can just pass EM_S390 directly, as that
is architecture specific code.
This removes another architecture specific definition from the global
namespace.
Cc: Richard Henderson <rth@twiddle.net>
Cc: Alexander Graf <agraf@suse.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The only generic code relying on this is linux-user, but linux users'
default behaviour of defaulting ELF_MACHINE to ELF_ARCH will handle
this.
This removes another architecture specific definition from the global
namespace.
Cc: Aurelien Jarno <aurelien@aurel32.net>
Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The bootloaders can just pass EM_XTENSA directly, as that
is architecture specific code.
This removes another architecture specific definition from the global
namespace.
Cc: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The only generic code relying on this is linux-user, but linux users'
default behaviour of defaulting ELF_MACHINE to ELF_ARCH will handle
this.
The bootloader can just pass EM_OPENRISC directly, as that is
architecture specific code.
This removes another architecture specific definition from the global
namespace.
Cc: Jia Liu <proljc@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The bootloaders can just pass EM_LATTICEMICO32 directly, as that is
architecture specific code.
This removes another architecture specific definition from the global
namespace.
Cc: Michael Walle <michael@walle.cc>
Acked-By: Michael Walle <michael@walle.cc>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The only generic code relying on this is linux-user, but linux users'
default behaviour of defaulting ELF_MACHINE to ELF_ARCH will handle
this.
This removes another architecture specific definition from the global
namespace.
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The bootloader can just pass EM_MOXIE directly, as that is architecture
specific code.
This removes another architecture specific definition from the global
namespace.
Cc: Anthony Green <green@moxielogic.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The only generic code relying on this is linux-user, but linux users'
default behaviour of defaulting ELF_MACHINE to ELF_ARCH will handle
this.
The bootloader can just pass EM_CRIS directly, as that is architecture
specific code.
This removes another architecture specific definition from the global
namespace.
Cc: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The only generic code relying on this is linux-user, but linux users'
default behaviour of defaulting ELF_MACHINE to ELF_ARCH will handle
this.
The machine model bootloaders can just pass EM_68K directly, as that
is architecture specific code.
This removes another architecture specific definition from the global
namespace.
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: Greg Ungerer <gerg@uclinux.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Reviewed-by: Greg Ungerer <gerg@uclinux.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The only generic code relying on this is linux-user, but linux-users'
default behaviour or setting ELF_MACHINE to ELF_ARCH will handle this.
The microblaze bootloader can just pass EM_MICROBLAZE directly, as that
is architecture specific code.
This removes another architecture specific definition from the global
namespace.
Cc: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The only generic code relying on this is linux-user. Linux user
already has a lot of #ifdef TARGET_ customisation so instead, define
ELF_ARCH as either EM_ARM or EM_AARCH64 appropriately.
The armv7m bootloader can just pass EM_ARM directly, as that
is architecture specific code. Note that arm_boot already has its own
logic selecting an arm specific elf machine so this makes V7M more
consistent with arm_boot.
This removes another architecture specific definition from the global
namespace.
Cc: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
EM_MOXIE now has a proper assigned elf code. Use it. Register the old
interim value as EM_MOXIE_OLD and accept either in elf loading.
Cc: Anthony Green <green@moxielogic.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fix the coding style for these cases as per CODING_STYLE. Reverse the
Yoda conditions and add missing if braces.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
For many arch's this macro is defined as the predicatable behaviour
of checking the argument for eqaulity against ELF_ARCH. Provide a
default define as such, so only archs with special handling (usually
allowing multiple EM values) need to provide a def.
Arches that do any of:
1: provide this def exactly the same way as the new default
(alpha, x86_64)
2: check against ELF_MACHINE while defining ELF_ARCH == ELF_MACHINE
(arm, aarch64)
3: check against EM_FOO directly while defining ELF_ARCH == EM_FOO
(unicore32, sparc32, ppc32, mips, openrisc, sh4, cris, m86k)
have their elf_check_arch removed as the default will provide the
correct behaviour.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In most (but not all) cases, ELF_MACHINE and ELF_ARCH are safely the
same. Default ELF_MACHINE to ELF_ARCH. This makes defining ELF_MACHINE
optional for target-*/cpu.h when they are known to match.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The arbitration register should read to the same value as the
IOAPIC id register. Fixes kvm-unit-tests ioapic.flat.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If a level-triggered interrupt goes down and back up before the
corresponding EOI, it should be coalesced. This fixes one testcase
in kvm-unit-tests' ioapic.flat.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
"Match a single C-language char (octet) even if that is part of a larger
UTF-8 character. Thus it breaks up characters into their UTF-8 bytes,
so you may end up with malformed pieces of UTF-8."
Just use a period instead.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Steve Ellcey / Leon Alrae reported that QEMU fails to build when
the VPATH directory is outside of the GIT tree, and the system
emulators & tools build is disabled. eg
cd ..
mkdir build
cd build
../qemu/configure --disable-system --disable-tools
make
(...)
make[1]: *** No rule to make target `../qom/object.o', needed by `qemu-aarch64'. Stop.
make: *** [subdir-aarch64-linux-user] Error 2
The problem is due to the fact that some sub directory deps
were listed against SOFTMMU_SUBDIR_RULES instead of SUBDIR_RULES,
so were only processed for system emulators, not user emalutors.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1442570495-22029-1-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Passed-through SCSI devices can be opened with the readonly=on option.
When this happens, Linux filters away write commands so that the guest
cannot overwrite the contents of the device.
However, the guest does not know that the device is read-only, and
accepts writes. The writes only fail later when the page cache is
flushed.
This patch modifies scsi-generic to modify the MODE SENSE data and
set the read-only bit in the device-specific parameters, so that
the guest OS treats the disk as write protected.
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
For chipset devices, I can co-maintain it with Michael.
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
wxx patch queue
# gpg: Signature made Thu 24 Sep 2015 20:24:50 BST using RSA key ID 677450AD
# gpg: Good signature from "Stefan Weil <sw@weilnetz.de>"
# gpg: aka "Stefan Weil <stefan.weil@weilnetz.de>"
# gpg: aka "Stefan Weil <stefan.weil@bib.uni-mannheim.de>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 4923 6FEA 75C9 5D69 8EC2 B78A E08C 21D5 6774 50AD
* remotes/weil/tags/pull-wxx-20150924:
oslib-win32: only provide localtime_r/gmtime_r if missing
gtk: avoid redefining _WIN32_WINNT macro
qemu-thread: add a fast path to the Win32 QemuEvent
slirp: Fix non blocking connect for w32
nsis: Add QEMU version information to Windows registry
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The oslib-win32 file currently provides a localtime_r and
gmtime_r replacement unconditionally. Some versions of
Mingw-w64 would provide crude macros for localtime_r/gmtime_r
which QEMU takes care to disable. Latest versions of Mingw-w64
now provide actual functions for localtime_r/gmtime_r, but
with a twist that you have to include unistd.h or pthread.h
before including time.h. By luck some files in QEMU have
such an include order, resulting in compile errors:
CC util/osdep.o
In file included from include/qemu-common.h:48:0,
from util/osdep.c:48:
include/sysemu/os-win32.h:77:12: error: redundant redeclaration of 'gmtime_r' [-Werror=redundant-decls]
struct tm *gmtime_r(const time_t *timep, struct tm *result);
^
In file included from include/qemu-common.h:35:0,
from util/osdep.c:48:
/usr/i686-w64-mingw32/sys-root/mingw/include/time.h:272:107: note: previous definition of 'gmtime_r' was here
In file included from include/qemu-common.h:48:0,
from util/osdep.c:48:
include/sysemu/os-win32.h:79:12: error: redundant redeclaration of 'localtime_r' [-Werror=redundant-decls]
struct tm *localtime_r(const time_t *timep, struct tm *result);
^
In file included from include/qemu-common.h:35:0,
from util/osdep.c:48:
/usr/i686-w64-mingw32/sys-root/mingw/include/time.h:269:107: note: previous definition of 'localtime_r' was here
This change adds a configure test to see if localtime_r
exits, and only enables the QEMU impl if missing. We also
re-arrange qemu-common.h try attempt to guarantee that all
source files get unistd.h before time.h and thus see the
localtime_r/gmtime_r defs.
[sw: Use "official" spellings for Mingw-w64, MinGW in comments.]
[sw: Terminate sentences with a dot in comments.]
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
When building for Mingw64 target on Fedora 22 a warning
is issued about _WIN32_WINNT being redefined.
In file included from ui/gtk.c:40:0:
include/ui/gtk.h:5:0: warning: "_WIN32_WINNT" redefined
# define _WIN32_WINNT 0x0601 /* needed to get definition of MAPVK_VK_TO_VSC */
^
In file included from /usr/i686-w64-mingw32/sys-root/mingw/include/crtdefs.h:10:0,
from /usr/i686-w64-mingw32/sys-root/mingw/include/stdio.h:9,
from /home/berrange/src/virt/qemu/include/qemu/fprintf-fn.h:12,
from /home/berrange/src/virt/qemu/include/qemu-common.h:18,
from ui/gtk.c:37:
/usr/i686-w64-mingw32/sys-root/mingw/include/_mingw.h:225:0: note: this is the location of the previous definition
#define _WIN32_WINNT 0x502
^
Rather than try to get MAPVK_VK_TO_VSC defined indirectly
by defining _WIN32_WINNT, instead just define it explicitly
if missing.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
QemuEvents are used heavily by call_rcu. We do not want them to be slow,
but the current implementation does a kernel call on every invocation
of qemu_event_* and won't cut it.
So, wrap a Win32 manual-reset event with a fast userspace path. The
states and transitions are the same as for the futex and mutex/condvar
implementations, but the slow path is different of course. The idea
is to reset the Win32 event lazily, as part of a test-reset-test-wait
sequence. Such a sequence is, indeed, how QemuEvents are used by
RCU and other subsystems!
The patch includes a formal model of the algorithm.
Tested-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
The uninstall keys include an option key "DisplayVersion" which we set
now. By default the version value is read from file VERSION, but it is
also possible to pass VERSION=#.#.# to make.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Remove libcacard
# gpg: Signature made Wed 23 Sep 2015 22:37:11 BST using RSA key ID 75969CE5
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>"
# gpg: aka "Marc-André Lureau <marcandre.lureau@gmail.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276 F62D DAE8 E109 7596 9CE5
* remotes/elmarco/tags/rm-libcacard:
libcacard: use the standalone project
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add a new message, VHOST_USER_SET_VRING_ENABLE, to enable or disable
a specific virt queue, which is similar to attach/detach queue for
tap device.
virtio driver on guest doesn't have to use max virt queue pair, it
could enable any number of virt queue ranging from 1 to max virt
queue pair.
Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
This patch is initially based a patch from Nikolay Nikolaev.
This patch adds vhost-user multiple queue support, by creating a nc
and vhost_net pair for each queue.
Qemu exits if find that the backend can't support the number of requested
queues (by providing queues=# option). The max number is queried by a
new message, VHOST_USER_GET_QUEUE_NUM, and is sent only when protocol
feature VHOST_USER_PROTOCOL_F_MQ is present first.
The max queue check is done at vhost-user initiation stage. We initiate
one queue first, which, in the meantime, also gets the max_queues the
backend supports.
In older version, it was reported that some messages are sent more times
than necessary. Here we came an agreement with Michael that we could
categorize vhost user messages to 2 types: non-vring specific messages,
which should be sent only once, and vring specific messages, which should
be sent per queue.
Here I introduced a helper function vhost_user_one_time_request(), which
lists following messages as non-vring specific messages:
VHOST_USER_SET_OWNER
VHOST_USER_RESET_DEVICE
VHOST_USER_SET_MEM_TABLE
VHOST_USER_GET_QUEUE_NUM
For above messages, we simply ignore them when they are not sent the first
time.
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
Minusing the idx with the base(dev->vq_index) for vhost-kernel, and
then adding it back for vhost-user doesn't seem right. Here introduces
a new method vhost_backend_get_vq_index() for getting the right vq
index for following vhost messages calls.
Suggested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
This is for querying how many queues the backend supports if it has mq
support(when VHOST_USER_PROTOCOL_F_MQ flag is set from the quried
protocol features).
vhost_net_get_max_queues() is the interface to export that value, and
to tell if the backend supports # of queues user requested, which is
done in the following patch.
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
Support a separate bitmask for vhost-user protocol features,
and messages to get/set protocol features.
Invoke them at init.
No features are defined yet.
[ leverage vhost_user_call for request handling -- Yuanhan Liu ]
Signed-off-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
So that we could let vhost_user_call to handle extented requests,
such as VHOST_USER_GET/SET_PROTOCOL_FEATURES, instead of invoking
vhost_user_read/write and constructing the msg again by ourself.
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
Let's enable revision 1 for virtio-ccw devices. We can always offer
VERSION_1 as drivers in legacy mode won't be able to see it anyway.
We have to introduce a way to set a lower maximum revision for a device
to accommodate the following cases:
- compat machines (to enforce legacy only)
- virtio-blk with scsi support (version 1 + scsi is fenced by common
code, with a user-configured max revision of 0 we can allow scsi
via not offering VERSION_1)
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
We currently switch off the VERSION_1 feature bit if the guest has
not negotiated at least revision 1. As no feature bits beyond 31 are
valid however unless VERSION_1 has been negotiated, make sure that
legacy guests never see a feature bit beyond 31.
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Wire up changing the ring size for virtio-1 devices.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
We allow guests to change the size of the virtqueue rings by supplying
a number of buffers that is different from the number of buffers the
device was initialized with. Current code has some problems, however,
since reset does not reset the ringsizes to the default values (as this
is not saved anywhere).
Let's extend the core code to keep track of the default ringsizes and
migrate them once the guest changed them for any of the virtqueues
for a device.
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The existing default_machine_opts and default_display settings will
still apply to future machine classes. So it makes sense to move them to
pc_i440fx_machine_options() instead of keeping them in a
version-specific machine_options function.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The existing default_machine_opts, default_display, no_floppy, and
no_tco settings will still apply to future machine classes. So it makes
sense to move them to pc_q35_machine_options() instead of keeping them
in a version-specific machine_options function.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
After commit 019a3edbb2 ("virtio: make
features 64bit wide"). Device's guest_features was actually set after
vdc->load(). This breaks the assumption that device specific load()
function can check guest_features. For virtio-net, self announcement
and guest offloads won't work after migration.
Fixing this by defer them to virtio_net_load() where guest_features
were guaranteed to be set. Other virtio devices looks fine.
Fixes: 019a3edbb2
("virtio: make features 64bit wide")
Cc: qemu-stable@nongnu.org
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Being working on dataplane I notice something strange:
virtio_queue_get_avail_size() used a 64bit size index
for the calculation of the available ring size.
It is quite strange but it did work with the old calculation
of the avail ring, at most with performance penalty,
and I wonder where I missed something.
This patch let use a 16bit size as defined in virtio_ring.h
Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
target-arm queue:
* support VGICv3 in KVM
* fix bug in ACPI table entries for flash devices in virt board
* update Allwinner entry in MAINTAINERS
# gpg: Signature made Thu 24 Sep 2015 01:29:55 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
* remotes/pmaydell/tags/pull-target-arm-20150924:
MAINTAINERS: update Allwinner A10 maintainer
hw/arm/virt-acpi-build: Fix wrong size of flash in ACPI table
hw/arm/virt: Add gic-version option to virt machine
hw/intc: Initial implementation of vGICv3
arm_kvm: Do not assume particular GIC type in kvm_arch_irqchip_create()
intc/gic: Extract some reusable vGIC code
hw/intc: Implement GIC-500 base class
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
While virt machine creates two flash devices with total size 0x08000000,
the ACPI table generation code was wrongly using this total size as the
size of each flash device, so it would overlap other MMIO spaces.
Make each device entry in the table half the total; this brings the
ACPI table into line with the code which generates the device tree
and which creates the flash devices themselves.
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Wei Huang <wei@redhat.com>
Tested-by: Graeme Gregory <graeme.gregory@linaro.org>
Message-id: 1442455041-6596-1-git-send-email-shannon.zhao@linaro.org
[PMM: edited commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add gic_version to VirtMachineState, set it to value of the option
and pass it around where necessary. Instantiate devices and fdt
nodes according to the choice.
max_cpus for virt machine increased to 123 (calculated from redistributor
space available in the memory map). GICv2 compatibility check happens
inside arm_gic_common_realize().
ITS region is added to the memory map too, however currently it not used,
just reserved.
Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Tested-by: Ashok kumar <ashoks@broadcom.com>
[PMM: Added missing cpu_to_le* calls, thanks to Shannon Zhao]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Some functions previously used only by vGICv2 are useful also for vGICv3
implementation. Untie them from GICState and make accessible from within
other modules:
- kvm_arm_gic_set_irq()
- kvm_gic_supports_attr() - moved to common code and renamed to
kvm_device_check_attr()
- kvm_gic_access() - turned into GIC-independent kvm_device_access().
Data pointer changed to void * because some GICv3 registers are
64-bit wide
Some of these changes are not used right now, but they will be helpful for
implementing live migration.
Actually kvm_dist_get() and kvm_dist_put() could also be made reusable, but
they would require two extra parameters (s->dev_fd and s->num_cpu) as well as
lots of typecasts of 's' to DeviceState * and back to GICState *. This makes
the code very ugly so i decided to stop at this point. I tried also an
approach with making a base class for all possible GICs, but it would contain
only three variables (dev_fd, cpu_num and irq_num), and accessing them through
the rest of the code would be again tedious (either ugly casts or qemu-style
separate object pointer). So i disliked it too.
Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Tested-by: Ashok kumar <ashoks@broadcom.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 2ef56d1dd64ffb75ed02a10dcdaf605e5b8ff4f8.1441784344.git.p.fedin@samsung.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
libcacard is now a standalone project hosted with the Spice project (see
the 2.5.0 release announcement), remove it from qemu tree.
Use the library if found during configure or if --enable-smartcard.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Paolo Bonzini <pbonzini@redhat.com>
VFIO updates 2015-09-23
- Tracing improvements to use common prefixes for functional areas
- Quirks overhaul:
- Split PCI quirks to separate file
- Make them understandable and more extensible
- Improve use of MemoryRegions and eliminate use of target pagesize
- Eliminate build-time debugging, everything migrated to runtime opts
# gpg: Signature made Wed 23 Sep 2015 21:09:05 BST using RSA key ID 3BB08B22
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>"
# gpg: aka "Alex Williamson <alex@shazbot.org>"
# gpg: aka "Alex Williamson <alwillia@redhat.com>"
# gpg: aka "Alex Williamson <alex.l.williamson@gmail.com>"
* remotes/awilliam/tags/vfio-update-20150923.0:
vfio/pci: Add emulated PCI IDs
vfio/pci: Cache vendor and device ID
vfio/pci: Move AMD device specific reset to quirks
vfio/pci: Remove old config window and mirror quirks
vfio/pci: Config mirror quirk
vfio/pci: Config window quirks
vfio/pci: Rework RTL8168 quirk
vfio/pci: Cleanup Nvidia 0x3d0 quirk
vfio/pci: Cleanup ATI 0x3c3 quirk
vfio/pci: Foundation for new quirk structure
vfio/pci: Cleanup ROM blacklist quirk
vfio/pci: Split quirks to a separate file
vfio/pci: Extract PCI structures to a separate header
vfio: Change polarity of our no-mmap option
vfio/pci: Make interrupt bypass runtime configurable
vfio/pci: Rename MSI/X functions for easier tracing
vfio/pci: Rename INTx functions for easier tracing
vfio/pci: Cleanup vfio_early_setup_msix() error path
vfio/pci: Cleanup RTL8168 quirk and tracing
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Specifying an emulated PCI vendor/device ID can be useful for testing
various quirk paths, even though the behavior and functionality of
the device with bogus IDs is fully unsupportable. We need to use a
uint32_t for the vendor/device IDs, even though the registers
themselves are only 16-bit in order to be able to determine whether
the value is valid and user set.
The same support is added for subsystem vendor/device ID, though these
have the possibility of being useful and supported for more than a
testing tool. An emulated platform might want to impose their own
subsystem IDs or at least hide the physical subsystem ID. Windows
guests will often reinstall drivers due to a change in subsystem IDs,
something that VM users may want to avoid. Of course careful
attention would be required to ensure that guest drivers do not rely
on the subsystem ID as a basis for device driver quirks.
All of these options are added using the standard experimental option
prefix and should not be considered stable.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Simplify access to commonly referenced PCI vendor and device ID by
caching it on the VFIOPCIDevice struct.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This is just another quirk, for reset rather than affecting memory
regions. Move it to our new quirks file.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Config windows make use of an address register and a data register.
In VGA cards, these are often used to provide real mode code in the
BIOS an easy way to access MMIO registers since the window often
resides in an I/O port register. When the MMIO register has a mirror
of PCI config space, we need to trap those accesses and redirect them
to emulated config space.
The previous version of this functionality made use of a single
MemoryRegion and single match address. This version uses separate
MemoryRegions for each of the address and data registers and allows
for multiple match addresses. This is useful for Nvidia cards which
have two ranges which index into PCI config space.
The previous implementation is left for the follow-on patch for a more
reviewable diff.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Another rework of this quirk, this time to update to the new quirk
structure. We can handle the address and data registers with
separate MemoryRegions and a quirk specific data structure, making the
code much more understandable.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
The Nvidia 0x3d0 quirk makes use of a two separate registers and gives
us our first chance to make use of separate memory regions for each to
simplify the code a bit.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This is an easy quirk that really doesn't need a data structure if
its own. We can pass vdev as the opaque data and access to the
MemoryRegion isn't required.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
VFIOQuirk hosts a single memory region and a fixed set of data fields
that try to handle all the quirk cases, but end up making those that
don't exactly match really confusing. This patch introduces a struct
intended to provide more flexibility and simpler code. VFIOQuirk is
stripped to its basics, an opaque data pointer for quirk specific
data and a pointer to an array of MemoryRegions with a counter. This
still allows us to have common teardown routines, but adds much
greater flexibility to support multiple memory regions and quirk
specific data structures that are easier to maintain. The existing
VFIOQuirk is transformed into VFIOLegacyQuirk, which further patches
will eliminate entirely.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Create a vendor:device ID helper that we'll also use as we rework the
rest of the quirks. Re-reading the config entries, even if we get
more blacklist entries, is trivial overhead and only incurred during
device setup. There's no need to typedef the blacklist structure,
it's a static private data type used once. The elements get bumped
up to uint32_t to avoid future maintenance issues if PCI_ANY_ID gets
used for a blacklist entry (avoiding an actual hardware match). Our
test loop is also crying out to be simplified as a for loop.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
The default should be to allow mmap and new drivers shouldn't need to
expose an option or set it to other than the allocation default in
their initfn. Take advantage of the experimental flag to change this
option to the correct polarity.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Tracing is more effective when we can completely disable all KVM
bypass paths. Make these runtime rather than build-time configurable.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This allows vfio_msi* tracing. The MSI/X interrupt tracing is also
pulled out of #ifdef DEBUG_VFIO to avoid a recompile for tracing this
path. A few cycles to read the message is hardly anything if we're
already in QEMU.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Rename functions and tracing callbacks so that we can trace vfio_intx*
to see all the INTx related activities.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
With the addition of the Chelsio quirk we have an error path out of
vfio_early_setup_msix() that doesn't free the allocated VFIOMSIXInfo
struct. This doesn't introduce a leak as it still gets freed in the
vfio_put_device() path, but it's complicated and sloppy to rely on
that. Restructure to free the allocated data on error and only link
it into the vdev on success.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Reported-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
There's quite a bit of cleanup that can be done to the RTL8168 quirk,
as well as the tracing to prevent a spew of uninteresting accesses
for anything else the driver might choose to use the window registers
for besides the MSI-X table. There should be no functional change,
but it's now possible to get compact and useful traces by enabling
vfio_rtl8168_quirk*, ex:
vfio_rtl8168_quirk_write 0000:04:00.0 [address]: 0x1f000
vfio_rtl8168_quirk_read 0000:04:00.0 [address]: 0x8001f000
vfio_rtl8168_quirk_read 0000:04:00.0 [data]: 0xfee0100c
vfio_rtl8168_quirk_write 0000:04:00.0 [address]: 0x1f004
vfio_rtl8168_quirk_read 0000:04:00.0 [address]: 0x8001f004
vfio_rtl8168_quirk_read 0000:04:00.0 [data]: 0x0
vfio_rtl8168_quirk_write 0000:04:00.0 [address]: 0x1f008
vfio_rtl8168_quirk_read 0000:04:00.0 [address]: 0x8001f008
vfio_rtl8168_quirk_read 0000:04:00.0 [data]: 0x49b1
vfio_rtl8168_quirk_write 0000:04:00.0 [address]: 0x1f00c
vfio_rtl8168_quirk_read 0000:04:00.0 [address]: 0x8001f00c
vfio_rtl8168_quirk_read 0000:04:00.0 [data]: 0x0
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
sPAPR Patch Queue: 2015-09-23
Highlights:
* pseries-2.5 machine type
* Memory hotplug for "pseries" guests
* Fixes to the PAPR Dynamic Reconfiguration hotplug code
* Several PAPR compliance fixes
* New SLOF with:
* GPT support
* Much faster VGA handling
# gpg: Signature made Wed 23 Sep 2015 02:50:10 BST using DSA key ID FDDA6FC6
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: F730 2185 38B4 D13E FD80 34F2 6882 CAC6 FDDA 6FC6
* remotes/dgibson/tags/spapr-next-20150923: (36 commits)
sPAPR: Enable EEH on VFIO PCI device only
sPAPR: Revert don't enable EEH on emulated PCI devices
ppc/spapr: Implement H_RANDOM hypercall in QEMU
ppc/spapr: Fix buffer overflow in spapr_populate_drconf_memory()
spapr: Fix default NUMA node allocation for threads
spapr: Move memory hotplug to RTAS_LOG_V6_HP_ID_DRC_COUNT type
spapr: Support hotplug by specifying DRC count
spapr: Revert to memory@XXXX representation for non-hotplugged memory
spapr: Populate ibm,associativity-lookup-arrays correctly for non-NUMA
spapr: Provide better error message when slots exceed max allowed
spapr: Don't allow memory hotplug to memory less nodes
spapr: Memory hotplug support
spapr: Make hash table size a factor of maxram_size
spapr: Support ibm,dynamic-reconfiguration-memory
spapr: Add LMB DR connectors
spapr: Use QEMU limit for maximum CPUs number
spapr: Don't use QOM [*] syntax for DR connectors.
spapr_drc: use RTAS return codes for methods called by RTAS
spapr: Initialize hotplug memory address space
spapr_drc: don't allow 'empty' DRCs to be unisolated or allocated
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This checks if the PCI device retrieved from the PCI device address
is VFIO PCI device when enabling EEH functionality. If it's not
VFIO PCI device, the EEH functonality isn't enabled.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This reverts commit 7cb18007 ("sPAPR: Don't enable EEH on emulated
PCI devices") as rtas_ibm_set_eeh_option() isn't the right place
to check if there has the corresponding PCI device for the input
address, which can be PE address, not PCI device address.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The PAPR interface defines a hypercall to pass high-quality
hardware generated random numbers to guests. Recent kernels can
already provide this hypercall to the guest if the right hardware
random number generator is available. But in case the user wants
to use another source like EGD, or QEMU is running with an older
kernel, we should also have this call in QEMU, so that guests that
do not support virtio-rng yet can get good random numbers, too.
This patch now adds a new pseudo-device to QEMU that either
directly provides this hypercall to the guest or is able to
enable the in-kernel hypercall if available. The in-kernel
hypercall can be enabled with the use-kvm property, e.g.:
qemu-system-ppc64 -device spapr-rng,use-kvm=true
For handling the hypercall in QEMU instead, a "RngBackend" is
required since the hypercall should provide "good" random data
instead of pseudo-random (like from a "simple" library function
like rand() or g_random_int()). Since there are multiple RngBackends
available, the user must select an appropriate back-end via the
"rng" property of the device, e.g.:
qemu-system-ppc64 -object rng-random,filename=/dev/hwrng,id=gid0 \
-device spapr-rng,rng=gid0 ...
See http://wiki.qemu-project.org/Features-Done/VirtIORNG for
other example of specifying RngBackends.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The buffer that is allocated in spapr_populate_drconf_memory()
is used for setting both, the "ibm,dynamic-memory" and the
"ibm,associativity-lookup-arrays" property. However, only the
size of the first one is taken into account when allocating the
memory. So if the length of the second property is larger than
the length of the first one, we run into a buffer overflow here!
Fix it by taking the length of the second property into account,
too.
Fixes: "spapr: Support ibm,dynamic-reconfiguration-memory" patch
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
At present, if guest numa nodes are requested, but the cpus in each node
are not specified, spapr just uses the default behaviour or assigning each
vcpu round-robin to nodes.
If smp_threads != 1, that will assign adjacent threads in a core to
different NUMA nodes. As well as being just weird, that's a configuration
that can't be represented in the device tree we give to the guest, which
means the guest and qemu end up with different ideas of the NUMA topology.
This patch implements mc->cpu_index_to_socket_id in the spapr code to
make sure vcpus get assigned to nodes only at the socket granularity.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Till now memory hotplug used RTAS_LOG_V6_HP_ID_DRC_INDEX hotplug type
which meant that we generated one hotplug type of EPOW event for every
256MB (SPAPR_MEMORY_BLOCK_SIZE). This quickly overruns the kernel
rtas log buffer thus resulting in loss of memory hotplug events. Switch
to RTAS_LOG_V6_HP_ID_DRC_COUNT hotplug type for memory so that we
generate only one event per hotplug request.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Support hotplug identifier type RTAS_LOG_V6_HP_ID_DRC_COUNT that allows
hotplugging of DRCs by specifying the DRC count.
While we are here, rename
spapr_hotplug_req_add_event() to spapr_hotplug_req_add_by_index()
spapr_hotplug_req_remove_event() to spapr_hotplug_req_remove_by_index()
so that they match with spapr_hotplug_req_add_by_count().
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Don't represent non-hotluggable memory under drconf node. With this
we don't have to create DRC objects for them.
The effect of this patch is that we revert back to memory@XXXX representation
for all the memory specified with -m option and represent the cold
plugged memory and hot-pluggable memory under
ibm,dynamic-reconfiguration-memory.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
When NUMA isn't configured explicitly, assume node 0 is present for
the purpose of creating ibm,associativity-lookup-arrays property
under ibm,dynamic-reconfiguration-memory DT node. This ensures that
the associativity index property is correctly updated in ibm,dynamic-memory
for the LMB that is hotplugged.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Currently when user specifies more slots than allowed max of
SPAPR_MAX_RAM_SLOTS (32), we error out like this:
qemu-system-ppc64: unsupported amount of memory slots: 64
Let the user know about the max allowed slots like this:
qemu-system-ppc64: Specified number of memory slots 64 exceeds max supported 32
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Currently PowerPC kernel doesn't allow hot-adding memory to memory-less
node, but instead will silently add the memory to the first node that has
some memory. This causes two unexpected behaviours for the user.
- Memory gets hotplugged to a different node than what the user specified.
- Since pc-dimm subsystem in QEMU still thinks that memory belongs to
memory-less node, a reboot will set things accordingly and the previously
hotplugged memory now ends in the right node. This appears as if some
memory moved from one node to another.
So until kernel starts supporting memory hotplug to memory-less
nodes, just prevent such attempts upfront in QEMU.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The hash table size is dependent on ram_size, but since with hotplug
the memory can grow till maxram_size. Hence make hash table size dependent
on maxram_size.
This allows to hotplug huge amounts of memory to the guest.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Parse ibm,architecture.vec table obtained from the guest and enable
memory node configuration via ibm,dynamic-reconfiguration-memory if guest
supports it. This is in preparation to support memory hotplug for
sPAPR guests.
This changes the way memory node configuration is done. Currently all
memory nodes are built upfront. But after this patch, only memory@0 node
for RMA is built upfront. Guest kernel boots with just that and rest of
the memory nodes (via memory@XXX or ibm,dynamic-reconfiguration-memory)
are built when guest does ibm,client-architecture-support call.
Note: This patch needs a SLOF enhancement which is already part of
SLOF binary in QEMU.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Enable memory hotplug for pseries 2.4 and add LMB DR connectors.
With memory hotplug, enforce RAM size, NUMA node memory size and maxmem
to be a multiple of SPAPR_MEMORY_BLOCK_SIZE (256M) since that's the
granularity in which LMBs are represented and hot-added.
LMB DR connectors will be used by the memory hotplug code.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
[spapr_drc_reset implementation]
[since this missed the 2.4 cutoff, changing to only enable for 2.5]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
sPAPR uses hard coded limit of maximum 255 supported CPUs which is
exactly the same as QEMU-wide limit which is MAX_CPUMASK_BITS and also
defined as 255.
This makes use of a global CPU number limit for the "pseries" machine.
In order to anticipate future increase of the MAX_CPUMASK_BITS
(or to help debugging large systems), this also bumps the FDT_MAX_SIZE
limit from 256K to 1M assuming that 1 CPU core needs roughly 512 bytes
in the device tree so the new limit can cover up to 2048 CPU cores.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The dynamic reconfiguration (hotplug) code for the pseries machine type
uses a "DR connector" QOM object for each resource it will be possible
to hotplug. Each of these is added to its owner using
object_property_add_child(owner, "dr-connector[*], ...);
That works ok, mostly, but it means that the property indices are
arbitrary, depending on the order in which the connectors are constructed.
That might line up to something useful, but it doesn't have to.
It will get worse once we add hotplug RAM support. That will add a DR
connector object for every 256MB of potential memory. So if maxmem=2T,
for example, there are 8192 objects under the same parent.
The QOM interfaces aren't really designed for this. In particular
object_property_add() with [*] has O(n^2) time complexity (in the number of
existing children): first it has a linear search through array indices to
find a free slot, each of which is attempted to a recursive call to
object_property_add() with a specific [N]. Those calls are O(n) because
there's a linear search through all properties to check for duplicates.
By using a meaningful index value, which we already know is unique we can
avoid the [*] special behaviour. That lets us reduce the total time for
creating the DR objects from O(n^3) to O(n^2).
O(n^2) is still kind of crappy, but it's enough to reduce the startup time
of qemu (with in-progress memory hotplug support) with maxmem=2T from ~20
minutes to ~4 seconds.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Cc: Bharata B Rao <bharata@linux.vnet.ibm.com>
Tested-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Certain methods in sPAPRDRConnector objects are only ever called by
RTAS and in many cases are responsible for the logic that determines
the RTAS return codes.
Rather than having a level of indirection requiring RTAS code to
re-interpret return values from such methods to determine the
appropriate return code, just pass them through directly.
This requires changing method return types to uint32_t to match the
type of values currently passed to RTAS helpers.
In the case of read accesses like drc->entity_sense() where we weren't
previously reporting any errors, just the read value, we modify the
function to return RTAS return code, and pass the read value back via
reference.
Suggested-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Suggested-by: David Gibson <david@gibson.dropbear.id.au>
Cc: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Initialize a hotplug memory region under which all the hotplugged
memory is accommodated. Also enable memory hotplug by setting
CONFIG_MEM_HOTPLUG.
Modelled on i386 memory hotplug.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Logical resources start with allocation-state:UNUSABLE /
isolation-state:ISOLATED. During hotplug, guests will transition
them to allocation-state:USABLE, and then to
isolation-state:UNISOLATED.
For cases where we cannot transition to allocation-state:USABLE,
in this case due to no device/resource being association with
the logical DRC, we should return an error -3.
For physical DRCs, we default to allocation-state:USABLE and stay
there, so in this case we should report an error -3 when the guest
attempts to make the isolation-state:ISOLATED transition for a DRC
with no device associated.
These are as documented in PAPR 2.7, 13.5.3.4.
We also ensure allocation-state:USABLE when the guest attempts
transition to isolation-state:UNISOLATED to deal with misbehaving
guests attempting to bring online an unallocated logical resource.
This is as documented in PAPR 2.7, 13.7.
Currently we implement no such error logic. Fix this by handling
these error cases as PAPR defines.
Cc: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
PAPR requires ibm,req#msi and ibm,req#msi-x to be present in the
device node to define the number of msi/msi-x interrupts the device
supports, respectively.
Currently we have ibm,req#msi-x hardcoded to a non-sensical constant
that happens to be 2, and are missing ibm,req#msi entirely. The result
of that is that msi-x capable devices get limited to 2 msi-x
interrupts (which can impact performance), and msi-only devices likely
wouldn't work at all. Additionally, if devices expect a minimum that
exceeds 2, the guest driver may fail to load entirely.
SLOF still owns the generation of these properties at boot-time
(although other device properties have since been offloaded to QEMU),
but for hotplugged devices we rely on the values generated by QEMU
and thus hit the limitations above.
Fix this by generating these properties in QEMU as expected by guests.
In the future it may make sense to modify SLOF to pass through these
values directly as we do with other props since we're duplicating SLOF
code.
Cc: qemu-ppc@nongnu.org
Cc: qemu-stable@nongnu.org
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
For setting debug watchpoints, sPAPR guests use H_SET_MODE hypercall.
The existing QEMU H_SET_MODE handler does not support this but
the KVM handler in HV KVM does. However it is not enabled.
This enables the in-kernel H_SET_MODE handler which handles:
- Completed Instruction Address Breakpoint Register
- Watch point 0 registers.
The rest is still handled in QEMU.
Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The device tree presented to pseries machine type guests includes an
ibm,chip-id property which gives essentially the socket number of each
vcpu core (individual vcpu threads don't get a node in the device
tree).
To calculate this, it uses a vcpus_per_socket variable computed as
(smp_cpus / #sockets). This is correct for the usual case where
smp_cpus == smp_threads * smp_cores * #sockets.
However, you can start QEMU with the number of cores and threads
mismatching the total number of vcpus (whether that _should_ be
permitted is a topic for another day). It's a bit hard to say what
the "real" number of vcpus per socket here is, but for most purposes
(smp_threads * smp_cores) will more meaningfully match how QEMU
behaves with respect to socket boundaries.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
The changes are:
1. GPT support;
2. Much faster VGA support.
The full changelog is:
> Add missing half word access case to _FASTRMOVE and _FASTMOVE
> Remove unused RMOVE64 stub
> fbuffer: Implement RFILL as an accelerated primitive
> fbuffer: Implement MRMOVE as an accelerated primitive
> fbuffer: Precalculate line length in bytes
> terminal: Disable the terminal-write trace by default
> boot: remove trailing ":" in the bootpath
> ci: implement boot client interface
> boot: bootpath should be complete device path
> fbuffer: Use a smaller cursor
> fbuffer: Improve invert-region helper
> usb-hid: Caps is not always shift
> cas: Increase FDT buffer size to accomodate larger ibm, cas node properties
> README: Update with patch submittion note
> disk-label: add support for booting from GPT FAT partition
> disk-label: introduce helper to check fat filesystem
> introduce 8-byte LE helpers
> disk-label: simplify gpt-prep-partition? routine
> fbuffer: introduce the invert-region-x helper
> fbuffer: introduce the invert-region helper
> fbuffer: simplify address computations in fb8-toggle-cursor
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
When a device is hotplugged, attach() sets "configured" to
false, waiting an action from the OS to configure it and then
to call ibm,configure-connector. On ibm,configure-connector,
the hypervisor sets "configured" to true.
In case of coldplugged device, attach() sets "configured" to
false, but firmware and OS never call the ibm,configure-connector
in this case, so it remains set to false.
It could be harmless, but when we unplug a device, hypervisor
waits the device becomes configured because for it, a not configured
device is a device being configured, so it waits the end of configuration
to unplug it... and it never happens, so it is never unplugged.
This patch set by default coldplugged device to "configured=true",
hotplugged device to "configured=false".
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
If drmgr is used in the guest to hotplug a device before a device_add
has been issued via the QEMU monitor, QEMU segfaults in configure_connector
call. This occurs due to accessing of NULL FDT which otherwise would have
been created and associated with the DRC during device_add command.
Check for NULL FDT and return failure from configure_connector call.
As per PAPR+, an error value of -9003 seems appropriate for this failure.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
To see the output of the hcall_dprintf statements, you currently have
to enable the DEBUG_SPAPR_HCALLS macro in include/hw/ppc/spapr.h.
This is ugly because a) not every user who wants to debug guest
problems can or wants to recompile QEMU to be able to see such issues,
and b) since this macro is disabled by default, the code in the
hcall_dprintf() brackets tends to bitrot until somebody temporarily
enables that macro again.
Since the hcall_dprintf statements except one indicate guest
problems, let's always use qemu_log_mask(LOG_GUEST_ERROR, ...) for
this macro instead. One spot indicated an unimplemented host feature,
so this is changed into qemu_log_mask(LOG_UNIMP, ...) instead. Now
it's possible to see all those messages by simply adding the CLI
parameter "-d guest_errors,unimp", without the need to re-compile
the binary.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The DRC_INDEX_ID_MASK macro does a left shift on ~0, which is a signed
quantity, and therefore undefined behaviour according to the C spec. In
particular this causes warnings from the clang sanitizer.
This fixes it by calculating the same mask without using ~0 (I think the
new method is a more common idiom for generating masks anyway). For good
measure I also use 1ULL to force the expression's type to unsigned long
long, which should be good for assigning to anything we're going to want
to.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
dumpdtb (-machine dumpdtb=<file>) allows one to inspect the generated
device tree of machine types that generate device trees. This is
useful for a) seeing what's there b) debugging/testing device tree
generator patches. It can be used as follows
$QEMU_CMDLINE -machine dumpdtb=dtb
dtc -I dtb -O dts dtb
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Improve the SPLPAR Characteristics information:
Add MaxPlatProcs: set to max_cpus, the maximum CPUs that could be
addded to the system.
Add DesMem: set to the initial memory of the system.
Add DesProcs: set to smp_cpus, the inital number of CPUs in the
system.
These tokens and values are specified by PAPR.
Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Currently, rtas_ibm_change_msi() always returns four values even if
less are specified.
Correct this by only returning the fourth parameter if it was
requested.
This is specified by PAPR.
Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
QEMU is MSI-X capable and makes it available via ibm,change-msi, so
we should indicate this by adding /rtas/ibm,change-msix-capable to the
device tree.
This is specificed by PAPR.
Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
QEMU has a notion of the guest name, so if it's present we might as
well put that into the device tree as /ibm,partition-name.
This is specificed by PAPR.
Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Include an error message when migration fails due to mismatch in
htab_shift values at source and target. This should provide a bit more
verbose message in addition to the current migration failure message
that reads like:
qemu-system-ppc64: error while loading state for instance 0x0 of device 'spapr/htab'
After this patch, the failure message will look like this:
qemu-system-ppc64: htab_shift mismatch: source 29 target 24
qemu-system-ppc64: error while loading state for instance 0x0 of device 'spapr/htab'
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Currently device_del requires that the client provide the
device short ID. device_add allows devices to be created
without giving an ID, at which point there is no way to
delete them with device_del. The QOM object path, however,
provides an alternative way to identify the devices.
Allowing device_del to accept an object path ensures all
devices are deletable regardless of whether they have an
ID.
(qemu) device_add usb-mouse
(qemu) qom-list /machine/peripheral-anon
device[0] (child<usb-mouse>)
type (string)
(qemu) device_del /machine/peripheral-anon/device[0]
Devices are required to be marked as hotpluggable
otherwise an error is raised
(qemu) device_del /machine/unattached/device[4]
Device 'PIIX3' does not support hotplugging
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1441974836-17476-1-git-send-email-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[Commit message touched up, accidental white-space change dropped]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
qapi: QMP introspection
# gpg: Signature made Mon 21 Sep 2015 08:59:17 BST using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
* remotes/armbru/tags/pull-qapi-2015-09-21: (26 commits)
qapi-introspect: Hide type names
qapi: New QMP command query-qmp-schema for QMP introspection
qapi: Pseudo-type '**' is now unused, drop it
qapi-schema: Fix up misleading specification of netdev_add
qom: Don't use 'gen': false for qom-get, qom-set, object-add
qapi: Introduce a first class 'any' type
qapi: Make output visitor return qnull() instead of NULL
qapi: Improve built-in type documentation
qapi-commands: De-duplicate output marshaling functions
qapi: De-duplicate parameter list generation
qapi: Rename qmp_marshal_input_FOO() to qmp_marshal_FOO()
qapi-commands: Rearrange code
qapi-visit: Rearrange code a bit
qapi: Clean up after recent conversions to QAPISchemaVisitor
qapi: Replace dirty is_c_ptr() by method c_null()
qapi-event: Convert to QAPISchemaVisitor, fixing data with base
qapi-event: Eliminate global variable event_enum_value
qapi: De-duplicate enum code generation
qapi-commands: Convert to QAPISchemaVisitor
qapi-visit: Convert to QAPISchemaVisitor, fixing bugs
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
TCG MIPS queue
- Fixes for 64-bit guests
- Small cleanups
# gpg: Signature made Sun 20 Sep 2015 23:33:15 BST using RSA key ID 1DDD8C9B
# gpg: Good signature from "Aurelien Jarno <aurelien@aurel32.net>"
# gpg: aka "Aurelien Jarno <aurelien@jarno.fr>"
# gpg: aka "Aurelien Jarno <aurel32@debian.org>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 7746 2642 A9EF 94FD 0F77 196D BA9C 7806 1DDD 8C9B
* remotes/aurel/tags/pull-tcg-mips-20150921:
tcg/mips: pass oi to tcg_out_tlb_load
tcg/mips: move tcg_out_addsub2
tcg/mips: Fix clobbering of qemu_ld inputs
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Patch queue for ppc - 2015-09-20
Highlights this time around:
- e500: Fix u-boot boot with -M virt by updating to new version
- e500: fix ATMU reads
- book3s: Fixes (unaligned exceptions, vector instructions)
- yet another dbdma ide fix
I'm out taking care of my son for the next 2 months. During that time
please consider David Gibson the interim ppc queue maintainer. I'm sure
Aurelien will be more than happy to help him review patches as well ;-).
# gpg: Signature made Sun 20 Sep 2015 21:51:16 BST using RSA key ID 03FEDC60
# gpg: Good signature from "Alexander Graf <agraf@suse.de>"
# gpg: aka "Alexander Graf <alex@csgraf.de>"
* remotes/agraf/tags/signed-ppc-for-upstream:
target-ppc: fix xscmpodp and xscmpudp decoding
target-ppc: fix vcipher, vcipherlast, vncipherlast and vpermxor
PPC: E500: Update u-boot to commit 79c884d7e4
target-ppc: Fix SRR0 when taking unaligned exceptions
PPC: e500 pci host: Fix ATMUs register reads
mac_dbdma: always clear FLUSH bit once DBDMA channel flush is complete
kvm_ppc: remove kvmppc_timer_hack
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
To eliminate the temptation for clients to look up types by name
(which are not ABI), replace all type names by meaningless strings.
Reduces output of query-schema by 13 out of 85KiB.
As a debugging aid, provide option -u to suppress the hiding.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1442401589-24189-27-git-send-email-armbru@redhat.com>
qapi/introspect.json defines the introspection schema. It's designed
for QMP introspection, but should do for similar uses, such as QGA.
The introspection schema does not reflect all the rules and
restrictions that apply to QAPI schemata. A valid QAPI schema has an
introspection value conforming to the introspection schema, but the
converse is not true.
Introspection lowers away a number of schema details, and makes
implicit things explicit:
* The built-in types are declared with their JSON type.
All integer types are mapped to 'int', because how many bits we use
internally is an implementation detail. It could be pressed into
external interface service as very approximate range information,
but that's a bad idea. If we need range information, we better do
it properly.
* Implicit type definitions are made explicit, and given
auto-generated names:
- Array types, named by appending "List" to the name of their
element type, like in generated C.
- The enumeration types implicitly defined by simple union types,
named by appending "Kind" to the name of their simple union type,
like in generated C.
- Types that don't occur in generated C. Their names start with ':'
so they don't clash with the user's names.
* All type references are by name.
* The struct and union types are generalized into an object type.
* Base types are flattened.
* Commands take a single argument and return a single result.
Dictionary argument or list result is an implicit type definition.
The empty object type is used when a command takes no arguments or
produces no results.
The argument is always of object type, but the introspection schema
doesn't reflect that.
The 'gen': false directive is omitted as implementation detail.
The 'success-response' directive is omitted as well for now, even
though it's not an implementation detail, because it's not used by
QMP.
* Events carry a single data value.
Implicit type definition and empty object type use, just like for
commands.
The value is of object type, but the introspection schema doesn't
reflect that.
* Types not used by commands or events are omitted.
Indirect use counts as use.
* Optional members have a default, which can only be null right now
Instead of a mandatory "optional" flag, we have an optional default.
No default means mandatory, default null means optional without
default value. Non-null is available for optional with default
(possible future extension).
* Clients should *not* look up types by name, because type names are
not ABI. Look up the command or event you're interested in, then
follow the references.
TODO Should we hide the type names to eliminate the temptation?
New generator scripts/qapi-introspect.py computes an introspection
value for its input, and generates a C variable holding it.
It can generate awfully long lines. Marked TODO.
A new test-qmp-input-visitor test case feeds its result for both
tests/qapi-schema/qapi-schema-test.json and qapi-schema.json to a
QmpInputVisitor to verify it actually conforms to the schema.
New QMP command query-qmp-schema takes its return value from that
variable. Its reply is some 85KiBytes for me right now.
If this turns out to be too much, we have a couple of options:
* We can use shorter names in the JSON. Not the QMP style.
* Optionally return the sub-schema for commands and events given as
arguments.
Right now qmp_query_schema() sends the string literal computed by
qmp-introspect.py. To compute sub-schema at run time, we'd have to
duplicate parts of qapi-introspect.py in C. Unattractive.
* Let clients cache the output of query-qmp-schema.
It changes only on QEMU upgrades, i.e. rarely. Provide a command
query-qmp-schema-hash. Clients can have a cache indexed by hash,
and re-query the schema only when they don't have it cached. Even
simpler: put the hash in the QMP greeting.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
It doesn't take a 'props' argument, let alone one in the format
"NAME=VALUE,..."
The bogus arguments specification doesn't matter due to 'gen': false.
Clean it up to be incomplete rather than wrong, and document the
incompleteness.
While there, improve netdev_add usage example in the manual: add a
device option to show how it's done.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1442401589-24189-24-git-send-email-armbru@redhat.com>
It's first class, because unlike '**', it actually works, i.e. doesn't
require 'gen': false.
'**' will go away next.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Before commit 1d10b44, it crashed. Since then, it returns NULL, with
a FIXME comment. The FIXME is valid: code that assumes QObject *
can't be null exists. I'm not aware of a way to feed this problematic
return value to code that actually chokes on null in the current code,
but the next few commits will create one, failing "make check".
Commit 481b002 solved a very similar problem by introducing a special
null QObject. Using this special null QObject is clearly the right
way to resolve this FIXME, so do that, and update the test
accordingly.
However, the patch isn't quite right: it messes up the reference
counting. After about SIZE_MAX visits, the reference counter
overflows, failing the assertion in qnull_destroy_obj(). Because
that's many orders of magnitude more visits of nulls than we expect,
we take this patch despite its flaws, to get the QMP introspection
stuff in without further delay. We'll want to fix it for real before
the release.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1442401589-24189-21-git-send-email-armbru@redhat.com>
gen_marshal_output() uses its parameter name only for name of the
generated function. Name it after the type being marshaled instead of
its caller, and drop duplicates.
Saves 7 copies of qmp_marshal_output_int() in qemu-ga, and one copy of
qmp_marshal_output_str() in qemu-system-*.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1442401589-24189-19-git-send-email-armbru@redhat.com>
Rename gen_marshal_input() to gen_marshal(), because the generated
function marshals both arguments and results.
Rename gen_visitor_input_containers_decl() to gen_marshal_vars(), and
move the other variable declarations there, too.
Rename gen_visitor_input_block() to gen_marshal_input_visit(), and
rearrange its code slightly.
Rename gen_marshal_input_decl() to gen_marshal_proto(), because the
result isn't a full declaration, unlike gen_command_decl()'s.
New gen_marshal_decl() actually returns a full declaration.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1442401589-24189-16-git-send-email-armbru@redhat.com>
Generate just 'FOO' instead of 'struct FOO' when possible.
Drop helper functions that are now unused.
Make pep8 and pylint reasonably happy.
Rename generate_FOO() functions to gen_FOO() for consistency.
Use more consistent and sensible variable names.
Consistently use c_ for mapping keys when their value is a C
identifier or type.
Simplify gen_enum() and gen_visit_union()
Consistently use single quotes for C text string literals.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1442401589-24189-14-git-send-email-armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
is_c_ptr() looks whether the end of the C text for the type looks like
a pointer. Works, but is fragile.
We now have a better tool: use QAPISchemaType method c_null(). The
initializers for non-pointers become prettier: 0, false or the
enumeration constant with the value 0 instead of {0}.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1442401589-24189-13-git-send-email-armbru@redhat.com>
Fixes events whose data is struct with base to include the struct's
base members. Test case is qapi-schema-test.json's event
__org.qemu_x-command:
{ 'event': '__ORG.QEMU_X-EVENT', 'data': '__org.qemu_x-Struct' }
{ 'struct': '__org.qemu_x-Struct', 'base': '__org.qemu_x-Base',
'data': { '__org.qemu_x-member2': 'str' } }
{ 'struct': '__org.qemu_x-Base',
'data': { '__org.qemu_x-member1': '__org.qemu_x-Enum' } }
Patch's effect on generated qapi_event_send___org_qemu_x_event():
-void qapi_event_send___org_qemu_x_event(const char *__org_qemu_x_member2,
+void qapi_event_send___org_qemu_x_event(__org_qemu_x_Enum __org_qemu_x_member1,
+ const char *__org_qemu_x_member2,
Error **errp)
{
QDict *qmp;
@@ -224,6 +225,10 @@ void qapi_event_send___org_qemu_x_event(
goto clean;
}
+ visit_type___org_qemu_x_Enum(v, &__org_qemu_x_member1, "__org.qemu_x-member1", &local_err);
+ if (local_err) {
+ goto clean;
+ }
visit_type_str(v, (char **)&__org_qemu_x_member2, "__org.qemu_x-member2", &local_err);
if (local_err) {
goto clean;
Code is generated in a different order now, but that doesn't matter.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Duplicated in commit 21cd70d. Yes, we can't import qapi-types, but
that's no excuse. Move the helpers from qapi-types.py to qapi.py, and
replace the duplicates in qapi-event.py.
The generated event enumeration type's lookup table becomes
const-correct (see commit 2e4450f), and uses explicit indexes instead
of relying on order (see commit 912ae9c).
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1442401589-24189-10-git-send-email-armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Fixes flat unions to visit the base's base members (the previous
commit merely added them to the struct). Same test case.
Patch's effect on visit_type_UserDefFlatUnion():
static void visit_type_UserDefFlatUnion_fields(Visitor *m, UserDefFlatUnion **obj, Error **errp)
{
Error *err = NULL;
+ visit_type_int(m, &(*obj)->integer, "integer", &err);
+ if (err) {
+ goto out;
+ }
visit_type_str(m, &(*obj)->string, "string", &err);
if (err) {
goto out;
Test cases updated for the bug fix.
Fixes alternates to generate a visitor for their implicit enumeration
type. None of them are currently used, obviously. Example:
block-core.json's BlockdevRef now generates
visit_type_BlockdevRefKind().
Code is generated in a different order now, and therefore has got a
few new forward declarations. Doesn't matter.
The guard QAPI_VISIT_BUILTIN_VISITOR_DECL is renamed to
QAPI_VISIT_BUILTIN.
The previous commit's two ugly special cases exist here, too. Mark
both TODO.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Fixes flat unions to get the base's base members. Test case is from
commit 2fc0043, in qapi-schema-test.json:
{ 'union': 'UserDefFlatUnion',
'base': 'UserDefUnionBase',
'discriminator': 'enum1',
'data': { 'value1' : 'UserDefA',
'value2' : 'UserDefB',
'value3' : 'UserDefB' } }
{ 'struct': 'UserDefUnionBase',
'base': 'UserDefZero',
'data': { 'string': 'str', 'enum1': 'EnumOne' } }
{ 'struct': 'UserDefZero',
'data': { 'integer': 'int' } }
Patch's effect on UserDefFlatUnion:
struct UserDefFlatUnion {
/* Members inherited from UserDefUnionBase: */
+ int64_t integer;
char *string;
EnumOne enum1;
/* Own members: */
union { /* union tag is @enum1 */
void *data;
UserDefA *value1;
UserDefB *value2;
UserDefB *value3;
};
};
Flat union visitors remain broken. They'll be fixed next.
Code is generated in a different order now, but that doesn't matter.
The two guards QAPI_TYPES_BUILTIN_STRUCT_DECL and
QAPI_TYPES_BUILTIN_CLEANUP_DECL are replaced by just
QAPI_TYPES_BUILTIN.
Two ugly special cases for simple unions now stand out like sore
thumbs:
1. The type tag is named 'type' everywhere, except in generated C,
where it's 'kind'.
2. QAPISchema lowers simple unions to semantically equivalent flat
unions. However, the C generated for a simple unions differs from
the C generated for its equivalent flat union, and we therefore
need special code to preserve that pointless difference for now.
Mark both TODO.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Commit "555e72f spice: rework mirror allocation, add no-resize fast path"
adds a fast path for surface switches which does't go through the full
primary surface destroy and re-recreation in case the new surface is
identical to the old one (page-flip). It checks the size only though,
but the format must be identical too. This patch adds the format check.
Commit "0002a51 ui/spice: Support shared surface for most pixman
formats" increases the chance to actually trigger this.
https://bugzilla.redhat.com/show_bug.cgi?id=1247479
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The old code prints the result of parsing (list of expression
dictionaries), and partial results of semantic analysis (list of enum
dictionaries, list of struct dictionaries).
The new code prints a trace of a schema visit, i.e. what the back-ends
are going to use. Built-in and array types are omitted, because
they're boring.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The QAPI code generators work with a syntax tree (nested dictionaries)
plus a few symbol tables (also dictionaries) on the side.
They have clearly outgrown these simple data structures. There's lots
of rummaging around in dictionaries, and information is recomputed on
the fly. For the work I'm going to do, I want more clearly defined
and more convenient interfaces.
Going forward, I also want less coupling between the back-ends and the
syntax tree, to make messing with the syntax easier.
Create a bunch of classes to represent QAPI schemata.
Have the QAPISchema initializer call the parser, then walk the syntax
tree to create the new internal representation, and finally perform
semantic analysis.
Shortcut: the semantic analysis still relies on existing check_exprs()
to do the actual semantic checking. All this code needs to move into
the classes. Mark as TODO.
Simple unions are lowered to flat unions. Flat unions and structs are
represented as a more general object type.
Catching name collisions in generated code would be nice. Mark as
TODO.
We generate array types eagerly, even though most of them aren't used.
Mark as TODO.
Nothing uses the new intermediate representation just yet, thus no
change to generated files.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The xscmpodp and xscmpudp instructions only have the AX, BX bits in
there encoding, the lowest bit (usually TX) is marked as an invalid
bit. We therefore can't decode them with GEN_XX2FORM, which decodes
the two lowest bit.
Introduce a new form GEN_XX2FORM, which decodes AX and BX and mark
the lowest bit as invalid.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
For vector instructions, the helpers get pointers to the vector register
in arguments. Some operands might point to the same register, including
the operand holding the result.
When emulating instructions which access the vector elements in a
non-linear way, we need to store the result in an temporary variable.
This fixes openssl when emulating a POWER8 CPU.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
The current U-Boot binary in QEMU has a bug where it fails to support
dynamic CCSR addressing. Without this support, u-boot can not boot the
ppce500 machine anymore. This has been fixed upstream in u-boot commit
e834975b.
Update the u-boot blob we carry in QEMU to the latest u-boot upstream,
so that we can successfully run u-boot with the ppce500 machine again.
CC: qemu-stable@nongnu.org
Signed-off-by: Alexander Graf <agraf@suse.de>
Tested-by: Thomas Huth <thuth@redhat.com>
We are setting SRR0 to the instruction before the one causing the
unaligned exception. A quick testcase:
. = 0x100
.globl _start
_start:
/* Cause a 0x600 */
li 3,0x1
stwcx. 3,0,3
1: b 1b
. = 0x600
1: b 1b
Built into something we can load as a BIOS image:
gcc -mbig -c test.S
ld -EB -Ttext 0x0 -o test test.o
objcopy -O binary test test.bin
Run with:
qemu-system-ppc64 -nographic -bios test.bin
Shows an incorrect SRR0 (points at the li):
SRR0 0000000000000100
With the patch we get the correct SRR0:
SRR0 0000000000000104
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
There is a bug in the register mask when reading
the ATMUs registers. As the result some registers
cannot be read, and read is aliased to the other
registers. Fix it.
Signed-off-by: Rudolf Marek <rudolf.marek@sysgo.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
The code to flush the DBDMA channel was effectively duplicated in
dbdma_control_write(), except for the fact that the copy executed outside of a
RUN bit transition was broken by not clearing the FLUSH bit once the flush was
complete.
Newer PPC Linux kernels would timeout waiting for the FLUSH bit to clear again
after submitting a FLUSH command. Fix this by always clearing the FLUSH bit
once the channel flush is complete and removing the repeated code.
Reported-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
QEMU does have an I/O thread now, that can be interrupted at any time
because the VCPU thread runs outside the iothread mutex.
Therefore, the kvmppc_timer_hack is obsolete. Remove it.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
QOM infrastructure fixes and device conversions
* QOM API error handling fixes
* Performance improvements for device GPIO property creation
* Remaining conversion of QEMUMachine to QOM
# gpg: Signature made Sat 19 Sep 2015 15:40:44 BST using RSA key ID 3E7E013F
# gpg: Good signature from "Andreas Färber <afaerber@suse.de>"
# gpg: aka "Andreas Färber <afaerber@suse.com>"
* remotes/afaerber/tags/qom-devices-for-peter: (21 commits)
machine: Eliminate QEMUMachine and qemu_register_machine()
Revert use of DEFINE_MACHINE() for registrations of multiple machines
Use DEFINE_MACHINE() to register all machines
mac_world: Break long line
machine: DEFINE_MACHINE() macro
exynos4: Declare each QEMUMachine as a separate variable
exynos4: Use MachineClass instead of exynos4_machines array
exynos4: Use EXYNOS4210_NCPUS instead of max_cpus on error message
machine: Set MachineClass::name automatically
machine: Ensure all TYPE_MACHINE subclasses have the right suffix
mac99: Use MACHINE_TYPE_NAME to encode class name
s390: Rename s390-ccw-virtio-2.4 class name to use MACHINE_TYPE_NAME
s390-virtio: Rename machine class name to use MACHINE_TYPE_NAME
pseries: Rename machine class names to use MACHINE_TYPE_NAME
arm: Rename virt machine class to use MACHINE_TYPE_NAME
vexpress: Rename machine classes to use MACHINE_TYPE_NAME
vexpress: Don't set name on abstract class
machine: MACHINE_TYPE_NAME macro
qdev: Do not use slow [*] expansion for GPIO creation
qom: Fix invalid error check in property_get_str()
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The struct is not used anymore and can be eliminated.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
The script used for converting from QEMUMachine had used one
DEFINE_MACHINE() per machine registered. In cases where multiple
machines are registered from one source file, avoid the excessive
generation of module init functions by reverting this unrolling.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Convert all machines to use DEFINE_MACHINE() instead of QEMUMachine
automatically using a script.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
[AF: Style cleanups, convert imx25_pdk machine]
Signed-off-by: Andreas Färber <afaerber@suse.de>
The macro will allow easy registration of a TYPE_MACHINE subclass, using
only the machine name and a MachineClass initialization function as
parameter.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This will make the code follow the same pattern used for other machines,
and will make it easier to automatically convert the code to be
QOM-based.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
We don't need a QEMUMachine array to query max_cpus, if we can get the
corresponding MachineClass.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
The code is checking smp_cpus against EXYNOS4210_NCPUS, not against
max_cpus, so use EXYNOS4210_NCPUS in the error message for consistency.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Now all TYPE_MACHINE subclasses use MACHINE_TYPE_NAME to generate the
class name. So instead of requiring each subclass to set
MachineClass::name manually, we can now set it automatically at the
TYPE_MACHINE class_base_init() function.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
[AF/ehabkost: Updated for s390-ccw machines]
[AF: Cleanup of intermediate virt and vexpress name handling]
Signed-off-by: Andreas Färber <afaerber@suse.de>
Now that all non-abstract TYPE_MACHINE subclasses have the -machine
suffix, add an assert to ensure this will be always true.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
It will result in exactly the same class name, but it will make the code
consistent with the other classes.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Machine class names should use the "-machine" suffix to allow
class-name-based machine class lookup to work. Rename the
s390-ccw-virtio-2.4 machine class using the MACHINE_TYPE_NAME macro.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
[AF/ehabkost: Updated for 2.5 machine]
Signed-off-by: Andreas Färber <afaerber@suse.de>
Machine class names should use the "-machine" suffix to allow
class-name-based machine class lookup to work. Rename the s390-virtio
machine class using the MACHINE_TYPE_NAME macro.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Machine class names should use the "-machine" suffix to allow
class-name-based machine class lookup to work. Rename the the pseries
machine classes using the MACHINE_TYPE_NAME macro.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Machine class names should use the "-machine" suffix to allow
class-name-based machine class lookup to work. Rename the arm virt
machine class using the MACHINE_TYPE_NAME macro.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Machine class names should use the "-machine" suffix to allow
class-name-based machine class lookup to work. Rename the vexpress
machine classes using the MACHINE_TYPE_NAME macro.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
[AF: Introduce VEXPRESS_*_MACHINE_NAME]
Signed-off-by: Andreas Färber <afaerber@suse.de>
The MachineClass::name field won't be ever be used on TYPE_VEXPRESS, as
it is an abstract class and the machine class lookup code explicitly
skips abstract classes. We can remove it to make the code simpler.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andreas Färber <afaerber@suse.de>
The macro will be useful to ensure the machine class names follow the
right format to make machine class lookup by class name work correctly.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Instead of computing mem_index and s_bits in both tcg_out_qemu_ld and
tcg_out_qemu_st function and passing them to tcg_out_tlb_load, directly
pass oi to the tcg_out_tlb_load function and compute mem_index and
s_bits there.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Somehow the tcg_out_addsub2 function ended-up in the middle of the
qemu_ld/st related functions. Move it with other arithmetics related
functions.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
The MIPS TCG backend implements qemu_ld with 64-bit targets using the v0
register (base) as a temporary to load the upper half of the QEMU TLB
comparator (see line 5 below), however this happens before the input
address is used (line 8 to mask off the low bits for the TLB
comparison, and line 12 to add the host-guest offset). If the input
address (addrl) also happens to have been placed in v0 (as in the second
column below), it gets clobbered before it is used.
addrl in t2 addrl in v0
1 srl a0,t2,0x7 srl a0,v0,0x7
2 andi a0,a0,0x1fe0 andi a0,a0,0x1fe0
3 addu a0,a0,s0 addu a0,a0,s0
4 lw at,9136(a0) lw at,9136(a0) set TCG_TMP0 (at)
5 lw v0,9140(a0) lw v0,9140(a0) set base (v0)
6 li t9,-4093 li t9,-4093
7 lw a0,9160(a0) lw a0,9160(a0) set addend (a0)
8 and t9,t9,t2 and t9,t9,v0 use addrl
9 bne at,t9,0x836d8c8 bne at,t9,0x836d838 use TCG_TMP0
10 nop nop
11 bne v0,t8,0x836d8c8 bne v0,a1,0x836d838 use base
12 addu v0,a0,t2 addu v0,a0,v0 use addrl, addend
13 lw t0,0(v0) lw t0,0(v0)
Fix by using TCG_TMP0 (at) as the temporary instead of v0 (base),
pushing the load on line 5 forward into the delay slot of the low
comparison (line 10). The early load of the addend on line 7 also needs
pushing even further for 64-bit targets, or it will clobber a0 before
we're done with it. The output for 32-bit targets is unaffected.
srl a0,v0,0x7
andi a0,a0,0x1fe0
addu a0,a0,s0
lw at,9136(a0)
-lw v0,9140(a0) load high comparator
li t9,-4093
-lw a0,9160(a0) load addend
and t9,t9,v0
bne at,t9,0x836d838
- nop
+ lw at,9140(a0) load high comparator
+lw a0,9160(a0) load addend
-bne v0,a1,0x836d838
+bne at,a1,0x836d838
addu v0,a0,v0
lw t0,0(v0)
Cc: qemu-stable@nongnu.org
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Expansion of [*] suffix is very slow because index expansion is done using
trial and error strategy, starting every time from zero and retrying with
the next index until insertion succeeds. With large number of already added
properties this process takes huge amount of time (O(n^2) complexity).
Some architectures (like ARM) use very large amount of IRQ pins in interrupt
controller models. This flaw makes machine startup extremely slow
(~20 seconds for ARM64 with 32 CPUs). This patch decreases this time down to
~10 seconds.
Also in qdev_init_gpio_out_named() memset() is now called only once for the
whole array instead of per-cell cleaning
Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
When a function returns a null pointer on error and only on error, you
can do
if (!foo(foos, errp)) {
... handle error ...
}
instead of the more cumbersome
Error *err = NULL;
if (!foo(foos, &err)) {
error_propagate(errp, err);
... handle error ...
}
A StringProperty's getter, however, may return null on success! We
then fail to call visit_type_str().
Screwed up in 6a146eb, v1.1.
Fails tests/qom-test in my current, heavily hacked QAPI branch. No
reproducer for master known (but I didn't look hard).
Cc: Anthony Liguori <anthony@codemonkey.ws>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
The argument for an Error **errp parameter must point to a null
pointer. If it doesn't, and an error happens, error_set() fails its
assertion.
Instead of
foo(foos, errp);
bar(bars, errp);
you need to do something like
Error *err = NULL;
foo(foos, &err);
if (err) {
error_propagate(errp, err);
goto out;
}
bar(bars, errp);
out:
Screwed up in commit 0e55884 (v1.3.0): property_get_bool().
Screwed up in commit 1f21772 (v2.1.0): object_property_get_enum() and
object_property_get_uint16List().
Screwed up in commit a8e3fbe (v2.4.0): property_get_enum(),
property_set_enum().
Found by inspection, no actual crashes observed.
Fix them up.
Cc: Anthony Liguori <anthony@codemonkey.ws>
Cc: Hu Tao <hutao@cn.fujitsu.com>
Cc: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
with write_fis_d2h and signature generation tidied up,
let's adjust the initial d2h semantics to make more sense.
The initial d2h is considered delivered if there is guest
memory to save it to.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1441140641-17631-5-git-send-email-jsnow@redhat.com
It's no longer used. We used to generate a D2H FIS based
upon the command FIS that prompted the update, but in reality,
the D2H FIS is generated purely from register state.
cmd_fis is vestigial, so get rid of it.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1441140641-17631-4-git-send-email-jsnow@redhat.com
The initial register device-to-host FIS no longer needs to specially
set certain fields, as these can be handled generically by setting those
fields explicitly with the signatures we want at port reset time.
(1) Signatures are decomposed into their four component registers and
set upon (AHCI) port reset.
(2) the signature cache register is no longer set manually per-each
device type, but instead just once during ahci_init_d2h.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1441140641-17631-3-git-send-email-jsnow@redhat.com
We're supposed to abort on transfers like this, unless we fill
Word 125 of our IDENTIFY data with a default transfer size, which
we don't currently do.
This is an ATA error, not a SCSI/ATAPI one.
See ATA8-ACS3 sections 7.17.6.49 or 7.21.5.
If we don't do this, QEMU will loop forever trying to transfer
zero bytes, which isn't particularly useful.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1442253685-23349-2-git-send-email-jsnow@redhat.com
We're a little too lenient with what we'll let an ATAPI drive handle.
Clamp down on the IDE command execution table to remove CD_OK permissions
from commands that are not and have never been ATAPI commands.
For ATAPI command validity, please see:
- ATA4 Section 6.5 ("PACKET Command feature set")
- ATA8/ACS Section 4.3 ("The PACKET feature set")
- ACS3 Section 4.3 ("The PACKET feature set")
ACS3 has a historical command validity table in Table B.4
("Historical Command Assignments") that can be referenced to find when
a command was introduced, deprecated, obsoleted, etc.
The only reference for ATAPI command validity is by checking that
version's PACKET feature set section.
ATAPI was introduced by T13 into ATA4, all commands retired prior to ATA4
therefore are assumed to have never been ATAPI commands.
Mandatory commands, as listed in ATA8-ACS3, are:
- DEVICE RESET
- EXECUTE DEVICE DIAGNOSTIC
- IDENTIFY DEVICE
- IDENTIFY PACKET DEVICE
- NOP
- PACKET
- READ SECTOR(S)
- SET FEATURES
Optional commands as listed in ATA8-ACS3, are:
- FLUSH CACHE
- READ LOG DMA EXT
- READ LOG EXT
- WRITE LOG DMA EXT
- WRITE LOG EXT
All other commands are illegal to send to an ATAPI device and should
be rejected by the device.
CD_OK removal justifications:
0x06 WIN_DSM Defined in ACS2. Not valid for ATAPI.
0x21 WIN_READ_ONCE Retired in ATA5. Not ATAPI in ATA4.
0x94 WIN_STANDBYNOW2 Retired in ATA4. Did not coexist with ATAPI.
0x95 WIN_IDLEIMMEDIATE2 Retired in ATA4. Did not coexist with ATAPI.
0x96 WIN_STANDBY2 Retired in ATA4. Did not coexist with ATAPI.
0x97 WIN_SETIDLE2 Retired in ATA4. Did not coexist with ATAPI.
0x98 WIN_CHECKPOWERMODE2 Retired in ATA4. Did not coexist with ATAPI.
0x99 WIN_SLEEPNOW2 Retired in ATA4. Did not coexist with ATAPI.
0xE0 WIN_STANDBYNOW1 Not part of ATAPI in ATA4, ACS or ACS3.
0xE1 WIN_IDLEIMMDIATE Not part of ATAPI in ATA4, ACS or ACS3.
0xE2 WIN_STANDBY Not part of ATAPI in ATA4, ACS or ACS3.
0xE3 WIN_SETIDLE1 Not part of ATAPI in ATA4, ACS or ACS3.
0xE4 WIN_CHECKPOWERMODE1 Not part of ATAPI in ATA4, ACS or ACS3.
0xE5 WIN_SLEEPNOW1 Not part of ATAPI in ATA4, ACS or ACS3.
0xF8 WIN_READ_NATIVE_MAX Obsoleted in ACS3. Not ATAPI in ATA4 or ACS.
This patch fixes a divide by zero fault that can be caused by sending
the WIN_READ_NATIVE_MAX command to an ATAPI drive, which causes it to
attempt to use zeroed CHS values to perform sector arithmetic.
Reported-by: Qinghao Tang <luodalongde@gmail.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1441816082-21031-1-git-send-email-jsnow@redhat.com
CC: qemu-stable@nongnu.org
Error reporting patches
# gpg: Signature made Fri 18 Sep 2015 13:42:49 BST using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
* remotes/armbru/tags/pull-error-2015-09-18:
memory: Fix bad error handling in memory_region_init_ram_ptr()
loader: Fix memory_region_init_resizeable_ram() error handling
Fix bad error handling after memory_region_init_ram()
error: New error_fatal
MAINTAINERS: Add "Error reporting" entry
error: Copy location information in error_copy()
hmp: Allow for error message hints on HMP
error: only prepend timestamp on stderr
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit ef701d7 screwed up handling of out-of-memory conditions.
Before the commit, we report the error and exit(1), in one place. The
commit lifts the error handling up the call chain some, to three
places. Fine. Except it uses &error_abort in these places, changing
the behavior from exit(1) to abort(), and thus undoing the work of
commit 3922825 "exec: Don't abort when we can't allocate guest
memory".
The previous two commits fixed one of the three places, another one
was fixed in commit 33e0eb5. This commit fixes the third one.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1441983105-26376-5-git-send-email-armbru@redhat.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Commit ef701d7 screwed up handling of out-of-memory conditions.
Before the commit, we report the error and exit(1), in one place. The
commit lifts the error handling up the call chain some, to three
places. Fine. Except it uses &error_abort in these places, changing
the behavior from exit(1) to abort(), and thus undoing the work of
commit 3922825 "exec: Don't abort when we can't allocate guest
memory".
The previous commit fixed up uses of memory_region_init_ram(). One of
them was replaced by memory_region_init_resizeable_ram() [sic!] in
commit a166614, so Coccinelle missed it. Fix it up.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1441983105-26376-4-git-send-email-armbru@redhat.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Symptom:
$ qemu-system-x86_64 -m 10000000
Unexpected error in ram_block_add() at /work/armbru/qemu/exec.c:1456:
upstream-qemu: cannot set up guest memory 'pc.ram': Cannot allocate memory
Aborted (core dumped)
Root cause: commit ef701d7 screwed up handling of out-of-memory
conditions. Before the commit, we report the error and exit(1), in
one place, ram_block_add(). The commit lifts the error handling up
the call chain some, to three places. Fine. Except it uses
&error_abort in these places, changing the behavior from exit(1) to
abort(), and thus undoing the work of commit 3922825 "exec: Don't
abort when we can't allocate guest memory".
The three places are:
* memory_region_init_ram()
Commit 4994653 (right after commit ef701d7) lifted the error
handling further, through memory_region_init_ram(), multiplying the
incorrect use of &error_abort. Later on, imitation of existing
(bad) code may have created more.
* memory_region_init_ram_ptr()
The &error_abort is still there.
* memory_region_init_rom_device()
Doesn't need fixing, because commit 33e0eb5 (soon after commit
ef701d7) lifted the error handling further, and in the process
changed it from &error_abort to passing it up the call chain.
Correct, because the callers are realize() methods.
Fix the error handling after memory_region_init_ram() with a
Coccinelle semantic patch:
@r@
expression mr, owner, name, size, err;
position p;
@@
memory_region_init_ram(mr, owner, name, size,
(
- &error_abort
+ &error_fatal
|
err@p
)
);
@script:python@
p << r.p;
@@
print "%s:%s:%s" % (p[0].file, p[0].line, p[0].column)
When the last argument is &error_abort, it gets replaced by
&error_fatal. This is the fix.
If the last argument is anything else, its position is reported. This
lets us check the fix is complete. Four positions get reported:
* ram_backend_memory_alloc()
Error is passed up the call chain, ultimately through
user_creatable_complete(). As far as I can tell, it's callers all
handle the error sanely.
* fsl_imx25_realize(), fsl_imx31_realize(), dp8393x_realize()
DeviceClass.realize() methods, errors handled sanely further up the
call chain.
We're good. Test case again behaves:
$ qemu-system-x86_64 -m 10000000
qemu-system-x86_64: cannot set up guest memory 'pc.ram': Cannot allocate memory
[Exit 1 ]
The next commits will repair the rest of commit ef701d7's damage.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1441983105-26376-3-git-send-email-armbru@redhat.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Commits 7216ae3d and d2828429 disabled some error message hints,
all because a change to use modern error reporting meant that the
hint would be output prior to the actual error. Fix this by making
hints a first-class member of Error.
For example, we are now back to the pleasant:
$ qemu-system-x86_64 --nodefaults -S --vnc :0 --chardev null,id=,
qemu-system-x86_64: --chardev null,id=,: Parameter 'id' expects an identifier
Identifiers consist of letters, digits, '-', '.', '_', starting with a letter.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1441901956-21991-1-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The -msg timestamp=on option prepends a timestamp to error messages.
This is useful on stderr where it allows users to identify when an error
was raised.
Timestamps do not make sense on the monitor since error_report() is
called in response to a synchronous monitor command and the user already
knows "when" the command was issued. Additionally, the rest of the
monitor conversation lacks timestamps so the error timestamp cannot be
correlated with other activity.
Only prepend timestamps on stderr. This fixes libvirt's 'drive_del'
processing, which did not expect a timestamp. Other QEMU monitor
clients are probably equally confused by timestamps on monitor error
messages.
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Seiji Aguchi <seiji.aguchi@hds.com>
Cc: Frank Schreuder <fschreuder@transip.nl>
Cc: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <1439212541-16997-1-git-send-email-stefanha@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Tested-by: Frank Schreuder <fschreuder@transip.nl>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
MIPS patches 2015-09-18
Changes:
* fixes for rdhwr, tlbwr, mtc0, recip.fmt, rsqrt.fmt and daui instructions
* removal of MIPS_DEBUG code
* use tcg_gen_extrh_i64_i32()
* improve random tlb index generation in cpu_mips_get_random()
* exception handling improvements to correctly restore icount
# gpg: Signature made Fri 18 Sep 2015 12:15:28 BST using RSA key ID 0B29DA6B
# gpg: Good signature from "Leon Alrae <leon.alrae@imgtec.com>"
* remotes/lalrae/tags/mips-20150918:
target-mips: improve exception handling
target-mips: correct MTC0 instruction on MIPS64
target-mips: add missing restriction in DAUI instruction
target-mips: fix corner case in TLBWR causing QEMU to hang
pic32: use LCG algorithm for generated random index of TLBWR instruction
target-mips: get rid of MIPS_DEBUG_SIGN_EXTENSIONS
target-mips: get rid of MIPS_DEBUG
target-mips: Fix RDHWR on CP0.Count
target-mips: remove wrong checks for recip.fmt and rsqrt.fmt
target-mips: Use tcg_gen_extrh_i64_i32
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch improves exception handling in MIPS.
Instructions generate several types of exceptions.
When exception is generated, it breaks the execution of the current
translation block. Implementation of the exceptions handling does not
correctly restore icount for the instruction which caused the exception.
In most cases icount will be decreased by the value equal to the size of
TB. This patch passes pointer to the translation block internals to the
exception handler. It allows correct restoring of the icount value.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
[leon.alrae@imgtec.com: avoid retranslation in linux-user SC, break lines
which are over 80 chars, remove v3 changelog from the commit message]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
MTC0 on a 64-bit processor should move entire 64-bit GPR content to CP0
register.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
rs cannot be the zero register, Reserved Instruction exception must be
signalled for this case.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
cpu_mips_get_random() function is used to generate a random index from
CP0.Wired to TLBSize-1 range. Current implementation avoids generating
the same as before value, hence the while loop. If the guest sets
CP0.Wired to TLBSize-1 (which actually does not sound to be very
practical) QEMU will get stuck in the loop infinitely as we always
generate the same index.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
The LFSR algorithm, used for generating random TLB indexes for TLBWR
instruction, was inclined to produce a degenerate sequence in some cases.
For example, for 16-entry TLB size and Wired=1, it gives: 15, 6, 7, 2,
7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2...
When replaced with LCG algorithm from ISO/IEC 9899 standard, the sequence
looks much better, with about the same computational effort needed.
Signed-off-by: Serge Vakulenko <serge.vakulenko@gmail.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
MIPS_DEBUG_SIGN_EXTENSIONS was used sometimes ago to verify that 32-bit
instructions correctly sign extend their results. It's now not need
anymore, remove it.
Cc: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
MIPS_DEBUG is a define used to dump the instruction disassembling. It
has to be defined at compile time. In practice I believe it's more
efficient to just look at the instruction disassembly and op dump using
-d in_asm,op. This patch therefore removes the corresponding code, which
clutters translate.c.
Cc: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Instructions recip.{s|d} and rsqrt.{s|d} do not require 64-bit FPU neither
they require any particular mode for its FPU. This patch removes the checks
that may break a program that uses these instructions.
Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
We can tidy gen_load_fpr32h, as well as introduce a helper
to cleanup the MACC instructions.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
IDEState's io_buffer_offset was originally added to keep track of offsets
in AHCI rather exclusively, but it was added to IDEState instead of an
AHCI-specific structure.
AHCI fakes all PIO transfers using DMA and a scatter-gather list. When
the core or atapi layers invoke HBA-specific mechanisms for transfers,
they do not always know that it is being backed by DMA or a sglist, so
this offset is not always updated by the HBA code everywhere.
If we modify it in dma_buf_commit, however, any HBA that needs to use
this offset to manage operating on only part of a sglist will have
access to it.
This will fix ATAPI PIO transfers performed through the AHCI HBA,
which were previously not modifying this value appropriately.
This will fix ATAPI PIO transfers larger than one sector.
Reported-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 1440546331-29087-2-git-send-email-jsnow@redhat.com
CC: qemu-stable@nongnu.org
Update the CRIS CPU state save/load to use a VMStateDescription struct
rather than cpu_save/cpu_load functions.
Have to define TLBSet struct.
Multidimensional arrays in C are a mess, just unroll them.
Signed-off-by: Juan Quintela <quintela@redhat.com>
[PMM:
* expand commit message a little since it's no longer one patch in
a 35-patch series
* add header/copyright comment to machine.c; credited copyright is
Red Hat and author is Juan, since this commit gives the file all-new
contents; license is LGPL-2-or-later, to match other target-cris code
* remove hardcoded tab
* add fields for locked_irq, interrupt_vector, fault_vector, trap_vector
* drop minimum_version_id_old fields
* bump version_id to 2 as we are not compatible with old state format
* remove unnecessary hw/boards.h include
* update to register via dc->vmsd]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
# gpg: Signature made Thu 17 Sep 2015 12:43:56 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/net-pull-request:
net: smc91c111: flush packets on RCR register changes
net: smc91c111: gate can_receive() on rx FIFO having a slot
net: smc91c111: guard flush_queued_packets() on can_rx()
MAINTAINERS: Stefan will not maintain net subsystem
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* Linux header update and cleanup
* Support for HyperV crash report
* Cleanup of target-specific HMP commands
* Multiarch batch
* Checkpatch fix for Perl 5.22
* NBD fix
* Revert incorrect commit 5243722376
# gpg: Signature made Wed 16 Sep 2015 16:39:01 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
* remotes/bonzini/tags/for-upstream: (24 commits)
nbd: release exp->blk after all clients are closed
checkpatch: Escape left braces in regex
monitor: uninclude cpu_ldst
include/exec: Move cputlb exec.c defs out
cputlb: Change tlb_set_dirty() arg to cpu
cputlb: move CPU_LOOP() for tlb_reset() to exec.c
translate: move real_host_page setting to -common
tcg: Move tci_tb_ptr to -common
tcg: split tcg_op_defs to -common
translate-all: Move tcg_handle_interrupt() to -common
cpu-exec: Migrate some generic fns to cpu-exec-common
qemu-char: Use g_new() & friends where that makes obvious sense
monitor: added generation of documentation for hmp-commands-info.hx
hmp-commands.hx: fix end of table info
monitor: remove target-specific code from monitor.c
hmp-commands-info: move info_cmds content out of monitor.c
i386/kvm: Hyper-v crash msrs set/get'ers and migration
kvm: Add kvm system event crash handler
cpu: Add crash_occurred flag into CPUState
target-i386: move asm-x86/hyperv.h to standard-headers
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
If the socket fd is shutdown, there may be some data which is received before
shutdown. We will read the data and do read/write in nbd_trip(). But the exp's
blk is NULL, and it will cause qemu crashed.
Reported-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Message-Id: <55F929E2.1020501@cn.fujitsu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Move the architecture agnostic function prototypes for exec.c out of
cputlb.h to exec-all.h. This allows hiding of the arch specific
cputlb.h from exec.c which should be getting close to having no
architecture specifics. Prepares support for multi-arch, which will have
a minimal cpu.h that services exec.c but not cputlb.h.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-Id: <b4fe754c58c860315e35d44430c26b1c967ce2c9.1441614289.git.crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The goal is to split the functions such that cpu-exec is CPU specific
content, while cpus-exec-common.c is generic code only. The function
interface to cpu-exec needs to be virtualised to prepare support for
multi-arch and moving these definitions out saves bloating the QOM
interface. So move these definitions out of cpu-exec to a new module,
cpu-exec-common.
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-Id: <3cefeb3fbbb33031670951a0e74de2778529da3f.1441614289.git.crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer,
for two reasons. One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.
This commit only touches allocations with size arguments of the form
sizeof(T). Same Coccinelle semantic patch as in commit b45c03f.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1442231643-23630-1-git-send-email-armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It will be easier if you need to add info-commands to edit
only hmp-commands-info.hx, before this had to edit monitor.c and
hmp-commands.hx.
From the build point of view all documentation is saved into
qemu-monitor-info.texi which from now on is used for all user
documentation building.
Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1441899541-1856-5-git-send-email-den@openvz.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM Hyper-V based guests can notify hypervisor about
occurred guest crash by writing into Hyper-V crash MSR's.
This patch does handling and migration of HV_X64_MSR_CRASH_P0-P4,
HV_X64_MSR_CRASH_CTL msrs. User can enable these MSR's by
'hv-crash' option.
Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Andreas Färber <afaerber@suse.de>
Message-Id: <1435924905-8926-13-git-send-email-den@openvz.org>
[Folks, stop abrviating variable names!!! Also fix compilation on
non-Linux/x86. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM kernel can send guest crash events into userspace.
Appropriate guest crash handler is called when kernel guest
crash event received. Guest crash event recognized by a
KVM_SYSTEM_EVENT_CRASH type of system event.
Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Andreas Färber <afaerber@suse.de>
Message-Id: <1435924905-8926-11-git-send-email-den@openvz.org>
[Rebase: add lock/unlock iothread around qemu_system_guest_panicked - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The Hyper-V definitions are an industry standard and can be used
from code that is not KVM-specific.
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
cp_virtio is called for both the asm-s390/ and linux/ directories,
so it looks for pci_regs.h and input.h files in asm-s390/ too. This
makes little sense. In the next patch we will have the opposite
problem; we want to add asm-x86/hyperv.h, and there's also a
linux/hyperv.h file with unwanted dependencies on additional Linux
uapi headers. We do not want to copy linux/hyperv.h.
The solution is to make cp_virtio (now renamed to cp_portable) copy
one file only, instead of using the "find" command, and call it multiple
times. The new function is really just a reindentation of the old one.
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The update to 4.2 was reviewed by Michael S. Tsirkin and Cornelia
Huck. The further update to 4.3-rc1 only touches KVM files.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The spec says:
Undefined – The value read from this bit is
undefined. In previous versions of this
specification, this bit was used to indicate a Link
Training Error. System software must ignore the
value read from this bit. System software is
permitted to write any value to this bit.
Do not allow injecting it.
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This reverts commit 5243722376.
The patch forgot about rcu_sync_lock and was committed by mistake.
Reported-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch fixes exception handling for other helper functions.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This patch fixes exception handling for seg_helper functions.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This patch fixes exception handling for memory helpers
and removes obsolete PC update from translate.c.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This patch fixes exception handling for div instructions
and removes obsolete PC update from translate.c.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This patch fixes exception handling for FPU instructions
and removes obsolete PC update from translate.c.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This patch introduces new versions of raise_exception functions
that receive TB return address as an argument.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Merge vnc-crypto-v9
# gpg: Signature made Tue 15 Sep 2015 15:32:38 BST using RSA key ID 15104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg: aka "Daniel P. Berrange <berrange@redhat.com>"
* remotes/berrange/tags/vnc-crypto-v9-for-upstream:
ui: convert VNC server to use QCryptoTLSSession
ui: fix return type for VNC I/O functions to be ssize_t
crypto: introduce new module for handling TLS sessions
crypto: add sanity checking of TLS x509 credentials
crypto: introduce new module for TLS x509 credentials
crypto: introduce new module for TLS anonymous credentials
crypto: introduce new base module for TLS credentials
qom: allow QOM to be linked into tools binaries
crypto: move crypto objects out of libqemuutil.la
tests: remove repetition in unit test object deps
qapi: allow override of default enum prefix naming
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Both ADDX_SPECIAL_0_OPCODE_Y1 and ADD_SPECIAL_0_OPCODE_Y1
do not appear to be "special" in any way, except that they
don't follow the normal naming convention using _RRR_.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Add main working flow feature, system call processing feature, and elf64
tilegx binary loading feature, based on Linux kernel tilegx 64-bit
implementation.
[rth: Moved all of the implementation of atomic instructions to a later patch.]
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <BLU436-SMTP938552D42808AA60634582B9660@phx.gbl>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Switch VNC server over to using the QCryptoTLSSession object
for the TLS session. This removes the direct use of gnutls
from the VNC server code. It also removes most knowledge
about TLS certificate handling from the VNC server code.
This has the nice effect that all the CONFIG_VNC_TLS
conditionals go away and the user gets an actual error
message when requesting TLS instead of it being silently
ignored.
With this change, the existing configuration options for
enabling TLS with -vnc are deprecated.
Old syntax for anon-DH credentials:
-vnc hostname:0,tls
New syntax:
-object tls-creds-anon,id=tls0,endpoint=server \
-vnc hostname:0,tls-creds=tls0
Old syntax for x509 credentials, no client certs:
-vnc hostname:0,tls,x509=/path/to/certs
New syntax:
-object tls-creds-x509,id=tls0,dir=/path/to/certs,endpoint=server,verify-peer=no \
-vnc hostname:0,tls-creds=tls0
Old syntax for x509 credentials, requiring client certs:
-vnc hostname:0,tls,x509verify=/path/to/certs
New syntax:
-object tls-creds-x509,id=tls0,dir=/path/to/certs,endpoint=server,verify-peer=yes \
-vnc hostname:0,tls-creds=tls0
This aligns VNC with the way TLS credentials are to be
configured in the future for chardev, nbd and migration
backends. It also has the benefit that the same TLS
credentials can be shared across multiple VNC server
instances, if desired.
If someone uses the deprecated syntax, it will internally
result in the creation of a 'tls-creds' object with an ID
based on the VNC server ID. This allows backwards compat
with the CLI syntax, while still deleting all the original
TLS code from the VNC server.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Various VNC server I/O functions return 'long' and then
also pass this to a method accepting 'int'. All these
should be ssize_t to match the signature of read/write
APIs and thus avoid potential for integer truncation /
wraparound.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Introduce a QCryptoTLSSession object that will encapsulate
all the code for setting up and using a client/sever TLS
session. This isolates the code which depends on the gnutls
library, avoiding #ifdefs in the rest of the codebase, as
well as facilitating any possible future port to other TLS
libraries, if desired. It makes use of the previously
defined QCryptoTLSCreds object to access credentials to
use with the session. It also includes further unit tests
to validate the correctness of the TLS session handshake
and certificate validation. This is functionally equivalent
to the current TLS session handling code embedded in the
VNC server, and will obsolete it.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If the administrator incorrectly sets up their x509 certificates,
the errors seen at runtime during connection attempts are very
obscure and difficult to diagnose. This has been a particular
problem for people using openssl to generate their certificates
instead of the gnutls certtool, because the openssl tools don't
turn on the various x509 extensions that gnutls expects to be
present by default.
This change thus adds support in the TLS credentials object to
sanity check the certificates when QEMU first loads them. This
gives the administrator immediate feedback for the majority of
common configuration mistakes, reducing the pain involved in
setting up TLS. The code is derived from equivalent code that
has been part of libvirt's TLS support and has been seen to be
valuable in assisting admins.
It is possible to disable the sanity checking, however, via
the new 'sanity-check' property on the tls-creds object type,
with a value of 'no'.
Unit tests are included in this change to verify the correctness
of the sanity checking code in all the key scenarios it is
intended to cope with. As part of the test suite, the pkix_asn1_tab.c
from gnutls is imported. This file is intentionally copied from the
(long since obsolete) gnutls 1.6.3 source tree, since that version
was still under GPLv2+, rather than the GPLv3+ of gnutls >= 2.0.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Introduce a QCryptoTLSCredsX509 class which is used to
manage x509 certificate TLS credentials. This will be
the preferred credential type offering strong security
characteristics
Example CLI configuration:
$QEMU -object tls-creds-x509,id=tls0,endpoint=server,\
dir=/path/to/creds/dir,verify-peer=yes
The 'id' value in the -object args will be used to associate the
credentials with the network services. For example, when the VNC
server is later converted it would use
$QEMU -object tls-creds-x509,id=tls0,.... \
-vnc 127.0.0.1:1,tls-creds=tls0
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Introduce a QCryptoTLSCredsAnon class which is used to
manage anonymous TLS credentials. Use of this class is
generally discouraged since it does not offer strong
security, but it is required for backwards compatibility
with the current VNC server implementation.
Simple example CLI configuration:
$QEMU -object tls-creds-anon,id=tls0,endpoint=server
Example using pre-created diffie-hellman parameters
$QEMU -object tls-creds-anon,id=tls0,endpoint=server,\
dir=/path/to/creds/dir
The 'id' value in the -object args will be used to associate the
credentials with the network services. For example, when the VNC
server is later converted it would use
$QEMU -object tls-creds-anon,id=tls0,.... \
-vnc 127.0.0.1:1,tls-creds=tls0
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Introduce a QCryptoTLSCreds class to act as the base class for
storing TLS credentials. This will be later subclassed to provide
handling of anonymous and x509 credential types. The subclasses
will be user creatable objects, so instances can be created &
deleted via 'object-add' and 'object-del' QMP commands respectively,
or via the -object command line arg.
If the credentials cannot be initialized an error will be reported
as a QMP reply, or on stderr respectively.
The idea is to make it possible to represent and manage TLS
credentials independently of the network service that is using
them. This will enable multiple services to use the same set of
credentials and minimize code duplication. A later patch will
convert the current VNC server TLS code over to use this object.
The representation of credentials will be functionally equivalent
to that currently implemented in the VNC server with one exception.
The new code has the ability to (optionally) load a pre-generated
set of diffie-hellman parameters, if the file dh-params.pem exists,
whereas the current VNC server will always generate them on startup.
This is beneficial for admins who wish to avoid the (small) time
sink of generating DH parameters at startup and/or avoid depleting
entropy.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The qom objects are currently added to common-obj-y
which is only linked into the system emulators. The
later crypto patches will depend on QOM infrastructure
and will also be used from tools binaries. Thus the QOM
objects are moved into a new qom-obj-y variable which
can be referenced when linking tools, system emulators
and tests.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Future patches will be adding more crypto related APIs which
rely on QOM infrastructure. This creates a problem, because
QOM relies on library constructors to register objects. When
you have a file in a static .a library though which is only
referenced by a constructor the linker is dumb and will drop
that file when linking to the final executable :-( The only
workaround for this is to link the .a library to the executable
using the -Wl,--whole-archive flag, but this creates its own
set of problems because QEMU is relying on lazy linking for
libqemuutil.a. Using --whole-archive majorly increases the
size of final executables as they now contain a bunch of
object code they don't actually use.
The least bad option is to thus not include the crypto objects
in libqemuutil.la, and instead define a crypto-obj-y variable
that is referenced directly by all the executables that need
this code (tools + softmmu, but not qemu-ga). We avoid pulling
entire of crypto-obj-y into the userspace emulators as that
would force them to link to gnutls too, which is not required.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This net pull request contains security fixes for qemu.git/master. The patches
should also be applied to stable trees.
The ne2000 NIC model has QEMU memory corruption issue. Both ne2000 and e1000
have an infinite loop.
Please see the patches for CVE numbers and details on the bugs.
# gpg: Signature made Tue 15 Sep 2015 13:02:21 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/net-pull-request:
net: avoid infinite loop when receiving packets(CVE-2015-5278)
net: add checks to validate ring buffer pointers(CVE-2015-5279)
e1000: Avoid infinite loop in processing transmit descriptor (CVE-2015-6815)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Ne2000 NIC uses ring buffer of NE2000_MEM_SIZE(49152)
bytes to process network packets. While receiving packets
via ne2000_receive() routine, a local 'index' variable
could exceed the ring buffer size, leading to an infinite
loop situation.
Reported-by: Qinghao Tang <luodalongde@gmail.com>
Signed-off-by: P J P <pjp@fedoraproject.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Ne2000 NIC uses ring buffer of NE2000_MEM_SIZE(49152)
bytes to process network packets. While receiving packets
via ne2000_receive() routine, a local 'index' variable
could exceed the ring buffer size, which could lead to a
memory buffer overflow. Added other checks at initialisation.
Reported-by: Qinghao Tang <luodalongde@gmail.com>
Signed-off-by: P J P <pjp@fedoraproject.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
While processing transmit descriptors, it could lead to an infinite
loop if 'bytes' was to become zero; Add a check to avoid it.
[The guest can force 'bytes' to 0 by setting the hdr_len and mss
descriptor fields to 0.
--Stefan]
Signed-off-by: P J P <pjp@fedoraproject.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-id: 1441383666-6590-1-git-send-email-stefanha@redhat.com
The QEMU code is not internationalized and assumes that it runs under
the C locale, but if we use the GTK+ UI we'll end up importing the
locale settings from the environment. This can break things, such as
the JSON generator and iotest 120 in locales that use a decimal comma.
We do however have translations for a few simple strings for the GTK+
menu items, so in order to run QEMU using the C locale, and yet have a
translated UI let's use setlocale() for LC_MESSAGES only.
Cc: qemu-stable@nongnu.org
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Kick off all grabbing logic from fullscreen mode. In the current state
it seems to create more problems than it solves. Try running qemu/gtk
fullscreen on one head of a multihead host for example ...
There probably was a reason the grab-on-fullscreen logic was added in
the first place. So please test and report any issues so we can try to
find a sane way to handle it.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
free_scale field tracks zoom-fit menu toggle state,
so we should keep them in sync ...
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Add a reason to grab calls and trace points,
so it is easier to debug grab related ui issues.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Then we don't have to pair the grab/ungrab calls with update_caption
calls any more because things happen automatically ;)
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
If a grab is already active for our window, do nothing.
If a grab is already active for another window, release it.
Cleanup some checks and ungrab calls in the code which are
not needed any more.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Most of the unit tests have identical sets of object deps.
For example all block unit tests need to depend on
$(block-obj-y) libqemuutil.a libqemustub.a
Currently each unit test repeats this list of test deps.
This list of deps will grow as future patches add more
modules to the build, so define some common variables
that can be used by all unit tests to remove the
repetition.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The camel_to_upper() method applies some heuristics to turn
a mixed case type name into an all-uppercase name. This is
used for example, to generate enum constant name prefixes.
The heuristics don't also generate a satisfactory name
though. eg
{ 'enum': 'QCryptoTLSCredsEndpoint',
'data': ['client', 'server']}
Results in Q_CRYPTOTLS_CREDS_ENDPOINT_CLIENT. This has
an undesirable _ after the initial Q and is missing an
_ between the CRYPTO & TLS strings.
Rather than try to add more and more heuristics to try
to cope with this, simply allow the QAPI schema to
specify the desired enum constant prefix explicitly.
eg
{ 'enum': 'QCryptoTLSCredsEndpoint',
'prefix': 'QCRYPTO_TLS_CREDS_ENDPOINT',
'data': ['client', 'server']}
Now gives the QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT name.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Block layer patches (v2)
# gpg: Signature made Mon 14 Sep 2015 15:56:54 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
* remotes/kevin/tags/for-upstream: (23 commits)
qcow2: Make qcow2_alloc_bytes() more explicit
vmdk: Fix next_cluster_sector for compressed write
iotests: Add test for checking large image files
qcow2: Make size_to_clusters() return uint64_t
qemu-iotests: More qcow2 reopen tests
qemu-iotests: Reopen qcow2 with lazy-refcounts change
qcow2: Support updating driver-specific options in reopen
qcow2: Make qcow2_update_options() suitable for transactions
qcow2: Fix memory leak in qcow2_update_options() error path
qcow2: Leave s unchanged on qcow2_update_options() failure
qcow2: Move rest of option handling to qcow2_update_options()
qcow2: Move qcow2_update_options() call up
qcow2: Factor out qcow2_update_options()
qcow2: Improve error message
qemu-io: Add command 'reopen'
qemu-io: Remove duplicate 'open' error message
block: Allow specifying driver-specific options to reopen
qcow2: Rename BDRVQcowState to BDRVQcow2State
block: Drop bdrv_find_whitelisted_format()
block: Drop drv parameter from bdrv_fill_options()
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* Support for jemalloc
* qemu_mutex_lock_iothread "No such process" fix
* cutils: qemu_strto* wrappers
* iohandler.c simplification
* Many other fixes and misc patches.
And some MTTCG work (with Emilio's fixes squashed):
* Signal-free TCG kick
* Removing spinlock in favor of QemuMutex
* User-mode emulation multi-threading fixes/docs
# gpg: Signature made Thu 10 Sep 2015 09:03:07 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
* remotes/bonzini/tags/for-upstream: (44 commits)
cutils: work around platform differences in strto{l,ul,ll,ull}
cpu-exec: fix lock hierarchy for user-mode emulation
exec: make mmap_lock/mmap_unlock globally available
tcg: comment on which functions have to be called with mmap_lock held
tcg: add memory barriers in page_find_alloc accesses
remove unused spinlock.
replace spinlock by QemuMutex.
cpus: remove tcg_halt_cond and tcg_cpu_thread globals
cpus: protect work list with work_mutex
scripts/dump-guest-memory.py: fix after RAMBlock change
configure: Add support for jemalloc
add macro file for coccinelle
configure: factor out adding disas configure
vhost-scsi: fix wrong vhost-scsi firmware path
checkpatch: remove tests that are not relevant outside the kernel
checkpatch: adapt some tests to QEMU
CODING_STYLE: update mixed declaration rules
qmp: Add example usage of strto*l() qemu wrapper
cutils: Add qemu_strtoull() wrapper
cutils: Add qemu_strtoll() wrapper
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In case of -EAGAIN returned by update_refcount(), we should discard the
cluster offset we were trying to allocate and request a new one, because
in theory that old offset might now be taken by a refcount block.
In practice, this was not the case due to update_refcount() generally
returning strictly monotonic increasing cluster offsets. However, this
behavior is not set in stone, and it is also not obvious when looking at
qcow2_alloc_bytes() alone, so we should not rely on it.
Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
When the VMDK is streamOptimized (or compressed), the
next_cluster_sector must not be incremented by a fixed number of
sectors. Instead of this, it must be rounded up to the next consecutive
sector. Fixing this results in much smaller compressed images.
Signed-off-by: Radoslav Gerganov <rgerganov@vmware.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Add a test for checking a qcow2 file with a multiple of 2^32 clusters.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Sadly, some images may have more clusters than what can be represented
using a plain int. We should be prepared for that case (in
qcow2_check_refcounts() we actually were trying to catch that case, but
since size_to_clusters() truncated the returned value, that check never
did anything useful).
Cc: qemu-stable <qemu-stable@nongnu.org>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
For updating the cache sizes, disabling lazy refcounts and updating the
clean_cache_timer there is a bit more to do than just changing the
variables, but otherwise we're all set for changing options during
bdrv_reopen().
Just implement the missing pieces and hook the functions up in
bdrv_reopen().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Before we can allow updating options at runtime with bdrv_reopen(), we
need to split the function into prepare/commit/abort parts.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
On return, either all new options should be applied to BDRVQcowState (on
success), or all of the old settings should be preserved (on failure).
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
With this commit, the handling of driver-specific options in
qcow2_open() is completely separated out into qcow2_update_options().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
qcow2_update_options() only updates some variables in BDRVQcowState and
doesn't really depend on other parts of it being initialised yet, so it
can be moved so that it immediately follows the other half of option
handling code in qcow2_open().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Eventually we want to be able to change options at runtime. As a first
step towards that goal, separate some option handling code from the
general initialisation code in qcow2_open().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Eric says that "any" sounds better than "either", and my non-native
feeling says the same, so let's change it.
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
qemu_opts_parse_noisily() already prints an error message with the exact
reason why the parsing failed. No need to add another less specific one.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
BDRVQcowState is already used by qcow1, and gdb is always confused which
one to use. Rename the qcow2 one so they can be distinguished.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Now that this parameter is effectively unused, we can drop it and change
the function accordingly.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Now that this parameter is effectively unused, we can drop it and just
pass NULL to bdrv_fill_options().
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Now that this parameter is effectively unused, we can drop it and just
pass NULL on to bdrv_open_inherit().
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Change all callers of bdrv_open() to pass the driver name in the options
QDict instead of passing its BlockDriver pointer.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Usually, eliminate an operation from the translator by combining
a shift with an extract.
In the case of gen_set_NZ64, we don't need a boolean value for cpu_ZF,
merely a non-zero value. Given that we can extract both halves of a
64-bit input in one call, this simplifies the code.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-id: 1441909103-24666-12-git-send-email-rth@twiddle.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For !SF, this initial ext32u can't be optimized away by the
current TCG code generator. (It would require backward bit
liveness propagation.)
But since the range of bits for !SF are already constrained by
unallocated_encoding, we'll never reference the high bits anyway.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-id: 1441909103-24666-10-git-send-email-rth@twiddle.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This is a bug fix for aarch64. At present, we have branches using
the 32-bit (translate.c) versions of cpu_[NZCV]F, but we set the flags
using the 64-bit (translate-a64.c) versions of cpu_[NZCV]F. From
the view of the TCG code generator, these are unrelated variables.
The bug is hard to see because we currently only read these variables
from branches, and upon reaching a branch TCG will first spill live
variables and then reload the arguments of the branch. Since the
32-bit versions were never live until reaching the branch, we'd re-read
the data that had just been spilled from the 64-bit versions.
There is currently no such problem with the cpu_exclusive_* variables,
but there's no point in tempting fate.
Cc: qemu-stable@nongnu.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-id: 1441909103-24666-2-git-send-email-rth@twiddle.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
If host and target endianness does not match, loding an initramfs does not work.
Fix by writing boot parameters with appropriate endianness conversion.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
The SH4 shad instruction can shift in both direction, depending on the
sign of the shift. This is currently implemented using branches, which
is not really efficient and prevents the optimizer to do its job. In
practice it is often used with a constant loaded in a register just
before.
Simplify the implementation by computing both the value shifted to the
left and to the right, and then selecting the correct one with a
movcond. As with a negative value the shift amount can go up to 32 which
is undefined, we shift the value in two steps.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
The SH4 shld instruction can shift in both direction, depending on the
sign of the shift. This is currently implemented using branches, which
is not really efficient and prevents the optimizer to do its job. In
practice it is often used with a constant loaded in a register just
before.
Simplify the implementation by computing both the value shifted to the
left and to the right, and then selecting the correct one with a
movcond. As with a negative value the shift amount can go up to 32 which
is undefined, we shift the value in two steps.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Instead of testing bytes one by one, we can use the following trick
from https://graphics.stanford.edu/~seander/bithacks.html:
haszero(v) = (v - 0x01010101) & ~v & 0x80808080
The subexpression v - 0x01010101, evaluates to a high bit set in any
byte whenever the corresponding byte in v is zero or greater than 0x80.
The sub-expression ~v & 0x80808080 evaluates to high bits set in bytes
where the byte of v doesn't have its high bit set (so the byte was less
than 0x80). Finally, by ANDing these two sub-expressions the result is
the high bits set where the bytes in v were zero, since the high bits
set due to a value greater than 0x80 in the first sub-expression are
masked off by the second.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Most floating point helpers can trigger an exception, but don't change
the globals. Mark these helpers as TCG_CALL_NO_WG.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This patch introduces loop exit function, which also
restores guest CPU state according to the value of host
program counter.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150710095702.13280.97477.stgit@PASHA-ISP>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Now that the cpu_ld/st_* function directly call helper_ret_ld/st, we can
drop the old helper_ld/st functions.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150710095656.13280.7085.stgit@PASHA-ISP>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This patch introduces several helpers to pass return address
which points to the TB. Correct return address allows correct
restoring of the guest PC and icount. These functions should be used when
helpers embedded into TB invoke memory operations.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150710095650.13280.32255.stgit@PASHA-ISP>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This is set to true when the index is for an instruction fetch
translation.
The core get_page_addr_code() sets it, as do the SOFTMMU_CODE_ACCESS
acessors.
All targets ignore it for now, and all other callers pass "false".
This will allow targets who wish to split the mmu index between
instruction and data accesses to do so. A subsequent patch will
do just that for PowerPC.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Message-Id: <1439796853-4410-2-git-send-email-benh@kernel.crashing.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Warnings from the Sparse static analysis tool:
linux-user/main.c:40:12: warning:
symbol 'filename' was not declared. Should it be static?
linux-user/main.c:41:12: warning:
symbol 'argv0' was not declared. Should it be static?
linux-user/main.c:42:5: warning:
symbol 'gdbstub_port' was not declared. Should it be static?
linux-user/main.c:43:11: warning:
symbol 'envlist' was not declared. Should it be static?
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This will let us print options in a format that the user would actually
write it on the command line (foo=bar,baz=asd,etc=def), without
prepending a spurious comma at the beginning of the list, or quoting
values unnecessarily. This patch provides the following changes:
* write and id=, if the option has an id
* do not print separator before the first element
* do not quote string arguments
* properly escape commas (,) for QEMU
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
My Coccinelle semantic patch finds a few more, because it also fixes up
the equally pointless conditional
if (foo) {
free(foo);
foo = NULL;
}
Result (feel free to squash it into your patch):
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The free() and g_free() functions both happily accept
NULL on any platform QEMU builds on. As such putting a
conditional 'if (foo)' check before calls to 'free(foo)'
merely serves to bloat the lines of code.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
A number of files were including strings.h but not using any
of the functions it provides
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
A number of files were including signal.h but not using any
of the functions it provides
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
A number of files were including dirent.h but not using any
of the functions it provides
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
A number of files were including assert.h but not using any
of the functions it provides
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Many source files have doubled words (eg "the the", "to to",
and so on). Most of these can simply be removed, but a couple
were actual mis-spellings (eg "to to" instead of "to do").
There was even one triple word score "to to to" :-)
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
A number of source files have statements accidentally
terminated by a double semicolon - eg 'foo = bar;;'.
This is harmless but a mistake none the less.
The tcg/ia64/tcg-target.c file is whitelisted because
it has valid use of ';;' in a comment containing assembly
code.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
We use muldiv64() to compute the time to wait:
timeout = muldiv64(get_ticks_per_sec(), timeout, 33000000);
but get_ticks_per_sec() is 10^9 (30 bit value) and timeout
is a 35 bit value.
Whereas muldiv64 is:
uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
So we loose 3 bits of timeout.
Swapping get_ticks_per_sec() and timeout fixes it.
We can also replace it by a multiplication by 30 ns,
but this changes PCI clock frequency from 33MHz to 33.333333MHz
and we need to do this on all the QEMU PCI devices (later...)
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
xen-2015-09-10
# gpg: Signature made Thu 10 Sep 2015 17:52:08 BST using RSA key ID 70E1AE90
# gpg: Good signature from "Stefano Stabellini <stefano.stabellini@eu.citrix.com>"
* remotes/sstabellini/tags/xen-2015-09-10-tag: (29 commits)
xen/pt: Don't slurp wholesale the PCI configuration registers
xen/pt: Check for return values for xen_host_pci_[get|set] in init
xen/pt: Move bulk of xen_pt_unregister_device in its own routine.
xen/pt: Make xen_pt_unregister_device idempotent
xen/pt: Log xen_host_pci_get/set errors in MSI code.
xen/pt: Log xen_host_pci_get in two init functions
xen/pt: Remove XenPTReg->data field.
xen/pt: Check if reg->init function sets the 'data' past the reg->size
xen/pt: Sync up the dev.config and data values.
xen/pt: Use xen_host_pci_get_[byte|word] instead of dev.config
xen/pt: Use XEN_PT_LOG properly to guard against compiler warnings.
xen/pt/msi: Add the register value when printing logging and error messages
xen: use errno instead of rc for xc_domain_add_to_physmap
xen/pt: xen_host_pci_config_read returns -errno, not -1 on failure
xen/pt: Make xen_pt_msi_set_enable static
xen/pt: Update comments with proper function name.
xen/HVM: atomically access pointers in bufioreq handling
xen-hvm: When using xc_domain_add_to_physmap also include errno when reporting
xen, gfx passthrough: add opregion mapping
xen, gfx passthrough: register host bridge specific to passthrough
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Instead we have the emulation registers ->init functions which
consult the host values to see what the initial value should be
and they are responsible for populating the dev.config.
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
and if we have failures we call xen_pt_destroy introduced in
'xen/pt: Move bulk of xen_pt_unregister_device in its own routine.'
and free all of the allocated structures.
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
To deal with xen_host_pci_[set|get]_ functions returning error values
and clearing ourselves in the init function we should make the
.exit (xen_pt_unregister_device) function be idempotent in case
the generic code starts calling .exit (or for fun does it before
calling .init!).
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
We do not want to have two entries to cache the guest configuration
registers: XenPTReg->data and dev.config. Instead we want to use
only the dev.config.
To do without much complications we rip out the ->data field
and replace it with an pointer to the dev.config. This way we
have the type-checking (uint8_t, uint16_t, etc) and as well
and pre-computed location.
Alternatively we could compute the offset in dev.config by
using the XenPTRRegInfo and XenPTRegGroup every time but
this way we have the pre-computed values.
This change also exposes some mis-use:
- In 'xen_pt_status_reg_init' we used u32 for the Capabilities Pointer
register, but said register is an an u16.
- In 'xen_pt_msgdata_reg_write' we used u32 but should have only use u16.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
It should never happen, but in case it does (an developer adds
a new register and the 'init_val' expands past the register
size) we want to report. The code will only write up to
reg->size so there is no runtime danger of the register spilling
across other ones - however to catch this sort of thing
we still return an error.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
For a passthrough device we maintain a state of emulated
registers value contained within d->config. We also consult
the host registers (and apply ro and write masks) whenever
the guest access the registers. This is done in xen_pt_pci_write_config
and xen_pt_pci_read_config.
Also in this picture we call pci_default_write_config which
updates the d->config and if the d->config[PCI_COMMAND] register
has PCI_COMMAND_MEMORY (or PCI_COMMAND_IO) acts on those changes.
On startup the d->config[PCI_COMMAND] are the host values, not
what the guest initial values should be, which is exactly what
we do _not_ want to do for 64-bit BARs when the guest just wants
to read the size of the BAR. Huh you say?
To get the size of 64-bit memory space BARs, the guest has
to calculate ((BAR[x] & 0xFFFFFFF0) + ((BAR[x+1] & 0xFFFFFFFF) << 32))
which means it has to do two writes of ~0 to BARx and BARx+1.
prior to this patch and with XSA120-addendum patch (Linux kernel)
the PCI_COMMAND register is copied from the host it can have
PCI_COMMAND_MEMORY bit set which means that QEMU will try to
update the hypervisor's P2M with BARx+1 value to ~0 (0xffffffff)
(to sync the guest state to host) instead of just having
xen_pt_pci_write_config and xen_pt_bar_reg_write apply the
proper masks and return the size to the guest.
To thwart this, this patch syncs up the host values with the
guest values taking into account the emu_mask (bit set means
we emulate, PCI_COMMAND_MEMORY and PCI_COMMAND_IO are set).
That is we copy the host values - masking out any bits which
we will emulate. Then merge it with the initial emulation register
values. Lastly this value is then copied both in
dev.config _and_ XenPTReg->data field.
There is also reg->size accounting taken into consideration
that ends up being used in patch.
xen/pt: Check if reg->init function sets the 'data' past the reg->size
This fixes errors such as these:
(XEN) memory_map:add: dom2 gfn=fffe0 mfn=fbce0 nr=20
(DEBUG) 189 pci dev 04:0 BAR16 wrote ~0.
(DEBUG) 200 pci dev 04:0 BAR16 read 0x0fffe0004.
(XEN) memory_map:remove: dom2 gfn=fffe0 mfn=fbce0 nr=20
(DEBUG) 204 pci dev 04:0 BAR16 wrote 0x0fffe0004.
(DEBUG) 217 pci dev 04:0 BAR16 read upper 0x000000000.
(XEN) memory_map:add: dom2 gfn=ffffffff00000 mfn=fbce0 nr=20
(XEN) p2m.c:883:d0v0 p2m_set_entry failed! mfn=ffffffffffffffff rc:-22
(XEN) memory_map:fail: dom2 gfn=ffffffff00000 mfn=fbce0 nr=20 ret:-22
(XEN) memory_map:remove: dom2 gfn=ffffffff00000 mfn=fbce0 nr=20
(XEN) p2m.c:920:d0v0 gfn_to_mfn failed! gfn=ffffffff00000 type:4
(XEN) p2m.c:920:d0v0 gfn_to_mfn failed! gfn=ffffffff00001 type:4
..
(XEN) memory_map: error -22 removing dom2 access to [fbce0,fbcff]
(DEBUG) 222 pci dev 04:0 BAR16 read upper 0x0ffffffff.
(XEN) memory_map:remove: dom2 gfn=ffffffff00000 mfn=fbce0 nr=20
(XEN) memory_map: error -22 removing dom2 access to [fbce0,fbcff]
[The DEBUG is to illustate what the hvmloader was doing]
Also we swap from xen_host_pci_long to using xen_host_pci_get_[byte,word,long].
Otherwise we get:
xen_pt_config_reg_init: Offset 0x0004 mismatch! Emulated=0x0000, host=0x2300017, syncing to 0x2300014.
xen_pt_config_reg_init: Error: Offset 0x0004:0x2300014 expands past register size(2)!
which is not surprising. We read the value as an 32-bit (from host),
then operate it as a 16-bit - and the remainder is left unchanged.
We end up writing the value as 16-bit (so 0014) to dev.config
(as we use proper xen_set_host_[byte,word,long] so we don't spill
to other registers) but in XenPTReg->data it is as 32-bit (0x2300014)!
It is harmless as the read/write functions end up using an size mask
and never modify the bits past 16-bit (reg->size is 2).
This patch fixes the warnings by reading the value using the
proper size.
Note that the check for size is still left in-case the developer
sets bits past the reg->size in the ->init routines. The author
tried to fiddle with QEMU_BUILD_BUG to make this work but failed.
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
During init time we treat the dev.config area as a cache
of the host view. However during execution time we treat it
as guest view (by the generic PCI API). We need to sync Xen's
code to the generic PCI API view. This is the first step
by replacing all of the code that uses dev.config or
pci_get_[byte|word] to get host value to actually use the
xen_host_pci_get_[byte|word] functions.
Interestingly in 'xen_pt_ptr_reg_init' we also needed to swap
reg_field from uint32_t to uint8_t - since the access is only
for one byte not four bytes. We can split this as a seperate
patch however we would have to use a cast to thwart compiler
warnings in the meantime.
We also truncated 'flags' to 'flag' to make the code fit within
the 80 characters.
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
error: On abort, report where the error was created
# gpg: Signature made Thu 10 Sep 2015 13:01:39 BST using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
* remotes/armbru/tags/pull-error-2015-09-10:
error: On abort, report where the error was created
error: Revamp interface documentation
error: error_set_errno() is unused, drop
qga/vss-win32: Document the DLL requires non-null errp
qga: Clean up unnecessarily dirty casts
error: Make error_setg() a function
error: De-duplicate code creating Error objects
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
If XEN_PT_LOGGING_ENABLED is enabled the XEN_PT_LOG macros start
using the first argument. Which means if within the function there
is only one user of the argument ('d') and XEN_PT_LOGGING_ENABLED
is not set, we get compiler warnings. This is not the case now
but with the "xen/pt: Use xen_host_pci_get_[byte|word] instead of dev.config"
we will hit - so this sync up the function to the rest of them.
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
We would like to know what the MSI register value is to help
in troubleshooting in the field. As such modify the logging
logic to include such details in xen_pt_msgctrl_reg_write.
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
In Xen 4.6 commit cd2f100f0f61b3f333d52d1737dd73f02daee592
"libxc: Fix do_memory_op to return negative value on errors"
made the libxc API less odd-ball: On errors, return value is
-1 and error code is in errno. On success the return value
is either 0 or an positive value.
Since we could be running with an old toolstack in which the
Exx value is in rc or the newer, we add an wrapper around
the xc_domain_add_to_physmap (called xen_xc_domain_add_to_physmap)
which will always return the EXX.
Xen 4.6 did not change the libxc functions mentioned (same parameters)
so we piggyback on the fact that Xen 4.6 has a new function:
commit 504ed2053362381ac01b98db9313454488b7db40 "tools/libxc: Expose
new hypercall xc_reserved_device_memory_map" and check for that.
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Suggested-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
However the init routines assume that on errors the return
code is -1 (as the libxc API is) - while those xen_host_* routines follow
another paradigm - negative errno on return, 0 on success.
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
The number of slots per page being 511 (i.e. not a power of two) means
that the (32-bit) read and write indexes going beyond 2^32 will likely
disturb operation. The hypervisor side gets I/O req server creation
extended so we can indicate that we're using suitable atomic accesses
where needed, allowing it to atomically canonicalize both pointers when
both have gone through at least one cycle.
The Xen side counterpart (which is not a functional prereq to this
change, albeit a build one) went in already (commit b7007bc6f9).
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Currently IGD drivers always need to access PCH by 1f.0. But we
don't want to poke that directly to get ID, and although in real
world different GPU should have different PCH. But actually the
different PCH DIDs likely map to different PCH SKUs. We do the
same thing for the GPU. For PCH, the different SKUs are going to
be all the same silicon design and implementation, just different
features turn on and off with fuses. The SW interfaces should be
consistent across all SKUs in a given family (eg LPT). But just
same features may not be supported.
Most of these different PCH features probably don't matter to the
Gfx driver, but obviously any difference in display port connections
will so it should be fine with any PCH in case of passthrough.
So currently use one PCH version, 0x8c4e, to cover all HSW(Haswell)
scenarios, 0x9cc3 for BDW(Broadwell).
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Now we retrieve VGA bios like kvm stuff in qemu but we need to
fix Device Identification in case if its not matched with the
real IGD device since Seabios is always trying to compare this
ID to work out VGA BIOS.
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
We will try to reuse assign_dev_load_option_rom in xen side, and
especially its a good beginning to unify pci assign codes both on
kvm and xen in the future.
[Fix build for Windows]
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Implement a pci host bridge specific to passthrough. Actually
this just inherits the standard one. And we also just expose
a minimal real host bridge pci configuration subset.
[Replace pread with lseek and read to fix Windows build]
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
This is particularly useful when we abort in error_propagate(),
because there the stack backtrace doesn't lead to where the error was
created. Looks like this:
Unexpected error in parse_block_error_action() at .../qemu/blockdev.c:322:
qemu-system-x86_64: -drive if=none,werror=foo: 'foo' invalid write error action
Aborted (core dumped)
Note: to get this example output, I monkey-patched drive_new() to pass
&error_abort to blockdev_init().
To keep the error handling boiler plate from growing even more, all
error_setFOO() become macros expanding into error_setFOO_internal()
with additional __FILE__, __LINE__, __func__ arguments. Not exactly
pretty, but it works.
The macro trickery breaks down when you take the address of an
error_setFOO(). Fortunately, we do that in just one place: qemu-ga's
Windows VSS provider and requester DLL wants to call
error_setg_win32() through a function pointer "to avoid linking glib
to the DLL". Use error_setg_win32_internal() there. The use of the
function pointer is already wrapped in a macro, so the churn isn't
bad.
Code size increases by some 35KiB for me (0.7%). Tolerable. Could be
less if we passed relative rather than absolute source file names to
the compiler, or forwent reporting __func__.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
requester.cpp uses this pattern to receive an error and pass it on to
the caller (err_is_set() macro peeled off for clarity):
... code that may set errset->errp ...
if (errset->errp && *errset->errp) {
... handle error ...
}
This breaks when errset->errp is null. As far as I can tell, it
currently isn't, so this is merely fragile, not actually broken.
The robust way to do this is to receive the error in a local variable,
then propagate it up, like this:
Error *err = NULL;
... code that may set err ...
if (err)
... handle error ...
error_propagate(errset->errp, err);
}
See also commit 5e54769, 0f230bf, a903f40.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
qga_vss_fsfreeze() casts error_set_win32() from
void (*)(Error **, int, ErrorClass, const char *, ...)
to
void (*)(void **, int, int, const char *, ...)
The result is later called. Since the two types are not compatible,
the call is undefined behavior. It works in practice anyway.
However, there's no real need for trickery here. Clean it up as
follows:
* Declare struct Error, and fix the first parameter.
* Switch to error_setg_win32(). This gets rid of the troublesome
ErrorClass parameter. Requires converting error_setg_win32() from
macro to function, but that's trivially easy, because this is the
only user of error_set_win32().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Duplicated when commit 680d16d added error_set_errno(), and again when
commit 20840d4 added error_set_win32().
Make the original copy in error_set() reusable by factoring out
error_setv(), then rewrite error_set_errno() and error_set_win32() on
top of it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
virtio,pc,acpi fixes, cleanups
Fixes all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Thu 10 Sep 2015 10:16:18 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
hw/pci: fix pci_update_mappings() trace events
pc: memhotplug: keep reserved-memory-end broken on 2.4 and earlier machines
pc: memhotplug: fix incorrectly set reserved-memory-end
acpi: Remove unused definition.
virtio: avoid leading underscores for helpers
pc: Remove redundant arguments from xen_hvm_init()
pci: Fix pci_device_iommu_address_space() bus propagation
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The current trace prototypes and (matching) trace calls lead to
"unorthodox" PCI BDF notation in at least the stderr trace backend. For
example, the four BARs of a QXL video card at 00:01.0 (bus 0, slot 1,
function 0) are traced like this (PID and timestamps removed):
pci_update_mappings_add d=0x7f14a73bf890 00:00.1 0,0x84000000+0x4000000
pci_update_mappings_add d=0x7f14a73bf890 00:00.1 1,0x80000000+0x4000000
pci_update_mappings_add d=0x7f14a73bf890 00:00.1 2,0x88200000+0x2000
pci_update_mappings_add d=0x7f14a73bf890 00:00.1 3,0xd060+0x20
The slot and function values are in reverse order.
Stick with the conventional BDF notation.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Don Koch <dkoch@verizon.com>
Cc: qemu-trivial@nongnu.org
Fixes: 7828d75045
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
it will prevent guests on old machines from seeing
inconsistent memory mapping in firmware/ACPI views.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
reserved-memory-end tells firmware address from which
it could start treating memory as PCI address space
and map PCI BARs after it to avoid collisions with
RAM.
Currently it is incorrectly pointing to address where
hotplugged memory range starts which could redirect
hotplugged RAM accesses to PCI BARs when firmware
maps them over RAM or viceverse.
Fix this by pointing reserved-memory-end to the end
of memory hotplug area.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Commit ef546f1275 ("virtio: add
feature checking helpers") introduced a helper __virtio_has_feature.
We don't want to use reserved identifiers, though, so let's
rename __virtio_has_feature to virtio_has_feature and virtio_has_feature
to virtio_vdev_has_feature.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Remove arguments that can be found in PCMachineState.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
he current code walks up the bus tree for an iommu, however it passes
to the iommu_fn() callback the bus/devfn of the immediate child of
the level where the callback was found, rather than the original
bus/devfn where the search started from.
This prevents iommu's like POWER8 (and in fact also Q35) to properly
provide an address space for a subset of devices that aren't immediate
children of the iommu.
PCIe carries the originator bdfn acccross to the iommu on all DMA
transactions, so we must be able to properly identify devices at all
levels.
This changes the function pci_device_iommu_address_space() to pass
the original pointers to the iommu_fn() callback instead.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Linux returns 0 if no conversion was made, while OS X and presumably
the BSDs return EINVAL. The OS X convention rejects more invalid
inputs, so convert to it and adjust the test case.
Windows returns 1 from strtoul and strtoull (instead of -1) for
negative out-of-range input; fix it up.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
tb_lock has to be taken inside the mmap_lock (example:
tb_invalidate_phys_range is called by target_mmap), but
tb_link_page is taking the mmap_lock and it is called
with the tb_lock held.
To fix this, take the mmap_lock in tb_find_slow, not
in tb_link_page.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There is some iffy lock hierarchy going on in translate-all.c. To
fix it, we need to take the mmap_lock in cpu-exec.c. Make the
functions globally available.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
page_find is reading the radix tree outside all locks, so it has to
use the RCU primitives. It does not need RCU critical sections
because the PageDescs are never removed, so there is never a need
to wait for the end of code sections that use a PageDesc.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
spinlock is only used in two cases:
* cpu-exec.c: to protect TranslationBlock
* mem_helper.c: for lock helper in target-i386 (which seems broken).
It's a pthread_mutex_t in user-mode, so we can use QemuMutex directly,
with an #ifdef. The #ifdef will be removed when multithreaded TCG
will need the mutex as well.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Message-Id: <1439220437-23957-5-git-send-email-fred.konrad@greensocs.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
[Merge Emilio G. Cota's patch to remove volatile. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This hides the tcg_halt_cond and tcg_cpu_thread global variables
inside qemu_tcg_init_vcpu. Multi-threaded TCG will need one
QemuCond and one QemuThread per virtual cpu, so it's preferrable
to use cpu->halt_cond and cpu->thread.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Message-Id: <1439220437-23957-9-git-send-email-fred.konrad@greensocs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Protect the list of queued work items with something other than
the BQL, as a preparation for running the work items outside it.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This adds "--enable-jemalloc" and "--disable-jemalloc" to allow linking
to jemalloc memory allocator.
We have already tcmalloc support,
but it seem to not working well with a lot of iothreads/disks.
The main problem is that tcmalloc use a shared thread cache of 16MB
by default.
With more threads, this cache is shared, and some bad garbage collections
can occur if the cache is too low.
It's possible to tcmalloc cache increase it with a env var:
TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES=256MB
With default 16MB, performances are really bad with more than 2 disks.
Increasing to 256MB, it's helping but still have problem with 16 disks/iothreads.
Jemalloc don't have performance problem with default configuration.
Here the benchmark results in iops of 1 qemu vm randread 4K iodepth=32,
with rbd block backend (librbd is doing a lot of memory allocation),
1 iothread by disk
glibc malloc
------------
1 disk 29052
2 disks 55878
4 disks 127899
8 disks 240566
15 disks 269976
jemalloc
--------
1 disk 41278
2 disks 75781
4 disks 195351
8 disks 294241
15 disks 298199
tcmalloc 2.2.1 default 16M cache
--------------------------------
1 disk 37911
2 disks 67698
4 disks 41076
8 disks 43312
15 disks 37569
tcmalloc : 256M cache
---------------------------
1 disk 33914
2 disks 58839
4 disks 148205
8 disks 213298
15 disks 218383
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
Message-Id: <1434711418-20429-1-git-send-email-aderumier@odiso.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Coccinelle chokes on some idioms from compiler.h and queue.h.
Extract those in a macro file, to be used with "--macro-file
scripts/cocci-macro-file.h".
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fully removing Sparse support requires more invasive changes. Only
remove the really kernel-specific parts such as address space names.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Mostly change severity levels, but some tests can also be adjusted to refer
to QEMU APIs or data structures.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Mixed declarations do come in handy at the top of #ifdef blocks.
Reluctantly allow this particular usage and suggest an alternative.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
l1_map is based on physical addresses in full-system mode, as pointed
out in an earlier comment. Said comment also mentions that virtual
addresses are only used in l1_map in user-only mode.
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1440375847-17603-11-git-send-email-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Using ccache with CCACHE_BASEDIR set to $(SRC_PATH) or a parent will
rewrite all absolute paths to relative paths. This interacts poorly with
QEMU's two-level build directory scheme. For example, lets say
BUILD_DIR=$(SRC_PATH)/build so build/blockdev.d will contain:
blockdev.o: ../blockdev.c ../include/sysemu/block-backend.h \
Now the target build under build/x86_64-softmmu or similar will depend
on ../blockdev.o which in turn will get make to source ../blockdev.d to
check its dependencies. Since make always considers paths relative to
the current working directory rather than the makefile the path appeared
in the relative path to ../blockdev.c is useless.
This change simply adds the top level build directory to vpath so paths
relative to the source directory, top build directory, and target build
directory all work just fine.
Signed-off-by: Michael Marineau <michael.marineau@coreos.com>
Message-Id: <1439103775-11836-1-git-send-email-michael.marineau@coreos.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signals are slow and do not exist on Win32. The previous patches
have done most of the legwork to introduce memory barriers (some
of them were even there already for the sake of Windows!) and
we can now set the flags directly in the iothread.
qemu_cpu_kick_thread is not used anymore on TCG, since the TCG thread is
never outside usermode while the CPU is running (not halted). Instead run
the content of the signal handler (now in qemu_cpu_kick_no_halt) directly.
qemu_cpu_kick_no_halt is also used in qemu_mutex_lock_iothread to avoid
the overhead of qemu_cond_broadcast.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use the same API to trigger interruption of a CPU, no matter if
under TCG or KVM. There is no difference: these calls come from
the CPU thread, so the qemu_cpu_kick calls will send a signal
to the running thread and it will be processed synchronously,
just like a call to cpu_exit. The only difference is in the
overhead, but neither call to cpu_exit (now qemu_cpu_kick)
is in a hot path.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Synchronize the remaining pair of accesses in cpu_signal. These should
be necessary on Windows as well, at least in theory. Probably
SuspendProcess and ResumeProcess introduce some implicit memory
barrier.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
TCG has not been reading cpu->current_tb from signal handlers for years.
The code that synchronized cpu_exec with the signal handler is not
needed anymore.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
TLS is now required on all platforms, so DECLARE_TLS/DEFINE_TLS is not
needed anymore. Removing it does not break Windows because of the
previous patch.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is already useful on Windows in order to remove tls.h, because
accesses to current_cpu are done from a different thread on that
platform. It will be used on POSIX platforms as soon TCG stops using
signals to interrupt the execution of translated code.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is unused. cpu_exit now is almost exclusively an internal function
to the CPU execution loop. In a few patches, we'll change the remaining
occurrences to qemu_cpu_kick, making it truly internal.
Reviewed-by: Richard henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The i8257 DMA controller uses an idle bottom half, which by default
does not cause the main loop to exit. Therefore, the DMA_schedule
function is there to ensure that the CPU relinquishes the iothread
mutex to the iothread.
However, this is not enough since the iothread will call
aio_compute_timeout() and go to sleep again. In the iothread
world, forcing execution of the idle bottom half is much simpler,
and only requires a call to qemu_notify_event(). Do it, removing
the need for the "cpu_request_exit" pseudo-irq. The next patch
will remove it.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
target-arm queue:
* Implement priority handling properly via GICC_APR
* Enable TZ extensions on the GIC if we're using them
* Minor preparatory patches for EL3 support
* cadence_gem: Correct Marvell PHY SPCFC reset value
* Support AHCI in ZynqMP
# gpg: Signature made Tue 08 Sep 2015 17:48:33 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
* remotes/pmaydell/tags/pull-target-arm-20150908:
xlnx-zynqmp: Connect the sysbus AHCI to ZynqMP
xlnx-zynqmp.c: Convert some of the error_propagate() calls to error_abort
ahci.c: Don't assume AHCIState's parent is AHCIPCIState
ahci: Separate the AHCI state structure into the header
cadence_gem: Correct Marvell PHY SPCFC reset value
target-arm: Add AArch64 access to PAR_EL1
target-arm: Correct opc1 for AT_S12Exx
target-arm: Log the target EL when taking exceptions
target-arm: Fix default_exception_el() function for the case when EL3 is not supported
hw/arm/virt: Enable TZ extensions on the GIC if we are using them
hw/arm/virt: Default to not providing TrustZone support
hw/cpu/{a15mpcore, a9mpcore}: enable TrustZone in GIC if it is enabled in CPUs
hw/intc/arm_gic_common: Configure IRQs as NS if doing direct NS kernel boot
hw/arm: new interface for devices which need to behave differently for kernel boot
qom: Add recursive version of object_child_for_each
hw/intc/arm_gic: Actually set the active bits for active interrupts
hw/intc/arm_gic: Drop running_irq and last_active arrays
hw/intc/arm_gic: Fix handling of GICC_APR<n>, GICC_NSAPR<n> registers
hw/intc/arm_gic: Running priority is group priority, not full priority
armv7m_nvic: Implement ICSR without using internal GIC state
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The AHCIState struct can either have AHCIPCIState or SysbusAHCIState
as a parent. The ahci_irq_lower() and ahci_irq_raise() functions
assume that it is always AHCIPCIState, which is not always the
case, which causes a seg fault. Verify what the container of AHCIState
is before setting the PCIDevice struct.
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Acked-by: John Snow <jsnow@redhat.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Pull the AHCI state structure out into the header. This allows
other containers to access the struct. This is required to add
the device to modern SoC containers.
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Sai Pavan Boddu <saipava@xilinx.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Switch the default for the 'virt' board to not providing TrustZone
support in either the CPU or the GIC. This is primarily for the
benefit of UEFI, which currently assumes there is no TrustZone
support, and does not set the GIC up correctly if it is TZ-aware.
It also means the board is consistent about its behaviour whether
we're using KVM or TCG (KVM never has TrustZone support).
If TrustZone support is required (for instance for running test
suites or TZ-aware firmware) it can be enabled with the
"-machine secure=on" command line option.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1441383782-24378-6-git-send-email-peter.maydell@linaro.org
If we directly boot a kernel in NonSecure on a system where the GIC
supports the security extensions then we must cause the GIC to
configure its interrupts into group 1 (NonSecure) rather than the
usual group 0, and with their initial priority set to the highest
NonSecure priority rather than the usual highest Secure priority.
Otherwise the guest kernel will be unable to use any interrupts.
Implement this behaviour, controlled by a flag which we set if
appropriate when the ARM bootloader code calls our ARMLinuxBootIf
interface callback.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1441383782-24378-4-git-send-email-peter.maydell@linaro.org
For ARM we have a little minimalist bootloader in hw/arm/boot.c which
takes the place of firmware if we're directly booting a Linux kernel.
Unfortunately a few devices need special case handling in this situation
to do the initialization which on real hardware would be done by
firmware. (In particular if we're booting a kernel in NonSecure state
then we need to make a TZ-aware GIC put all its interrupts into Group 1,
or the guest will be unable to use them.)
Create a new QOM interface which can be implemented by devices which
need to do something different from their default reset behaviour.
The callback will be called after machine initialization and before
first reset.
Suggested-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1441383782-24378-3-git-send-email-peter.maydell@linaro.org
Although we were correctly handling interrupts becoming active
and then inactive, we weren't actually exposing this to the guest
by setting the 'active' flag for the interrupt, so reads
of GICD_ICACTIVERn and GICD_ISACTIVERn would generally incorrectly
return zeroes. Correct this oversight.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1438089748-5528-6-git-send-email-peter.maydell@linaro.org
The running_irq and last_active arrays represent state which
doesn't exist in a real hardware GIC. The only thing we use
them for is updating the running priority when an interrupt
is completed, but in fact we can use the active-priority
registers to do this. The running priority is always the
priority corresponding to the lowest set bit in the active
priority registers, because only one interrupt at any
particular priority can be active at once.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1438089748-5528-5-git-send-email-peter.maydell@linaro.org
A GICv2 has both GICC_APR<n> and GICC_NSAPR<n> registers, with
the latter holding the active priority bits for Group 1 interrupts
(usually Nonsecure interrupts), and the Nonsecure view of the
GICC_APR<n> is the second half of the GICC_NSAPR<n> registers.
Turn our half-hearted implementation of APR<n> into a proper
implementation of both APR<n> and NSAPR<n>:
* Add the underlying state for NSAPR<n>
* Make sure APR<n> aren't visible for pre-GICv2
* Implement reading of NSAPR<n>
* Make non-secure reads of APR<n> behave correctly
* Implement writing to APR<n> and NSAPR<n>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1438089748-5528-4-git-send-email-peter.maydell@linaro.org
Priority values for the GIC are divided into a "group priority"
and a "subpriority" (with the division being determined by the
binary point register). The running priority is only determined
by the group priority of the active interrupts, not the
subpriority. In particular, this means that there can't be more
than one active interrupt at any particular group priority.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1438089748-5528-3-git-send-email-peter.maydell@linaro.org
Change the implementation of the Interrupt Control and State Register
in the v7M NVIC to not use the running_irq and last_active internal
state fields in the GIC. These fields don't correspond to state in
a real GIC and will be removed soon.
The changes to the ICSR are:
* the VECTACTIVE field is documented as identical to the IPSR[8:0]
field, so implement it that way
* implement RETTOBASE via looking at the active state bits
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1438089748-5528-2-git-send-email-peter.maydell@linaro.org
IGD passthrough wants to supply a different pci and
host devices, inheriting i440fx devices. Make types
configurable.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
It has been reported that at least tgtd returns a block size of 0
for LUN 0. To avoid running into divide by zero later on and protect
against other problematic block sizes validate the block size right
at connection time.
Cc: qemu-stable@nongnu.org
Reported-by: Andrey Korolyov <andrey@xdel.ru>
Signed-off-by: Peter Lieven <pl@kamp.de>
Message-Id: <1439552016-8557-1-git-send-email-pl@kamp.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
iohandler.c shares the same interface with aio, but with duplicated
code. It's better to rebase iohandler, also because that aio is a
more friendly interface to multi-threads.
Create a global AioContext instance and let its GSource handle the
iohandler events.
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1441596538-4412-1-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
s390x fixes and improvements:
- various bugfixes (css/event-facility)
- more efficient adapter interrupt routes setup
- gdb enhancement
- sclp got treated with a lot of remodelling/cleanup
# gpg: Signature made Mon 07 Sep 2015 15:42:43 BST using RSA key ID C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
* remotes/cohuck/tags/s390x-20150907: (23 commits)
s390/sclp: simplify calculation of rnmax
s390/sclp: store the increment_size in the sclp device
s390: unify allocation of initial memory
s390: move memory calculation into the sclp device
s390/sclp: ignore memory hotplug operations if it is disabled
s390: disallow memory hotplug for the s390-virtio machine
s390: no need to manually parse for slots and maxmem
s390/sclp: move sclp_service_interrupt into the sclp device
s390/sclp: move sclp_execute related functions into the SCLP class
s390/sclp: introduce a root sclp device
s390/sclp: temporarily fix unassignment/reassignment of memory subregions
s390/sclp: replace sclp event types with proper defines
s390/sclp: rework sclp event facility initialization + device realization
sclp/s390: rework sclp cpu hotplug device notification
s390x/gdb: support reading/writing of control registers
s390x/kvm: make setting of in-kernel irq routes more efficient
pc-bios/s390-ccw: rebuild image
pc-bios/s390-ccw: Device detection in higher subchannel sets
s390x/event-facility: fix location of receive mask
s390x/css: start with cleared cstat/dstat
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Now that the calculation of the initial memory is hidden in the sclp
device, we can unify the allocation of the initial memory.
The remaining ugly part is the reserved memory for the virtio queues,
but that can be cleaned up later.
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
The restrictions for memory calculation belong to the sclp device.
Let's move the calculation to that point, so we are able to unify it for
both s390 machines. The sclp device is the first device to be initialized.
It performs the calculation and safely stores it in the machine, where
other parts of the system can access an reuse it.
The memory hotplug device is now only created when it is really needed.
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
If no memory hotplug device was created, the sclp command facility is
not exposed (SCLP_FC_ASSIGN_ATTACH_READ_STOR). We therefore have no
memory hotplug and should correctly report SCLP_RC_INVALID_SCLP_COMMAND
if any such command is executed.
This gets rid of these ugly asserts that could have been triggered
for the s390-virtio machine.
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
That machine type doesn't currently support memory hotplug, so let's abort
if it is requested. Reason is, that the virtio queues are allocated for now
at the end of the initial ram - extending the ram is therefore not possible.
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Let's make that function a method of the new sclp device, keeping
the wrapper for existing users.
We can now let go of get_event_facility().
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Let's move the sclp_execute related functions into the SCLP class
and pass the device state as parameter, so we have easy access to
the SCLPDevice later on.
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Let's create a root sclp device, which has other sclp devices as
children (e.g. the event facility for now) and can later be used
for migration of sclp specific attributes and setup of memory.
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Commit 374f2981d1 ("memory: protect current_map by RCU") broke
unassignment of standby memory on s390x. Looks like that the new
parallelism allows races with our (semi broken) memory hotplug code. The
flatview_unref() can now be executed after our unparenting. Therefore
memory_region_unref() tries to unreference the MemoryRegion itself instead
of the parent.
In theory, MemoryRegions are now bound to separate devices that control
their lifetime. We don't have this yet, so we really want to control their
lifetime manually.
This patch fixes it temporarily, until we have a proper rework. The only
drawback is that they won't pop up in "info qom-tree", but that's better
than qemu crashes.
We have to release the reference to a memory region after a
memory_region_find, as it automatically takes a reference. As we're now
able to reassign memory, the MemoryRegion is in fact deleted (otherwise
vmstate_register_ram() would complain).
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
The current code only works by chance. The event facility is a sysbus
device, but specifies in its class structure as parent the DeviceClass
(instead of a device class).
The init function in return lies therefore at the same position as
the init function of SysBusDeviceClass and gets triggered instead -
a very bad idea of doing that (e.g. the parameter types don't match).
Let's bring the initialization code up to date, initializing the event
facility + child events in .instance_init and moving the realization of
the child events out of the init call, into the realization step.
Device realization is now automatically performed when the event facility
itself is realized. That realization implicitly triggers realization of
the child bus, which in turn initializes the events.
Please note that we have to manually propagate the realization of the bus
children, common code still has a TODO set for that task.
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Let's get rid of this strange local variable + irq logic and
work directly on the QOM. (hint: what happens if two such devices
are created?)
We could introduce proper QOM class + state for the cpu hotplug device,
however that would result in too much overhead for a simple
"trigger_signal" function.
Also remove one unnecessary class function initialization.
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Let's support reading and writing of control registers for kvm and tcg.
We have to take care of flushing the tlb (tcg) and pushing the changed
registers into kvm.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
When we add new adapter routes we call kvm_irqchip_add_route() for every
virtqueue and in the same step also do the KVM_SET_GSI_ROUTING ioctl.
This is unnecessary costly as the interface allows us to set multiple
routes in one go. Let's first add all routes to the table stored in the
global kvm_state and then do the ioctl to commit the routes to the
in-kernel irqchip.
This saves us several ioctls to the kernel where for each call a list
is reallocated and populated.
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
If no bootdevice was specified, we try to autodetect a suitable IPL
device. Current code only searched in subchannel set 0; extend this
search to higher subchannel sets as well.
Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
For read event mask, we assumed that the layout of the sccb was
|sccb header|event buffer header|receive mask|...|
The correct layout, however, is
|sccb header|receive mask|...|
as in-buffer and
|sccb header|event buffer header|...|
as out-buffer.
Fix this: This makes selective read work.
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
When executing the start function, we should start with a clear state
regarding subchannel and device status; it is easy to forget updating one
of them after the ccw has been processed.
Note that we don't need to care about resetting the various control
fields: They are cleared by tsch(), and if they were still pending,
we wouldn't be able to execute the start function in the first
place.
Also note that we don't want to clear cstat/dstat if a suspended
subchannel is resumed.
This fixes a bug where we would continue to present channel-program
check in cstat even though later ccw requests for the subchannel
finished without error (i.e. cstat should be 0).
Cc: qemu-stable@nongnu.org
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
For selective read event, we need to check if any event is requested
that is not active instead of whether none of the requested events is
active.
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Type-0 ccws need to have a count > 0 for any command other than TIC.
Generate a channel-program check if this is not the case.
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
In CCW-0 format TIC command 4 highest bits are ignored in the subchannel.
In CCW-1 format the TIC command 4 highest bits must be 0.
To convert TIC from CCW-0 to CCW-1 we clear the 4 highest bits
to guarantee compatibility.
Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Since the pow2floor() function is now used in a hot code path,
make it inline; for consistency, provide pow2ceil() as an inline
function too.
Because these functions use ctz64() we have to put the inline
versions into host-utils.h, so they have access to ctz64(),
and move the inline is_power_of_2() along with them.
We then need to include host-utils.h from qemu-common.h so that
the files which use these functions via qemu-common.h still have
access to them.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1437741192-20955-7-git-send-email-peter.maydell@linaro.org
A couple of places in hw/pci use an inline calculation to round a
size up to the next largest power of 2. We have a utility routine
for this, so use it.
(The behaviour of the old code is different if the size value
is 0 -- it would leave it as 0 rather than rounding up to 1,
but in both cases we know the size can't be 0.
In the case where the size value had bit 31 set, the old code
would invoke undefined behaviour; the new code will give a
result of 0. Presumably that could never happen either.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 1437741192-20955-2-git-send-email-peter.maydell@linaro.org
Block layer patches
# gpg: Signature made Fri 04 Sep 2015 20:45:33 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
* remotes/kevin/tags/for-upstream:
quorum: validate vote threshold against num_children even if read-pattern is fifo
qcow2: reorder fields in Qcow2CachedTable to reduce padding
docs: document how to configure the qcow2 L2/refcount caches
qcow2: add option to clean unused cache entries after some time
qcow2: mark the memory as no longer needed after qcow2_cache_empty()
iotests: Warn if python subprocess is killed
iotests: Do not suppress segfaults in bash tests
iotests: Respect -nodefaults in tests 41 and 55
iotests: More options for VM.add_drive()
qemu-img: Fix crash in amend invocation
block/raw-posix: Use raw_normalize_devicepath()
qemu-iotests: s390x: fix test 130
qemu-iotests: s390x: fix test 049, reject negative sizes in QemuOpts
qemu-iotests: s390x: fix test 041 and 055
qemu-iotests: disable default qemu devices for cross-platform compatibility
qemu-iotests: qemu machine type support
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
target-arm queue:
* cleanup to use g_new() and friends
* support semihosting in A64
* add SMBIOS support to mach-virt
* remove hw_error() usages
* fix bug in the AArch32:AArch64 register mapping
* add a second PCI memory window in highmem on virt board
* fix bug in arm_excp_unmasked()
* add i.MX31 SoC
* remove restriction on handling affinity values in virt board
# gpg: Signature made Mon 07 Sep 2015 10:40:48 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
* remotes/pmaydell/tags/pull-target-arm-20150907: (27 commits)
arm/virt: Add full-sized CPU affinity handling
target-arm: Refactor CPU affinity handling
i.MX: Add i2C devices to i.MX31 SOC
i.MX: Add qtest support for I2C device emulator.
i.MX: Add the i.MX25 PDK platform
i.MX: Add SOC support for i.MX25
i.MX: Add FEC Ethernet Emulator
i.MX: Add I2C controller emulator
i.MX: KZM: use standalone i.MX31 SOC support
i.MX: Add SOC support for i.MX31
target-arm: Fix arm_excp_unmasked() function
hw/arm/virt: Add high MMIO PCI region, 512G in size
target-arm: Fix AArch32:AArch64 general-purpose register mapping
arm: Remove hw_error() usages.
arm: cpu: assert() on no-EL2 virt IRQ error condition.
smbios: implement smbios support for mach-virt
smbios: add smbios 3.0 support
target-arm: Wire up HLT 0xf000 as the A64 semihosting instruction
target-arm/arm-semi.c: SYS_EXIT on A64 takes a parameter block
target-arm/arm-semi.c: Implement A64 specific SyncCacheRange call
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Convert the KZM board to use the i.MX31 SoC defintition instead of
redefining the entire SoC on the machine level. Major rewrite of the
machine init code.
While touching the memory map comment de-indent to the correct level
of indentation.
This obsoletes the legacy i.MX device device creation helpers which are removed.
Tested by booting a minimal Linux system on the emulated platform
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 5e783561f092e1c939562fdff001f1ab1194b07f.1441057361.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This large region is necessary for some devices like ivshmem and video cards
32-bit kernels can be built without LPAE support. In this case such a kernel
will not be able to use PCI controller which has windows in high addresses.
In order to work around the problem, "highmem" option is introduced. It
defaults to on on, but can be manually set to off in order to be able to run
those old 32-bit guests.
Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Shannon Zhao <shannon.zhao@linaro.org>
[PMM: Added missing ULL suffixes and a comment to the a15memmap[] entry]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
There is an error in functions aarch64_sync_32_to_64() and
aarch64_sync_64_to_32() with mapping of registers between AArch32 and
AArch64. This commit fixes the mapping to match the v8 ARM ARM
section D1.20.1 (table D1-77).
Signed-off-by: Sergey Sorokin <afarallax@yandex.ru>
Message-id: 1440796451-15276-1-git-send-email-afarallax@yandex.ru
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: tidied commit message a bit]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The 64-bit A64 semihosting API has some pervasive changes from
the 32-bit version:
* all parameter blocks are arrays of 64-bit values, not 32-bit
* the semihosting call number is passed in W0
* the return value is a 64-bit value in X0
Implement the necessary handling for this widening.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christopher Covington <christopher.covington@linaro.org>
Tested-by: Christopher Covington <cov@codeaurora.org>
Message-id: 1439483745-28752-7-git-send-email-peter.maydell@linaro.org
Factor out a repeated pattern in the semihosting code:
gdb_do_syscall(arm_semi_cb, "system,%s", arg0, (int)arg1+1);
/* arm_semi_cb sets env->regs[0] to the syscall return value */
return env->regs[0];
For A64 the return value will go in a different register; pull
the sequence out into its own function that passes the return
value in a static variable rather than overloading regs[0]
for the purpose, so the code will work on both A32/T32 and A64.
Note that the lack-of-synchronization bug noted in the FIXME
comment is not introduced by this commit, but was already present.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christopher Covington <christopher.covington@linaro.org>
Tested-by: Christopher Covington <cov@codeaurora.org>
Message-id: 1439483745-28752-5-git-send-email-peter.maydell@linaro.org
A spurious trailing "\n" in the gdb syscall format string used
for SYS_WRITE0 meant that gdb would reject the remote syscall,
with the effect that the output from the guest was silently dropped.
Remove the newline so that gdb accepts the packet.
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Block patches from 2015-08-24 until 2015-09-04.
# gpg: Signature made Fri Sep 4 21:02:10 2015 CEST using RSA key ID E838ACAD
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"
* mreitz/tags/pull-block-for-kevin-2015-09-04:
quorum: validate vote threshold against num_children even if read-pattern is fifo
qcow2: reorder fields in Qcow2CachedTable to reduce padding
docs: document how to configure the qcow2 L2/refcount caches
qcow2: add option to clean unused cache entries after some time
qcow2: mark the memory as no longer needed after qcow2_cache_empty()
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
We need to use threshold to check if too many write operation fails.
If threshold is larger than num children, we always get write error
event even if all write operations success.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Message-id: 55962F72.3060003@cn.fujitsu.com
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
QEMU has options to configure the size of the L2 and refcount
caches for the qcow2 format. However, choosing the right sizes for
a particular disk image is not a straightforward operation since
the ratio between the cache size and the allocated disk space is
not obvious and depends on the size of the cluster and the refcount
entries.
This document attempts to give an overview of both caches and how to
configure their sizes.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 55de928e139b1ba3f3d40fe9c6c88f30b1f36410.1438690126.git.berto@igalia.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This adds a new 'cache-clean-interval' option that cleans all qcow2
cache entries that haven't been used in a certain interval, given in
seconds.
This allows setting a large L2 cache size so it can handle scenarios
with lots of I/O and at the same time use little memory during periods
of inactivity.
This feature currently relies on MADV_DONTNEED to free that memory, so
it is not useful in systems that don't follow that behavior.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: a70d12da60433df9360ada648b3f34b8f6f354ce.1438690126.git.berto@igalia.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
After having emptied the cache, the data in the cache tables is no
longer useful, so we can tell the kernel that we are done with it. In
Linux this frees the resources associated with it.
The effect of this can be seen in the HMP commit operation: it moves
data from the top to the base image (and fills both caches), then it
empties the top image. At this point the data in that cache is no
longer needed so it's just wasting memory.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 08538b098e1faf6c92496477cf9b47a20e5aacea.1438690126.git.berto@igalia.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Currently, if a subprocess of a python test (i.e. qemu-io, qemu-img, or
qemu) receives a signal and is subsequently aborted, this is not logged.
This patch makes python tests always check the exit code of these
subprocesses, and emit a message if they have been killed.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Currently, if a qemu/qemu-io/qemu-img/qemu-nbd invocation receives a
segmentation fault, that message is invisible in most cases since the
output is generally filtered and bash suppresses the segmentation fault
notice for any but the last element of a pipe.
Most of the time, the test will then fail anyway because of missing
output, but not necessarily (as happened with test 82 recently).
Fix this by making the corresponding environment variables point to
wrapper functions which execute the respective command in a subshell.
Giving options to qemu/qemu-io/qemu-img and path names with spaces were
broken for the Python tests; this patch "accidentally" fixes that.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
While -nodefaults is set in $QEMU_OPTIONS, this is currently (wrongly)
ignored for Python iotests. In order to be prepared for when this is
fixed, we should explicitly add an IDE CD-ROM drive instead of relying
on it being created automatically.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This patch allows specifying the interface to be used for the drive, and
makes specifying a path optional (if the path is None, the "file" option
will be omitted, thus creating an empty drive).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Example:
$ ./qemu-img create -f qcow2 /tmp/t.qcow2 64M
$ ./qemu-img amend -f qcow2 -o backing_file=/tmp/t.qcow2, -o help \
/tmp/t.qcow2
This should not crash. This actually is tested by iotest 082, but not
caught due to the segmentation fault being silent (which is something
that needs to be fixed, too).
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: qemu-stable <qemu-stable@nongnu.org>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The filename given to qemu_open() in block/raw-posix.c should generally
have been processed by raw_normalize_devicepath(); unless we are only
probing (in which case the caller often checks whether the file is a
block device or not, and this property will be changed by
raw_normalize_devicepath() on NetBSD) or it is about a deprecated device
(i.e. floppy).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The default device id of hard disk on the s390 platform is "virtio0"
which differs to the "ide0-hd0" for the x86 platform. Setting id in
the drive definition, ie:"qemu -drive id=testdisk", will be the same
on all platforms.
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Bo Tu <tubo@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
when creating an image qemu-img enable us specifying the size of the
image using -o size=xx options. But when we specify an invalid size
such as a negtive size then different platform gives different result.
parse_option_size() function in util/qemu-option.c will be called to
parse the size, a cast was called in the function to cast the input
(saved as a double in the function) size to an unsigned int64 value,
when the input is a negtive value or exceeds the maximum of uint64, then
the result is undefined.
According to C99 6.3.1.4, the result of converting a floating point
number to an integer that cannot represent the (integer part of) number
is undefined. And sure enough the results are different on x86 and
s390.
C99 Language spec 6.3.1.4 Real floating and integers:
the result of this assignment/cast is undefined if the float is not
in the open interval (-1, U<type>_MAX+1).
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Signed-off-by: Bo Tu <tubo@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This patch fixes an io test suite issue that was introduced with the
commit c88930a686 'qemu-char: Permit only
a single "stdio" character device'. The option supresses the creation of
default devices such as the floopy and cdrom. Output files for test case
067, 071, 081 and 087 need to be updated to accommodate this change.
Use virtio-blk instead of virtio-blk-pci as the device driver for test
case 067. For virtio-blk-pci is the same with virtio-blk as device
driver but other platform such as s390 may not recognize the virtio-blk-pci.
The default devices differ across machines. As the qemu output often
contains these devices (or events for them, like opening a CD tray on
reset), the reference output currently is rather machine-specific.
All existing qemu tests explicitly configure the devices they're working
with, so just pass -nodefaults to qemu by default to disable the default
devices. Update the reference outputs accordingly.
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Signed-off-by: Xiao Guang Chen <chenxg@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This patch adds qemu machine type support to the io test suite.
Based on the qemu default machine type and alias of the default machine
type the reference output file can now vary from the default to a
machine specific output file if necessary. When using a machine specific
reference file if the default machine has an alias then use the alias as the output
file name otherwise use the default machine name as the output file name.
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Signed-off-by: Xiao Guang Chen <chenxg@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
qapi: Another round of fixes and cleanups
# gpg: Signature made Fri 04 Sep 2015 14:48:54 BST using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
* remotes/armbru/tags/pull-qapi-2015-09-04: (33 commits)
qapi: Generators crash when --output-dir isn't given, fix
docs/qapi-code-gen.txt: Fix QAPI schema examples
qapi: Simplify error reporting for array types
qapi: Fix errors for non-string, non-dictionary members
tests/qapi-schema: Cover non-string, non-dictionary members
tests/qapi-schema: Cover two more syntax errors
qapi: Drop one of two "simple union must not have base" checks
qapi: Generated code cleanup
qapi-commands: Drop useless initialization
qapi-commands: Don't feed output of mcgen() to mcgen() again
qapi-commands: Inline gen_marshal_output_call()
qapi-commands: Fix gen_err_check(e) for e and e != 'local_err'
qapi: Command returning anonymous type doesn't work, outlaw
qapi: Fix to reject union command and event arguments
qapi-tests: New tests for union, alternate command arguments
tests/qapi-schema: Rename tests from data- to args-
tests/qapi-schema: Restore test case for flat union base bug
qapi: Document flaws in checking of names
qapi: Document shortcoming with union 'data' branch
qapi: Document that input visitor semantics are prone to leaks
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
check_type() first checks and peels off the array type, then checks
the element type. For two out of four error messages, it takes pains
to report errors for "array of T" instead of just T. Odd. Let's
examine the errors.
* Unknown element type, e.g.
tests/qapi-schema/args-array-unknown.json:
Member 'array' of 'data' for command 'oops' uses unknown type
'array of NoSuchType'
To make sense of this, you need to know that 'array of NoSuchType'
refers to '[NoSuchType]'. Easy enough. However, simply reporting
Member 'array' of 'data' for command 'oops' uses unknown type
'NoSuchType'
is at least as easy to understand.
* Element type's meta-type is inadmissible, e.g.
tests/qapi-schema/returns-whitelist.json:
'returns' for command 'no-way-this-will-get-whitelisted' cannot
use built-in type 'array of int'
'array of int' is technically not a built-in type, but that's
pedantry. However, simply reporting
'returns' for command 'no-way-this-will-get-whitelisted' cannot
use built-in type 'int'
avoids the issue, and is at least as easy to understand.
* The remaining two errors are unreachable, because the array checking
ensures that value is a string.
Thus, reporting some errors for "array of T" instead of just T works,
but doesn't really improve things. Drop it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
We always report "should be a dictionary" then. This is misleading:
when allow_dict, it can be a dictionary or a type name string, else it
can only be a type name.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The first check ensures the second one can't trigger. Drop the first
one, because the second one is in a more logical place, and emits a
nicer error message.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Clean up white-space, brace placement, and superfluous #ifdef
QAPI_TYPES_BUILTIN_CLEANUP_DEF.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
In generated command handlers, the assignment to retval dominates its
only use. Therefore, its initialization is useless. Drop it.
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Multiple passes through mcgen() is prone to produce unwanted blank
lines, which we then combat by sprinkling .rstrip() on top. Just
don't do it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
gen_err_check() hard-codes 'local_err' instead of substituting the
argument. Currently harmless, since all callers pass either None or
'local_err'.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reproducer: with
{ 'command': 'user_def_cmd4', 'returns': { 'a': 'int' } }
added to qapi-schema-test.json, qapi-commands.py dies when it tries to
generate the command handler function
Traceback (most recent call last):
File "/work/armbru/qemu/scripts/qapi-commands.py", line 359, in <module>
ret = generate_command_decl(cmd['command'], arglist, ret_type) + "\n"
File "/work/armbru/qemu/scripts/qapi-commands.py", line 29, in generate_command_decl
ret_type=c_type(ret_type), name=c_name(name),
File "/work/armbru/qemu/scripts/qapi.py", line 927, in c_type
assert isinstance(value, str) and value != ""
AssertionError
because the return type doesn't exist.
Simply outlaw this usage, and drop or dumb down test cases accordingly.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
A command's or event's 'data' must be a struct type, given either as a
dictionary, or as struct type name.
Commit dd883c6 tightened the checking there, but not enough: we still
accept 'union'. Fix to reject it.
We may want to support union types there, but we'll have to extend
qapi-commands.py and qapi-events.py for it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
A command's 'data' must be a struct type, given either as a
dictionary, or as struct type name.
Existing test case data-int.json covers simple type 'int'. Add test
cases for type names referring to union and alternate types.
The latter is caught (good), but the former is not (bug).
Events have the same problem, but since they get checked by the same
code, we don't bother to duplicate the tests.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Since every schema entity has 'data', the data- prefix conveys no
information. These tests actually exercise commands. Only commands
have arguments, so change the prefix to to args-.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
We don't actually enforce our "other than downstream extensions [...],
all names should begin with a letter" rule. Add a FIXME.
We should reject names that differ only in '_' vs. '.' vs. '-',
because they're liable to clash in generated C. Add a FIXME.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Most functions that can return a pointer or set an Error ** value
are decent enough to guarantee a NULL return when reporting an error.
Not so with our generated qapi visitor functions. If the caller
is not careful to clean up partially-allocated objects on error,
then the caller suffers a memory leak.
Properly fixing it is probably complex enough to save for a later
day, so merely document it for now.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1438295587-19069-1-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
When event FOO's 'data' is a struct with a base, we consider only the
struct's direct members, and ignore its base. The generated
qapi_event_send_foo() doesn't take arguments for base members.
No such events currently exist in the QMP schema.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
We generate a declaration, but no definition.
The QMP schema has two: Qcow2OverlapChecks and BlockdevRef. Neither
visit_type_Qcow2OverlapChecksKind() nor visit_type_BlockdevRefKind()
is actually used.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The generated code passes mangled schema names to visit_type_enum()
and union's visit_start_struct(). Fix it to pass the names
unadulterated, like we do everywhere else.
Only qapi-schema-test.json actually has names where this makes a
difference: enum __org.qemu_x-Enum, flat union __org.qemu_x-Union2,
simple union __org.qemu_x-Union1 and its implicit enum
__org.qemu_x-Union1Kind.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Use set because that's what it is. While there, rename to
implicit_structs_seen.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The visit_type_implicit_FOO() are generated on demand, right before
their first use. Used by visit_type_STRUCT_fields() when STRUCT has
base FOO, and by visit_type_UNION() when flat UNION has member a FOO.
If the schema defines FOO after its first use as struct base or flat
union member, visit_type_implicit_FOO() calls
visit_type_implicit_FOO() before its definition, which doesn't
compile.
Rearrange qapi-schema-test.json to demonstrate the bug.
Fix by generating the necessary forward declaration.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The struct generated for a flat union is weird: the members of its
base are at the end, except for the union tag, which is at the
beginning.
Example: qapi-schema-test.json has
{ 'struct': 'UserDefUnionBase',
'data': { 'string': 'str', 'enum1': 'EnumOne' } }
{ 'union': 'UserDefFlatUnion',
'base': 'UserDefUnionBase',
'discriminator': 'enum1',
'data': { 'value1' : 'UserDefA',
'value2' : 'UserDefB',
'value3' : 'UserDefB' } }
We generate:
struct UserDefFlatUnion
{
EnumOne enum1;
union {
void *data;
UserDefA *value1;
UserDefB *value2;
UserDefB *value3;
};
char *string;
};
Change to put all base members at the beginning, unadulterated. Not
only is this easier to understand, it also permits casting the flat
union to its base, if that should become useful.
We now generate:
struct UserDefFlatUnion
{
/* Members inherited from UserDefUnionBase: */
char *string;
EnumOne enum1;
/* Own members: */
union { /* union tag is @enum1 */
void *data;
UserDefA *value1;
UserDefB *value2;
UserDefB *value3;
};
};
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
A flat union's tag member gets renamed to 'kind' in the generated
code. Breaks when another member named 'kind' exists.
Example, adapted from qapi-schema-test.json:
{ 'struct': 'UserDefUnionBase',
'data': { 'kind': 'str', 'enum1': 'EnumOne' } }
We generate:
struct UserDefFlatUnion
{
EnumOne kind;
union {
void *data;
UserDefA *value1;
UserDefB *value2;
UserDefB *value3;
};
char *kind;
};
Kill the silly rename.
Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
gen_sync_call()'s parameter indent is useless: gen_sync_call() uses it
only as optional argument for push_indent() and pop_indent(), their
default is four, and gen_sync_call()'s only caller passes four. Drop
the parameter.
gen_visitor_input_containers_decl()'s parameter obj is always
"QOBJECT(args)". Use that, and drop the parameter.
Drop unused parameters of gen_marshal_output(),
gen_marshal_input_decl(), generate_visit_struct_body(),
generate_visit_list(), generate_visit_enum(), generate_declaration(),
generate_enum_declaration(), generate_decl_enum().
Drop unused variables in generate_event_enum_lookup(),
generate_enum_lookup(), generate_visit_struct_fields(), check_event().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
qapi-event.py breaks when you ask for a funny prefix like '@'.
Protect it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Use c_name() instead of ad hoc code. Doesn't upcase the -p prefix,
which is an improvement in my book. Unbreaks prefix containing '.',
but other funny characters remain broken. To be fixed next.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The guards around built-in declarations lose their _H. It never made
much sense anyway.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Commit 05dfb26 added eatspace stripping to mcgen(). Move it to
cgen(), just in case somebody gets tempted to use cgen() directly
instead of via mcgen().
cgen() indents blank lines. No such lines get generated right now,
but fix it anyway.
We use triple-quoted strings for program text, like this:
'''
Program text
any number of lines
'''
Keeps the program text relatively readable, but puts an extra newline
at either end. mcgen() "fixes" that by dropping the first and last
line outright. Drop only the newlines.
This unmasks a bug in qapi-commands.py: four quotes instead of three.
Fix it up.
Output doesn't change
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
It's idempotent.
While there, update examples to current code.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Upstream supports named configurations now and ships with
settings for qemu. Use them, drop our config header copying.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
We had build problems due to the git version checking in the ipxe build
system in the past. Don't remember the details, but the problem seems
to be gone now, so lets remove the workaround.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
[ most likely ipxe commit 6153c09c41034250408f3596555fcaae715da46c:
[build] Set GITVERSION only if there is a git repository ]
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
git shortlog
============
Alex Williamson (1):
[dhcp] Extract timing parameters out to config/dhcp.h
Bernd Wiebelt (1):
[tg3] Add support for BCM57766
Christian Hesse (3):
[intel] Add PCI device IDs for Intel I218-LM and I218-V
[build] Add missing "const" qualifiers
[ath9k] Remove confusing logic inversion in an ANI variable
Christian Nilsson (1):
[bios] Add ANSI blink attribute
Daniel Pieczko (1):
[prefix] Use correct register for KEEP_IT_REAL physical address conversion
Ed Swierk (1):
[intel] Update PCI device IDs for Intel 82599 and X540 10G NICs
Fabrice Bacchella (2):
[efi] Improve NII driver logging
[efi] Work around bugs in Emulex NII driver
Laszlo Ersek (1):
[virtio] Downgrade per-iobuf debug messages to DBGC2
Michael Brown (284):
[device] Provide a driver-private data field for root devices
[iobuf] Add iob_split() to split an I/O buffer into portions
[rndis] Add generic RNDIS device abstraction
[hyperv] Add support for Hyper-V hypervisor
[hyperv] Add support for VMBus devices
[hyperv] Add support for NetVSC paravirtual network devices
[rndis] Send RNDIS_INITIALISE_MSG
[rndis] Send RNDIS_HALT_MSG
[hyperv] Tear down NetVSC RX buffer GPADL after closing VMBus device
[rndis] Clear receive filter when closing the device
[hyperv] Receive all VMBus messages in a poll
[hyperv] Increase TX ring size
[hyperv] Assume that VMBus xfer page ranges correspond to RNDIS messages
[rndis] Ignore start-of-day RNDIS_INDICATE_STATUS_MSG with status 0x40020006
[hyperv] Tidy up debug output
[hyperv] Require support for VMBus version 3.0 or newer
[build] Include Hyper-V driver in the all-drivers build
[pci] Allow drivers to specify a PCI class
[romprefix] Ensure UNDI loader can be included by all ROM types
[usb] Add basic support for USB devices
[usb] Add basic support for USB hubs
[usb] Add support for xHCI host controllers
[ncm] Add support for CDC-NCM USB Ethernet devices
[usb] Report xHCI host controller events
[ncm] Use large multi-packet buffers by default
[tftp] Explicitly abort connection whenever parent interface is closed
[uri] Allow tftp_uri() to construct a URI with a custom port
[pxe] Use tftp_uri() to construct PXE TFTP URIs
[pxe] Maintain a queue for received PXE UDP packets
[ncm] Reserve headroom in received packets
[usb] Try multiple USB device configurations
[usb] Handle CDC union functional descriptors
[usb] Parse endpoint descriptor bInterval field
[usb] Allow usb_stream() to enforce a terminating short packet
[ecm] Add support for CDC-ECM USB Ethernet devices
[xhci] Delay after (possibly) forcing port link state to RxDetect
[build] Move branding information to config/branding.h
[build] Use PRODUCT_SHORT_NAME for end-user visible strings
[build] Allow product URI to be customised via config/branding.h
[build] Allow error message URI to be customised via config/branding.h
[build] Allow command help text URI to be customised via config/branding.h
[build] Allow setting help text URI to be customised via config/branding.h
[build] Allow product tag line to be customised via config/branding.h
[rndis] Add rndis_rx_err()
[usb] Handle port status changes received after failing to find a driver
[efi] Disallow R_X86_64_32 relocations
[build] Apply the "-fno-PIE -nopie" workaround only to i386 builds
[usb] Provide generic framework for refilling receive endpoints
[usb] Use generic refill framework for USB hub interrupt endpoints
[ecm] Use generic refill framework for bulk IN and interrupt endpoints
[ncm] Use generic refill framework for bulk IN and interrupt endpoints
[libc] Remove unused string functions
[libc] Rewrite string functions
[test] Add self-tests for more string functions
[test] Add constant-length memset() self-tests
[libc] Reduce size of memset()
[usb] Add generic USB network device framework
[ecm] Use generic USB network device framework
[ncm] Use generic USB network device framework
[timer] Rewrite the 8254 Programmable Interval Timer support
[xhci] Leak memory if controller fails to disable slot
[xhci] Abort commands on timeout
[test] Add IPv4 self-tests
[legal] Add missing copyright header to net/ipv4.c
[ipv4] Rewrite inet_aton()
[libc] Rewrite strtoul()
[hyperv] Check for required features
[prefix] Use .bss16 as temporary stack space for calls to install_block
[zbin] Use LZMA compression
[zbin] Perform extra normalisation after completing decompression
[prefix] Call decompressor in flat real mode when DEBUG=libprefix is enabled
[zbin] Allow decompressor to generate debug output via BIOS console
[zbin] Fix check for existence of most recent output byte
[zbin] Remove now-unused unnrv2b.S decompressor
[legal] Update GPLv2 licence text
[legal] Include full licence text for all GPL2_OR_LATER files
[mucurses] Add missing FILE_LICENCE declarations
[legal] Add support for the Unmodified Binary Distribution Licence
[legal] Add UBDL relicensing tool
[legal] Relicense files under GPL2_OR_LATER_OR_UBDL
[legal] Relicense files under GPL2_OR_LATER_OR_UBDL
[legal] Relicense files under GPL2_OR_LATER_OR_UBDL
[legal] Relicense files under GPL2_OR_LATER_OR_UBDL
[libc] Rewrite unrelicensable portions of stddef.h
[libc] Rewrite unrelicensable portions of ctype.h
[libc] Rewrite setjmp() and longjmp()
[libc] Rewrite byte-swapping code
[elf] Rewrite ELF header
[list] Relicense list.h
[iscsi] Rewrite unrelicensable portions of iscsi.c
[pci] Remove outdated and mostly-unused pci_ids.h file
[pci] Rewrite unrelicensable portions of pci.h
[settings] Use list_first_entry() when unregistering child settings
[settings] Rewrite unrelicensable portions of settings.c
[menu] Abstract out the generic concept of a jump scroller
[settings] Use generic jump scrolling abstraction
[malloc] Move valgrind headers out of arch/x86
[malloc] Rewrite unrelicensable portions of malloc.c
[build] Remove unused IMPORT_SYMBOL() and EXPORT_SYMBOL() macros
[build] Remove unused __keepme macro
[pxe] Remove obsolete references to pxeparent_dhcp
[build] Remove obsolete and unused portions of config.c
[build] Use REQUIRE_OBJECT() to drag in per-object configuration
[build] Fix the REQUIRE_SYMBOL mechanism
[i386] Move real_to_user() to realmode.h
[linux] Rewrite headers included in all builds
[retry] Rewrite unrelicensable portions of retry.c
[retry] Colourise debug output
[legal] Relicense files under GPL2_OR_LATER_OR_UBDL
[xhci] Enable USB3 ports on Intel PCH8/PCH9 controllers
[xhci] Undo PCH-specific quirk fixes when removing device
[xen] Set the "feature-rx-notify" flag for netfront devices
[http] Abstract out HTTP Digest hash algorithm operations
[http] Support MD5-sess Digest authentication
[dm96xx] Add driver for Davicom DM96xx USB Ethernet NICs
[legal] Relicense Davicom DM96xx drivers
[mii] Add generic mii_check_link() function
[smsc75xx] Add driver for SMSC/Microchip LAN75xx USB Ethernet NICs
[legal] Relicense files under GPL2_OR_LATER_OR_UBDL
[tcp] Implement support for TCP Selective Acknowledgements (SACK)
[smsc75xx] Move RX FIFO overflow message to DBGLVL_EXTRA
[tcpip] Fix dubious calculation of min_port
[libc] Add ffs(), ffsl(), and ffsll()
[usb] Add the concept of a USB bus maximum transfer size
[ncm] Respect maximum transfer size of the bus
[usb] Add functions for manual device address assignment
[xhci] Forcibly disable SMIs if BIOS fails to release ownership
[autoboot] Match against parent devices when matching by bus type and location
[usb] Add config/usb.h for USB configuration options
[xhci] Do not release ownership back to BIOS when booting an OS
[ehci] Add support for EHCI host controllers
[netdevice] Add missing bus types to netdev_fetch_bustype()
[usb] Fix USB timeouts to match specification
[libprefix] Fix building on 64-bit FreeBSD 8.4
[xhci] Ring doorbell as part of endpoint reset
[usb] Reset endpoints without waiting for a new transfer to be enqueued
[usb] Add clear_tt() hub method to clear transaction translator buffer
[usb] Clear transaction translator buffers when applicable
[ehci] Support USB1 devices attached via transaction translators
[usb] Improve debug messages for failed control transactions
[xhci] Support USB1 devices attached via transaction translators
[libc] Fix typo in longjmp()
[libc] Add x86_64 versions of setjmp() and longjmp()
[test] Add setjmp()/longjmp() self-tests
[test] Simplify digest algorithm self-tests
[crypto] Add SHA-224 algorithm
[crypto] Add SHA-512 algorithm
[crypto] Add SHA-384 algorithm
[crypto] Add SHA-512/256 algorithm
[crypto] Add SHA-512/224 algorithm
[efi] Ensure drivers are disconnected when ExitBootServices() is called
[peerdist] Add support for decoding PeerDist Content Information
[xhci] Always reset root hub ports
[romprefix] Allow autoboot device filter to be disabled
[util] Add ability to dump PCI device ID list
[efi] Add EFI entropy source
[efi] Add EFI time source
[efi] Provide a dummy data block in nii_initialise()
[efi] Poll media status only if advertised as supported
[efi] Poll for TX completions only when there is an outstanding TX buffer
[efi] Use the EFI_RNG_PROTOCOL as an entropy source if available
[eepro100] Remove duplicate PCI_ROM() line
[prism2] Remove duplicate PCI_ROM() lines
[build] Allow building PCI ROMs with device ID lists
[build] Fix compiler warning on OpenBSD 5.7
[build] Work around binutils quirk on OpenBSD 5.7
[build] Use a single call to parserom.pl to speed up building
[intel] Report any unexpected interrupt causes
[intel] Force RX polling on VMware emulated 82545em
[realtek] Do not attempt to access EEPROM on RTL8169 chips
[rtl818x] Obviate RTL_ROM() hack
[build] Construct all-drivers list based on driver class
[test] Include IPv6 support when performing settings self-tests
[base16] Add buffer size parameter to base16_encode() and base16_decode()
[base64] Add buffer size parameter to base64_encode() and base64_decode()
[settings] Add "base64" setting type
[vram] Add "vram" built-in setting to dump video RAM
[usb] Include setup packet within I/O buffer for message transfers
[pci] Provide PCI_CLASS() to calculate a scalar PCI class value
[usb] Detect missed disconnections
[usb] Maintain a list of all USB buses
[usb] Maintain single lists of halted endpoints and changed ports
[ehci] Poll child companion controllers after disowning port
[usb] Add find_usb_bus_by_location() helper function
[ehci] Allow UHCI/OHCI controllers to locate the EHCI companion controller
[uhci] Add support for UHCI host controllers
[usb] Provide usb_endpoint_name() for use by host controller drivers
[xhci] Use meaningful device names in debug messages
[ehci] Use meaningful device names in debug messages
[uhci] Use meaningful device names in debug messages
[ipv6] Disambiguate received ICMPv6 errors
[usb] Add USB_INTERRUPT_OUT internal type
[usb] Add generic USB human interface device (HID) framework
[usb] Add basic support for USB keyboards
[usb] Do not call usb_hotplug() when registering a new hub
[usb] Always clear recorded disconnections after performing hotplug actions
[intel] Expose intel_diag() for use by other Intel NIC drivers
[intel] Allow for the use of advanced TX descriptors
[intel] Add support for mailbox used by virtual functions
[intel] Add intelxvf driver for Intel 10 GigE virtual function NICs
[int13con] Add basic ability to log to a local disk via INT 13
[intel] Add intelxvf_stats() to dump packet statistics registers
[intel] Fix operation when physical function has jumbo frames enabled
[neighbour] Return success when deferring a packet
[xhci] Fix length of allocated slot array
[build] Fix .ids.o creation for drivers not in the all-drivers build
[xhci] Fix comparison of signed and unsigned integers
[ipoib] Fix REMAC cache discarder
[xhci] Record device-specific quirks in xHCI device structure
[xhci] Ignore invalid protocol speed ID values on Intel Skylake platforms
[pci] Use flat real mode to call INT 1a,b101
[tcp] Do not shrink window when discarding received packets
[mromprefix] Report a dummy size at offset 0x02 of .mrom payload
[ethernet] Add minimal support for receiving LLC frames
[netdevice] Add a generic concept of a "blocked link"
[stp] Add support for detecting Spanning Tree Protocol non-forwarding ports
[stp] Fix interpretaton of hello time
[dhcp] Defer discovery if link is blocked
[pxe] Always reconstruct packet for PXENV_GET_CACHED_INFO
[serial] Add general abstraction of a 16550-compatible UART
[gdb] Use new UART abstraction in GDB serial transport
[serial] Use new UART abstraction in serial console driver
[ipoib] Mark REMAC cache as expensive
[ipoib] Attempt to generate ARPs as needed to repopulate REMAC cache
[gdb] Allow gdbstub to be started on an arbitrary serial port
[xen] Wait for and clear XenStore event before receiving data
[tcp] Gracefully close connections during shutdown
[ipoib] Transmit multicast packets as broadcasts
[efi] Fix receive and transmit completion reporting
[efi] Allow user experience to be downgraded
[build] Add named configuration for qemu
[tcp] Ensure FIN is actually sent if connection is closed while idle
[fault] Generalise NETDEV_DISCARD_RATE fault injection mechanism
[fault] Add inject_corruption() to randomly corrupt data
[profile] Add profile_custom() for profiling with arbitrary time units
[interface] Add intf_poke() helper
[xfer] Use intf_poke() to implement xfer_window_changed()
[xfer] Add xfer_check_order() utility function
[xferbuf] Generalise to handle umalloc()-based buffers
[xferbuf] Add xfer_buffer() to provide direct access to underlying buffer
[downloader] Use generic data-transfer buffer mechanism
[downloader] Provide direct access to the underlying data transfer buffer
[build] Fix compiler warnings on some gcc versions
[crypto] Add bit-rotation functions for 8-bit and 16-bit values
[802.11] Use correct SHA1_DIGEST_SIZE constant name
[crypto] Add ECB block cipher mode (for debug and self-tests only)
[test] Generalise cipher tests and use okx()
[test] Define shortcuts for frequently-used NIST AES test vectors
[test] Add NIST self-tests for AES128 and AES256 in ECB mode
[crypto] Replace AES implementation
[test] Add NIST self-tests for AES192 in ECB and CBC modes
[crypto] Remove AXTLS headers
[build] Fix strict-aliasing warning on older gcc versions
[ipv6] Treat a missing network device name as "netX"
[netdevice] Avoid using zero as a network device index
[ipv4] Redefine IP address constants to avoid unnecessary byte swapping
[ipv4] Allow IPv4 socket addresses to include a scope ID
[iscsi] Add missing "break" statements
[netdevice] Allow network devices to disclaim IRQ support at runtime
[peerdist] Include trimmed range within content information block
[peerdist] Add support for constructing and decoding discovery messages
[peerdist] Add support for constructing and decoding retrieval messages
[pool] Add a generic concept of a pooled connection
[linebuf] Support buffering of multiple lines
[elf] Reject ELFBoot images requiring virtual addressing
[comboot] Avoid dragging in serial console support unconditionally
[serial] Check for UART existence in uart_select()
[tls] Do not access beyond the end of a 24-bit integer
[tls] Report supported signature algorithms in ClientHello
[crypto] Support SHA-{224,384,512} in X.509 certificates
[efi] Hold off watchdog timer while running
[efi] Add missing "ULL" suffix on 64-bit constant
[block] Add generic block device translator
[http] Rewrite HTTP core to support content encodings
[peerdist] Add segment discovery mechanism
[peerdist] Add individual block download mechanism
[peerdist] Add block download multiplexer
[peerdist] Add support for PeerDist (aka BranchCache) HTTP content encoding
[dhcp] Allow pseudo-DHCP servers to use pseudo-identifiers
[dhcp] Ignore ProxyDHCPACKs without PXE options
[pxe] Warn about PXE NBPs that may be EFI executables
[test] Allow self-tests to report exit status when running under Linux
[image] Detect image type when image is first registered
[autoboot] Display image information as part of the default control flow
Olaf Hering (1):
[build] Sort objects in blib.a
Robin Smidsrød (2):
[vbox] Enable some more features now that we have LZMA compression
[build] Rewrite parserom.pl to support multiple source files
Thomas Miletich (1):
[intel] Add PCI ID for I218-LM
Tufan Karadere (1):
[crypto] Add ASN.1 OIDs for sha{224,384,512}WithRsaEncryption
Wissam Shoukair (2):
[comboot] Implement INT22,0x000c
[ipoib] Fix a race when chain-loading undionly.kpxe in IPoIB
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
cmpbge emulation improvements
# gpg: Signature made Wed 02 Sep 2015 20:25:10 BST using RSA key ID 4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg: aka "Richard Henderson <rth@redhat.com>"
# gpg: aka "Richard Henderson <rth@twiddle.net>"
* remotes/rth/tags/pull-axp-20150902:
target-alpha: Special case cmpbge with zero
target-alpha: Rewrite helper_cmpbge using bit tests
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Routines to save/load guest storage keys are provided. register_savevm is
called to register them as migration handlers.
We prepare the protocol to support more complex parameters. So we will
later be able to support standby memory (having empty holes), compression
and "state live migration" like done for ram.
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Provide a dump-skeys qmp command to allow the end user to dump storage
keys. This is useful for debugging problems with guest storage key support
within Qemu and for guest operating system developers.
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
s390 guest initialization is modified to make use of new s390-storage-keys
device. Old code that globally allocated storage key array is removed.
The new device enables storage key access for kvm guests.
Cache storage key QOM objects in frequently used helper functions to avoid a
performance hit every time we use one of these functions.
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
A new QOM style device is provided to back guest storage keys. A special
version for KVM is created, which handles the storage key access via
KVM_S390_GET_SKEYS and KVM_S390_SET_SKEYS ioctl.
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
# gpg: Signature made Wed 02 Sep 2015 17:14:40 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/net-pull-request:
ne2000: Drop ne2000_can_receive
vmxnet3: Drop net_vmxnet3_info.can_receive
rtl8139: Do not consume the packet during overflow in standard mode.
rtl8139: Fix receive buffer overflow check
rtl8139: use ldl/stl wrapper for unaligned 32-bit access
rtl8139: use net/eth.h macros instead of custom macros
rtl8139: remove duplicate net/eth.h definitions
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Wed 02 Sep 2015 17:01:33 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/block-pull-request:
block: more check for replaced node
MAINTAINERS: add responsible person for Parallels format driver
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In ffc6372851, we swapped the guest
base to the address base register from the address index register.
Except that 31 in the base slot is SP not XZR, so we need to be
more intelligent about which reg gets placed in which slot.
Cc: qemu-stable@nongnu.org (v2.4.0)
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reported-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
We use mirror+replace to fix quorum's broken child. bs/s->common.bs
is quorum, and to_replace is the broken child. The new child is target_bs.
Without this patch, the replace node can be any node, and it can be
top BDS with BB, or another quorum's child. We just check if the broken
child is part of the quorum BDS in this patch.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Message-id: 55A86486.1000404@cn.fujitsu.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Denis has spent 6 years working with this format in Parallels and QEMU
code was rewritten almost completely by his. Thus it would be quite
natural to add him as a maintainer and point of contact.
Patches are going to flow though Stefan's tree.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Message-id: 1440179056-12934-1-git-send-email-den@openvz.org
CC: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
ne2000_receive already checks the same conditions and drops the packet
if it's not ready, removing the .can_receive callback avoids the
necessity to add explicit flushes when the conditions turn true (which
is required by the new semantics of .can_receive since 6e99c63
"net/socket: Drop net_socket_can_send").
Plus the "return 1" if E8390_STOP is also suspicious.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Commit 6e99c63 ("net/socket: Drop net_socket_can_send") changed the
semantics around .can_receive for sockets to now require the device to
flush queued pkts when transitioning to a .can_receive=true state. But
it's OK to drop incoming packets when the link is not active.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
When operation in standard mode, we currently return the size
of packet during buffer overflow. This consumes the overflow
packet. Return 0 instead so we can re-process the overflow packet
when we have room.
This fixes issues with lost/dropped fragments of large messages.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1441121206-6997-3-git-send-email-vyasevic@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
rtl8139_do_receive() tries to check for the overflow condition
by making sure that packet_size + 8 does not exceed the
available buffer space. The issue here is that RxBuffAddr,
used to calculate available buffer space, is aligned to a
a 4 byte boundry after every update. So it is possible that
every packet ends up being slightly padded when written
to the receive buffer. This padding is not taken into
account when checking for overflow and we may end up missing
the overflow condition can causing buffer overwrite.
This patch takes alignment into consideration when
checking for overflow condition.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1441121206-6997-2-git-send-email-vyasevic@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Eliminate the following "custom" macros since they are just duplicates
of net/eth.h macros under a different name:
ETHER_ADDR_LEN -> ETH_ALEN
ETH_P_8021Q -> ETH_P_VLAN
IP_HEADER_LENGTH -> IP_HDR_GET_LEN
TCP_FLAG_FIN -> TH_FIN
TCP_FLAG_PUSH -> TH_PUSH
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1438604157-29664-3-git-send-email-stefanha@redhat.com
qemu-ga patch queue
* add config file dump/load support for qemu-ga
* various w32 build fixes, particularly WRT to msi package creation
* fixes for msi installer
* w32 support for guest-set-user-password
v2:
* replaced g_list_free_full with g_list_foreach to maintain glib 2.22
compatibility
# gpg: Signature made Tue 01 Sep 2015 19:34:15 BST using RSA key ID F108B584
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>"
# gpg: aka "Michael Roth <mdroth@utexas.edu>"
# gpg: aka "Michael Roth <mdroth@linux.vnet.ibm.com>"
* remotes/mdroth/tags/qga-pull-2015-09-01-v2-tag: (26 commits)
Makefile: qemu-ga: fix msi target error message
build: qemu-ga: fix VSS dependencies
configure: qemu-ga: explicitly enable qemu-ga MSI support when probed
configure: qemu-ga: move MSI installer probe after qga probe
qemu-ga: implement win32 guest-set-user-password
qga: start a man page
qga: add --dump-conf option
qga: add an optional qemu-ga.conf system configuration
qga: free a bit more
qga: move agent run in a separate function
qga: fill default options in main()
qga: move option parsing to separate function
qga: copy argument strings
qga: rename 'path' to 'channel_path'
qga: make split_list() return allocated strings
qga: move string split in separate function
qga: use exit() when parsing options
qga: misc spelling
configure: qemu-ga: report MSI install support in summary
qemu-ga: Fixed paths issue with MSI build
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
'msi' target reports error if we attempt to use it when QEMU hasn't
been ./configure'd to enable it. The parenthesis cause an interpreter
error if we don't enclose the error in quotes.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Currently VSS dll/tlb files for use in w32 builds are only built as a
result of having been added to the general 'tools' target alongside
qemu-ga. This is fine for default make target, but if we build
qemu-ga directly via `make qemu-ga.exe`, the VSS files are not
created.
Fix this by moving the VSS dependencies to qemu-ga.exe directly.
With this move we can move the VSS files back out of 'tools',
and drop the extra handling from MSI target in Makefile.
Now we can build qemu-ga MSI package with:
./configure ...
make qemu-ga.exe
make msi
or simply:
./configure ...
make msi
and no longer need to do a full build beforehand.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Currently, if we don't explicitly disable support for MSI installer
via --disable-guest-agent-msi, the configure variable that tracks
the flag, 'guest_agent_msi', never gets set unless one of the probes
fails. Subsequent code then treats this unset value the same as if it
were a "yes" value (via != "no" style checks).
Instead, set the default "yes" value explicitly after the probes, then
make subsequent code expect the values to be set.
This makes it easier to report on whether or not MSI support was
enabled via probe by looking at the ./configure summary.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
MSI probe assumes that qemu-ga support has been probed already, but in
cases where --enable-guest-agent/--disable-guest-agent have not been
passed to configure, qemu-ga support may end up getting enabled later,
as is the case with w32 builds. This leads to MSI probe prematurely
reporting error due to lack of qemu-ga support.
Fix this by moving MSI installer probe after the final qga probes.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Use NetUserSetInfo() to set the user password.
This function is notoriously known to be problematic for users with EFS
encrypted files. But the alternative, NetUserChangePassword() requires
the old password. Nevertheless, The EFS file should be recovered by
changing back to the old password.
Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This new option allows to review the agent configuration,
and ease the task of writing a configuration file.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
* removed unecessary keyfile != NULL prior to free
* documented --dump-conf is qemu-ga --help output
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Learn to configure the agent with a system configuration.
This may simplify command-line handling, especially when the blacklist
is long.
Among the other benefits, this may standardize the configuration of an
init service (instead of distro-specific init keys/files)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
* removed unecessary keyfile != NULL prior to free
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Once the options are populated, move the running state to
a run_agent() function.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
* fixed up an s/ga_state/s/ artifact causing segfault
* replaced g_list_free_full with g_list_foreach to maintain glib
2.22 compatibility
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Following patch will return allocated strings, so we must correctly
initialize alloc & free them. The nice side effect is that we no longer
have to check for "fixed_state_dir" to call ga_install_service() with a
NULL state dir. The default values are set after parsing the command
line options.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Currently we need to examine config-host.mak to determine whether
options/probes for MSI package generation had desired result. Report
this more prominently in ./configure summary as we do with other
guest agent configure options.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Previously, if building out-of-tree, the MSI build would fail since
it wasn't able to find the needed files.
Signed-off-by: Leonid Bloch <leonid@daynix.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
* fixed up commit msg formating
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Previously, running the .msi would unregister the QEMU GA VSS service if QEMU GA was already installed on the machine, and then register it only if QEMU GA was NOT previously installed. This behavior caused the service to be registered only after the INITIAL installation, and any subsequent run of the .msi (to redo, repair, or upgrade the installation) ended in the service being unregistered.
Now, the VSS service is still unregistered if QEMU GA is already installed (so that a fix or an update could be performed) but then it is registered again (if the GA is not being uninstalled) thus finishing the repair/upgrade correctly. Additionally, downgrading is now prevented. If a user would like to downgrade a version, he/she must uninstall the newer version first.
Signed-off-by: Leonid Bloch <leonid@daynix.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Fix a capitalization error in the OS X build instructions;
this was picked up in review of commit b352153f5f and intended to be
corrected before I applied it, but I accidentally didn't include it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
qemu-doc.texi: Add information on compiling source code on Mac OS X
Add information to the documentation on how to build QEMU
on Mac OS X.
Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: fixed a minor capitalization error]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
tci patch queue
# gpg: Signature made Wed 26 Aug 2015 19:51:07 BST using RSA key ID 677450AD
# gpg: Good signature from "Stefan Weil <sw@weilnetz.de>"
# gpg: aka "Stefan Weil <stefan.weil@weilnetz.de>"
# gpg: aka "Stefan Weil <stefan.weil@bib.uni-mannheim.de>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 4923 6FEA 75C9 5D69 8EC2 B78A E08C 21D5 6774 50AD
* remotes/weil/tags/pull-tci-20150826:
exec-all: Translate TCI return addresses backwards too
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This subtraction of return addresses applies directly to TCI as well as
host-TCG. This fixes Linux boots for at least Microblaze, CRIS, ARM and
SH4 when using TCI.
[sw: Removed indentation for preprocessor statement]
[sw: The patch also fixes Linux boot for x86_64]
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
The _cmp_bytes variable added by commit "bea60dd ui/vnc: fix potential
memory corruption issues" can become negative. Result is (possibly
exploitable) memory corruption. Reason for that is it uses the stride
instead of bytes per scanline to apply limits.
For the server surface is is actually fine. vnc creates that itself,
there is never any padding and thus scanline length always equals stride.
For the guest surface scanline length and stride are typically identical
too, but it doesn't has to be that way. So add and use a new variable
(guest_ll) for the guest scanline length. Also rename min_stride to
line_bytes to make more clear what it actually is. Finally sprinkle
in an assert() to make sure we never use a negative _cmp_bytes again.
Reported-by: 范祚至(库特) <zuozhi.fzz@alibaba-inc.com>
Reviewed-by: P J P <ppandit@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Now we have the ability to flush the TLB only for specific MMU indexes,
update the AArch64 TLB maintenance instruction implementations to only
flush the parts of the TLB they need to, rather than doing full flushes.
We take the opportunity to remove some duplicate functions (the per-asid
tlb ops work like the non-per-asid ones because we don't support
flushing a TLB only by ASID) and to bring the function names in line
with the architectural TLBI operation names.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1439548879-1972-4-git-send-email-peter.maydell@linaro.org
Guest CPU TLB maintenance operations may be sufficiently
specialized to only need to flush TLB entries corresponding
to a particular MMU index. Implement cputlb functions for
this, to avoid the inefficiency of flushing TLB entries
which we don't need to.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1439548879-1972-2-git-send-email-peter.maydell@linaro.org
Apply the correct conditions in the ats_access() function for
the ATS12NSO* address translation operations:
* succeed at EL2 or EL3
* normal UNDEF trap from NS EL1
* trap to EL3 from S EL1 (only possible if EL3 is AArch64)
(This change means they're now available in our EL3-supporting
CPUs when they would previously always UNDEF.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1437751263-21913-5-git-send-email-peter.maydell@linaro.org
Some coprocessor register access functions need to be able
to report "trap to EL3 with an 'uncategorized' syndrome";
add the necessary CPAccessResult enum and handling for it.
I don't currently know of any registers that need to trap
to EL2 with the 'uncategorized' syndrome, but adding the
_EL2 enum as well is trivial and fills in what would
otherwise be an odd gap in the handling.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1437751263-21913-4-git-send-email-peter.maydell@linaro.org
Wire up the AArch64 EL2 and EL3 address translation operations
(AT S12E1*, AT S12E0*, AT S1E2*, AT S1E3*), and correct some
errors in the ats_write64() function in previously unused code
that would have done the wrong kind of lookup for accesses from
EL3 when SCR.NS==0.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1437751263-21913-3-git-send-email-peter.maydell@linaro.org
queued tcg patches
# gpg: Signature made Mon 24 Aug 2015 19:37:15 BST using RSA key ID 4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg: aka "Richard Henderson <rth@redhat.com>"
# gpg: aka "Richard Henderson <rth@twiddle.net>"
* remotes/rth/tags/pull-tcg-20150824:
linux-user: remove useless macros GUEST_BASE and RESERVED_VA
linux-user: remove --enable-guest-base/--disable-guest-base
tcg/aarch64: Use softmmu fast path for unaligned accesses
tcg/s390: Use softmmu fast path for unaligned accesses
tcg/ppc: Improve unaligned load/store handling on 64-bit backend
tcg/i386: use softmmu fast path for unaligned accesses
tcg: Remove tcg_gen_trunc_i64_i32
tcg: Split trunc_shr_i32 opcode into extr[lh]_i64_i32
tcg: update README about size changing ops
tcg/optimize: add optimizations for ext_i32_i64 and extu_i32_i64 ops
tcg: implement real ext_i32_i64 and extu_i32_i64 ops
tcg: don't abuse TCG type in tcg_gen_trunc_shr_i64_i32
tcg: rename trunc_shr_i32 into trunc_shr_i64_i32
tcg/optimize: allow constant to have copies
tcg/optimize: track const/copy status separately
tcg/optimize: add temp_is_const and temp_is_copy functions
tcg/optimize: optimize temps tracking
tcg/optimize: fix constant signedness
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
All tcg host architectures now support the guest base and as
there is no real performance lost, it can be always enabled.
Anyway, guest base use can be disabled lively by setting guest
base to 0.
CONFIG_USE_GUEST_BASE is defined as (USE_GUEST_BASE && USER_ONLY),
it should have to be replaced by CONFIG_USER_ONLY in non CONFIG_USER_ONLY
parts, but as some other parts are using !CONFIG_SOFTMMU I have chosen to
use !CONFIG_SOFTMMU instead.
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1440373328-9788-2-git-send-email-laurent@vivier.eu>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Currently, we get to the slow path for any unaligned access in the
backend, because we effectively preserve the bottom address bits
below the alignment requirement when comparing with the TLB entry,
so any non-0 bit there will cause the compare to fail.
For the same number of instructions, we can instead add the access
size - 1 to the address and stick to clearing all the bottom bits.
That means that normal unaligned accesses will not fallback (the HW
will handle them fine). Only when crossing a page boundary well we
end up having a mismatch because we'll end up pointing to the next
page which cannot possibly be in that same TLB entry.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Message-Id: <1437455978.5809.2.camel@kernel.crashing.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Softmmu unaligned load/stores currently goes through through the slow
path for two reasons:
- to support unaligned access on host with strict alignement
- to correctly handle accesses crossing pages
x86 is only concerned by the second reason. Unaligned accesses are
avoided by compilers, but are not uncommon. We therefore would like
to see them going through the fast path, if they don't cross pages.
For that we can use the fact that two adjacent TLB entries can't contain
the same page. Therefore accessing the TLB entry corresponding to the
first byte, but comparing its content to page address of the last byte
ensures that we don't cross pages. We can do this check without adding
more instructions in the TLB code (but increasing its length by one
byte) by using the LEA instruction to combine the existing move with the
size addition.
On an x86-64 host, this gives a 3% boot time improvement for a powerpc
guest and 4% for an x86-64 guest.
[rth: Tidied calculation of the offset mask]
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <1436467197-2183-1-git-send-email-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Rather than allow arbitrary shift+trunc, only concern ourselves
with low and high parts. This is all that was being used anyway.
Signed-off-by: Richard Henderson <rth@twiddle.net>
They behave the same as ext32s_i64 and ext32u_i64 from the constant
folding and zero propagation point of view, except that they can't
be replaced by a mov, so we don't compute the affected value.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The tcg_gen_trunc_shr_i64_i32 function takes a 64-bit argument and
returns a 32-bit value. Directly call tcg_gen_op3 with the correct
types instead of calling tcg_gen_op3i_i32 and abusing the TCG types.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The op is sometimes named trunc_shr_i32 and sometimes trunc_shr_i64_i32,
and the name in the README doesn't match the name offered to the
frontends.
Always use the long name to make it clear it is a size changing op.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Instead of using an enum which could be either a copy or a const, track
them separately. This will be used in the next patch.
Constants are tracked through a bool. Copies are tracked by initializing
temp's next_copy and prev_copy to itself, allowing to simplify the code
a bit.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Add two accessor functions temp_is_const and temp_is_copy, to make the
code more readable and make code change easier.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The tcg_temp_info structure uses 24 bytes per temp. Now that we emulate
vector registers on most guests, it's not uncommon to have more than 100
used temps. This means we have initialize more than 2kB at least twice
per TB, often more when there is a few goto_tb.
Instead used a TCGTempSet bit array to track which temps are in used in
the current basic block. This means there are only around 16 bytes to
initialize.
This improves the boot time of a MIPS guest on an x86-64 host by around
7% and moves out tcg_optimize from the the top of the profiler list.
[rth: Handle TCG_CALL_DUMMY_ARG]
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
By convention, on a 64-bit host TCG internally stores 32-bit constants
as sign-extended. This is not the case in the optimizer when a 32-bit
constant is folded.
This doesn't seem to have more consequences than suboptimal code
generation. For instance the x86 backend assumes sign-extended constants,
and in some rare cases uses a 32-bit unsigned immediate 0xffffffff
instead of a 8-bit signed immediate 0xff for the constant -1. This is
with a ppc guest:
before
------
---- 0x9f29cc
movi_i32 tmp1,$0xffffffff
movi_i32 tmp2,$0x0
add2_i32 tmp0,CA,CA,tmp2,r6,tmp2
add2_i32 tmp0,CA,tmp0,CA,tmp1,tmp2
mov_i32 r10,tmp0
0x7fd8c7dfe90c: xor %ebp,%ebp
0x7fd8c7dfe90e: mov %ebp,%r11d
0x7fd8c7dfe911: mov 0x18(%r14),%r9d
0x7fd8c7dfe915: add %r9d,%r10d
0x7fd8c7dfe918: adc %ebp,%r11d
0x7fd8c7dfe91b: add $0xffffffff,%r10d
0x7fd8c7dfe922: adc %ebp,%r11d
0x7fd8c7dfe925: mov %r11d,0x134(%r14)
0x7fd8c7dfe92c: mov %r10d,0x28(%r14)
after
-----
---- 0x9f29cc
movi_i32 tmp1,$0xffffffffffffffff
movi_i32 tmp2,$0x0
add2_i32 tmp0,CA,CA,tmp2,r6,tmp2
add2_i32 tmp0,CA,tmp0,CA,tmp1,tmp2
mov_i32 r10,tmp0
0x7f37010d490c: xor %ebp,%ebp
0x7f37010d490e: mov %ebp,%r11d
0x7f37010d4911: mov 0x18(%r14),%r9d
0x7f37010d4915: add %r9d,%r10d
0x7f37010d4918: adc %ebp,%r11d
0x7f37010d491b: add $0xffffffffffffffff,%r10d
0x7f37010d491f: adc %ebp,%r11d
0x7f37010d4922: mov %r11d,0x134(%r14)
0x7f37010d4929: mov %r10d,0x28(%r14)
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <1436544211-2769-2-git-send-email-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The cocoa GUI frontend assumes it is the only GUI (it redefines
main() so it always gets control before the rest of QEMU), so
it does not play well with other UIs like SDL or GTK. (Mostly
people building QEMU on OSX don't have the necessary dependencies
available for configure to build those other front ends, so
mostly this problem goes unnoticed.)
Make configure automatically disable the SDL and GTK front ends
if the cocoa front end is enabled. (We were sort of attempting
to do this for SDL before, but not in a way that worked very well.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: John Arbuckle <programmingkidx@gmail.com>
Message-id: 1439565052-3457-1-git-send-email-peter.maydell@linaro.org
apic_internal.h relies on cpu.h having been included (for the
X86CPU type); include it directly rather than relying on it
being pulled in via one of the other includes like timer.h.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Move the muldiv64() function from qemu-common.h to host-utils.h.
This puts it together with all the other arithmetic functions
where we provide a version with __int128_t and a fallback
without, and allows headers which need muldiv64() to avoid
including qemu-common.h.
We don't include host-utils from qemu-common.h, to avoid dragging
more things into qemu-common.h than it already has; in practice
everywhere that needs muldiv64() can get it via qemu/timer.h.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Add a header comment to osdep.h, explaining what the header is for
and some rules to avoid circular-include difficulties.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
qemu-common.h has some system header includes and fixups for
things that might be missing. This is really an OS dependency
and belongs in osdep.h, so move it across.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
qemu-common.h includes some fixups for things the Win32
headers don't define or define weirdly. These really
belong in os-win32.h, so move them there.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Rather than rolling custom concatenate-strings macros for the
QEMU_BUILD_BUG_ON macro to use, use the glue() macro we already
have (since it's now available to us in this header).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
osdep.h has a few things which are really compiler specific;
move them to compiler.h, and include compiler.h from osdep.h.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
qemu_printf is an ancient remnant which has been a simple #define to
printf for over a decade, and is used in only a few places. Expand
it out in those places and remove the #define.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
qmp-event.c already includes qemu-common.h, so manually including
os-win32.h/os-posix.h is unnecessary (and potentially fragile,
since it's duplicating the #ifdef logic that chooses which of the
two we need). Remove the unnecessary include logic.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
This avoids having to manually swap them around when swapping to and
from PALmode. We simply encode the shadow registers into the translation.
The VMStateDescription version changes, because the meaning of "shadow"
changes in the save file when in PALmode. It would be possible to fix
this, but I don't think it's worth the effort.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
* SCSI fixes from Stefan and Fam
* vhost-scsi fix from Igor and Lu Lina
* a build system fix from Daniel
* two more multi-arch-related patches from Peter C.
* TCG patches from myself and Sergey Fedorov
* RCU improvement from Wen Congyang
* a few more simple cleanups
# gpg: Signature made Fri 14 Aug 2015 22:41:52 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream:
disas: Defeature print_target_address
hw: fix mask for ColdFire UART command register
scsi-generic: identify AIO callbacks more clearly
scsi-disk: identify AIO callbacks more clearly
scsi: create restart bottom half in the right AioContext
configure: only add CONFIG_RDMA to config-host.h once
qemu-nbd: remove unnecessary qemu_notify_event()
vhost-scsi: Clarify vhost_virtqueue_mask argument
exec: use macro ROUND_UP for alignment
rcu: Allow calling rcu_(un)register_thread() during synchronize_rcu()
exec: drop cpu_can_do_io, just read cpu->can_do_io
cpu_defs: Simplify CPUTLB padding logic
cpu-exec: Do not invalidate original TB in cpu_exec_nocache()
vhost/scsi: call vhost_dev_cleanup() at unrealize() time
virtio-scsi-test: Add test case for tail unaligned WRITE SAME
scsi-disk: Fix assertion failure on WRITE SAME
tests: virtio-scsi: clear unit attention after reset
scsi-disk: fix cmd.mode field typo
virtio-scsi: use virtqueue_map_sg() when loading requests
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Functions that are not callbacks should assert that aiocb is NULL and
have a SCSIGenericReq argument.
AIO callbacks should assert that aiocb is not NULL. They also have an
opaque argument.
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Functions that are not callbacks should assert that aiocb is NULL and
have a non-opaque argument (usually a pointer to SCSIDiskReq).
AIO callbacks should assert that aiocb is not NULL and take care of
calling block_acct done. They also have an opaque argument.
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This matches commit 4407c1c (virtio-blk: Schedule BH in the right context,
2014-06-17), which did the same thing for virtio-blk.
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
For unknown reasons (probably a git rebase merge mistake)
commit 2da776db48
Author: Michael R. Hines <mrhines@us.ibm.com>
Date: Mon Jul 22 10:01:54 2013 -0400
rdma: core logic
Adds CONFIG_RDMA to config-host.h twice, as can be seen
in the generated file:
$ grep CONFIG_RDMA config-host.h
#define CONFIG_RDMA 1
#define CONFIG_RDMA 1
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1438345403-32467-1-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This was needed when qemu-nbd was using qemu_set_fd_handler2. It is
not needed anymore now that nbd_update_server_fd_handler is called
whenever nbd_can_accept() can change from false to true.
nbd_update_server_fd_handler will call qemu_set_fd_handler(),
which will call qemu_notify_event().
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If rcu_(un)register_thread() is called together with synchronize_rcu(),
it will wait for the synchronize_rcu() to finish. But when synchronize_rcu()
waits for some events, we can modify the list registry.
We also use the lock rcu_gp_lock to assume that synchronize_rcu() isn't
executed in more than one thread at the same time. Add a new mutex lock
rcu_sync_lock to assume it and rename rcu_gp_lock to rcu_registry_lock.
Release rcu_registry_lock when synchronize_rcu() waits for some events.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Message-Id: <55B59652.4090503@cn.fujitsu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
After commit 626cf8f (icount: set can_do_io outside TB execution,
2014-12-08), can_do_io is set to 1 if not executing code. It is
no longer necessary to make this assumption in cpu_can_do_io.
It is also possible to remove the use_icount test, simply by
never setting cpu->can_do_io to 0 unless use_icount is true.
With these changes cpu_can_do_io boils down to a read of
cpu->can_do_io.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
# gpg: Signature made Fri 14 Aug 2015 16:01:19 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/net-pull-request:
tests: test rx recovery from cont
tests: introduce basic pci test for virtio-net
net/vmxnet3: Fix incorrect debug message
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Fri 14 Aug 2015 14:54:27 BST using RSA key ID C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg: aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg: aka "Jeffrey Cody <codyprime@gmail.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 9957 4B4D 3474 90E7 9D98 D624 BDBE 7B27 C0DE 3057
* remotes/cody/tags/block-pull-request:
mirror: Fix coroutine reentrance
block/mirror: limit qiov to IOV_MAX elements
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Fri 14 Aug 2015 15:41:14 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/block-pull-request:
throttle: add throttle_max_is_missing_limit() test
throttle: refuse bps_max/iops_max without bps/iops
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This fixes a regression introduced by commit dcfb3beb ("mirror: Do zero
write on target if sectors not allocated"), which was reported to cause
aborts with the message "Co-routine re-entered recursively".
The cause for this bug is the following code in mirror_iteration_done():
if (s->common.busy) {
qemu_coroutine_enter(s->common.co, NULL);
}
This has always been ugly because - unlike most places that reenter - it
doesn't have a specific yield that it pairs with, but is more
uncontrolled. What we really mean here is "reenter the coroutine if
it's in one of the four explicit yields in mirror.c".
This used to be equivalent with s->common.busy because neither
mirror_run() nor mirror_iteration() call any function that could yield.
However since commit dcfb3beb this doesn't hold true any more:
bdrv_get_block_status_above() can yield.
So what happens is that bdrv_get_block_status_above() wants to take a
lock that is already held, so it adds itself to the queue of waiting
coroutines and yields. Instead of being woken up by the unlock function,
however, it gets woken up by mirror_iteration_done(), which is obviously
wrong.
In most cases the code actually happens to cope fairly well with such
cases, but in this specific case, the unlock must already have scheduled
the coroutine for wakeup when mirror_iteration_done() reentered it. And
then the coroutine happened to process the scheduled restarts and tried
to reenter itself recursively.
This patch fixes the problem by pairing the reenter in
mirror_iteration_done() with specific yields instead of abusing
s->common.busy.
Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1439455310-11263-1-git-send-email-kwolf@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
MIPS patches 2015-08-13
Changes:
* mips32r5-generic CPU updated and renamed to P5600
* improvements in LWL/LDL, logging and fulong2e
# gpg: Signature made Thu 13 Aug 2015 17:10:59 BST using RSA key ID 0B29DA6B
# gpg: Good signature from "Leon Alrae <leon.alrae@imgtec.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 8DD3 2F98 5495 9D66 35D4 4FC0 5211 8E3C 0B29 DA6B
* remotes/lalrae/tags/mips-20150813:
target-mips: Use CPU_LOG_INT for logging related to interrupts
hw/pci-host/bonito: Avoid buffer overrun for bad LDMA/COP accesses
target-mips: simplify LWL/LDL mask generation
target-mips: update mips32r5-generic into P5600
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The LDMA and COP memory regions represent four 32 bit registers
each, but the memory regions themselves are 0x100 bytes large.
Add guards to the read and write accessors so that bogus accesses
beyond the four defined registers don't just run off the end of
the bonldma and boncop structs and into whatever lies beyond.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
The LWL/LDL instructions mask the GPR with a mask depending on the
address alignement. It is currently computed by doing:
mask = 0x7fffffffffffffffull >> (t1 ^ 63)
It's simpler to generate it by doing:
mask = ~(-1 << t1)
It uses one TCG instruction less, and it avoids a 32/64-bit constant
loading which can take a few instructions on RISC hosts.
Cc: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
As full specification of P5600 is available, mips32r5-generic should
be renamed to P5600 and corrected as its intention.
Correct PRid and detail of configuration.
Features which are not currently supported are described as FIXME.
Fix Config.MM bit location
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
[leon.alrae@imgtec.com: correct cache line sizes and LLAddr shift]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
virtio,pc,acpi fixes, cleanups
Mostly cleanups, notably Eduardo's compat code rework,
and smbios rearrangement for use by ARM.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Thu 13 Aug 2015 12:59:16 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream: (24 commits)
MAINTAINERS: list smbios maintainers
smbios: move smbios code into a common folder
smbios: remove dependency on x86 e820 tables
smbios: extract x86 smbios building code into a function
acpi: avoid potential uninitialized access to cpu_hp_io_base
virtio-net: remove useless codes
pci: allow 0 address for PCI IO/MEM regions
pc: Remove redundant arguments from pc_memory_init()
pc: Remove redundant arguments from pc_cmos_init()
pc: Remove redundant arguments from *load_linux()
pc: Use PCMachineState as pc_guest_info_init() argument
pc: Move {above,below}_4g_mem_size variables to PCMachineState
pc: Use PCMachineState for pc_memory_init() argument
pc: Use PCMachineState for pc_cmos_init() argument
pc: Eliminate pc_default_machine_options()
pc: Eliminate pc_common_machine_options()
pc: Move PCMachineClass, PCMachineState to qemu/typedefs.h
pc: Rename pc_machine variables to pcms
pc: Use error_abort when registering properties
target-i386: Remove x86_cpu_compat_set_features()
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Now that smbios has its own directory, list its
maintainers. Same people as ACPI so just reuse that
entry.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
To share smbios among different architectures, this patch moves SMBIOS
code (smbios.c and smbios.h) from x86 specific folders into new
hw/smbios directories. As a result, CONFIG_SMBIOS=y is defined in
x86 default config files.
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Wei Huang <wei@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Current smbios builds type 19 table from e820, which is x86 specific.
This patch removes smbios' dependency on e820 by passing an array
of memory area to smbios_get_tables().
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Wei Huang <wei@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When building QEMU with Mingw64 toolchain I see a warning
CC x86_64-softmmu/hw/i386/acpi-build.o
hw/i386/acpi-build.c: In function 'acpi_build':
hw/i386/acpi-build.c:1138:9: warning: 'pm.cpu_hp_io_base' may be used uninitialized in this function [-Wmaybe-uninitialized]
aml_append(crs,
^
hw/i386/acpi-build.c:1666:16: note: 'pm.cpu_hp_io_base' was declared here
AcpiPmInfo pm;
^
In acpi_get_pm_info() some of the fields are pre-initialized
to 0, but this one was missed.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
After commit 40bad8f3deba15e2074ff34cfe923c12916b1cc5("virtio-net: fix
used len for tx"), async_tx.len was no longer used afterwards. So
remove useless codes with it.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Some kernels program a 0 address for io regions. PCI 3.0 spec
section 6.2.5.1 doesn't seem to disallow this.
based on patch by Michael Roth <mdroth@linux.vnet.ibm.com>
Add pci_allow_0_addr in MachineClass to conditionally
allow addr 0 for pseries, as this can break other architectures.
This patch allows to hotplug PCI card in pseries machine, as the first
added card BAR0 is always set to 0 address.
This as a temporary hack, waiting to fix PCI memory priorities for more
machine types...
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Remove arguments that can be found in PCMachineState.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Remove arguments that can be found in PCMachineState.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Remove arguments that can be found in PCMachineState.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This will make the info readily available for the other initialization
functions, and will allow us to simplify their argument list.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pc_memory_init() already expects a PCMachineState object, there's no
point in upcasting it to MachineState before calling the function.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pc_cmos_init() already expects a PCMachineState object, there's no point
in upcasting it to MachineState before calling the function.
While doing it, reorder the arguments so PCMachineState is the first
function argument.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The only PC machines that didn't call pc_default_machine_options() were
isaps and xenfv. Both were already overwriting max_cpus, and only isapc
was not overwriting hot_add_cpu.
After making isapc set hot_add_cpu to NULL, we can move the
pc_default_machine_options() code the PC common class_init.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
All TYPE_PC_MACHINE subclasses call pc_common_machine_options().
TYPE_PC_MACHINE can simply initialize the common options on class_init
directly.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
They will be used inside hw/xen/xen.h, which doesn't include
hw/i386/pc.h.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Make the code use the same variable name everywhere. "pcms" is already
being used in existing code and it's shorter.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
No errors should happen when registering the properties, but we
shouldn't silently ignore them if they happen.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The function is not used by PC code anymore and can be removed.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Now we can use compat_props to keep CPUID feature compatibility, using
the boolean QOM properties for CPUID feature flags.
This simplifies the compatibility code, and reduces duplication between
pc_piix.c and pc_q35.c.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The existing i440fx initialization code sets a PCI config register that
isn't documented anywhere in the Intel 440FX datasheet. Register 0x57 is
DRAMC (DRAM Control) and has nothing to do with the RAM size.
This was implemented in commit ec5f92ce6a
because old coreboot code tried to read registers 0x5a-0x5f,0x56,0x57 to
get the RAM size from QEMU, but I couldn't find out why coreboot did
that. I assume it was a mistake, and the original code was supposed to
be reading the DRB[0-7] registers (offsets 0x60-0x67).
Document that coreboot-specific register offset in a macro and a
comment, for future reference.
Cc: Ed Swierk <eswierk@skyportsystems.com>
Cc: Richard Smith <smithbone@gmail.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The old rules.mak loads dependency .d files using include directive
with file glob pattern "*.d". This breaks the build when build tree has
left-over *.d files from another build.
This patch fixes this by
- loading precise list of .d files made from *.o and *.mo.
- specifying explicit list of required dependency info files for
*.hex autogenerated sources.
Note that Makefile still includes some .d in root directory by including
"*.d".
Signed-off-by: Victor Kaplansky <victork@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
In rules like "bar/%.o: %.c" there is a difference between $(*D) and
$(@D). $(*D) expands to '.', while $(@D) expands to 'bar'. It is
cleaner to generate *.d in the same directory where appropriate *.o
resides. This allows precise including of dependency info from .d files.
As a hack, we also touch two sources for generated *.hex files. Without
this hack, anyone doing "git pull; make" will not get *.hex rebuilt
correctly since the dependency file would be missing.
Signed-off-by: Victor Kaplansky <victork@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
target-arm queue:
* i.MX code cleanup/refactorings
* i.MX UART fix to work with uninitialized chardev
* minor GIC code refactorings
* implement the ARM Secure physical timer
* implement the ARM Hypervisor timer
# gpg: Signature made Thu 13 Aug 2015 11:40:56 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
* remotes/pmaydell/tags/pull-target-arm-20150813: (27 commits)
i.MX: Fix UART driver to work with unitialized "chardev" device
hw/cpu/a15mpcore: Wire up hyp and secure physical timer interrupts
hw/arm/virt: Wire up secure timer interrupt
target-arm: Add AArch32 banked register access to secure physical timer
target-arm: Add the AArch64 view of the Secure physical timer
target-arm: Add debug check for mismatched cpreg resets
Introduce gic_class_name() instead of repeating condition
hw/arm/gic: Kill code duplication
Merge memory_region_init_reservation() into memory_region_init_io()
i.MX: Fix Coding style for GPT emulator
i.MX: Split GPT emulator in a header file and a source file
i.MX: Fix Coding style for EPIT emulator
i.MX: Split EPIT emulator in a header file and a source file
i.MX: Fix Coding style for CCM emulator
i.MX: Split CCM emulator in a header file and a source file
i.MX: Fix Coding style for AVIC emulator.
i.MX: Split AVIC emulator in a header file and a source file
i.MX:Fix Coding style for UART emulator.
i.MX: Move serial initialization to init/realize of DeviceClass.
i.MX: Split UART emulator in a header file and a source file
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The "chardev" property initialization might have failed (for example because
there are not enough chardevs provided by QEMU).
The serial device emulator needs to be able to work with an uninitialized
(NULL) chardev device pointer.
This patch adds some missing tests on the chr pointer value before
using it.
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1438342461-18967-1-git-send-email-jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Wire up the secure timer interrupt. Since we've defined
that the plain old physical timer is the NS timer, we can
drop the now-out-of-date comment about QEMU not having TZ.
Use a data-driven loop to wire up the timer interrupts, since
we now have four of them and the code is the same for each.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1437047249-2357-4-git-send-email-peter.maydell@linaro.org
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
If EL3 is AArch32, then the secure physical timer is accessed via
banking of the registers used for the non-secure physical timer.
Implement this banking.
Note that the access controls for the AArch32 banked registers
remain the same as the physical-timer checks; they are not the
same as the controls on the AArch64 secure timer registers.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1437047249-2357-3-git-send-email-peter.maydell@linaro.org
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
It's easy to accidentally define two cpregs which both try
to reset the same underlying state field (for instance a
clash between an AArch64 EL3 definition and an AArch32
banked register definition). if the two definitions disagree
about the reset value then the result is dependent on which
one happened to be reached last in the hashtable enumeration.
Add a consistency check to detect and assert in these cases:
after reset, we run a second pass where we check that the
reset operation doesn't change the value of the register.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1436797559-20835-1-git-send-email-peter.maydell@linaro.org
Instead of invalidating an original TB in cpu_exec_nocache()
prematurely, just save a link to it in the temporary generated TB. If
cpu_io_recompile() is raised subsequently from the temporary TB,
invalidate the original one as well. That allows reusing the original TB
each time cpu_exec_nocache() is called to handle expired instruction
counter in icount mode.
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-Id: <1435656909-29116-1-git-send-email-serge.fdrv@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If mirror has more free buffers than IOV_MAX, preadv(2)/pwritev(2)
EINVAL failures may be encountered.
It is possible to trigger this by setting granularity to a low value
like 8192.
This patch stops appending chunks once IOV_MAX is reached.
The spurious EINVAL failure can be reproduced with a qcow2 image file
and the following QMP invocation:
qmp.command('drive-mirror', device='virtio0', target='/tmp/r7.s1',
granularity=8192, sync='full', mode='absolute-paths',
format='raw')
While the guest is running dd if=/dev/zero of=/var/tmp/foo oflag=direct
bs=4k.
Cc: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1435761950-26714-1-git-send-email-stefanha@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
virtio fix for 2.4
Fixes migration in virtio 1 mode.
We still have a known bug with memory hotplug, it doesn't
look like we can fix that in time for 2.4.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Wed 05 Aug 2015 15:57:39 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
virtio: fix 1.0 virtqueue migration
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit 488981a4 [block: convert quorum blockdrv to use crypto APIs]
broke qemu-iotest 041 on hosts with GnuTLS < 2.10.0. It converted a
compile-time check to a run-time check at device open time. The result
is that we now advertise a feature (the quorum block driver) that will
never work (on those hosts). There's no way (short of parsing
human-readable error messages) for qemu-iotests or any other API
consumer to recognise that the quorum block driver isn't _actually_
available and shouldn't be used or tested.
Move the run-time check to bdrv_quorum_init() to avoid registering the
quorum block driver if we know it cannot work. This way API consumers
can recognise it's unavailable.
Fixes: 488981a4af
Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-id: 1438699705-21761-1-git-send-email-silbe@linux.vnet.ibm.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
1.0 does not requires physically-contiguous pages layout for a
virtqueue. So we could not infer avail and used from desc. This means
we need to migrate vring.avail and vring.used when host support virtio
1.0. This fixes malfunction of virtio 1.0 device after migration.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
X86 queue, 2015-08-04
# gpg: Signature made Tue 04 Aug 2015 16:49:42 BST using RSA key ID 984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/x86-pull-request:
target-i386: fix IvyBridge xlevel in PC_COMPAT_2_3
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
MIPS patches 2015-08-04
Changes:
* fix semihosting for microMIPS R6
* fix an abort when booting mips64 kernel with --enable-tcg-debug
# gpg: Signature made Tue 04 Aug 2015 12:32:17 BST using RSA key ID 0B29DA6B
# gpg: Good signature from "Leon Alrae <leon.alrae@imgtec.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 8DD3 2F98 5495 9D66 35D4 4FC0 5211 8E3C 0B29 DA6B
* remotes/lalrae/tags/mips-20150804:
target-mips: Copy restrictions from ext/ins to dext/dins
target-mips: fix semihosting for microMIPS R6
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The checks in dins is required to avoid triggering an assertion
in tcg_gen_deposit_tl. The check in dext is just for completeness.
Fold the other D cases in via fallthru.
In this case the errant dins appears to be data, not code, as
translation failed to stop after a break insn.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
In semihosting mode the SDBBP 1 instructions should trigger UHI syscall,
but in QEMU this does not happen for recently added microMIPS R6.
Consequently bare metal microMIPS R6 programs supporting UHI will not run.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
cve-2015-5166
# gpg: Signature made Mon 03 Aug 2015 15:27:44 BST using RSA key ID 70E1AE90
# gpg: Good signature from "Stefano Stabellini <stefano.stabellini@eu.citrix.com>"
* remotes/sstabellini/tags/cve-2015-5166-tag:
Fix release_drive on unplugged devices (pci_piix3_xen_ide_unplug)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
xen-migration-2.4
# gpg: Signature made Mon 03 Aug 2015 17:18:36 BST using RSA key ID 70E1AE90
# gpg: Good signature from "Stefano Stabellini <stefano.stabellini@eu.citrix.com>"
* remotes/sstabellini/tags/xen-migration-2.4-tag:
migration: Fix regression for xenfv and pc,accel=xen machine.
migration: Fix global state with Xen.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This fix migration from the same QEMU version and from previous QEMU
version.
>From the global state section, we don't need runstate with Xen. Right now,
the way the Xen toolstack knows when QEMU is ready is when QEMU reach
"running" runstate.
The configuration section and the section footers are not going to be
present in previous version of QEMU with xenfv machine, so we skip them.
The Xen toolstack libxenlight does not specify a particular version of the
'pc' machine, so migration from older version of QEMU used by Xen to newer
one would break due to missing "configuration" section and section footers.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
When doing migration via the QMP command xen_save_devices_state, the
current runstate is not store into the global state section. Also the
current runstate is not the one we want on the receiver side.
During migration, the Xen toolstack paused QEMU before save the devices
state. Also, the toolstack expect QEMU to autostart when the migration is
finished.
So this patch store "running" as it's current runstate.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
pci_piix3_xen_ide_unplug should completely unhook the unplugged
IDEDevice from the corresponding BlockBackend, otherwise the next call
to release_drive will try to detach the drive again.
Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Pull request
# gpg: Signature made Mon Aug 3 13:08:25 2015 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/rtl8139-cplus-tx-input-validation-pull-request:
rtl8139: check TCP Data Offset field (CVE-2015-5165)
rtl8139: skip offload on short TCP header (CVE-2015-5165)
rtl8139: check IP Total Length field (CVE-2015-5165)
rtl8139: check IP Header Length field (CVE-2015-5165)
rtl8139: skip offload on short Ethernet/IP header (CVE-2015-5165)
rtl8139: drop tautologous if (ip) {...} statement (CVE-2015-5165)
rtl8139: avoid nested ifs in IP header parsing (CVE-2015-5165)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The TCP Data Offset field contains the length of the header. Make sure
it is valid and does not exceed the IP data length.
Reported-by: 朱东海(启路) <donghai.zdh@alibaba-inc.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
TCP Large Segment Offload accesses the TCP header in the packet. If the
packet is too short we must not attempt to access header fields:
tcp_header *p_tcp_hdr = (tcp_header*)(eth_payload_data + hlen);
int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr);
Reported-by: 朱东海(启路) <donghai.zdh@alibaba-inc.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The IP Total Length field includes the IP header and data. Make sure it
is valid and does not exceed the Ethernet payload size.
Reported-by: 朱东海(启路) <donghai.zdh@alibaba-inc.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Transmit offload features access Ethernet and IP headers the packet. If
the packet is too short we must not attempt to access header fields:
int proto = be16_to_cpu(*(uint16_t *)(saved_buffer + 12));
...
eth_payload_data = saved_buffer + ETH_HLEN;
...
ip = (ip_header*)eth_payload_data;
if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) {
Reported-by: 朱东海(启路) <donghai.zdh@alibaba-inc.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The previous patch stopped using the ip pointer as an indicator that the
IP header is present. When we reach the if (ip) {...} statement we know
ip is always non-NULL.
Remove the if statement to reduce nesting.
Reported-by: 朱东海(启路) <donghai.zdh@alibaba-inc.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Transmit offload needs to parse packet headers. If header fields have
unexpected values the offload processing is skipped.
The code currently uses nested ifs because there is relatively little
input validation. The next patches will add missing input validation
and a goto label is more appropriate to avoid deep if statement nesting.
Reported-by: 朱东海(启路) <donghai.zdh@alibaba-inc.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
TCG MIPS and S390 fixes for 2.4.
# gpg: Signature made Mon Aug 3 09:09:59 2015 BST using RSA key ID 1DDD8C9B
# gpg: Good signature from "Aurelien Jarno <aurelien@aurel32.net>"
# gpg: aka "Aurelien Jarno <aurelien@jarno.fr>"
# gpg: aka "Aurelien Jarno <aurel32@debian.org>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 7746 2642 A9EF 94FD 0F77 196D BA9C 7806 1DDD 8C9B
* remotes/aurel/tags/pull-tcg-mips-s390-20150803:
tcg/mips: fix add2
tcg/s390x: Mask TCGMemOp appropriately for indexing
tcg/mips: Mask TCGMemOp appropriately for indexing
tcg/mips: fix TLB loading for BE host with 32-bit guests
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Fri Jul 31 23:24:06 2015 BST using RSA key ID AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: FAEB 9711 A12C F475 812F 18F2 88A9 064D 1835 61EB
# Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76 CBD0 7DEF 8106 AAFC 390E
* remotes/jnsnow/tags/ide-pull-request:
ahci: fix ICC mask definition
macio: re-add TRIM support
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The add2 code in the tcg_out_addsub2 function doesn't take into account
the case where rl == al == bl. In that case we can't compute the carry
after the addition. As it corresponds to a multiplication by 2, the
carry bit is the bit 31.
While this is a corner case, this prevents x86-64 guests to boot on a
MIPS host.
Cc: qemu-stable@nongnu.org
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Commit 2b7ec66f fixed TCGMemOp masking following the MO_AMASK addition,
but two cases were forgotten in the TCG S390 backend.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Commit 2b7ec66f fixed TCGMemOp masking following the MO_AMASK addition,
but two cases were forgotten in the TCG MIPS backend.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
For 32-bit guest, we load a 32-bit address from the TLB, so there is no
need to compensate for the low or high part. This fixes 32-bit guests on
big-endian hosts.
Cc: qemu-stable@nongnu.org
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
There are likely others that could be updated, but we'll
go with a light touch for 2.4 for now.
Without the Unsigned specifier, this shifts bits into the
signed bit, which makes clang unhappy and could cause
unwanted behavior.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1437501721-24495-1-git-send-email-jsnow@redhat.com
vhost-scsi calls vhost_dev_init() at realize() time
but forgets to call it's counterpart vhost_dev_cleanup()
at unrealize() time.
Calling it should fix leaking of memory table and
mem_sections table in vhost device. And also unregister
vhost's memory listerner to prevent access from
memory core to freed memory.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1438262999-287627-1-git-send-email-imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The last portion of an unaligned WRITE SAME command could fail the
assertion in bdrv_aligned_pwritev:
assert(!qiov || bytes == qiov->size);
Because we updated data->iov.iov_len right above this if block, but
data->qiov still has the old size.
Reinitialize the qiov to make them equal and keep block layer happy.
Cc: qemu-stable@nongnu.org
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1438159512-3871-2-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The VirtQueueElement struct is serialized during migration but the
in_sg[]/out_sg[] iovec arrays are not usable on the destination host
because the pointers are meaningless.
Use virtqueue_map_sg() to refresh in_sg[]/out_sg[] to valid pointers
based on in_addr[]/out_addr[] hwaddrs.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <1438262173-11546-2-git-send-email-stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Pull request
These fixes make dataplane work again after the notify_me optimization was
added. They also solve QEMUBH memory leaks and fix a bug in dataplane's
cleanup code.
# gpg: Signature made Wed Jul 29 14:50:26 2015 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/block-pull-request:
AioContext: force event loop iteration using BH
AioContext: avoid leaking BHs on cleanup
virtio-blk-dataplane: delete bottom half before the AioContext is freed
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The notify_me optimization introduced in commit eabc977973
("AioContext: fix broken ctx->dispatching optimization") skips
event_notifier_set() calls when the event loop thread is not blocked in
ppoll(2).
This optimization causes a deadlock if two aio_context_acquire() calls
race. notify_me = 0 during the race so the winning thread can enter
ppoll(2) unaware that the other thread is waiting its turn to acquire
the AioContext.
This patch forces ppoll(2) to return by scheduling a BH instead of
calling aio_notify().
The following deadlock with virtio-blk dataplane is fixed:
qemu ... -object iothread,id=iothread0 \
-drive if=none,id=drive0,file=test.img,... \
-device virtio-blk-pci,iothread=iothread0,drive=drive0
This command-line results in a hang early on without this patch.
Thanks to Paolo Bonzini <pbonzini@redhat.com> for investigating this bug
with me.
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1438101249-25166-4-git-send-email-pbonzini@redhat.com
Message-Id: <1438014819-18125-3-git-send-email-stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Pull request
These two .can_receive() are now reviewed. The net subsystem queue for 2.4 is now empty.
# gpg: Signature made Tue Jul 28 13:26:03 2015 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/net-pull-request:
xen: Drop net_rx_ok
hw/net: handle flow control in mcf_fec driver receiver
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
virtio fixes for 2.4
Mostly virtio 1 spec compliance fixes.
We are unlikely to make it perfectly compliant in
the first release, but it seems worth it to try.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Mon Jul 27 21:55:48 2015 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
virtio: minor cleanup
acpi: fix pvpanic device is not shown in ui
virtio-blk: only clear VIRTIO_F_ANY_LAYOUT for legacy device
virtio-blk: fail get_features when both scsi and 1.0 were set
virtio: get_features() can fail
virtio-pci: fix memory MR cleanup for modern
virtio: set any_layout in virtio core
virtio-9p: fix any_layout
virtio-serial: fix ANY_LAYOUT
virtio: hide legacy features from modern guests
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
MIPS patches 2015-07-28
Changes:
* net/dp8393x fixes
* Vectored Interrupts bug fix
* fix for a bug in machine.c which was provoking a warning on FreeBSD
# gpg: Signature made Tue Jul 28 10:47:19 2015 BST using RSA key ID 0B29DA6B
# gpg: Good signature from "Leon Alrae <leon.alrae@imgtec.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 8DD3 2F98 5495 9D66 35D4 4FC0 5211 8E3C 0B29 DA6B
* remotes/lalrae/tags/mips-20150728:
net/dp8393x: do not use memory_region_init_rom_device with NULL
net/dp8393x: remove check of runt packets
net/dp8393x: disable user creation
target-mips: fix offset calculation for Interrupts
target-mips: fix passing incompatible pointer type in machine.c
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* crypto fixes
* megasas SIGSEGV fix
* memory refcount change to fix virtio hot-unplug
# gpg: Signature made Tue Jul 28 08:29:07 2015 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream:
memory: do not add a reference to the owner of aliased regions
megasas: Add write function to handle write access to PCI BAR 3
crypto: extend unit tests to cover decryption too
crypto: fix built-in AES decrypt function
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Tue Jul 28 05:22:29 2015 BST using RSA key ID C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg: aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg: aka "Jeffrey Cody <codyprime@gmail.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 9957 4B4D 3474 90E7 9D98 D624 BDBE 7B27 C0DE 3057
* remotes/cody/tags/jtc-for-upstream-pull-request:
block/ssh: Avoid segfault if inet_connect doesn't set errno.
sheepdog: serialize requests to overwrapping area
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Let net_rx_packet() (which checks the same conditions) drops the packet
if the device is not ready. Drop net_xen_info.can_receive and update the
return value for the buffer full case.
We rely on the qemu_flush_queued_packets() in net_event() to wake up
the peer when the buffer becomes available again.
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1438077176-378-1-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The network mcf_fec driver emulated receive side method is not dealing
with network queue flow control properly.
Modify the receive side to check if we have enough space in the
descriptors to store the current packet. If not we process none of it
and return 0. When the guest frees up some buffers through its descriptors
we signal the qemu net layer to send more packets.
[Fixed coding style: 4-space indent and curly braces on if statement.
--Stefan]
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Message-id: 1438045374-10358-1-git-send-email-gerg@uclinux.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Replace memory_region_init_rom_device() with memory_region_init_ram() and
memory_region_set_readonly().
This fixes a guest-triggerable QEMU crash when guest tries to write to PROM.
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
[leon.alrae@imgtec.com: shorten subject length]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Ethernet requires that messages are at least 64 bytes on the wire. This
limitation does not exist on emulation (no wire message), so remove the
check. Netcard is now able to receive small network packets.
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Netcard needs an address space to write data to, which can't be specified
on command line.
This fixes a crash when user starts QEMU with "-device dp8393x"
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Block layer patches for 2.4.0-rc3
# gpg: Signature made Mon Jul 27 16:19:17 2015 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
* remotes/kevin/tags/for-upstream:
block: qemu-iotests - add check for multiplication overflow in vpc
block: vpc - prevent overflow if max_table_entries >= 0x40000000
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Correct computation of vector offsets for EXCP_EXT_INTERRUPT.
For instance, if Cause.IV is 0 the vector offset should be 0x180.
Simplify the finding vector number logic for the Vectored Interrupts.
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
[leon.alrae@imgtec.com: cosmetic changes]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
On some (but not all) systems:
$ qemu-img create -f qcow2 overlay -b ssh://xen/
Segmentation fault
It turns out this happens when inet_connect returns -1 in the
following code, but errno == 0.
s->sock = inet_connect(s->hostport, errp);
if (s->sock < 0) {
ret = -errno;
goto err;
}
In the test case above, no host called "xen" exists, so getaddrinfo fails.
On Fedora 22, getaddrinfo happens to set errno = ENOENT (although it
is *not* documented to do that), so it doesn't segfault.
On RHEL 7, errno is not set by the failing getaddrinfo, so ret =
-errno = 0, so the caller doesn't know there was an error and
continues with a half-initialized BDRVSSHState struct, and everything
goes south from there, eventually resulting in a segfault.
Fix this by setting ret to -EIO (same as block/nbd.c and
block/sheepdog.c). The real error is saved in the Error** errp
struct, so it is printed correctly:
$ ./qemu-img create -f qcow2 overlay -b ssh://xen/
qemu-img: overlay: address resolution failed for xen:22: No address associated with hostname
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Reported-by: Jun Li
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1147343
Signed-off-by: Jeff Cody <jcody@redhat.com>
Current sheepdog driver only serializes create requests in oid
unit. This mechanism isn't enough for handling requests to
overwrapping area spanning multiple oids, so it can result bugs like
below:
https://bugs.launchpad.net/sheepdog-project/+bug/1456421
This patch adds a new serialization mechanism for the problem. The
difference from the old one is:
1. serialize entire aiocb if their targetting areas overwrap
2. serialize all requests (read, write, and discard), not only creates
This patch also removes the old mechanism because the new one can be
an alternative.
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Teruaki Ishizaki <ishizaki.teruaki@lab.ntt.co.jp>
Cc: Vasiliy Tolstov <v.tolstov@selfip.ru>
Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>
Tested-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Very often the owner of the aliased region is the same as the owner of the alias
region itself. When this happens, the reference count can never go back to 0 and
the owner is leaked. This is for example breaking hot-unplug of virtio-pci
devices (the device cannot be plugged back again with the same id).
Another common use for alias is to transform the system I/O address space
into an MMIO regions; in this case the aliased region never dies, so there
is no problem. Otherwise the owner is always the same for aliasing
and aliased region.
I checked all calls to memory_region_init_alias introduced after commit
dfde4e6 (memory: add ref/unref calls, 2013-05-06) and they do not need the
reference in order to keep the owner of the aliased region alive.
Reported-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch fixes a QEMU SEGFAULT when a write operation is performed on
the memory region of the PCI BAR 3 (base address space).
When a writeb(0xe0000000) is performed the .write function is invoked to
handle the write access, however, since the .write is not initialised,
the call to 0, causes QEMU to SEGFAULT.
Signed-off-by: Salva Peiró <speirofr@gmail.com>
Acked-by: Hannes Reinecke <hare@suse.com>
Message-Id: <1437987112-24744-1-git-send-email-speirofr@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
gdb expects that the thread ID for c and g-class operations is set to
the CPU we provide when reporting VM stop conditions. If the stub is
still tuned to a different CPU, the wrong information is delivered to
the gdb frontend.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The auto increment bit of the timer control register was wrongly
defined.
See Cortex-A9 MPcore Technical Reference Manual, Section 4.4.2.
Signed-off-by: Johannes Schlatow <schlatow@ida.ing.tu-bs.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
As of d98bc0b65 there are two files that are automatically generated:
ui/shader/texture-blit-frag.h and /ui/shader/texture-blit-vert.h. None
of them is wanted to be tracked by git. Put them into the ignore file
then.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
We want to have uniform build messages, so fix some messages
which did not follow the standard pattern.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Add documentation comments for various utility string functions
which we have implemented in util/cutils.c:
pstrcpy()
strpadcpy()
pstrcat()
strstart()
stristart()
qemu_strnlen()
qemu_strsep()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Fix buglets for 2.4
# gpg: Signature made Mon Jul 27 15:26:48 2015 BST using RSA key ID 4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg: aka "Richard Henderson <rth@redhat.com>"
# gpg: aka "Richard Henderson <rth@twiddle.net>"
* remotes/rth/tags/pull-tcg-20150727:
tcg: mark temps as mem_coherent = 0 for mov with a constant
tcg: correctly mark dead inputs for mov with a constant
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
aio_notify can be optimized away, and in fact almost always will. However,
qemu_notify_event is used in places where this is incorrect---most notably,
when handling SIGTERM. When aio_notify is optimized away, it is possible that
QEMU enters a blocking ppoll immediately afterwards and stays there, without
reaching main_loop_should_exit().
Fix this by using a bottom half. The bottom half can be optimized too, but
scheduling it is enough for the ppoll not to block. The hang is thus avoided.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1437738175-23624-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This checks that VPC is able to successfully fail (without segfault)
on an image file with a max_table_entries that exceeds 0x40000000.
This table entry is within the valid range for VPC (although too large
for this sample image).
Cc: qemu-stable@nongnu.org
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
When we allocate the pagetable based on max_table_entries, we multiply
the max table entry value by 4 to accomodate a table of 32-bit integers.
However, max_table_entries is a uint32_t, and the VPC driver accepts
ranges for that entry over 0x40000000. So during this allocation:
s->pagetable = qemu_try_blockalign(bs->file, s->max_table_entries * 4);
The size arg overflows, allocating significantly less memory than
expected.
Since qemu_try_blockalign() size argument is size_t, cast the
multiplication correctly to prevent overflow.
The value of "max_table_entries * 4" is used elsewhere in the code as
well, so store the correct value for use in all those cases.
We also check the Max Tables Entries value, to make sure that it is <
SIZE_MAX / 4, so we know the pagetable size will fit in size_t.
Cc: qemu-stable@nongnu.org
Reported-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Unfortunately Ubuntu's pkg-config information for gnutls is broken
for the static linking case, and outputs --libs options which the
compiler does not recognize. Work around this problem by testing
that the --cflags/--libs output will at least allow compilation
before enabling gnutls support.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 1437758888-22486-1-git-send-email-peter.maydell@linaro.org
Chapter 6.3 of spec said
"
Transitional devices MUST offer, and if offered by the device
transitional drivers MUST accept the following:
VIRTIO_F_ANY_LAYOUT (27)
"
So this patch only clear VIRTIO_F_LAYOUT for legacy device.
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: qemu-block@nongnu.org
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
SCSI passthrough was no longer supported in virtio 1.0, so this patch
fail the get_features() when both 1.0 and scsi is set. And also only
advertise VIRTIO_BLK_F_SCSI for legacy virtio-blk device.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Each memory_region_add_subregion must be paired with
memory_region_del_subregion.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
When tcg_reg_alloc_mov propagate a constant, we failed to correctly mark
a temp as dead if the liveness analysis hints so. This fixes the
following assert when configure with --enable-debug-tcg:
qemu-x86_64: tcg/tcg.c:1827: tcg_reg_alloc_bb_end: Assertion `ts->val_type == TEMP_VAL_DEAD' failed.
Cc: Richard Henderson <rth@twiddle.net>
Reported-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <1437994568-7825-2-git-send-email-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Pull request
Here are NIC fixes from Fam Zheng that prevent rx hangs (caused by NIC models
where .can_receive() stops rx but qemu_flush_queued_packets() isn't called).
# gpg: Signature made Mon Jul 27 14:51:48 2015 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/net-pull-request:
axienet: Flush queued packets when rx is done
dp8393x: Flush packets when link comes up
stellaris_enet: Flush queued packets when read done
mipsnet: Flush queued packets when receiving is enabled
milkymist-minimac2: Flush queued packets when link comes up
mcf_fec: Drop mcf_fec_can_receive
etsec: Flush queue when rx buffer is consumed
etsec: Move etsec_can_receive into etsec_receive
usbnet: Drop usbnet_can_receive
eepro100: Drop nic_can_receive
pcnet: Drop pcnet_can_receive
xgmac: Drop packets with eth_can_rx is false.
hw/net: fix mcf_fec driver receiver
hw/net: add simple phy support to mcf_fec driver
hw/net: add ANLPAR bit definitions to generic mii
hw/net: create common collection of MII definitions
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
eth_can_rx checks s->rxsize and returns false if it is non-zero. Because
of the .can_receive semantics change, this will make the incoming queue
disabled by peer, until it is explicitly flushed. So we should flush it
when s->rxsize is becoming zero.
Squash eth_can_rx semantics into etx_rx and drop .can_receive()
callback, also add flush when rx buffer becomes available again after a
packet gets queued.
The other conditions, "!axienet_rx_resetting(s) &&
axienet_rx_enabled(s)" are OK because enet_write already calls
qemu_flush_queued_packets when the register bits are changed.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1436955553-22791-13-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
.can_receive callback changes semantics that once return 0, backend will
try sending again until explicitly flushed, change the device to meet
that.
dp8393x_can_receive checks SONIC_CR_RXEN bit in SONIC_CR register and
SONIC_ISR_RBE bit in SONIC_ISR register, try flushing the queue when
either bit is being updated.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1436955553-22791-12-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
If s->np reaches 31, the queue will be disabled by peer when it sees
stellaris_enet_can_receive() returns false, until we explicitly flushes
it which notifies the peer. Do this when guest is done reading all
existing data.
Move the semantics to stellaris_enet_receive, by returning 0 when the
buffer is full, so that new packets will be queued. In
stellaris_enet_read, flush and restart the queue when guest has done
reading.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1436955553-22791-11-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Drop .can_receive and move the semantics into minimac2_rx, by returning
0.
That is once minimac2_rx returns 0, incoming packets will be queued
until the queue is explicitly flushed. We do this when s->regs[R_STATE0]
or s->regs[R_STATE1] is changed in minimac2_write.
Also drop the unused trace point.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1436955553-22791-9-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The semantics of .can_receive requires us to flush the queue explicitly
when s->rx_enabled becomes true after it returns 0, but the packet being
queued is not meaningful since the guest hasn't activated the card.
Let's just drop the packet in this case.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1436955553-22791-8-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
usbnet_receive already drops packet if rndis_state is not
RNDIS_DATA_INITIALIZED, and queues packet if in buffer is not available.
The only difference is s->dev.config but that is similar to rndis_state.
Drop usbnet_can_receive and move these checks to usbnet_receive, so that
we don't need to explicitly flush the queue when s->dev.config changes
value.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1436955553-22791-5-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
nic_receive already checks the conditions and drop packets if false.
Due to the new semantics since 6e99c63 ("net/socket: Drop
net_socket_can_send"), having .can_receive returning 0 requires us to
explicitly flush the queued packets when the conditions are becoming
true, but queuing the packets when guest driver is not ready doesn't
make much sense.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1436955553-22791-4-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
pcnet_receive already checks the conditions and drop packets if false.
Due to the new semantics since 6e99c63 ("net/socket: Drop
net_socket_can_send"), having .can_receive returning 0 requires us to
explicitly flush the queued packets when the conditions are becoming
true, but queuing the packets when guest driver is not ready doesn't
make much sense.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1436955553-22791-3-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The network mcf_fec driver emulated receive side method is returning a
result of 0 causing the network layer to disable receive for this emulated
device. This results in the guest only ever receiving one packet.
Fix the recieve side processing to return the number of bytes that we
passed back through to the guest.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435296436-12152-5-git-send-email-gerg@uclinux.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The Linux fec driver needs at least basic phy support to probe and work.
The current qemu mcf_fec emulation has no support for the reading or
writing of the MDIO lines to access an attached phy.
This code adds a very simple set of register results for a fixed phy
setup - very similar to that used on an m5208evb board. This is enough
to probe and identify an emulated attached phy.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435296436-12152-4-git-send-email-gerg@uclinux.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Add a base set of bit definitions for the standard MII phy "Auto-Negotiation
Link Partner Ability Register" (ANLPAR).
The original definitions moved into mii.h from the allwinner_emac driver
did not define these.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435296436-12152-3-git-send-email-gerg@uclinux.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Create a common set of definitions of address and register values for
ethernet MII phys. A few of the current ethernet drivers have at least
a partial set of these definitions. Others just use hard coded raw
constant numbers.
This initial set is copied directly from the allwinner_emac code.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435296436-12152-2-git-send-email-gerg@uclinux.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
# gpg: Signature made Mon Jul 27 13:01:10 2015 BST using RSA key ID AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: FAEB 9711 A12C F475 812F 18F2 88A9 064D 1835 61EB
# Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76 CBD0 7DEF 8106 AAFC 390E
* remotes/jnsnow/tags/cve-2015-5154-pull-request:
ide: Clear DRQ after handling all expected accesses
ide/atapi: Fix START STOP UNIT command completion
ide: Check array bounds before writing to io_buffer (CVE-2015-5154)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The current unit test only verifies the encryption API,
resulting in us missing a recently introduced bug in the
decryption API from commit d3462e3. It was fortunately
later discovered & fixed by commit bd09594, thanks to the
QEMU I/O tests for qcow2 encryption, but we should really
detect this directly in the crypto unit tests. Also remove
an accidental debug message and simplify some asserts.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1437468902-23230-1-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
virtio pci allows any device to have a modern interface,
this in turn requires ANY_LAYOUT support.
Fix up ANY_LAYOUT for virtio-9p.
Reported-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Don't assume a specific layout for control messages.
Required by virtio 1.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
NOTIFY_ON_EMPTY, ANY_LAYOUT and BAD are only valid on the legacy
interface.
Hide them from modern guests.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This is additional hardening against an end_transfer_func that fails to
clear the DRQ status bit. The bit must be unset as soon as the PIO
transfer has completed, so it's better to do this in a central place
instead of duplicating the code in all commands (and forgetting it in
some).
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
The command must be completed on all code paths. START STOP UNIT with
pwrcnd set should succeed without doing anything.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
If the end_transfer_func of a command is called because enough data has
been read or written for the current PIO transfer, and it fails to
correctly call the command completion functions, the DRQ bit in the
status register and s->end_transfer_func may remain set. This allows the
guest to access further bytes in s->io_buffer beyond s->data_end, and
eventually overflowing the io_buffer.
One case where this currently happens is emulation of the ATAPI command
START STOP UNIT.
This patch fixes the problem by adding explicit array bounds checks
before accessing the buffer instead of relying on end_transfer_func to
function correctly.
Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
* qemu-char fixes
* SCSI fixes (including CVE-2015-5158)
* RCU fixes
* Framebuffer logic to set DIRTY_MEMORY_VGA
* Fix compiler warning for --disable-vnc
* qemu-doc fixes
* x86 TCG pasto fix
# gpg: Signature made Fri Jul 24 12:57:52 2015 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream:
target-i386/FPU: a misprint in helper_fistll_ST0
qemu-doc: fix typos
framebuffer: set DIRTY_MEMORY_VGA on RAM that is used for the framebuffer
memory: count number of active VGA logging clients
vl: Fix compiler warning for builds without VNC
scsi: Handle no media case for scsi_get_configuration
rcu: actually register threads that have RCU read-side critical sections
scsi: fix buffer overflow in scsi_req_parse_cdb (CVE-2015-5158)
vnc: fix memory leak
qemu-char: Fix missed data on unix socket
qemu-char: handle EINTR for TCP character devices
exec.c: Use atomic_rcu_read() to access dispatch in memory_region_section_get_iotlb()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The MemoryRegionSection contains enough information to access the
RAM region underlying the framebuffer, and can be cached inside the
display device.
By doing this, the new framebuffer_update_memory_section function can
enable dirty memory logging on the relevant RAM region. The function
must be called whenever the stride or base of the framebuffer changes;
a simple way to cover these cases is to call it on every full frame
invalidation, which is a rare case.
framebuffer_update_display now works entirely on a MemoryRegionSection,
without going through cpu_physical_memory_map/unmap.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
For a board that has multiple framebuffer devices, both of them
might want to use DIRTY_MEMORY_VGA on the same memory region.
The lack of reference counting in memory_region_set_log makes
this very awkward to implement.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently, scsi_get_configuration always returns a current
profile (DVD or CD), even when there is actually no media present.
By comparison, ide/atapi uses a default profile of 0 (MMC_PROFILE_NONE)
for this case and checks for tray_open, so let's do the same for scsi.
This fixes a problem I'm seeing with Fedora 22 guests where systemd
cdrom_id fails to unmount after a QEMU-initiated eject against a
scsi cdrom device because it believes the media is still present
(but unreadable).
Signed-off-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Message-Id: <1436986352-10695-1-git-send-email-mjrosato@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is a guest-triggerable buffer overflow present in QEMU 2.2.0
and newer. scsi_cdb_length returns -1 as an error value, but the
caller does not check it.
Luckily, the massive overflow means that QEMU will just SIGSEGV,
making the impact much smaller.
Reported-by: Zhu Donghai (朱东海) <donghai.zdh@alibaba-inc.com>
Fixes: 1894df0281
Reviewed-by: Fam Zheng <famz@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Similar to the same fix for user-mode, except this instance
occurs on the softmmu path. Again, the tlb addend must be
the base register, while the guest address is the index.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
NUMA queue, 2015-07-22
# gpg: Signature made Wed Jul 22 19:11:04 2015 BST using RSA key ID 984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/numa-pull-request:
hostmem: Fix qemu_opt_get_bool() crash in host_memory_backend_init()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit 812c1057 introduced HUP detection on unix and tcp sockets prior
to a read in tcp_chr_read. This unfortunately broke CloudStack 4.2
which relied on the old behaviour where data on a socket was readable
even if a HUP was present.
A working solution is to properly check the return values from recv,
handling a closed socket once there is no more data to read.
Also enable polling for G_IO_NVAL to ensure the callback is called
for all possible events as these should now be possible to handle
with the improved error detection.
Signed-off-by: Nils Carlson <pyssling@ludd.ltu.se>
Message-Id: <1437338396-22336-1-git-send-email-pyssling@ludd.ltu.se>
[Do not handle EINTR; use socket_error(). - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When accessing the dispatch pointer in an AddressSpace within an RCU
critical section we should always use atomic_rcu_read(). Fix an
access within memory_region_section_get_iotlb() which was incorrectly
doing a direct pointer access.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1437391637-31576-1-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
bootindex was incorrectly changed to a device Property during the
platform code split, resulting in it no longer working. Remove it.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: qemu-stable@nongnu.org # v2.3+
The RTL8168 quirk correctly describes using bit 31 as a signal to
mark a latch/completion, but the code mistakenly uses bit 28. This
causes the Realtek driver to spin on this register for quite a while,
20k cycles on Windows 7 v7.092 driver. Then it gets frustrated and
tries to set the bit itself and spins for another 20k cycles. For
some this still results in a working driver, for others not. About
the only thing the code really does in its current form is protect
the guest from sneaking in writes to the real hardware MSI-X table.
The fix is obviously to use bit 31 as we document that we should.
The other problem doesn't seem to affect current drivers as nobody
seems to use these window registers for writes to the MSI-X table, but
we need to use the stored data when a write is triggered, not the
value of the current write, which only provides the offset.
Note that only the Windows drivers from Realtek seem to use these
registers, the Microsoft drivers provided with Windows 8.1 do not
access them, nor do Linux in-kernel drivers.
Link: https://bugs.launchpad.net/qemu/+bug/1384892
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: qemu-stable@nongnu.org # v2.1+
This fixes the following crash, introduced by commit
49d2e648e8:
$ gdb --args qemu-system-x86_64 -machine pc,mem-merge=off -object memory-backend-ram,id=ram-node0,size=1024
[...]
Program received signal SIGABRT, Aborted.
(gdb) bt
#0 0x00007ffff253b8c7 in raise () at /lib64/libc.so.6
#1 0x00007ffff253d52a in abort () at /lib64/libc.so.6
#2 0x00007ffff253446d in __assert_fail_base () at /lib64/libc.so.6
#3 0x00007ffff2534522 in () at /lib64/libc.so.6
#4 0x00005555558bb80a in qemu_opt_get_bool_helper (opts=0x55555621b650, name=name@entry=0x5555558ec922 "mem-merge", defval=defval@entry=true, del=del@entry=false) at qemu/util/qemu-option.c:388
#5 0x00005555558bbb5a in qemu_opt_get_bool (opts=<optimized out>, name=name@entry=0x5555558ec922 "mem-merge", defval=defval@entry=true) at qemu/util/qemu-option.c:398
#6 0x0000555555720a24 in host_memory_backend_init (obj=0x5555562ac970) at qemu/backends/hostmem.c:226
Instead of using qemu_opt_get_bool(), that didn't work with
qemu_machine_opts for a long time, we can use the corresponding
MachineState fields.
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
qxl: build fix for 2.4
# gpg: Signature made Wed Jul 22 15:55:00 2015 BST using DSA key ID F43F0992
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>"
# gpg: aka "Marc-Andre Lureau <marcandre.lureau@gmail.com>"
# gpg: aka "Marc-Andre Lureau <marc-andre.lureau@nokia.com>"
# gpg: aka "Marc-André Lureau <marc-andre.lureau@nokia.com>"
# gpg: aka "Marc-André Lureau (elmarco) <marcandre.lureau@gmail.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 7346 2483 9404 4E20 ABFF 7D48 D864 9487 F43F 0992
* remotes/elmarco/tags/for-upstream:
qxl: Fix new function name for spice-server library
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The new spice-server function to limit the number of monitors (0.12.6)
changed while development from spice_qxl_set_monitors_config_limit to
spice_qxl_max_monitors (accepted upstream).
By mistake I post patch with former name.
This patch fix the function name.
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>
Acked-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
It is pretty rare for aio_notify to actually set the EventNotifier. It
can happen with worker threads such as thread-pool.c's, but otherwise it
should never be set thanks to the ctx->notify_me optimization. The
previous patch, unfortunately, added an unconditional call to
event_notifier_test_and_clear; now add a userspace fast path that
avoids the call.
Note that it is not possible to do the same with event_notifier_set;
it would break, as proved (again) by the included formal model.
This patch survived over 3000 reboots on aarch64 KVM.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Message-id: 1437487673-23740-7-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
event_notifier_test_and_clear must be called before processing events.
Otherwise, an aio_poll could "eat" the notification before the main
I/O thread invokes ppoll(). The main I/O thread then never wakes up.
This is an example of what could happen:
i/o thread vcpu thread worker thread
---------------------------------------------------------------------
lock_iothread
notify_me = 1
...
unlock_iothread
bh->scheduled = 1
event_notifier_set
lock_iothread
notify_me = 3
ppoll
notify_me = 1
aio_dispatch
aio_bh_poll
thread_pool_completion_bh
bh->scheduled = 1
event_notifier_set
node->io_read(node->opaque)
event_notifier_test_and_clear
ppoll
*** hang ***
"Tracing" with qemu_clock_get_ns shows pretty much the same behavior as
in the previous bug, so there are no new tricks here---just stare more
at the code until it is apparent.
One could also use a formal model, of course. The included one shows
this with three processes: notifier corresponds to a QEMU thread pool
worker, temporary_waiter to a VCPU thread that invokes aio_poll(),
waiter to the main I/O thread. I would be happy to say that the
formal model found the bug for me, but actually I wrote it after the
fact.
This patch is a bit of a big hammer. The next one optimizes it,
with help (this time for real rather than a posteriori :)) from
another, similar formal model.
Reported-by: Richard W. M. Jones <rjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Message-id: 1437487673-23740-6-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This patch rewrites the ctx->dispatching optimization, which was the cause
of some mysterious hangs that could be reproduced on aarch64 KVM only.
The hangs were indirectly caused by aio_poll() and in particular by
flash memory updates's call to blk_write(), which invokes aio_poll().
Fun stuff: they had an extremely short race window, so much that
adding all kind of tracing to either the kernel or QEMU made it
go away (a single printf made it half as reproducible).
On the plus side, the failure mode (a hang until the next keypress)
made it very easy to examine the state of the process with a debugger.
And there was a very nice reproducer from Laszlo, which failed pretty
often (more than half of the time) on any version of QEMU with a non-debug
kernel; it also failed fast, while still in the firmware. So, it could
have been worse.
For some unknown reason they happened only with virtio-scsi, but
that's not important. It's more interesting that they disappeared with
io=native, making thread-pool.c a likely suspect for where the bug arose.
thread-pool.c is also one of the few places which use bottom halves
across threads, by the way.
I hope that no other similar bugs exist, but just in case :) I am
going to describe how the successful debugging went... Since the
likely culprit was the ctx->dispatching optimization, which mostly
affects bottom halves, the first observation was that there are two
qemu_bh_schedule() invocations in the thread pool: the one in the aio
worker and the one in thread_pool_completion_bh. The latter always
causes the optimization to trigger, the former may or may not. In
order to restrict the possibilities, I introduced new functions
qemu_bh_schedule_slow() and qemu_bh_schedule_fast():
/* qemu_bh_schedule_slow: */
ctx = bh->ctx;
bh->idle = 0;
if (atomic_xchg(&bh->scheduled, 1) == 0) {
event_notifier_set(&ctx->notifier);
}
/* qemu_bh_schedule_fast: */
ctx = bh->ctx;
bh->idle = 0;
assert(ctx->dispatching);
atomic_xchg(&bh->scheduled, 1);
Notice how the atomic_xchg is still in qemu_bh_schedule_slow(). This
was already debated a few months ago, so I assumed it to be correct.
In retrospect this was a very good idea, as you'll see later.
Changing thread_pool_completion_bh() to qemu_bh_schedule_fast() didn't
trigger the assertion (as expected). Changing the worker's invocation
to qemu_bh_schedule_slow() didn't hide the bug (another assumption
which luckily held). This already limited heavily the amount of
interaction between the threads, hinting that the problematic events
must have triggered around thread_pool_completion_bh().
As mentioned early, invoking a debugger to examine the state of a
hung process was pretty easy; the iothread was always waiting on a
poll(..., -1) system call. Infinite timeouts are much rarer on x86,
and this could be the reason why the bug was never observed there.
With the buggy sequence more or less resolved to an interaction between
thread_pool_completion_bh() and poll(..., -1), my "tracing" strategy was
to just add a few qemu_clock_get_ns(QEMU_CLOCK_REALTIME) calls, hoping
that the ordering of aio_ctx_prepare(), aio_ctx_dispatch, poll() and
qemu_bh_schedule_fast() would provide some hint. The output was:
(gdb) p last_prepare
$3 = 103885451
(gdb) p last_dispatch
$4 = 103876492
(gdb) p last_poll
$5 = 115909333
(gdb) p last_schedule
$6 = 115925212
Notice how the last call to qemu_poll_ns() came after aio_ctx_dispatch().
This makes little sense unless there is an aio_poll() call involved,
and indeed with a slightly different instrumentation you can see that
there is one:
(gdb) p last_prepare
$3 = 107569679
(gdb) p last_dispatch
$4 = 107561600
(gdb) p last_aio_poll
$5 = 110671400
(gdb) p last_schedule
$6 = 110698917
So the scenario becomes clearer:
iothread VCPU thread
--------------------------------------------------------------------------
aio_ctx_prepare
aio_ctx_check
qemu_poll_ns(timeout=-1)
aio_poll
aio_dispatch
thread_pool_completion_bh
qemu_bh_schedule()
At this point bh->scheduled = 1 and the iothread has not been woken up.
The solution must be close, but this alone should not be a problem,
because the bottom half is only rescheduled to account for rare situations
(see commit 3c80ca1, thread-pool: avoid deadlock in nested aio_poll()
calls, 2014-07-15).
Introducing a third thread---a thread pool worker thread, which
also does qemu_bh_schedule()---does bring out the problematic case.
The third thread must be awakened *after* the callback is complete and
thread_pool_completion_bh has redone the whole loop, explaining the
short race window. And then this is what happens:
thread pool worker
--------------------------------------------------------------------------
<I/O completes>
qemu_bh_schedule()
Tada, bh->scheduled is already 1, so qemu_bh_schedule() does nothing
and the iothread is never woken up. This is where the bh->scheduled
optimization comes into play---it is correct, but removing it would
have masked the bug.
So, what is the bug?
Well, the question asked by the ctx->dispatching optimization ("is any
active aio_poll dispatching?") was wrong. The right question to ask
instead is "is any active aio_poll *not* dispatching", i.e. in the prepare
or poll phases? In that case, the aio_poll is sleeping or might go to
sleep anytime soon, and the EventNotifier must be invoked to wake
it up.
In any other case (including if there is *no* active aio_poll at all!)
we can just wait for the next prepare phase to pick up the event (e.g. a
bottom half); the prepare phase will avoid the blocking and service the
bottom half.
Expressing the invariant with a logic formula, the broken one looked like:
!(exists(thread): in_dispatching(thread)) => !optimize
or equivalently:
!(exists(thread):
in_aio_poll(thread) && in_dispatching(thread)) => !optimize
In the correct one, the negation is in a slightly different place:
(exists(thread):
in_aio_poll(thread) && !in_dispatching(thread)) => !optimize
or equivalently:
(exists(thread): in_prepare_or_poll(thread)) => !optimize
Even if the difference boils down to moving an exclamation mark :)
the implementation is quite different. However, I think the new
one is simpler to understand.
In the old implementation, the "exists" was implemented with a boolean
value. This didn't really support well the case of multiple concurrent
event loops, but I thought that this was okay: aio_poll holds the
AioContext lock so there cannot be concurrent aio_poll invocations, and
I was just considering nested event loops. However, aio_poll _could_
indeed be concurrent with the GSource. This is why I came up with the
wrong invariant.
In the new implementation, "exists" is computed simply by counting how many
threads are in the prepare or poll phases. There are some interesting
points to consider, but the gist of the idea remains:
1) AioContext can be used through GSource as well; as mentioned in the
patch, bit 0 of the counter is reserved for the GSource.
2) the counter need not be updated for a non-blocking aio_poll, because
it won't sleep forever anyway. This is just a matter of checking
the "blocking" variable. This requires some changes to the win32
implementation, but is otherwise not too complicated.
3) as mentioned above, the new implementation will not call aio_notify
when there is *no* active aio_poll at all. The tests have to be
adjusted for this change. The calls to aio_notify in async.c are fine;
they only want to kick aio_poll out of a blocking wait, but need not
do anything if aio_poll is not running.
4) nested aio_poll: these just work with the new implementation; when
a nested event loop is invoked, the outer event loop is never in the
prepare or poll phases. The outer event loop thus has already decremented
the counter.
Reported-by: Richard W. M. Jones <rjones@redhat.com>
Reported-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Message-id: 1437487673-23740-5-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Preparatory bugfixes and tweaks to the loop before the next patch:
- disable dispatch optimization during aio_prepare. This fixes a bug.
- do not modify "blocking" until after the first WaitForMultipleObjects
call. This is needed in the next patch.
- change the loop to do...while. This makes it obvious that the loop
is always entered at least once. In the next patch this is important
because the first iteration undoes the ctx->notify_me increment that
happened before entering the loop.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Message-id: 1437487673-23740-4-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
In these tests, the purpose of the initial calls to aio_poll and
g_main_context_iteration is simply to put the AioContext in a
known state; the return value of the function does not really
matter. The next patch will change those return values; change
the assertions to a while loop which expresses the intention
better.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Message-id: 1437487673-23740-3-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The normal value for the event is to be set. If we do not do
this, pause_all_vcpus (through qemu_clock_enable) hangs unless
timerlist_run_timers has been run at least once for the timerlist.
This can happen with the following patches, that make aio_notify do
nothing most of the time.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Message-id: 1437487673-23740-2-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
tag for qga-pull-2015-07-21
Small fix to correct schema versioning annotations for recently-added
GuestDiskBusType enum values. Not the end of the world, but ideally
this inconsistency would be corrected prior to 2.4 release.
# gpg: Signature made Tue Jul 21 20:43:24 2015 BST using RSA key ID F108B584
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>"
# gpg: aka "Michael Roth <mdroth@utexas.edu>"
# gpg: aka "Michael Roth <mdroth@linux.vnet.ibm.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D 3FA0 3353 C9CE F108 B584
* remotes/mdroth/tags/qga-pull-2015-07-21-tag:
qga: fixed versions for guest bus types in qapi-schema
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
target-arm queue:
* don't sync CNTVCT with kernel all the time (fixes VM time weirdnesses)
* fix a warning compiling disas/arm-a64 with -Wextra
# gpg: Signature made Tue Jul 21 12:15:33 2015 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
* remotes/pmaydell/tags/pull-target-arm-20150721:
disas/arm-a64: Add missing compiler attribute GCC_FMT_ATTR
target-arm: kvm: Differentiate registers based on write-back levels
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Some registers like the CNTVCT register should only be written to the
kernel as part of machine initialization or on vmload operations, but
never during runtime, as this can potentially make time go backwards or
create inconsistent time observations between VCPUs.
Introduce a list of registers that should not be written back at runtime
and check this list on syncing the register state to the KVM state.
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1437046488-10773-1-git-send-email-christoffer.dall@linaro.org
[PMM: tweaked a few comments, added the new argument to the stub
write_list_to_kvmstate() in target-arm/kvm-stub.c]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Mon Jul 20 19:27:04 2015 BST using RSA key ID AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: FAEB 9711 A12C F475 812F 18F2 88A9 064D 1835 61EB
# Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76 CBD0 7DEF 8106 AAFC 390E
* remotes/jnsnow/tags/ide-pull-request:
tests: Fix broken targets check-report-qtest-*
ahci: Force ICC bits in PxCMD to zero
qtest/ide: add another short PRDT test flavor
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
They need QTEST_QEMU_IMG. Without it, the tests raise an assertion:
$ make -C bin check-report-qtest-i386.xml
make: Entering directory 'bin'
GTESTER check-report-qtest-i386.xml
blkdebug: Suspended request 'A'
blkdebug: Resuming request 'A'
ahci-test: tests/libqos/libqos.c:162:
mkimg: Assertion `qemu_img_path' failed.
main-loop: WARNING: I/O thread spun for 1000 iterations
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1437231284-17455-1-git-send-email-sw@weilnetz.de
Signed-off-by: John Snow <jsnow@redhat.com>
Since commit 6e99c63 "net/socket: Drop net_socket_can_send" and friends,
net queues need to be explicitly flushed after qemu_can_send_packet()
returns false, because the netdev side will disable the polling of fd.
This fixes the case of "cont" after "stop" (or migration).
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1436232067-29144-1-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Convert partially summed packets to be fully checksummed.
In case csum offloaded packet, vmxnet3 implementation always passes an
RxCompDesc with the "Checksum calculated and found correct" notification
to the OS. This emulates the observed ESXi behavior.
Therefore, if packet has the NEEDS_CSUM bit set, we must calculate and
place a fully computed checksum into the tcp/udp header. Otherwise, the
OS driver will receive a checksum-correct indication but with the actual
tcp/udp checksum field having just the pseudo header csum value.
If host OS performs forwarding, it will forward an incorrectly
checksummed packet.
Signed-off-by: Dana Rubin <dana.rubin@ravellosystems.com>
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@ravellosystems.com>
Message-id: 1436864116-19154-3-git-send-email-shmulik.ladkani@ravellosystems.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The AHCI spec requires that the HBA sets the ICC bits to zero after the
ICC change is done. Since we don't do any ICC change, force the bits to
zero all the time.
This fixes delays with some OSs (e.g. OpenBSD) waiting for the ICC bits
to change to 0.
Signed-off-by: Stefan Fritsch <sf@sfritsch.de>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: E1ZFpg7-00027N-HW@eru.sfritsch.de
Signed-off-by: John Snow <jsnow@redhat.com>
The existing short PRDT test case does not transfer any data because the
first PRD is less than 1 sector.
This patch adds another short PRDT test case where the first sector can
be read but the PRDT is still smaller than the requested number of
sectors. This exercises a different code path in ide_dma_cb().
Cc: John Snow <jsnow@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1435770571-9906-1-git-send-email-stefanha@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
Commit e0cf11f31c ("timer: Use a single
definition of NSEC_PER_SEC for the whole codebase") renamed
NANOSECONDS_PER_SECOND to NSEC_PER_SEC.
On Mac OS X there is a <dispatch/time.h> system header which also
defines NSEC_PER_SEC. This causes compiler warnings.
Let's use the old name instead. It's longer but it doesn't clash.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1436364609-7929-1-git-send-email-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Block layer patches for 2.4.0-rc2
# gpg: Signature made Mon Jul 20 15:48:56 2015 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
* remotes/kevin/tags/for-upstream:
crypto: Fix aes_decrypt_wrapper()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
virtio, vhost, pc fixes for 2.4
The only notable thing here is vhost-user multiqueue
revert. We'll work on making it stable in 2.5,
reverting now means we won't have to maintain
bug for bug compability forever.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Mon Jul 20 12:24:00 2015 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
virtio-net: remove virtio queues if the guest doesn't support multiqueue
virtio-net: Flush incoming queues when DRIVER_OK is being set
pci_add_capability: remove duplicate comments
virtio-net: unbreak any layout
Revert "vhost-user: add multi queue support"
ich9: fix skipped vmstate_memhp_state subsection
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit d3462e3 broke qcow2's encryption functionality by using encrypt
instead of decrypt in the wrapper function it introduces. This was found
by qemu-iotests case 134.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
commit da51a335 adds all queues in .realize(). But if the
guest doesn't support multiqueue, we forget to remove them. And
we cannot handle the ctrl vq corretly. The guest will hang.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
This patch fixes network hang after "stop" then "cont", while network
packets keep arriving.
Tested both manually (tap, host pinging guest) and with Jason's qtest
series (plus his "[PATCH 2.4] socket: pass correct size in
net_socket_send()" fix).
As virtio_net_set_status is called when guest driver is setting status
byte and when vm state is changing, it is a good opportunity to flush
queued packets.
This is necessary because during vm stop the backend (e.g. tap) would
stop rx processing after .can_receive returns false, until the queue is
explicitly flushed or purged.
The other interesting condition in .can_receive, virtio_queue_ready(),
is handled by virtio_net_handle_rx() when guest kicks; the 3rd condition
is invalid queue index which doesn't need flushing.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Commit 032a74a1c0
("virtio-net: byteswap virtio-net header") breaks any layout by
requiring out_sg[0].iov_len >= n->guest_hdr_len. Fixing this by
copying header to temporary buffer if swap is needed, and then use
this buffer as part of out_sg.
Fixes 032a74a1c0
("virtio-net: byteswap virtio-net header")
Cc: qemu-stable@nongnu.org
Cc: clg@fr.ibm.com
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This reverts commit 830d70db69.
The interface isn't fully backwards-compatible, which is bad.
Let's redo this properly after 2.4.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
By declaring another .subsections array for vmstate_tco_io_state made
vmstate_memhp_state not registered anymore. There must be only one
.subsections array for all subsections.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Amit Shah <amit.shah@redhat.com>
Reported-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Fire timer only when required. Brings down wakeups by a big number.
# gpg: Signature made Fri Jul 17 14:41:40 2015 BST using RSA key ID 854083B6
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg: aka "Amit Shah <amit@kernel.org>"
# gpg: aka "Amit Shah <amitshah@gmx.net>"
* remotes/amit-virtio-rng/tags/vrng-2.4:
virtio-rng: trigger timer only when guest requests for entropy
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch triggers timer only when guest requests for
entropy. As soon as first request from guest for entropy
comes we set the timer. Timer bumps up the quota value
when it gets triggered.
Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1436962608-9961-2-git-send-email-pagupta@redhat.com>
[Re-worded patch subject, removed extra whitespace -- Amit]
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This reverts commit 4e8cfbe114.
We should not poll via timer, and with ccid being fixed
to properly notify us about pending transfers we don't have to.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Coverity thinks the fallthroughs are smelly. They are correct, but
everything else in this function is like "wut?".
Refer explicitly to bits 8 and 9 of hs->kbd.modifiers instead of
shifting right first and using (1 << 7). Document what the scancode
is when hid_code is 0xe0. And add plenty of comments.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Calling a function pointer that was cast from an incompatible function
results in undefined behavior. 'void *' isn't compatible with 'struct
XXX *', so we can't cast to nettle_cipher_func, but have to provide a
wrapper. (Conversion from 'void *' to 'struct XXX *' might require
computation, which won't be done if we drop argument's true type, and
pointers can have different sizes so passing arguments on stack would
bug.)
Having two different prototypes based on nettle version doesn't make
this solution any nicer.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Message-Id: <1437062641-12684-3-git-send-email-rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In nettle 3, cbc_encrypt() accepts 'nettle_cipher_func' instead of
'nettle_crypt_func' and these two differ in 'const' qualifier of the
first argument. The build fails with:
In file included from crypto/cipher.c:71:0:
./crypto/cipher-nettle.c: In function ‘qcrypto_cipher_encrypt’:
./crypto/cipher-nettle.c:154:38: error: passing argument 2 of
‘nettle_cbc_encrypt’ from incompatible pointer type
cbc_encrypt(ctx->ctx_encrypt, ctx->alg_encrypt,
^
In file included from ./crypto/cipher-nettle.c:24:0,
from crypto/cipher.c:71:
/usr/include/nettle/cbc.h:48:1: note: expected
‘void (*)(const void *, size_t, uint8_t *, const uint8_t *)
but argument is of type
‘void (*)( void *, size_t, uint8_t *, const uint8_t *)
To allow both versions, we switch to the new definition and #if typedef
it for old versions.
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Message-Id: <1436548682-9315-2-git-send-email-rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
memory_region_present() leaks a reference to a MemoryRegion in the
case "mr == container". While fixing it, avoid reference counting
altogether for memory_region_present(), by using RCU only.
The return value could in principle be already invalid immediately
after memory_region_present returns, but presumably the caller knows
that and it's using memory_region_present to probe for devices that
are unpluggable, or something like that. The RCU critical section
is needed anyway, because it protects as->current_map.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Drop from include/standard-headers/linux/input.h
Add to hw/input/virtio-input-host.c instead.
That allows to build virtio-input (except pass-through) on windows.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
commit 5cce173 introduced virtio-input segfault, This patch fixes it.
Signed-off-by: Lin Ma <lma@suse.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch allow to limit number of heads using qxl driver. By default
qxl driver is not limited on any kind on head use so can decide to use
as much heads.
libvirt has this as a video card parameter (actually set to 1 but not
used). This parameter will allow to limit setting a use can do (which
could be confusing).
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
X86 queue, 2015-07-15
Two bug fixes:
* Memory leak due to extra g_strdup() when registering X86CPU alias properties
* Fix CPUID levels so that W10 insider can run as guest OS
# gpg: Signature made Wed Jul 15 21:26:59 2015 BST using RSA key ID 984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/x86-pull-request:
target-i386: emulate CPUID level of real hardware
target-i386: Don't strdup() alias property name
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
NUMA queue, 2015-07-15
# gpg: Signature made Wed Jul 15 21:01:37 2015 BST using RSA key ID 984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/numa-pull-request:
numa: Fix memory leak in numa_set_mem_node_id()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
W10 insider has a bug where it ignores CPUID level and interprets
CPUID.(EAX=07H, ECX=0H) incorrectly, because CPUID in fact returned
CPUID.(EAX=04H, ECX=0H); this resulted in execution of unsupported
instructions.
While it's a Windows bug, there is no reason to emulate incorrect level.
I used http://instlatx64.atw.hu/ as a source of CPUID and checked that
it matches Penryn Xeon X5472, Westmere Xeon W3520, SandyBridge i5-2540M,
and Haswell i5-4670T.
kvm64 and qemu64 were bumped to 0xD to allow all available features for
them (and to avoid the same Windows bug).
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Now object_property_add_alias() calls g_strdup() on the target property
name, so we don't need to call g_strdup() ourselves.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The Linux kernel on aarch64 creates a page table entry at early bootup
that spans the 2MB range on memory spanning the fdt start address:
[ ALIGN_DOWN(fdt, 2MB) ... ALIGN_DOWN(fdt, 2MB) + 2MB ]
This means that when our current 4k alignment happens to fall at the end
of the aligned region, Linux tries to access memory that is not mapped.
The easy fix is to instead increase the alignment to 2MB, making Linux's
logic always succeed.
We leave the existing 4k alignment for 32bit kernels to not cause any
regressions due to space constraints.
Reported-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The SCTLR_EL3 cpreg definition was implicitly resetting the
register state to 0, which is both wrong and clashes with
the reset done via the SCTLR definition (since sctlr[3]
is unioned with sctlr_s). This went unnoticed until recently,
when an unrelated change (commit a903c449b4) happened to
perturb the order of enumeration through the cpregs hashtable for
reset such that the erroneous reset happened after the correct one
rather than before it. Fix this by marking SCTLR_EL3 as an alias,
so its reset is left up to the AArch32 view.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
# gpg: Signature made Wed Jul 15 03:25:16 2015 BST using RSA key ID C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg: aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg: aka "Jeffrey Cody <codyprime@gmail.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 9957 4B4D 3474 90E7 9D98 D624 BDBE 7B27 C0DE 3057
* remotes/cody/tags/jtc-for-upstream-pull-request:
block/curl: Don't lose original error when a connection fails.
mirror: correct buf_size
block: keep bitmap if incremental backup job is cancelled
blockdev: no need to drain in qmp_block_commit
block/mirror: Sleep periodically during bitmap scanning
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When a LWL, LWR, LDL or LDR instruction triggers a page fault, QEMU
currently reports the aligned address in CP0 BadVAddr, while the Windows
NT kernel expects the unaligned address.
This patch adds a byte access with the unaligned address at the
beginning of the LWL/LWR/LDL/LDR instructions to possibly trigger a page
fault and fill the QEMU TLB.
Cc: Leon Alrae <leon.alrae@imgtec.com>
Reported-by: Hervé Poussineau <hpoussin@reactos.org>
Tested-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
For the MIPS N64 ABI when QEMU reads the break/trap instruction so that
it can inspect the break/trap code it reads 8 rather than 4 bytes
which means it finds the code field from the instruction after the
break/trap instruction. This then causes the break/trap handling
code to fail because it does not understand the code number.
The fix forces QEMU to always read 4 bytes of instruction data rather
than deciding how much to read based on the ABI.
Signed-off-by: Andrew Bennett <andrew.bennett@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
UHI assert and link operations call lock_user_string() twice to obtain two
strings pointed by gpr[4] and gpr[5]. If the second lock_user_string()
fails, then the first one won't get freed. Fix this by introducing another
macro responsible for obtaining two strings and handling allocation
failure.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Fix Debug Mode flag clearing, and when DERET is placed between LL and SC
do not make SC fail.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
MSACSR.Cause bits are needed to be cleared before a vector floating-point
instructions.
FEXDO.df, FEXUPL.df and FEXUPR.df were missed out.
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Fix core configuration for MIPS64R6-generic to make it as close as
I6400.
I6400 core has 48-bit of Virtual Address available (SEGBITS).
MIPS SIMD Architecture is available.
Rearrange order of bits to match the specification.
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
migration/next for 20150715
# gpg: Signature made Wed Jul 15 11:23:33 2015 BST using RSA key ID 5872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg: aka "Juan Quintela <quintela@trasno.org>"
* remotes/juanquintela/tags/migration/20150715-1:
migration: We also want to store the global state for savevm
migration: reduce the count of strlen call
migration: Register global state section before loadvm
migration: Write documetation for events capabilites
migration: Trace event and migration event are different things
migration: Only change state after migration has finished
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit df4b102452 introduced global_state
section. But it only filled the state while doing migration. While
doing a savevm, we stored an empty string as state. So when we did a
loadvm, it complained that state was invalid.
Fedora 21, 4.1.1, qemu 2.4.0-rc0
> ../../configure --target-list="x86_64-softmmu"
068 2s ... - output mismatch (see 068.out.bad)
--- /home/bos/jhuston/src/qemu/tests/qemu-iotests/068.out 2015-07-08
17:56:18.588164979 -0400
+++ 068.out.bad 2015-07-09 17:39:58.636651317 -0400
@@ -6,6 +6,8 @@
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm 0
(qemu) quit
+qemu-system-x86_64: Unknown savevm section or instance 'globalstate' 0
+qemu-system-x86_64: Error -22 while loading VM state
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
*** done
Failures: 068
Failed 1 of 1 tests
Actually, there were two problems here:
- we registered global_state too late for load_vm (fixed on another
patch on the list)
- we didn't store a valid state for savevm (fixed by this patch).
Reported-by: John Snow <jsnow@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
On previous change, we changed state at post load time if it was not
running, special casing the "running" change. Now, we change any states
at the end of the migration.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Currently if qemu is connected to a curl source (eg. web server), and
the web server fails / times out / dies, you always see a bogus EIO
"Input/output error".
For example, choose a large file located on any local webserver which
you control:
$ qemu-img convert -p http://example.com/large.iso /tmp/test
Once it starts copying the file, stop the webserver and you will see
qemu-img fail with:
qemu-img: error while reading sector 61440: Input/output error
This patch does two things: Firstly print the actual error from curl
so it doesn't get lost. Secondly, change EIO to EPROTO. EPROTO is a
POSIX.1 compatible errno which more accurately reflects that there was
a protocol error, rather than some kind of hardware failure.
After this patch is applied, the error changes to:
$ qemu-img convert -p http://example.com/large.iso /tmp/test
qemu-img: curl: transfer closed with 469989 bytes remaining to read
qemu-img: error while reading sector 16384: Protocol error
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
If bus_size is less than 0, the command fails.
If buf_size is 0, use DEFAULT_MIRROR_BUF_SIZE.
If buf_size % granularity is not 0, mirror_free_init() will
do dangerous things.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 5555A588.3080907@cn.fujitsu.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
Draining is not necessary, I/O can happen as soon as the
commit coroutine yields. Draining can be necessary before
reopening the file for read/write, or while modifying the
backing file chain, but that is done separately in
bdrv_reopen_multiple or bdrv_close; this particular
bdrv_drain_all does nothing for that.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1432822903-25821-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
commit 213941d73b ("virtio-ccw: migrate ->revision") broke
migration:
2015-07-07T11:22:55.570968Z qemu-system-s390x: VQ 39 address 0x0 inconsistent with Host index 0x100
2015-07-07T11:22:55.571008Z qemu-system-s390x: error while loading state for instance 0x0 of
If thinint support is active, the config_load function returns early.
Make sure to load the revision all the time.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Fixes: 213941d73b ("virtio-ccw: migrate ->revision")
Message-Id: <1436269643-66303-1-git-send-email-borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
The diag288 watchdog is no sysbus device, therefore it doesn't get
triggered on resets automatically using dc->reset.
Let's register the reset handler manually, so we get correctly notified
again when a system reset was requested. Also reset the watchdog on
subsystem resets that don't trigger a full system reset.
Signed-off-by: Xu Wang <gesaint@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Apply the ceph settings from a config file before any ceph settings
from the command line. Since the ceph config file location may be
specified on the command line, parse it once to read the config file,
and do a second pass to apply the rest of the command line ceph
options.
Signed-off-by: Josh Durgin <jdurgin@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
To be safe, when cache=none is used ceph settings should not be able
to override it to turn on caching. This was previously possible with
rbd_cache=true in the rbd device configuration or a ceph configuration
file. Similarly, rbd settings could have turned off caching when qemu
requested it, although this would just be a performance problem.
Fix this by changing rbd's cache setting to match qemu after all other
ceph settings have been applied.
Signed-off-by: Josh Durgin <jdurgin@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
RBDAIOCB.status was only used for cancel, which was removed in
7691e24dbe.
RBDAIOCB.sector_num was never used.
RADOSCB.done and rcbid were never used.
RBD_FD* are obsolete since the pipe was removed in
e04fb07fd1.
Signed-off-by: Josh Durgin <jdurgin@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This patch moves bdrv_attach_child() from the individual places that add
a backing file to a BDS to bdrv_set_backing_hd(), which is called by all
of them. It also adds bdrv_detach_child() there.
For normal operation (starting with one backing file chain and not
changing it until the topmost image is closed) and live snapshots, this
constitutes no change in behaviour.
For all other cases, this is a fix for the bug that the old backing file
was still referenced as a child, and the new one wasn't referenced.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Block drivers may still want to access their child nodes in their
.bdrv_close handler. If they unref and/or detach a child by themselves,
this should not result in a double free.
There is additional code for backing files, which are just a special
case of child nodes. The same applies for them.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This is the counterpart for bdrv_open_child(). It decreases the
reference count of the child BDS and removes it from the list of
children of the given parent BDS.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
It is the same as bdrv_open_image(), except that it doesn't only return
success or failure, but the newly created BdrvChild object for the new
child node.
As the BdrvChild object already contains a BlockDriverState pointer (and
this is supposed to become the only pointer so that bdrv_append() and
friends can just change a single pointer in BdrvChild), the pbs
parameter is removed for bdrv_open_child().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Let the callers of bdrv_open_inherit() call bdrv_attach_child(). It
needs to be called in all cases where bdrv_open_inherit() succeeds (i.e.
returns 0) and a child_role is given.
bdrv_attach_child() is moved upwards to avoid a forward declaration.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Implement support in Identify and Get/Set Features to properly report
and allow to change the Volatile Write Cache status reported by the
virtual NVMe device.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Implement a real flush instead of faking it. This is especially important
as Qemu assume Write back cashing by default and thus requires a working
cache flush operation for data integrity.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Commit 800567a61 updated the code to the generic crypto API
and mixed up encrypt and decrypt functions in
procotol_client_auth_vnc.
(Used to be: deskey(key, EN0) which encrypts, and was
changed to qcrypto_cipher_decrypt in 800567a61.)
Changed it to qcrypto_cipher_encrypt now.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
pc,virtio: fixes for 2.4
pc and virtio changes, bugfixes only.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Mon Jul 13 13:03:38 2015 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
pc: fix reuse of pc-i440fx-2.4 in pc-i440fx-2.3
Revert "virtio-net: enable virtio 1.0"
virtio-pci: don't crash on illegal length
qdev: fix 64 bit properties
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
commit fddd179ab9,
"pc: Convert *_MACHINE_OPTIONS macros into functions"
broke the chaining of *_machine_options() functions on
pc-i440fx-2.3, at:
-#define PC_I440FX_2_3_MACHINE_OPTIONS \
- PC_I440FX_2_4_MACHINE_OPTIONS, \
- .alias = NULL, \
- .is_default = 0
+static void pc_i440fx_2_3_machine_options(QEMUMachine *m)
+{
+ pc_i440fx_machine_options(m);
+ m->alias = NULL;
+ m->is_default = 0;
+}
I have replaced PC_I440FX_2_4_MACHINE_OPTIONS with a
pc_i440fx_machine_options() call, instead of calling
pc_i440fx_2_4_machine_options(). This broke the setting of default_machine_opts
and default_display on pc-i440fx-{2.0,2,1,2.2,2.3}.
Fix this by making pc_i440fx_2_3_machine_options() reuse
pc_i440fx_2_4_machine_options().
Reported-by: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This reverts commit df91055db5.
This is because:
- vhost support virtio 1.0 now
- transport code (e.g virtio-pci) set this feature when modern is
enabled, setting this unconditionally will break disable-modern=on.
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Some guests seem to access cfg with an illegal length value.
It's worth fixing them but debugging is easier if
qemu does not crash.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
64 bit props used 32 bit callbacks in two places, leading to broken
feature bits on virtio (example: got 0x31000000000006d4 which is
obviously bogus). Fix this.
Fixes: fdba6d96 ("qdev: add 64bit properties")
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Compilation of TCI was accidentally broken by the recent disassembler
changes:
CC x86_64-softmmu/arch_init.o
In file included from target-i386/cpu-qom.h:23:0,
from target-i386/cpu.h:986,
from include/qemu-common.h:122,
from include/disas/bfd.h:12,
from disas/tci.c:20:
include/qom/cpu.h:178:43: error: unknown type name ‘disassemble_info’
void (*disas_set_info)(CPUState *cpu, disassemble_info *info);
^
include/qom/cpu.h:179:1: error:
no semicolon at end of struct or union [-Werror]
} CPUClass;
^
cc1: all warnings being treated as errors
The underlying cause of this is an include loop:
bfd.h -> qemu-common.h -> target-arm/cpu.h -> target-arm/cpu-qom.h
-> qom/cpu.h -> bfd.h
which means that if bfd.h is included first then qom/cpu.h doesn't
get the definition of the disassemble_info type that it wanted.
The easiest fix for this is to include qemu-common.h from tci.c
before including disas/bfd.h.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fixes for two bad bugs. For 2.4-rc0.
# gpg: Signature made Thu Jul 9 15:54:19 2015 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream:
crypto: fix builtin qcrypto_cipher_free
migration: fix RCU deadlock
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
QOM CPUState and X86CPU
* Further QOM'ification of CPU initialization
* Propagation of CPUState arguments and elimination of ENV_GET_CPU() usage
* cpu_set_pc() abstraction
* CPUClass::disas_set_info() hook
# gpg: Signature made Thu Jul 9 14:23:12 2015 BST using RSA key ID 3E7E013F
# gpg: Good signature from "Andreas Färber <afaerber@suse.de>"
# gpg: aka "Andreas Färber <afaerber@suse.com>"
* remotes/afaerber/tags/qom-cpu-for-peter: (22 commits)
disas: cris: QOMify target specific disas setup
disas: cris: Fix 0 buffer length case
disas: microblaze: QOMify target specific disas setup
disas: arm: QOMify target specific disas setup
disas: arm-a64: Make printfer and stream variable
disas: QOMify target specific setup
disas: Add print_insn to disassemble info
microblaze: boot: Use cpu_set_pc()
hw/arm/boot: Use cpu_set_pc()
gdbstub: Use cpu_set_pc() helper
cpu: Add wrapper for the set_pc() hook
cpu-exec: Purge all uses of ENV_GET_CPU()
cpu: Change cpu_exec_init() arg to cpu, not env
cpu: Change tcg_cpu_exec() arg to cpu, not env
gdbstub: Change gdbserver_fork() to accept cpu instead of env
translate-all: Change tb_flush() env argument to cpu
target-ppc: Move cpu_exec_init() call to realize function
cpu: Convert cpu_index into a bitmap
cpu: Add Error argument to cpu_exec_init()
cpu: Reorder cpu->as, cpu->thread_id, cpu->memory_dispatch init
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Move the target_disas() cris specifics to the QOM disas_set_info() hook
and delete the cris specific code in disas.c.
This also now adds support for monitor_disas() to cris.
E.g.
(qemu) xp 0x40004000
0000000040004000: 0x1e6f25f0
And before this patch:
(qemu) xp/i 0x40004000
0x40004000: Asm output not supported on this arch
After:
(qemu) xp/i 0x40004000
0x40004000: di
(qemu) xp/i 0x40004002
0x40004002: move.d 0xb003c004,$r1
Note: second example is 6-byte misaligned instruction!
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Cris has the complication of variable length instructions and has
a check in place to clamp memory reads in case the disas request
doesn't have enough bytes for the instruction being disas'd. This
breaks down in the case where disassembling for the monitor where
the buffer length is defaulted to 0.
The buffer length should never be zero for a regular target_disas,
so we can safely assume the 0 case is for the monitor in which case
consider the buffer length to be the max for cris instructions.
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Move the target_disas() MB specifics to the QOM disas_set_info hook
and delete the MB specific code in disas.c.
This also now adds support for monitor_disas() to Microblaze.
E.g.
(qemu) xp 0x90000000
0000000090000000: 0x94208001
And before this patch:
(qemu) xp/i 0x90000000
0x90000000: Asm output not supported on this arch
After:
(qemu) xp/i 0x90000000
0x90000000: mfs r1, rmsr
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Move the target_disas() ARM specifics to the QOM disas_set_info hook
and delete the ARM specific code in disas.c.
This has the extra advantage of the more fully featured target_disas()
implementation now applying to monitor_disas().
Currently, target_disas() has multi-endian, thumb and AArch64
support whereas the existing monitor_disas() support only has vanilla
AA32 support.
E.G. Running an AA64 linux kernel the following -d in_asm disas happens
(taget_disas()):
IN:
0x0000000040000000: 580000c0 ldr x0, pc+24 (addr 0x40000018)
0x0000000040000004: aa1f03e1 mov x1, xzr
However before this patch, disasing the same from the monitor:
(qemu) xp/i 0x40000000
0x0000000040000000: 580000c0 stmdapl r0, {r6, r7}
After this patch:
(qemu) xp/i 0x40000000
0x0000000040000000: 580000c0 ldr x0, pc+24 (addr 0x40000018)
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
In a normal disassembly flow, the printf() and stream being used varies
from disas job to job. In particular it varies if mixing monitor_disas
and target_disas.
Make both the printf() function and target stream settable in the
QEMUDisassmbler class.
Reviewed-by: Claudio Fontana <claudio.fontana@huawei.com>
Tested-by: Claudio Fontana <claudio.fontana@huawei.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Add a QOM function hook for target-specific disassembly setup. This
allows removal of the #ifdeffery currently implementing target specific
disas setup from disas.c.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Add the print_insn pointer to the disassemble info structure. This is
to prepare for QOMification support, where a QOM CPU hook function will
be responsible for setting the print_insn() function. Add this function
to the existing struct to consolidate such that only the one struct
needs to be passed to the new QOM API.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Use cpu_set_pc() for setting program counters when bootloading. This
removes an instance of system level code having to reach into the CPU
env.
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
[AF: Avoid duplicated CPU() casts through local variable]
Signed-off-by: Andreas Färber <afaerber@suse.de>
Use cpu_set_pc() across the board for setting program counters. This
removes instances of system level code having to reach into the CPU
env.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
[AF: Avoid repeated casts with local variables]
Signed-off-by: Andreas Färber <afaerber@suse.de>
Use the cpu_set_pc() helper which will take care of CPUClass retrieval
for us.
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Remove un-needed usages of ENV_GET_CPU() by converting the APIs to use
CPUState pointers and retrieving the env_ptr as minimally needed.
Scripted conversion for target-* change:
for I in target-*/cpu.h; do
sed -i \
's/\(^int cpu_[^_]*_exec(\)[^ ][^ ]* \*s);$/\1CPUState *cpu);/' \
$I;
done
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
The sole caller of this function navigates the cpu->env_ptr only for
this function to take it back the cpu pointer straight away. Pass in
cpu pointer instead and grab the env pointer locally in the function.
Removes a core code usage of ENV_GET_CPU().
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
All callsites to this function navigate the cpu->env_ptr only for the
function to take the env ptr back to the original cpu ptr. Change the
function to just pass in the CPU pointer instead. Removes a core code
usage of ENV_GET_CPU() (in gdbstub.c).
Cc: Riku Voipio <riku.voipio@iki.fi>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
All of the core-code usages of this API have the cpu pointer handy so
pass it in. There are only 3 architecture specific usages (2 of which
are commented out) which can just use ENV_GET_CPU() locally to get the
cpu pointer. The reduces core code usage of the CPU env, which brings
us closer to common-obj'ing these core files.
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Move cpu_exec_init() call from instance_init to realize. This allows
any failures from cpu_exec_init() to be handled appropriately.
Also add corresponding cpu_exec_exit() call from unrealize.
cpu_dt_id assignment from instance_init is no longer needed since
correct assignment for cpu_dt_id is already present in realizefn.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
[AF: Keep calling cpu_exec_init() for CONFIG_USER_ONLY]
Signed-off-by: Andreas Färber <afaerber@suse.de>
Currently CPUState::cpu_index is monotonically increasing and a newly
created CPU always gets the next higher index. The next available
index is calculated by counting the existing number of CPUs. This is
fine as long as we only add CPUs, but there are architectures which
are starting to support CPU removal, too. For an architecture like PowerPC
which derives its CPU identifier (device tree ID) from cpu_index, the
existing logic of generating cpu_index values causes problems.
With the currently proposed method of handling vCPU removal by parking
the vCPU fd in QEMU
(Ref: http://lists.gnu.org/archive/html/qemu-devel/2015-02/msg02604.html),
generating cpu_index this way will not work for PowerPC.
This patch changes the way cpu_index is handed out by maintaining
a bit map of the CPUs that tracks both addition and removal of CPUs.
The CPU bitmap allocation logic is part of cpu_exec_init(), which is
called by instance_init routines of various CPU targets. Newly added
cpu_exec_exit() API handles the deallocation part and this routine is
called from generic CPU instance_finalize.
Note: This new CPU enumeration is for !CONFIG_USER_ONLY only.
CONFIG_USER_ONLY continues to have the old enumeration logic.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
[AF: max_cpus -> MAX_CPUMASK_BITS]
Signed-off-by: Andreas Färber <afaerber@suse.de>
Add an Error argument to cpu_exec_init() to let users collect the
error. This is in preparation to change the CPU enumeration logic
in cpu_exec_init(). With the new enumeration logic, cpu_exec_init()
can fail if cpu_index values corresponding to max_cpus have already
been handed out.
Since all current callers of cpu_exec_init() are from instance_init,
use error_abort Error argument to abort in case of an error.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Instead of initializing cpu->as, cpu->thread_id, and reloading memory
map while holding cpu_list_lock(), do it earlier, before locking the CPU
list and initializing cpu_index.
This allows the code handling cpu_index and global CPU list to be
isolated from the rest.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
QOM objects are already zero-filled when instantiated, there's no need
to explicitly set numa_node to 0.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
The KVM_REG_MIPS_COUNT_* definitions are now included in
linux-headers/asm-mips/kvm.h since commit b061808d39 ("linux-headers:
update linux headers to kvm/next"), therefore the duplicate definitions
in target-mips/kvm.c can now be dropped (the definitions were tweaked
slightly in commit 7a52ce8a16 ("linux-headers: update") which
triggered the following build warnings turned errors):
target-mips/kvm.c:232:0: error: "KVM_REG_MIPS_COUNT_CTL" redefined [-Werror]
linux-headers/asm/kvm.h:129:0: note: this is the location of the previous definition
target-mips/kvm.c:236:0: error: "KVM_REG_MIPS_COUNT_RESUME" redefined [-Werror]
linux-headers/asm/kvm.h:141:0: note: this is the location of the previous definition
target-mips/kvm.c:239:0: error: "KVM_REG_MIPS_COUNT_HZ" redefined [-Werror]
linux-headers/asm/kvm.h:147:0: note: this is the location of the previous definition
Also update the MIPS_C0_{32,64} macros to utilise definitions more
recently added to the asm-mips/kvm.h header.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Message-id: 1436433435-24898-3-git-send-email-james.hogan@imgtec.com
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: kvm@vger.kernel.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit 3972ef6f83 ("tcg: Push merged memop+mmu_idx parameter to
softmmu routines") caused the following build errors when building TCG
for MIPS:
In file included from tcg/tcg.c:258:0:
tcg/mips/tcg-target.c In function ‘tcg_out_qemu_ld_slow_path’:
tcg/mips/tcg-target.c:1015:22: error: ‘lb’ undeclared (first use in this function)
tcg/mips/tcg-target.c In function ‘tcg_out_qemu_st_slow_path’:
tcg/mips/tcg-target.c:1058:22: error: ‘lb’ undeclared (first use in this function)
It looks like lb was meant to refer to the TCGLabelQemuLdst *l
parameter, so fix both references to lb to refer to just l.
Fixes: 3972ef6f83 ("tcg: Push merged memop+mmu_idx parameter to softmmu routines")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Message-id: 1436433435-24898-2-git-send-email-james.hogan@imgtec.com
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
migration_end calls synchronize_rcu() within a critical section.
That causes a deadlock; move the call after rcu_read_unlock().
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Bugfixes and Daniel Berrange's crypto library.
# gpg: Signature made Wed Jul 8 12:12:29 2015 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream:
ossaudio: fix memory leak
ui: convert VNC to use generic cipher API
block: convert qcow/qcow2 to use generic cipher API
ui: convert VNC websockets to use crypto APIs
block: convert quorum blockdrv to use crypto APIs
crypto: add a nettle cipher implementation
crypto: add a gcrypt cipher implementation
crypto: introduce generic cipher API & built-in implementation
crypto: move built-in D3DES implementation into crypto/
crypto: move built-in AES implementation into crypto/
crypto: introduce new module for computing hash digests
vl: move rom_load_all after machine init done
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Wed Jul 8 19:08:28 2015 BST using RSA key ID AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: FAEB 9711 A12C F475 812F 18F2 88A9 064D 1835 61EB
# Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76 CBD0 7DEF 8106 AAFC 390E
* remotes/jnsnow/tags/ide-pull-request:
ahci: Fix CD-ROM signature
libqos/ahci: fix ahci_write_fis for ncq on ppc64
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
pc,virtio,pci: fixes and updates
Most notably, this includes the TCO support for ICH: the last feature for 2.4
as we are entering the hard freeze.
Bugfixes only from now on.
virtio pci also gained cfg access capability - arguably a bugfix
since virtio spec makes it mandatory, but it's a big patch.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Wed Jul 8 10:40:07 2015 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
tco-test: fix up config accesses and re-enable
virtio fix cfg endian-ness for BE targets
virtio-pci: implement cfg capability
virtio: define virtio_pci_cfg_cap in header.
pcie: Set the "link active" in the link status register
pci_regs.h: import from linux
virtio_net: reuse constants from linux
hw/i386/pc: don't carry FDC from pc_basic_device_init() to pc_cmos_init()
hw/i386/pc: reflect any FDC @ ioport 0x3f0 in the CMOS
hw/i386/pc: factor out pc_cmos_init_floppy()
ich9: implement strap SPKR pin logic
tests: add testcase for TCO watchdog emulation
ich9: add TCO interface emulation
acpi: split out ICH ACPI support
Revert "dataplane: allow virtio-1 devices"
dataplane: fix cross-endian issues
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
tag for qga-pull-2015-07-06-v3
v3:
- fix missing <windows.h> in configure test program.
v2:
- added configure check for guest-get-fs-info to avoid breakage on older
MinGWs
- removed extraneous include of ws2ipdef.h in w32
guest-network-get-interfaces. ws2tcpip.h already provides those
definitions, and older MinGWs don't have it.
- rebased on latest master
# gpg: Signature made Wed Jul 8 03:01:18 2015 BST using RSA key ID F108B584
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>"
# gpg: aka "Michael Roth <mdroth@utexas.edu>"
# gpg: aka "Michael Roth <mdroth@linux.vnet.ibm.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D 3FA0 3353 C9CE F108 B584
* remotes/mdroth/tags/qga-pull-2015-07-06-v3-tag:
qga: added GuestPCIAddress information
qga: added bus type and disk location path
configure: add configure check for ntdddisk.h
qga: added mountpoint and filesystem type for single volume
qga: added empty qmp_quest_get_fsinfo functionality.
qga: fail early for invalid time
qga: win32 qmp_guest_network_get_interfaces implementation
qga: add win32 library iphlpapi
Revert "guest agent: remove g_strcmp0 usage"
qga/qmp_guest_fstrim: Return per path fstrim result
qga/commands-posix: Fix bug in guest-fstrim
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Remove the direct use of gnutls for hash processing in the
websockets code, in favour of using the crypto APIs. This
allows the websockets code to be built unconditionally
removing countless conditional checks from the VNC code.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1435770638-25715-9-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Get rid of direct use of gnutls APIs in quorum blockdrv in
favour of using the crypto APIs. This avoids the need to
do conditional compilation of the quorum driver. It can
simply report an error at file open file instead if the
required hash algorithm isn't supported by QEMU.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1435770638-25715-8-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If we are linking to gnutls already and gnutls is built against
nettle, then we should use nettle as a cipher backend in
preference to our built-in backend.
This will be used when linking against some GNUTLS 2.x versions
and all GNUTLS 3.x versions.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1435770638-25715-7-git-send-email-berrange@redhat.com>
[Change "#elif" to "#elif defined". - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If we are linking to gnutls already and gnutls is built against
gcrypt, then we should use gcrypt as a cipher backend in
preference to our built-in backend.
This will be used when linking against GNUTLS 1.x and many
GNUTLS 2.x versions.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1435770638-25715-6-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Introduce a generic cipher API and an implementation of it that
supports only the built-in AES and DES-RFB algorithms.
The test suite checks the supported algorithms + modes to
validate that every backend implementation is actually correctly
complying with the specs.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1435770638-25715-5-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The mistake that made the test fail was that it tried to
use a BAR address as an offset for config accesses to LPC.
Config accesses don't need a BAR, and LPC does not have one. Don't
attempt to map it.
With this change applied, TCO test passes, so re-enable it.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
address_space_rw assumes data is in target format
and byte-swaps it if target is BE and device is LE.
Use fixed-endian LE APIs instead.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
spec says we must, so let's do it!
Note: the implementation is incorrect for BE targets.
Will fix with a patch on top, not a big deal now as
the only user is seabios, used on x86 only.
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Update virtio pci header from linux-next virtio maintainer tree.
We already have VIRTIO_PCI_CAP_PCI_CFG, let's define the structure
that goes with it.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Some firmwares can test that and assume the device hasn't come
up if that bit isn't set
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
It seems to make sense to import pci_regs.h from linux:
why maintain our own?
As a first step, move the header to standard-headers,
and add it to the update script.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Thanks to the last patch, pc_cmos_init() doesn't need the (optional)
board-default FDC any longer as an input parameter. Update
pc_basic_device_init() not to hand it back to pc_init1() / pc_q35_init(),
and update the latter not to carry the FDC to pc_cmos_init(). This
simplifies the code.
pc_init1() | pc_q35_init()
pc_basic_device_init()
pc_cmos_init()
Cc: Jan Tomko <jtomko@redhat.com>
Cc: John Snow <jsnow@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
With the pc-q35-2.4 machine type, if the user creates an ISA FDC manually:
-device isa-fdc,driveA=drive-fdc0-0-0 \
-drive file=...,if=none,id=drive-fdc0-0-0,format=raw
then the board-default FDC will be skipped, and only the explicitly
requested FDC will exist. qtree-wise, this is correct; however such an FDC
is currently not registered in the CMOS, because that code is only reached
for the board-default FDC.
The pc_cmos_init_late() one-shot reset handler -- one-shot because the
CMOS is not reprogrammed during warm reset -- should search for any ISA
FDC devices, created implicitly (by board code) or explicitly, and set the
CMOS accordingly to the ISA FDC(s) with iobase=0x3f0:
- if there is no such FDC, report both drives absent,
- if there is exactly one such FDC, report its drives in the CMOS,
- if there are more than one such FDCs, then pick one (it is not specified
which one), and print a warning about the ambiguity.
Cc: Jan Tomko <jtomko@redhat.com>
Cc: John Snow <jsnow@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Reported-by: Jan Tomko <jtomko@redhat.com>
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Extract the pc_cmos_init_floppy() function from pc_cmos_init(). The
function sets two RTC registers: floppy drive types (0x10), overwriting
the earlier value in there), and REG_EQUIPMENT_BYTE (0x14), setting bits
in the prior value.
Cc: Jan Tomko <jtomko@redhat.com>
Cc: John Snow <jsnow@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
If the signal is sampled high, this indicates that the system is
strapped to the "No Reboot" mode (ICH9 will disable the TCO Timer system
reboot feature). The status of this strap is readable via the NO_REBOOT
bit (CC: offset 0x3410:bit 5).
The NO_REBOOT bit is set when SPKR pin on ICH9 is sampled high. This bit
may be set or cleared by software if the strap is sampled low but may
not override the strap when it indicates "No Reboot".
This patch implements the logic where hardware has ability to set SPKR
pin through a property named "noreboot" and it's sampled high by
default.
Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch adds a testcase that covers the following:
1) TCO default values
2) first and second TCO timeout
3) watch and validate ticks counter through TCO_RLD register
4) maximum supported TCO timeout (0x3ff)
5) watchdog actions (pause/reset/shutdown/none) upon second TCO
timeout
6) set and get of TCO control and status bits
MST: The test does not pass yet, so it's disabled by default.
Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
PCIAddress inforfation is obtained via SetupApi, which provides the
information about address, bus, etc. We look throught entire device tree
in the system and try to find device object for given volume. For this PDO
SetupDiGetDeviceRegistryProperty is called, which reads PCI configuration
for a given devicei if it is possible.
This is the most convinient way for a userspace service. The lookup is
performed for every volume available. However, this information is
not mandatory for vss-provider.
In order to use SetupApi we need to notify linker about it. We do not need
to install additional libs, so we do not make separate configuration
option to use libsetupapi.su
SetupApi gives as the same information as kernel driver
with IRP_MN_QUERY_INTERFACE.
https://support.microsoft.com/en-us/kb/253232
Signed-off-by: Olga Krishtal <okrishtal@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Eric Blake <eblake@redhat.com>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
* stub out get_pci_info if !CONFIG_QGA_NTDDSCSI
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
According to Microsoft disk location path can be obtained via
IOCTL_SCSI_GET_ADDRESS. Unfortunately this ioctl can not be used for all
devices. There are certain bus types which could be obtained with this
API. Please, refer to the following link for more details
https://technet.microsoft.com/en-us/library/ee851589(v=ws.10).aspx
Bus type could be obtained using IOCTL_STORAGE_QUERY_PROPERTY. Enum
STORAGE_BUS_TYPE describes all buses supported by OS.
Windows defines more bus types than Linux. Thus some values have been added
to GuestDiskBusType.
Signed-off-by: Olga Krishtal <okrishtal@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Eric Blake <eblake@redhat.com>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
* fixed warning in CreateFile due to use of NULL instead of 0
* only provide disk info when CONFIG_QGA_NTDDSCSI=y
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This header file provides w32 ioctl definitions for working with disk
devices. Older versions of mingw do not expose this in a useable way,
so add a configure check and report it via CONFIG_QGA_NTDDSCSI.
Subsequent patches will use this macro to stub out functionality that
relies on this in cases where it's not available.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
We should use GetVolumeXXX api to work with volumes. This will help us to
resolve the situation with volumes without drive letter, i.e. when the
volume is mounted as a folder. Such volume is called mounted folder.
This volume is a regular mounted volume from all other points of view.
The information about non mounted volume is reported as System Reserved.
This volume is not mounted and thus it is not writable.
GuestDiskAddressList API is not used because operations are performed with
volumes but no with disks. This means that spanned disk will
be counted and handled as a single volume. It is worth mentioning
that the information about every disk in the volume can be queried
via IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS.
Signed-off-by: Olga Krishtal <okrishtal@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Eric Blake <eblake@redhat.com>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
We need qmp_quest_get_fsinfo togather with vss-provider, which works with
volumes. The call to this function is implemented via
FindFirst/NextVolumes. Moreover, volumes in Windows OS are filesystem unit,
so it will be more effective to work with them rather with devices.
Signed-off-by: Olga Krishtal <okrishtal@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Eric Blake <eblake@redhat.com>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
It's possible to set system time with dates after 2070, however, it's
not possible to set the RTC. It has limitation to up to year
2070 (1970+100). In order to keep both clock in sync and before the
kernel complains on invalid values, bail out early.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
By default, IPv4 prefixes will be derived by matching the address
to those returned by GetAdaptersInfo. IPv6 prefixes can not be
matched this way due to the unpredictable order of entries.
In Windows Vista/2008 guests and newer, both IPv4 and IPv6 prefixes
can be retrieved from OnLinkPrefixLength. Setting --extra-cflags
in the build configuration to "-D_WIN32_WINNT=0x600"
or greater makes OnLinkPrefixLength available. Setting --extra-cflags
is not required and if not set, the default approach to get the prefix
will be taken.
Signed-off-by: Kirk Allan <kallan@suse.com>
* drop ws2ipdef.h, it's missing on old mingw, and ws2tcpip.h already
includes it automatically on new builds
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Add the iphlpapi library to use APIs such as GetAdaptersInfo and
GetAdaptersAddresses.
Signed-off-by: Kirk Allan <kallan@suse.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Since we now require GLib 2.22+ (commit f40685c), we don't have to
work around lack of g_strcmp0() anymore.
This reverts commit 8f47747899.
Conflicts:
qemu-ga.c
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
The current guest-fstrim support only returns an error if some
mountpoint was unable to be trimmed, skipping any possible additional
mountpoints. The result of the TRIM operation itself is also discarded.
This change returns a per mountpoint result of the TRIM operation. If an
error occurs on some mountpoints that error is returned and the
guest-fstrim continue with any additional mountpoints.
The returned values for errors, minimum and trimmed are dependant on the
filesystem, storage stacks and kernel version.
Signed-off-by: Justin Ossevoort <justin@quarantainenet.nl>
* s/type/struct/ in schema type definitions
* moved version annotation for new guest-fstrim return field to
the field itself rather than applying to the entire command
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
The FITRIM ioctl updates the fstrim_range structure it receives. This
way the caller can determine how many bytes were trimmed. The
guest-fstrim logic reuses the same fstrim_range for each filesystem,
effectively limiting each filesystem to trim at most as much as the
previous was able to trim.
If a previous filesystem would have trimmed 0 bytes, than the next
filesystem would report an error 'Invalid argument' because a FITRIM
request with length 0 is not valid.
This change resets the fstrim_range structure for each filesystem.
Signed-off-by: Justin Ossevoort <justin@quarantainenet.nl>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Patch queue for s390 - 2015-07-07
A few last minute fixes for 2.4. All of them are s390 TCG bug fixes.
# gpg: Signature made Tue Jul 7 16:52:22 2015 BST using RSA key ID 03FEDC60
# gpg: Good signature from "Alexander Graf <agraf@suse.de>"
# gpg: aka "Alexander Graf <alex@csgraf.de>"
* remotes/agraf/tags/signed-s390-for-upstream:
tcg/s390: fix branch target change during code retranslation
target-s390x: fix CONVERT TO BINARY (CVD, CVDY)
target-s390x: fix EXECUTE instruction executing TRT
target-s390x: fix MOVE LONG instruction
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Patch queue for ppc - 2015-07-07
A few last minute PPC changes for 2.4:
- spapr: Update SLOF
- spapr: Fix a few bugs
- spapr: Preparation for hotplug
- spapr: Minor code cleanups
- linux-user: Add mftb handling
- kvm: Enable hugepage support with memory-backend-file
- mac99: Remove nonexistent interrupt pin (Mac OS 9 fix)
# gpg: Signature made Tue Jul 7 16:48:41 2015 BST using RSA key ID 03FEDC60
# gpg: Good signature from "Alexander Graf <agraf@suse.de>"
# gpg: aka "Alexander Graf <alex@csgraf.de>"
* remotes/agraf/tags/signed-ppc-for-upstream: (30 commits)
sPAPR: Clear stale MSIx table during EEH reset
sPAPR: Reenable EEH functionality on reboot
sPAPR: Don't enable EEH on emulated PCI devices
spapr-vty: Use TYPE_ definition instead of hardcoding
spapr_vty: lookup should only return valid VTY objects
spapr_pci: drop redundant args in spapr_[populate, create]_pci_child_dt
spapr_pci: populate ibm,loc-code
spapr_pci: enumerate and add PCI device tree
xics_kvm: Don't enable KVM_CAP_IRQ_XICS if already enabled
ppc: Update cpu_model in MachineState
spapr: Consolidate cpu init code into a routine
spapr: Reorganize CPU dt generation code
cpus: Add a macro to walk CPUs in reverse
spapr: Support ibm, lrdr-capacity device tree property
spapr: Consider max_cpus during xics initialization
Revert "hw/ppc/spapr_pci.c: Avoid functions not in glib 2.12 (g_hash_table_iter_*)"
spapr_iommu: translate sPAPRTCEAccess to IOMMUAccessFlags
spapr_iommu: drop erroneous check in h_put_tce_indirect()
spapr_pci: set device node unit address as hex
spapr_pci: encode class code including Prog IF register
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
X86 queue, 2015-07-07
Patch "target-i386: emulate CPUID level of real hardware" was removed after the
2015-07-03 pull request.
# gpg: Signature made Tue Jul 7 15:46:23 2015 BST using RSA key ID 984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/x86-pull-request:
target-i386: avoid overflow in the tsc-frequency property
i386: Introduce ARAT CPU feature
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
migration/next for 20150707
# gpg: Signature made Tue Jul 7 13:56:30 2015 BST using RSA key ID 5872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg: aka "Juan Quintela <quintela@trasno.org>"
* remotes/juanquintela/tags/migration/20150707: (28 commits)
migration: extend migration_bitmap
migration: protect migration_bitmap
check_section_footers: Check the correct section_id
migration: Add migration events on target side
migration: Make events a capability
migration: create migration event
migration: No need to call trace_migrate_set_state()
migration: Use always helper to set state
migration: ensure we start in NONE state
migration: Use cmpxchg correctly
migration: Add configuration section
vmstate: Create optional sections
global_state: Make section optional
migration: create new section to store global state
runstate: migration allows more transitions now
runstate: Add runstate store
Fix older machine type compatibility on power with section footers
Fail more cleanly in mismatched RAM cases
Sanity check RDMA remote data
Sort destination RAMBlocks to be the same as the source
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Make sure to not modify the branch target. This ensure that the
branch target is not corrupted during partial retranslation.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Tested-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
current_number being shift left by more than 32 bits, we can't use a
simple int. Similarly use an int64_t type for the input binary value,
to not get the -2^31 case wrong. Finally don't initialize shift to 4,
it's already done in the for loop.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
A break is missing in the EXECUTE instruction, when executing the
TRANSLATE AND TEST instruction.
Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-By: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
The MOVE LONG instruction should pad the destination operand with the
byte from bit positions 32-39 of the source length (r2 + 1), not with
the same byte in the source address.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
The PCI device MSIx table is cleaned out in hardware after EEH PE
reset. However, we still hold the stale MSIx entries in QEMU, which
should be cleared accordingly. Otherwise, we will run into another
(recursive) EEH error and the PCI devices contained in the PE have
to be offlined exceptionally.
The patch introduces function spapr_phb_vfio_eeh_pre_reset(), which
is called by sPAPR when asserting hot or fundamental reset, to clear
stale MSIx table for VFIO PCI devices before EEH PE reset so that
MSIx table could be restored properly after EEH PE reset.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
When rebooting the guest, some PEs might be in frozen state. The
contained PCI devices won't work properly if their frozen states
aren't cleared in time. One case running into this situation would
be maximal EEH error times encountered in the guest.
The patch reenables the EEH functinality on PEs on PHB's reset
callback, which will clear their frozen states if needed.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
There might have emulated PCI devices, together with VFIO PCI
devices under one PHB. The EEH capability shouldn't enabled
on emulated PCI devices.
The patch returns error when enabling EEH capability on emulated
PCI devices by RTAS call "ibm,set-eeh-option".
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
There's a call to object_dynamic_cast() in spapr_vty which uses the type
name "spapr-vty" directly, instead of the usual idiom of using the #defined
TYPE_VIO_SPAPR_VTY_DEVICE. Fix it.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
If a guest passes the reg property of a valid VIO object that is not a VTY
to either H_GET_TERM_CHAR or H_PUT_TERM_CHAR, QEMU hits a dynamic cast
assertion and aborts.
PAPR+ says "Hypervisor checks the termno parameter for validity against the
Vterm IOA unit addresses assigned to the partition, else return H_Parameter."
This patch adds a type check to ensure vty_lookup() either returns a pointer
to a valid VTY object or NULL. H_GET_TERM_CHAR and H_PUT_TERM_CHAR will
now return H_PARAMETER to the guest instead of crashing.
The patch has no effect on the reg == 0 hack used to implement the RTAS call
display-character.
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
* phb_index is not being used and if required can be obtained from sphb
* use helper to get drc_index in spapr_populate_pci_child_dt()
* Check if drc_index is zero
Suggested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Each hardware instance has a platform unique location code. The OF
device tree that describes a part of a hardware entity must include
the “ibm,loc-code” property with a value that represents the location
code for that hardware entity.
Populate ibm,loc-code.
1) PCI passthru devices need to identify with its own ibm,loc-code
available on the host. In failure cases use:
vfio_<name>:<phb-index>:<bus>:<slot>.<fn>
2) Emulated devices encode as following:
qemu_<name>:<phb-index>:<bus>:<slot>.<fn>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
All the PCI enumeration and device node creation was off-loaded to
SLOF. With PCI hotplug support, code needed to be added to add device
node. This creates multiple copy of the code one in SLOF and other in
hotplug code. To unify this, the patch adds the pci device node
creation in Qemu. For backward compatibility, a flag
"qemu,phb-enumerated" is added to the phb, suggesting to SLOF to not
do device node creation.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
[ Squashed Michael's drc_index changes ]
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
When supporting CPU hot removal by parking the vCPU fd and reusing
it during hotplug again, there can be cases where we try to reenable
KVM_CAP_IRQ_XICS CAP for the vCPU for which it was already enabled.
Introduce a boolean member in ICPState to track this and don't
reenable the CAP if it was already enabled earlier.
Re-enabling this CAP should ideally work, but currently it results in
kernel trying to create and associate ICP with this vCPU and that
fails since there is already an ICP associated with it. Hence this
patch is needed to work around this problem in the kernel.
This change allows CPU hot removal to work for sPAPR.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Factor out bits of sPAPR specific CPU initialization code into
a separate routine so that it can be called from CPU hotplug
path too.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Reorganize CPU device tree generation code so that it be reused from
hotplug path. CPU dt entries are now generated from spapr_finalize_fdt()
instead of spapr_create_fdt_skel().
Note: This is how the split-up looks like now:
Boot path
---------
spapr_finalize_fdt
spapr_populate_cpus_dt_node
spapr_populate_cpu_dt
spapr_fixup_cpu_numa_dt
spapr_fixup_cpu_smt_dt
ibm,cas path
------------
spapr_h_cas_compose_response
spapr_fixup_cpu_dt
spapr_fixup_cpu_numa_dt
spapr_fixup_cpu_smt_dt
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Add support for ibm,lrdr-capacity since this is needed by the guest
kernel to know about the possible hot-pluggable CPUs and Memory. With
this, pseries kernels will start reporting correct maxcpus in
/sys/devices/system/cpu/possible.
Also define the minimum hotpluggable memory size as 256MB.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[agraf: Fix compile error on 32bit hosts]
Signed-off-by: Alexander Graf <agraf@suse.de>
Use max_cpus instead of smp_cpus when intializating xics system. Also
report max_cpus in ibm,interrupt-server-ranges device tree property of
interrupt controller node.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Since we now require GLib 2.22+ (commit f40685c), we don't have to
work around lack of g_hash_table_iter_init() & friends anymore.
This reverts commit f8833a37c0.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
The fact that these enums have matching values is pure coincidence. We
actually need to translate from the PAPR definition to the QEMU one.
This patch doesn't fix any bug, it is only code cleanup.
Suggested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
The tce_list variable is not a TCE but the address to a TCE: we shouldn't
clear permission bits as we do now. And this is dead code anyway since we
check tce_list is 4K aligned a few lines above.
This patch doesn't fix any bug, it is only code cleanup.
Suggested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Device node names should encode the unit address as hex, while the
code was encodind it as integers.
Also, use FDT_NAME_MAX macro for allocating and composing the name.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Current code missed the Prog IF register. All Class Code, Subclass,
and Prog IF registers are needed to identify the accurate device type.
For example: USB controllers use the PROG IF for denoting: USB
FullSpeed, HighSpeed or SuperSpeed.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
The properties reg/assigned-resources need to encode 64-bit memory
address space as part of phys.hi dword.
00 if configuration space
01 if IO region,
10 if 32-bit MEM region
11 if 64-bit MEM region
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Currently although we have an sPAPRMachineState descended from MachineState
we don't have an sPAPRMAchineClass descended from MachineClass. So far it
hasn't been needed, but several upcoming features are going to want it,
so this patch creates a stub implementation.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
The sPAPRMachineState structure includes an entry_point field containing
the initial PC value for starting the machine, even though this always has
the value 0x100.
I think this is a hangover from very early versions which bypassed the
firmware when using -kernel. In any case it has no function now, so remove
it.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
The ram_limit field was imported from sPAPREnvironment where it predates
the machine's ram size being available generically from machine->ram_size.
Worse, the existing code was inconsistent about where it got the ram size
from. Sometimes it used spapr->ram_limit, sometimes the global 'ram_size'
and sometimes a local 'ram_size' masking the global.
This cleans up the code to consistently use machine->ram_size, eliminating
spapr->ram_limit in the process.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
The code for -machine pseries maintains a global sPAPREnvironment structure
which keeps track of general state information about the guest platform.
This predates the existence of the MachineState structure, but performs
basically the same function.
Now that we have the generic MachineState, fold sPAPREnvironment into
sPAPRMachineState, the pseries specific subclass of MachineState.
This is mostly a matter of search and replace, although a few places which
relied on the global spapr variable are changed to find the structure via
qdev_get_machine().
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
The changelog is:
> version: update to 20150429
> pci: Use QEMU created PCI device nodes
> usb: support 64-bit pci bars
> pci: Support 64-bit address translation
> pci: program correct bridge limit registers during probe
> scsi: handle report-luns failure
> Fix "key?" Forth word when using USB keyboards
> Remove bulk.fs package
> Include make.rules in the library Makefiles
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
XICS needs to know the upper value for cpu_index as it is used to compute
the number of servers:
smp_cpus * kvmppc_smt_threads() / smp_threads
When passing -smp cpus=1,threads=9 on a POWER8 host, we end up with:
1 * 8 / 9 = 0
... which leads to an assertion in both emulated:
Number of servers needs to be greater 0
Aborted (core dumped)
... and in-kernel XICS:
xics_kvm_realize: Assertion `icp->nr_servers' failed.
Aborted (core dumped)
With this patch, we are sure that nr_servers > 0. Passing the same bogus
-smp option then leads to:
qemu-system-ppc64: Cannot support more than 8 threads on PPC with KVM
... which is a lot more explicit than the XICS errors.
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Current PPC code relies on -mem-path being used in order for
hugepage support to be detected. With the introduction of
MemoryBackendFile we can now handle this via:
-object memory-file-backend,mem-path=...,id=hugemem0 \
-numa node,id=mem0,memdev=hugemem0
Management tools like libvirt treat the 2 approaches as
interchangeable in some cases, which can lead to user-visible
regressions even for previously supported guest configurations.
Fix these by also iterating through any configured memory
backends that may be backed by hugepages.
Since the old code assumed hugepages always backed the entirety
of guest memory, play it safe an pick the minimum across the
max pages sizes for all backends, even ones that aren't backed
by hugepages.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
The current macio implementation declares an interrupt that doesn't appear to
exist in the hardware or any other emulator implementation. OpenBIOS detects
this interrupt and generates an 'interrupts' property in the macio device tree
entry. Mac OS 9 halts boot when it detects this interrupt, so it has been
removed to permit further progress in the boot process.
Signed-off-by: Cormac O'Brien <i.am.cormac.obrien@gmail.com>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Alexander Graf <agraf@suse.de>
In qemu-linux-user, when calling gethostbyname2(),
it was hanging in .__res_nmkquery.
(gdb) bt
0 in .__res_nmkquery () from /lib64/libresolv.so.2
1 in .__libc_res_nquery () from /lib64/libresolv.so.2
2 in .__libc_res_nsearch () from /lib64/libresolv.so.2
3 in ._nss_dns_gethostbyname3_r () from /lib64/libnss_dns.so.2
4 in ._nss_dns_gethostbyname2_r () from /lib64/libnss_dns.so.2
5 in .gethostbyname2_r () from /lib64/libc.so.6
6 in .gethostbyname2 () from /lib64/libc.so.6
.__res_nmkquery() is:
...
do { RANDOM_BITS (randombits); } while ((randombits & 0xffff) == 0);
...
<.__res_nmkquery+112>: mftbl r11
<.__res_nmkquery+116>: clrlwi r10,r11,16
<.__res_nmkquery+120>: cmpwi cr7,r10,0
<.__res_nmkquery+124>: beq cr7,<.__res_nmkquery+112>
but as mftbl (Move From Time Base Lower) is not implemented,
r11 is always 0, so we have an infinite loop.
This patch fills the Time Base register with cpu_get_real_ticks().
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Alexander Graf <agraf@suse.de>
# gpg: Signature made Tue Jul 7 13:38:13 2015 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/net-pull-request:
rocker: tests: don't need to specify master/self when setting vlans
rocker: mark copy-to-cpu pkts as forwarding offloaded
rocker: return -1 when dropping packet on ingress
rocker: fix missing break statements
rocker: fix misplaced break statement
rocker: don't queue receive pkts when port is disabled
vmxnet3: Fix incorrect small packet padding
e1000: flush packets when link comes up
rocker: fix memory leak
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The TSC frequency fits comfortably in an int when expressed in kHz,
but it may overflow when converted to Hz. In this case,
tsc-frequency returns a negative value because x86_cpuid_get_tsc_freq
does a 32-bit multiplication before assigning to int64_t.
For simplicity just make tsc_khz a 64-bit value.
Spotted by Coverity.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
ARAT signals that the APIC timer does not stop in power saving states.
As our APICs are emulated, it's fine to expose this feature to guests,
at least when asking for KVM host features or with CPU types that
include the flag. The exact model number that introduced the feature is
not known, but reports can be found that it's at least available since
Sandy Bridge.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
In libguestfs we use /dev/fd/<NN> to pass pre-opened file descriptors
to qemu-img. Lately I've discovered that although this works, qemu
believes that these are floppy disk images. That in itself isn't much
of a problem, but now qemu prints a warning about host floppy
pass-thru being deprecated.
Extend the existing test so that it ignores /dev/fd/ as well as
/dev/fdset/
A simple test of this, if you are using the bash shell, is:
qemu-img info <( cat /dev/null )
without this patch:
$ qemu-img info <( cat /dev/null )
qemu-img: Host floppy pass-through is deprecated
Support for it will be removed in a future release.
qemu-img: Could not open '/dev/fd/63': Could not refresh total sector count: Illegal seek
with this patch:
$ qemu-img info <( cat /dev/null )
qemu-img: Could not open '/dev/fd/63': Could not refresh total sector count: Illegal seek
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1435761614-31358-1-git-send-email-rjones@redhat.com
Fixes: https://bugs.launchpad.net/qemu/+bug/1470536
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
There callers work on a single BlockDriverState subtree, where using
bdrv_drain() is more accurate.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Prevously, if we hotplug a device(e.g. device_add e1000) during
migration is processing in source side, qemu will add a new ram
block but migration_bitmap is not extended.
In this case, migration_bitmap will overflow and lead qemu abort
unexpectedly.
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
The section footers check was incorrectly checking the section_id
in the SaveStateEntry not the LoadStateEntry. These can validly be different
if the two QEMU instances have instantiated their devices in a
different order. The test only cares that we're finishing the same
section we started, and hence it's the LoadStateEntry that we care about.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
We reuse the migration events from the source side, sending them on the
appropiate place.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Make check fails with events. THis is due to the parser/lexer that it
uses. Just in case that they are more broken parsers, just only send
events when there are capabilities.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
We have one argument that tells us what event has happened.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
We now use the helper everywhere, so no need to call this on this two
places. See on previous commit that there were a place where we missed
to mark the trace. Now all tracing is done in migrate_set_state().
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
There were three places that were not using the migrate_set_state()
helper, just fix that.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
It needs to be the first one and it is not optional, that is the reason
why it is opencoded. For new machine types, it is required that machine
type name is the same in both sides.
It is just done right now for pc's.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
To make sections optional, we need to do it at the beggining of the code.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This section would be sent:
a- for all new machine types
b- for old machine types if section state is different form {running,paused}
that were the only giving us troubles.
So, in new qemus: it is alwasy there. In old qemus: they are only
there if it an error has happened, basically stoping on target.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This includes a new section that for now just stores the current qemu state.
Right now, there are only one way to control what is the state of the
target after migration.
- If you run the target qemu with -S, it would start stopped.
- If you run the target qemu without -S, it would run just after migration finishes.
The problem here is what happens if we start the target without -S and
there happens one error during migration that puts current state as
-EIO. Migration would ends (notice that the error happend doing block
IO, network IO, i.e. nothing related with migration), and when
migration finish, we would just "continue" running on destination,
probably hanging the guest/corruption data, whatever.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Next commit would allow to move from incoming migration to error happening on source.
Should we add more states to this transition? Luiz?
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This allows us to store the current state to send it through migration.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
I forgot to add compatibility for Power when adding section footers.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixes: 37fb569c01
Signed-off-by: Juan Quintela <quintela@redhat.com>
If the number of RAMBlocks was different on the source from the
destination, QEMU would hang waiting for a disconnect on the source
and wouldn't release from that hang until the destination was manually
killed.
Mark the stream as being in error, this causes the destination to die
and the source to carry on.
(It still gets a whole bunch of warnings on the destination, and I've
not managed to complete another migration after the 1st one, still
progress).
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Perform some basic (but probably not complete) sanity checking on
requests from the RDMA source.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael R. Hines <mrhines@us.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Use the order of incoming RAMBlocks from the source to record
an index number; that then allows us to sort the destination
local RAMBlock list to match the source.
Now that the RAMBlocks are known to be in the same order, this
simplifies the RDMA Registration step which previously tried to
match RAMBlocks based on offset (which isn't guaranteed to match).
Looking at the existing compress code, I think it was erroneously
relying on an assumption of matching ordering, which this fixes.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
RDMA uses a hash from block offset->RAM Block; this isn't needed
on the destination, and it becomes harder to maintain after the next
patch in the series that sorts the block list.
Split the hash so that it's only generated on the source.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
In the next patch we remove the hash on the destination,
rdma_delete_block does two things with the hash which can be avoided:
a) The caller passes the offset and rdma_delete_block looks it up
in the hash; fixed by getting the caller to pass the block
b) The hash gets recreated after deletion; fixed by making that
conditional on the hash being initialised.
While this function is currently only used during cleanup, Michael
asked that we keep it general for future dynamic block registration
work.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
We need the names of RAMBlocks as they're loaded for RDMA,
reuse a slightly modified ram_control_load_hook:
a) Pass a 'data' parameter to use for the name in the block-reg
case
b) Only some hook types now require the presence of a hook function.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
The 'offset' field in RDMACompress and 'current_addr' field
in RDMARegister are commented as being offsets within a particular
RAMBlock, however they appear to actually be offsets within the
ram_addr_t space.
The code currently assumes that the offsets on the source/destination
match, this change removes the need for the assumption for these
structures by translating the addresses into the ram_addr_t space of
the destination host.
Note: An alternative would be to change the fields to actually
take the data they're commented for; this would potentially be
simpler but would break stream compatibility for those cases
that currently work.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
In a later patch the block name will be used to match up two views
of the block list. Keep a copy of the block name with the local block
list.
(At some point it could be argued that it would be best just to let
migration see the innards of RAMBlock and avoid the need to use
foreach).
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael R. Hines <mrhines@us.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
The VMDescription section maybe after the EOF mark, the current code
does a 'qemu_get_byte' and either gets the header byte identifying the
description or an error (which it ignores). Doing the 'get' upsets
RDMA which hangs on old machine types without the VMDescription.
Just avoid reading the VMDescription if we wouldn't send it.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
For pkts copied to the CPU (to be processed by guest driver), mark the Rx
descriptor with flag "OFFLOAD_FWD" to indicate device has already forwarded
pkt. The guest driver will use this indicator to avoid duplicate
forwarding in the guest OS.
Examples include bcast/mcast/unknown ucast pkts flooded to bridged ports.
We want to avoid both the device and the guest bridge driver flooding these
pkts, which would result in duplicates pkts on the wire. Packet sampling,
such as sFlow, can also use this technique to mark pkts for the guest OS to
record but otherwise drop.
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Message-id: 1435746792-41278-5-git-send-email-sfeldma@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Premature break in switch case block. This particular case (group L2 rewrite)
will be used for L2 LAG and L3 ECMP support, neither of which are enabled in
the guest driver at this time, but are under development.
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1435746792-41278-2-git-send-email-sfeldma@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Commit 6e99c63 ("net/socket: Drop net_socket_can_send") changed the
semantics around .can_receive for sockets to now require the device to
flush queued pkts when transitioning to a .can_receive=true state. Rocker
device was not flushing the queue on .can_receive=true transition, so the
receiver was stuck.
But, turns out we really don't want any queuing at all on the port when the
port is disabled, otherwise when the port transitions to enabled, we'd
receive and forward stale pkts that really should have been dropped. So,
let's remove .can_receive so avoid queuing and drop the pkt in .receive if
the port is disabled.
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1435717553-36187-1-git-send-email-sfeldma@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
When running ESXi under qemu there is an issue with the ESXi guest
discarding packets that are too short. The guest discards any packets
under the normal minimum length for an ethernet packet (60). This
results in odd behaviour where other hosts or VMs on other hosts can
communicate with the ESXi guest just fine (since there's a physical NIC
somewhere doing padding), but VMs on the host and the host itself cannot
because the ARP request packets are too small for the ESXi host to
accept.
Someone in the past thought this was worth fixing, and added code to the
vmxnet3 qemu emulation such that if it is receiving packets smaller than
60 bytes to pad the packet out to 60. Unfortunately this code is wrong
(or at least in the wrong place). It does so BEFORE before taking into
account the vnet_hdr at the front of the packet added by the tap device.
As a result, it might add padding, but it never adds enough.
Specifically it adds 10 less (the length of the vnet_hdr) than it needs
to.
The following (hopefully "obviously correct") patch simply swaps the
order of processing the vnet header and the padding. With this patch an
ESXi guest is able to communicate with the host or other local VMs.
Signed-off-by: Brian Kress <kressb@moose.net>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
e1000_can_receive() checks the link up status register bit. If the bit
is clear, packets will be queued and the peer may disable receive to
avoid wasting CPU reading packets that cannot be delivered. The queue
must be flushed once the link comes back up again.
This patch fixes broken e1000 receive with Mac OS X Snow Leopard guests
and tap networking. Flushing the queue invokes the async send callback,
which re-enables tap fd read.
Reported-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1435223885-12745-1-git-send-email-stefanha@redhat.com
This interface provides some registers within a 32-byte range and can be
acessed through PCI-to-LPC bridge interface (PMBASE + 0x60).
It's commonly used as a watchdog timer to detect system lockups through
SMIs that are generated -- if TCO_EN bit is set -- on every timeout. If
NO_REBOOT bit is not set in GCS (General Control and Status register),
the system will be resetted upon second timeout if TCO_RLD register
wasn't previously written to prevent timeout.
This patch adds support to TCO watchdog logic and few other features
like mapping NMIs to SMIs (NMI2SMI_EN bit), system intruder detection,
etc. are not implemented yet.
Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
MIPS doesn't need it, and including it creates problem as we are adding
dependency on ISA LPC bridge.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
To prepare for a generic internal cipher API, move the
built-in D3DES implementation into the crypto/ directory.
This is not in fact a normal D3DES implementation, it is
D3DES with double & triple length modes removed, and the
key bytes in reversed bit order. IOW it is crippled
specifically for the "benefit" of RFB, so call the new
files desrfb.c instead of d3des.c to make it clear that
it isn't a generally useful impl.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1435770638-25715-4-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Introduce a new crypto/ directory that will (eventually) contain
all the cryptographic related code. This initially defines a
wrapper for initializing gnutls and for computing hashes with
gnutls. The former ensures that gnutls is guaranteed to be
initialized exactly once in QEMU regardless of CLI args. The
block quorum code currently fails to initialize gnutls so it
only works by luck, if VNC server TLS is not requested. The
hash APIs avoids the need to litter the rest of the code with
preprocessor checks and simplifies callers by allocating the
correct amount of memory for the requested hash.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1435770638-25715-2-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The doc comments for bdrv_drain_all() and bdrv_drain() are outdated:
* The bdrv_drain() comment is a poor man's bdrv_lock()/bdrv_unlock()
which Fam Zheng is currently developing. Unfortunately this warning
was never really enough because devices keep submitting I/O and op
blockers don't prevent that.
* The bdrv_drain_all() comment is still partially correct but reflects
the nature of the implementation rather than API documentation.
Do make it clear that bdrv_drain() is only appropriate within an
AioContext. For anything spanning AioContexts you need
bdrv_drain_all().
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1435854281-6078-1-git-send-email-stefanha@redhat.com
Switch over to virtio_instance_init_common. Drop duplicate properties
in virtio-gpu-pci and virtio-vga as they are properly aliased now. Also
drop the indirection via DEFINE_VIRTIO_GPU_PROPERTIES, we don't need it
any more as the properties are defined in a single place now.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Update the device link of the QemuConsole, so it points to the
virtio-gpu-pci or virtio-vga device instead of virtio-gpu-device.
This is needed because we want to find the device by id, for
example for input routing, and the id specified on the command
line is attached to the pci proxy, not the virtio device.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
On ARM, commit ac9d32e396 postponed the
memory preparation for boot until the machine init done notifier. This
has for consequence to insert ROM at machine init done time.
However the rom_load_all function stayed called before the ROM are
inserted. As a consequence the rom_load_all function does not do
everything it is expected to do, on ARM.
It currently registers the ROM reset notifier but does not iterate through
the registered ROM list. the isrom field is not set properly. This latter
is used to report info in the monitor and also to decide whether the
rom->data can be freed on ROM reset notifier.
To fix that regression the patch moves the rom_load_all call after
machine init done. We also take the opportunity to rename the rom_load_all
function into rom_check_and_resgister_reset() and integrate the
rom_load_done in it.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reported-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-Id: <1434470874-22573-1-git-send-email-eric.auger@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Accesses to vring_avail_event and vring_used_event must honor the queue
endianness.
This patch allows cross-endian setups to use dataplane (tested with ppc64
on ppc64le, and vice-versa).
Suggested-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This series implements KVM support for SMM, and lets you enable/disable
it through the "smm" property of x86 machine types.
# gpg: Signature made Mon Jul 6 17:41:05 2015 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream-smm:
pc: add SMM property
ich9: add smm_enabled field and arguments
pc_piix: rename kvm_enabled to smm_enabled
target-i386: register a separate KVM address space including SMRAM regions
kvm-all: kvm_irqchip_create is not expected to fail
kvm-all: add support for multiple address spaces
kvm-all: make KVM's memory listener more generic
kvm-all: move internal types to kvm_int.h
kvm-all: remove useless typedef
kvm-all: put kvm_mem_flags to more work
target-i386: add support for SMBASE MSR and SMIs
piix4/ich9: do not raise SMI on ACPI enable/disable commands
linux-headers: Update to 4.2-rc1
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix pba_offset initialization value for Chelsio T5 Virtual Function
device. The T5 hardware has a bug in it where it reports a Pending Interrupt
Bit Array Offset of 0x8000 for its SR-IOV Virtual Functions instead
of the 0x1000 that the hardware actually uses internally. As the hardware
doesn't return the correct pba_offset value, add a quirk to instead
return a hardcoded value of 0x1000 when a Chelsio T5 VF device is
detected.
This bug has been fixed in the Chelsio's next chip series T6 but there are
no plans to respin the T5 ASIC for this bug. It is just documented in the
T5 Errata and left it at that.
Signed-off-by: Gabriel Laupre <glaupre@chelsio.com>
Reviewed-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
On systems with guest visible IOMMU, adding a new memory region onto
PCI bus calls vfio_listener_region_add() for every DMA window. This
installs a notifier for IOMMU memory regions. The notifier is supposed
to be removed vfio_listener_region_del(), however in the case of mixed
PHB (emulated + VFIO devices) when last VFIO device is unplugged and
container gets destroyed, all existing DMA windows stay alive altogether
with the notifiers which are on the linked list which head was in
the destroyed container.
This unregisters IOMMU memory region notifier when a container is
destroyed.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This patch aims at optimizing IRQ handling using irqfd framework.
Instead of handling the eventfds on user-side they are handled on
kernel side using
- the KVM irqfd framework,
- the VFIO driver virqfd framework.
the virtual IRQ completion is trapped at interrupt controller
This removes the need for fast/slow path swap.
Overall this brings significant performance improvements.
Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com>
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Vikram Sethi <vikrams@codeaurora.org>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Commit f41389ae3c introduced kvm_resamplefds_enabled() and
associated kvm_resamplefds_allowed boolean. This patch adds
non-KVM version for kvm_resamplefds_enabled and also declares
kvm_resamplefds_allowed in kvm-stub as it is done for fellow
kvm_irqfds_allowed.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Add a new connect_irq_notifier notifier in the SysBusDeviceClass. This
notifier, if populated, is called after sysbus_connect_irq.
This mechanism is used to setup VFIO signaling once VFIO platform
devices get attached to their platform bus, on a machine init done
notifier.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Tested-by: Vikram Sethi <vikrams@codeaurora.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
The arm_gic_kvm now calls kvm_irqchip_set_qemuirq_gsi to build
the hash table storing qemu_irq/gsi mappings. From that point on
irqfd can be setup directly from the qemu_irq using
kvm_irqchip_add_irqfd_notifier.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Tested-by: Vikram Sethi <vikrams@codeaurora.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
VFIO platform device needs to setup irqfd but it does not know the
gsi corresponding to the device qemu_irq. This patch proposes to
store a hash table in kvm_state using the qemu_irq as key and the gsi
as a value.
kvm_irqchip_set_qemuirq_gsi allows to insert such a pair. The interrupt
controller is supposed to use it.
kvm_irqchip_[add, remove]_irqfd_notifier allows to setup/tear down
irqfd directly from the qemu_irq.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Tested-by: Vikram Sethi <vikrams@codeaurora.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This is system level code, and should only depend on the host page
size, not the target page size.
Note that HOST_PAGE_SIZE is misleadingly lead and is really aligning
to both host and target page size. Hence it's replacement with
REAL_HOST_PAGE_SIZE.
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Currently the "host" page size alignment API is really aligning to both
host and target page sizes. There is the qemu_real_page_size which can
be used for the actual host page size but it's missing a mask and ALIGN
macro as provided for qemu_page_size. Complete the API. This allows
system level code that cares about the host page size to use a
consistent alignment interface without having to un-needingly align to
the target page size. This also reduces system level code dependency
on the cpu specific TARGET_PAGE_SIZE.
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
size_t is an unsigned type, thus the error case is never reached in
the below call to pread. If bytes is negative, it will be seen as
a very high positive value.
Spotted by Coverity.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
The property can take values on, off or auto. The default is "off"
for KVM and pre-2.4 machines, otherwise "auto" (which makes it
available on TCG or on new-enough kernels).
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Q35's ACPI device is hard-coding SMM availability to KVM. Place the
logic where the board is created instead, so that it will be possible
to override it.
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We will enable SMM even if KVM is in use. Rename the field and
arguments.
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM_CREATE_IRQCHIP should never fail, and so should its userspace
wrapper kvm_irqchip_create. The function does not do anything
if the irqchip capability is not available, as is the case for PPC.
With this patch, kvm_arch_init can allocate memory and it will not
be leaked.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Make kvm_memory_listener_register public, and assign a kernel
address space id to each KVMMemoryListener.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
No semantic change, but s->slots moves into a new struct
KVMMemoryListener. KVM's memory listener becomes a member of struct
KVMState, and becomes of type KVMMemoryListener.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
i386 code will have to define a different KVMMemoryListener. Create
an internal header so that KVMSlot is not exposed outside.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently kvm_mem_flags just translates bools to bits, let's
make it also determine the bools first. This avoids its parameter
list growing each time we add a flag.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Apart from the MSR, the smi field of struct kvm_vcpu_events has to be
translated into the corresponding CPUX86State fields. Also,
memory transaction flags depend on SMM state, so pull it from struct
kvm_run on every exit from KVM to userspace.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
These commands are handled entirely by QEMU. Do not raise an SMI
when they happen, because Windows (at least 2008r2) expects these
commands to work and (depending on the value of APMC_EN at
startup) the firmware might not have installed an SMI handler.
When this happens (e.g. the kernel supports SMIs, or you are using
TCG, but you have used "-machine smm=off") RIP is moved to 0x38000
where there is no code to execute.
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This updates linux-headers against master 4.2-rc1 (commit
d770e558e21961ad6cfdf0ff7df0eb5d7d4f0754). This is the result of
./scripts/update-linux-headers.sh work.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* more of Peter Crosthwaite's multiarch preparation patches
* unlocked MMIO support in KVM
* support for compilation with ICC
# gpg: Signature made Mon Jul 6 13:59:20 2015 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream:
exec: skip MMIO regions correctly in cpu_physical_memory_write_rom_internal
Stop including qemu-common.h in memory.h
kvm: Switch to unlocked MMIO
acpi: mark PMTIMER as unlocked
kvm: Switch to unlocked PIO
kvm: First step to push iothread lock out of inner run loop
memory: let address_space_rw/ld*/st* run outside the BQL
exec: pull qemu_flush_coalesced_mmio_buffer() into address_space_rw/ld*/st*
memory: Add global-locking property to memory regions
main-loop: introduce qemu_mutex_iothread_locked
main-loop: use qemu_mutex_lock_iothread consistently
Fix irq route entries exceeding KVM_MAX_IRQ_ROUTES
cpu-defs: Move out TB_JMP defines
include/exec: Move tb hash functions out
include/exec: Move standard exceptions to cpu-all.h
cpu-defs: Move CPU_TEMP_BUF_NLONGS to tcg
memory_mapping: Rework cpu related includes
cutils: allow compilation with icc
qemu-common: add VEC_OR macro
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Loading the BIOS in the mac99 machine is interesting, because there is a
PROM in the middle of the BIOS region (from 16K to 32K). Before memory
region accesses were clamped, when QEMU was asked to load a BIOS from
0xfff00000 to 0xffffffff it would put even those 16K from the BIOS file
into the region. This is weird because those 16K were not actually
visible between 0xfff04000 and 0xfff07fff. However, it worked.
After clamping was added, this also worked. In this case, the
cpu_physical_memory_write_rom_internal function split the write in
three parts: the first 16K were copied, the PROM area (second 16K) were
ignored, then the rest was copied.
Problems then started with commit 965eb2f (exec: do not clamp accesses
to MMIO regions, 2015-06-17). Clamping accesses is not done for MMIO
regions because they can overlap wildly, and MMIO registers can be
expected to perform full-width accesses based only on their address
(with no respect for adjacent registers that could decode to completely
different MemoryRegions). However, this lack of clamping also applied
to the PROM area! cpu_physical_memory_write_rom_internal thus failed
to copy the third range above, i.e. only copied the first 16K of the BIOS.
In effect, address_space_translate is expecting _something else_ to do
the clamping for MMIO regions if the incoming length is large. This
"something else" is memory_access_size in the case of address_space_rw,
so use the same logic in cpu_physical_memory_write_rom_internal.
Reported-by: Alexander Graf <agraf@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Tested-by: Laurent Vivier <lvivier@redhat.com>
Fixes: 965eb2f
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Including qemu-common.h from other header files is generally a bad
idea, because it means it's very easy to end up with a circular
dependency. For instance, if we wanted to include memory.h from
qom/cpu.h we'd end up with this loop:
memory.h -> qemu-common.h -> cpu.h -> cpu-qom.h -> qom/cpu.h -> memory.h
Remove the include from memory.h. This requires us to fix up a few
other files which were inadvertently getting declarations indirectly
through memory.h.
The biggest change is splitting the fprintf_function typedef out
into its own header so other headers can get at it without having
to include qemu-common.h.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1435933104-15216-1-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Due to different gdb overlay organization between windowed/call0
configurations core import script doesn't always work correctly.
Simplify the script: always copy complete gdb register map from overlay,
count registers at core registerstion time. Update existing cores.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Xtensa ISA got specification for 64-bit floating point registers and
opcodes, see ISA, 4.3.11 "Floating point coprocessor option".
Add 64-bit FP registers.
Although 64-bit floating point is currently not supported by xtensa
translator, these registers need to be reported to gdb with proper size,
otherwise it wouldn't find other registers.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
target-arm queue:
* TLBI ALLEI1IS should operate on all CPUs, not just this one
* Fix interval interrupt of cadence ttc in decrement mode
* Implement YIELD insn to yield in ARM and Thumb translators
* ARM GIC: reset all registers
* arm_mptimer: fix timer shutdown and mode change
* arm_mptimer: respect IT bit state
# gpg: Signature made Mon Jul 6 10:58:27 2015 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
* remotes/pmaydell/tags/pull-target-arm-20150706:
arm_mptimer: Respect IT bit state
arm_mptimer: Fix timer shutdown and mode change
hw/intc/arm_gic_common.c: Reset all registers
target-arm: Implement YIELD insn to yield in ARM and Thumb translators
target-arm: Split DISAS_YIELD from DISAS_WFE
Fix interval interrupt of cadence ttc when timer is in decrement mode
target-arm: fix write helper for TLBI ALLE1IS
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The timer should fire the interrupt only if the IT (interrupt enable) bit
state of the control register is enabled.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The running timer can't be stopped because timer control code just
doesn't handle disabling the timer. Fix it by deleting the timer if
the enable bit is cleared.
The timer won't start periodic ticking if a ONE-SHOT -> PERIODIC mode
change happens after a one-shot tick was completed. Fix it by
re-starting ticking if the timer isn't ticking right now.
To avoid code churning, these two fixes are squashed in one commit.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The arm_gic_common reset function was missing reset code for
several of the GIC's state fields:
* bpr[]
* abpr[]
* priority1[]
* priority2[]
* sgi_pending[]
* irq_target[] (SMP configurations only)
These probably went unnoticed because most guests will either
never touch them, or will write to them in the process of
configuring the GIC before enabling interrupts.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1435602345-32210-1-git-send-email-peter.maydell@linaro.org
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Currently we use DISAS_WFE for both WFE and YIELD instructions.
This is functionally correct because at the moment both of them
are implemented as "yield this CPU back to the top level loop so
another CPU has a chance to run". However it's rather confusing
that YIELD ends up calling HELPER(wfe), and if we ever want to
implement real behaviour for WFE and SEV it's likely to trip us up.
Split out the yield codepath to use DISAS_YIELD and a new
HELPER(yield) function, and have HELPER(wfe) call HELPER(yield).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1435672316-3311-2-git-send-email-peter.maydell@linaro.org
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The interval interrupt is not set if the timer is in decrement mode.
This is because x >=0 and x < interval after leaving the while-loop.
Signed-off-by: Johannes Schlatow <schlatow@ida.ing.tu-bs.de>
Message-id: 20150630135821.51f3b4fd@johanness-latitude
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Sat Jul 4 07:06:08 2015 BST using RSA key ID AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: FAEB 9711 A12C F475 812F 18F2 88A9 064D 1835 61EB
# Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76 CBD0 7DEF 8106 AAFC 390E
* remotes/jnsnow/tags/ide-pull-request: (35 commits)
ahci: fix sdb fis semantics
qtest/ahci: halted ncq migration test
ahci: Do not map cmd_fis to generate response
ahci: ncq migration
ahci: add get_cmd_header helper
ahci: add cmd header to ncq transfer state
qtest/ahci: halted NCQ test
ahci: correct ncq sector count
ahci: correct types in NCQTransferState
ahci: add rwerror=stop support for ncq
ahci: factor ncq_finish out of ncq_cb
ahci: refactor process_ncq_command
ahci: assert is_ncq for process_ncq
ahci: stash ncq command
ide: add limit to .prepare_buf()
qtest/ahci: ncq migration test
qtest/ahci: simple ncq data test
libqos/ahci: Force all NCQ commands to be LBA48
libqos/ahci: set the NCQ tag on command_commit
libqos/ahci: adjust expected NCQ interrupts
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
NUMA queue, 2015-07-03
# gpg: Signature made Fri Jul 3 21:49:58 2015 BST using RSA key ID 984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/numa-pull-request:
numa: API to lookup NUMA node by address
numa: Store boot memory address range in node_info
numa,pc-dimm: Store pc-dimm memory information in numa_info
pc: Abort if HotplugHandlerClass::plug() fails
pc,pc-dimm: Factor out reusable parts in pc_dimm_plug to a separate routine
pc,pc-dimm: Extract hotplug related fields in PCMachineState to a structure
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
There are two things to fix here:
The first one is subtle: the PxSACT register in the AHCI HBA has different
semantics from the field it is shadowing, the ACT field in the
Set Device Bits FIS.
In the HBA register, PxSACT acts as a bitfield indicating outstanding
NCQ commands where a set bit indicates a pending NCQ operation. The FIS
field however operates as an RWC register update to PxSACT, where a set
bit indicates a *successfully* completed command.
Correct the FIS semantics. At the same time, move the "clear finished"
action to the SDB FIS generation instead of the register read to mimick
how the other shadow registers work, which always just report the last
reported value from a FIS, and not the most current values which may
not have been reported by a FIS yet.
Lastly and more simply, SATA 3.2 section 13.6.4.2 (and later sections)
all specify that the Interrupt bit for the SDB FIS should always be set
to one for NCQ commands. That's currently the only time we generate this
FIS, so set it on all the time.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435767578-32743-16-git-send-email-jsnow@redhat.com
The Register D2H FIS should copy the current values of
the registers instead of just parroting back the same
values the guest sent back to it.
In this case, the SECTOR COUNT variables are actually
not generally meaningful in terms of standard commands
(See ATA8-AC3 Section 9.2 Normal Outputs), so it actually
probably doesn't matter what we put in here.
Meanwhile, we do need to use the Register update FIS from
the NCQ pathways (in error cases), so getting rid of
references to cur_cmd here is a win for AHCI concurrency.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435767578-32743-14-git-send-email-jsnow@redhat.com
cur_cmd is an internal bookmark that points to the
current AHCI Command Header being processed by the
AHCI state machine. With NCQ needing to occasionally
rely on some of the same AHCI helpers, we cannot use
cur_cmd and will need to grab explicit pointers instead.
In an attempt to begin relying on the cur_cmd pointer
less, add a helper to let us specifically get the pointer
to the command header of particular interest.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435767578-32743-12-git-send-email-jsnow@redhat.com
While the rest of the AHCI device can rely on a single bookmarked
pointer for the AHCI Command Header currently being processed, NCQ
is asynchronous and may have many commands in flight simultaneously.
Add a cmdh pointer to the ncq_tfs object and make the sglist prepare
function take an AHCICmdHeader pointer so we can be explicit about
where we'd like to build SGlists from.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435767578-32743-11-git-send-email-jsnow@redhat.com
uint16_t isn't enough to hold the real sector count, since a value of
zero implies a full 64K sectors, so we need a uint32_t here.
We *could* cheat and pretend that this value is 0-based and fit it in
a uint16_t, but I'd rather waste 2 bytes instead of a future dev's
10 minutes when they forget to +1/-1 accordingly somewhere.
See SATA 3.2, section 13.6.4.1 "READ FPDMA QUEUED".
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435767578-32743-9-git-send-email-jsnow@redhat.com
We already checked this in the handle_cmd phase, so just
change this to an assertion and simplify the error logic.
(Also, fix the switch indent, because checkpatch.pl yelled.)
((Sorry for churn.))
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435767578-32743-4-git-send-email-jsnow@redhat.com
For migration and werror=stop/rerror=stop resume purposes,
it will be convenient to have the command handy inside of
ncq_tfs.
Eventually, we'd like to avoid reading from the FIS entirely
after the initial read, so this is a byte (hah!) sized step
in that direction.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435767578-32743-3-git-send-email-jsnow@redhat.com
prepare_buf should not always grab as many descriptors
as it can, sometimes it should self-limit.
For example, an NCQ transfer of 1 sector with a PRDT that
describes 4GiB of data should not copy 4GiB of data, it
should just transfer that first 512 bytes.
PIO is not affected, because the dma_buf_rw dma helpers
already have a byte limit built-in to them, but DMA/NCQ
will exhaust the entire list regardless of requested size.
AHCI 1.3 specifies in section 6.1.6 Command List Underflow that
NCQ is not required to detect underflow conditions. Non-NCQ
pathways signal underflow by writing to the PRDBC field, which
will already occur by writing the actual transferred byte count
to the PRDBC, signaling the underflow.
Our NCQ pathways aren't required to detect underflow, but since our DMA
backend uses the size of the PRDT to determine the size of the transer,
if our PRDT is bigger than the transaction (the underflow condition) it
doesn't cost us anything to detect it and truncate the PRDT.
This is a recoverable error and is not signaled to the guest, in either
NCQ or normal DMA cases.
For BMDMA, the existing pathways should see no guest-visible difference,
but any bytes described in the overage will no longer be transferred
before indicating to the guest that there was an underflow.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435767578-32743-2-git-send-email-jsnow@redhat.com
NCQ commands have the concept of a "TAG" that they need to set,
but in the AHCI world, it is mandated that the TAG always match
the command slot that you executed the NCQ from.
See AHCI 9.3.1.1.5.2 "Native Queued Commands".
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435016308-6150-14-git-send-email-jsnow@redhat.com
If you try to execute an NCQ command before trying to engage with the
device by issuing an IDENTIFY command, the error bits that are part of
the signature will fool the test suite into thinking there was a failure.
Issue IDENTIFY first on "boot", which will clear the signature out of
the registers for us.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435016308-6150-9-git-send-email-jsnow@redhat.com
Several fields of the NCQFIS structure are ambiguously named. This patch
clarifies the intended (if unsupported) usage of the NCQ fields to aid
in creating more meaningful debug messages through the NCQ codepaths.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435016308-6150-2-git-send-email-jsnow@redhat.com
Test that we can survive a couple of cycles of running a basic identify
test, some IO, and resetting the HBA. Ensures that we can bring the HBA
back to compliant spec during the lifecycle of the VM.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1434470575-21625-5-git-send-email-jsnow@redhat.com
There's a handful of trivial bugs in the libqos/ahci functions,
squish them together.
- Zero cached pointers after freeing them
- The Command List Buffer is an array of 32x 32 byte structures, not
32x 8 byte pointers -- it's 1MiB, not 256 bytes. Zero it ALL.
- Free the correct command in ahci_pick_cmd.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1434470575-21625-4-git-send-email-jsnow@redhat.com
The only guidance the AHCI specification gives on memory access is:
"Register accesses shall have a maximum size of 64-bits; 64-bit access
must not cross an 8-byte alignment boundary."
I interpret this to mean that aligned or unaligned 1, 2 and 4 byte
accesses should work, as well as aligned 8 byte accesses.
In practice, a real Q35/ICH9 responds to 1, 2, 4 and 8 byte reads
regardless of alignment. Windows 7 can be observed making 1 byte
reads to the middle of 32 bit registers to fetch error codes.
Introduce a wrapper to support unaligned accesses to AHCI.
This wrapper will support aligned 8 byte reads, but will make
no effort to support unaligned 8 byte reads, which although they
will work on real hardware, are not guaranteed to work and do
not appear to be used by either Windows or Linux.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1434470575-21625-2-git-send-email-jsnow@redhat.com
Introduce an API numa_get_node(ram_addr_t addr, Error **errp) that
returns the NUMA node to which the given address belongs to. This
API works uniformly for both boot time as well as hotplugged memory.
This API is needed by sPAPR PowerPC to support
ibm,dynamic-reconfiguration-memory device tree node which is needed for
memory hotplug.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Store memory address range information of boot memory in address
range list of numa_info.
This helps to have a common NUMA node lookup by address function that
works for both boot-time memory and hotplugged memory.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
pc_dimm_plug() has code that will be needed for memory plug handlers
in other archs too. Extract code from pc_dimm_plug() into a generic
routine pc_dimm_memory_plug() that resides in pc-dimm.c. Also
correspondingly refactor re-usable unplug code into pc_dimm_memory_unplug().
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Move hotplug_memory_base and hotplug_memory fields of PCMachineState
into a separate structure so that the same can be made use of from
other architectures supporing memory hotplug.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Add display and head properties for input routing to
virtio-input devices, update multiseat documentation.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Several s390x patches including:
- missing virtio-1 related code for virtio-ccw
- bugfixes in ipl device, gdb, virtio-ccw
- bugfix in s390-ccw bios + rebuild
- introduce versioned machines for s390-ccw-virtio
# gpg: Signature made Thu Jul 2 15:05:34 2015 BST using RSA key ID C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
* remotes/cohuck/tags/s390x-20150702-v3:
s390x/migration: Introduce 2.4 machine
s390x/gdb: synchronize cpu state after modifying acrs
s390x/ipl: Fix boot if no bootindex was specified
virtio-ccw: migrate ->revision
s390x/virtio-ccw: support virtio-1 set_vq format
s390x/virtio-ccw: add virtio set-revision call
s390x/css: Add a callback for when subchannel gets disabled
s390-ccw.img: update
s390-ccw.img: Consume service interrupts
css: mss/mcss-e vs. migration
virtio-ccw: complete handling of guest-initiated resets
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The section footer changes commit f68945d42b ("Add a protective
section footer") and commit 37fb569c01 ("Disable section footers
on older machine types") broke migration for any non-versioned
machines.
This pinpoints a problem of s390-ccw machines: it needs to
be versioned to be compatible with future changes in common
code data structures such as section footers.
Let's introduce a version scheme for s390-ccw-virtio machines.
We will use the old s390-ccw-virtio name as alias to the latest
version as all existing libvirt XML for the ccw type were expanded
by libvirt to that name.
The only downside of this patch is, that the old alias s390-ccw
will no longer be available as machines can have only one alias,
but it should not really matter.
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Juan Quintela <quintela@redhat.com>
Cc: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Cc: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <1435742217-62246-1-git-send-email-borntraeger@de.ibm.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Whenever we touch the access control registers, we have to make sure that
the values will make it into kvm. Otherwise the change will simply be lost.
When synchronizing qemu and kvm, a normal KVM_PUT_RUNTIME_STATE does not take
care of these registers. Let's simply trigger a KVM_PUT_FULL_STATE sync,
so the values will directly be written to kvm. The performance overhead can
be ignored and this is much cleaner than manually writing these registers to kvm
via our two supported ways.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
commit fa92e218df ("s390x/ipl: avoid sign extension") introduced
a regression:
qemu-system-s390x -drive file=image.qcow,format=qcow2
does not boot, the bios states
"No virtio-blk device found!"
adding bootindex=1 does boot.
The reason is that the uint32_t as return value will not do the right
thing for the return -1 (default without bootindex).
The bios itself, will interpret a 64bit -1 as autodetect (but it will
interpret 32bit -1 as ccw device address ff.ff.ffff)
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: qemu-stable@nongnu.org # v2.3.0
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
We need to migrate the revision field as well. No compatibility
concerns as we already introduced migration of ->config_vector in
this release.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Support the new CCW_CMD_SET_VQ format for virtio-1 devices.
While we're at it, refactor the code a bit and enforce big endian
fields (which had always been required, even for legacy).
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Handle the virtio-ccw revision according to what the guest sets.
When revision 1 is selected, we have a virtio-1 standard device
with byteswapping for the virtio rings.
When a channel gets disabled, we have to revert to the legacy behavior
in case the next user of the device does not negotiate the revision 1
anymore (e.g. the boot firmware uses revision 1, but the operating
system only uses the legacy mode).
Note that revisions > 0 are still disabled.
[CH: assure memory accesses are always BE]
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Thu Jul 2 10:10:39 2015 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/block-pull-request:
block: remove redundant check before g_slist_find()
block/nfs: limit maximum readahead size to 1MB
block/iscsi: restore compatiblity with libiscsi 1.9.0
iotests: Use event_wait in wait_ready
qemu-iotests: Add test case for mirror with unmap
qemu-iotests: Make block job methods common
block: Remove bdrv_reset_dirty
block: Fix dirty bitmap in bdrv_co_discard
mirror: Do zero write on target if sectors not allocated
qmp: Add optional bool "unmap" to drive-mirror
block: Add bdrv_get_block_status_above
timer: Use a single definition of NSEC_PER_SEC for the whole codebase
timer: Move NANOSECONDS_PER_SECONDS to timer.h
blockdev: no need to drain+flush in hmp_drive_del
qapi: Rename 'dirty-bitmap' mode to 'incremental'
qcow2: Handle EAGAIN returned from update_refcount
block/iscsi: add support for request timeouts
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Only poll the specific type of event we are interested in, to avoid
stealing events that should be consumed by someone else.
Suggested-by: John Snow <jsnow@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This checks that the discard on mirror source that effectively zeroes
data is also reflected by the data of target.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Using this function would always be wrong because a dirty bitmap must
have a specific owner that consumes the dirty bits and calls
bdrv_reset_dirty_bitmap().
Remove the unused function to avoid future misuse.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Unsetting dirty globally with discard is not very correct. The discard may zero
out sectors (depending on can_write_zeroes_with_unmap), we should replicate
this change to destination side to make sure that the guest sees the same data.
Calling bdrv_reset_dirty also troubles mirror job because the hbitmap iterator
doesn't expect unsetting of bits after current position.
So let's do it the opposite way which fixes both problems: set the dirty bits
if we are to discard it.
Reported-by: wangxiaolong@ucloud.cn
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
If guest discards a source cluster, mirroring with bdrv_aio_readv is overkill.
Some protocols do zero upon discard, where it's best to use
bdrv_aio_write_zeroes, otherwise, bdrv_aio_discard will be enough.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
If specified as "true", it allows discarding on target sectors where source is
not allocated.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Like bdrv_is_allocated_above, this function follows the backing chain until seeing
BDRV_BLOCK_ALLOCATED. Base is not included.
Reimplement bdrv_is_allocated on top.
[Initialized bdrv_co_get_block_status_above() ret to 0 to silence
mingw64 compiler warning about the unitialized variable. assert(bs !=
base) prevents that case but I suppose the program could be compiled
with -DNDEBUG.
--Stefan]
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
If we wish to make differential backups a feature that's easy to access,
it might be pertinent to rename the "dirty-bitmap" mode to "incremental"
to make it clear what /type/ of backup the dirty-bitmap is helping us
perform.
This is an API breaking change, but 2.4 has not yet gone live,
so we have this flexibility.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1433463642-21840-2-git-send-email-jsnow@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
libiscsi starting with 1.15 will properly support timeout of iscsi
commands. The default will remain no timeout, but this can
be changed via cmdline parameters, e.g.:
qemu -iscsi timeout=30 -drive file=iscsi://...
If a timeout occurs a reconnect is scheduled and the timed out command
will be requeued for processing after a successful reconnect.
The required API call iscsi_set_timeout is present since libiscsi
1.10 which was released in October 2013. However, due to some bugs
in the libiscsi code the use is not recommended before version 1.15.
Please note that this patch bumps the libiscsi requirement to 1.10
to have all function and macros defined. The patch fixes also a
off-by-one error in the NOP timeout calculation which was fixed
while touching these code parts.
Signed-off-by: Peter Lieven <pl@kamp.de>
Message-id: 1434455107-19328-1-git-send-email-pl@kamp.de
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Do not take the BQL before dispatching MMIO requests of KVM VCPUs.
Instead, address_space_rw will do it if necessary. This enables completely
BQL-free MMIO handling in KVM mode for upcoming devices with fine-grained
locking.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1434646046-27150-10-git-send-email-pbonzini@redhat.com>
Do not take the BQL before dispatching PIO requests of KVM VCPUs.
Instead, address_space_rw will do it if necessary. This enables
completely BQL-free PIO handling in KVM mode for upcoming devices with
fine-grained locking.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1434646046-27150-8-git-send-email-pbonzini@redhat.com>
This opens the path to get rid of the iothread lock on vmexits in KVM
mode. On x86, the in-kernel irqchips has to be used because we otherwise
need to synchronize APIC and other per-cpu state accesses that could be
changed concurrently.
Regarding pre/post-run callbacks, s390x and ARM should be fine without
specific locking as the callbacks are empty. MIPS and POWER require
locking for the pre-run callback.
For the handle_exit callback, it is non-empty in x86, POWER and s390.
Some POWER cases could do without the locking, but it is left in
place for now.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1434646046-27150-7-git-send-email-pbonzini@redhat.com>
The MMIO case is further broken up in two cases: if the caller does not
hold the BQL on invocation, the unlocked one takes or avoids BQL depending
on the locking strategy of the target memory region and its coalesced
MMIO handling. In this case, the caller should not hold _any_ lock
(a friendly suggestion which is disregarded by virtio-scsi-dataplane).
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Frederic Konrad <fred.konrad@greensocs.com>
Message-Id: <1434646046-27150-6-git-send-email-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This function will be used to avoid recursive locking of the iothread lock
whenever address_space_rw/ld*/st* are called with the BQL held, which is
almost always the case.
Tracking whether the iothread is owned is very cheap (just use a TLS
variable) but requires some care because now the lock must always be
taken with qemu_mutex_lock_iothread(). Previously this wasn't the case.
Outside TCG mode this is not a problem. In TCG mode, we need to be
careful and avoid the "prod out of compiled code" step if already
in a VCPU thread. This is easily done with a check on current_cpu,
i.e. qemu_in_vcpu_thread().
Hopefully, multithreaded TCG will get rid of the whole logic to kick
VCPUs whenever an I/O event occurs!
Cc: Frederic Konrad <fred.konrad@greensocs.com>
Message-Id: <1434646046-27150-3-git-send-email-pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The next patch will require the BQL to be always taken with
qemu_mutex_lock_iothread(), while right now this isn't the case.
Outside TCG mode this is not a problem. In TCG mode, we need to be
careful and avoid the "prod out of compiled code" step if already
in a VCPU thread. This is easily done with a check on current_cpu,
i.e. qemu_in_vcpu_thread().
Hopefully, multithreaded TCG will get rid of the whole logic to kick
VCPUs whenever an I/O event occurs!
Cc: Frederic Konrad <fred.konrad@greensocs.com>
Message-Id: <1434646046-27150-2-git-send-email-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Last month, we experienced several guests crash(6cores-8cores), qemu logs
display the following messages:
qemu-system-x86_64: /build/qemu-2.1.2/kvm-all.c:976:
kvm_irqchip_commit_routes: Assertion `ret == 0' failed.
After analysis and verification, we can confirm it's irq-balance
daemon(in guest) leads to the assertion failure. Start a 8 core guest with
two disks, execute the following scripts will reproduce the BUG quickly:
irq_affinity.sh
========================================================================
vda_irq_num=25
vdb_irq_num=27
while [ 1 ]
do
for irq in {1,2,4,8,10,20,40,80}
do
echo $irq > /proc/irq/$vda_irq_num/smp_affinity
echo $irq > /proc/irq/$vdb_irq_num/smp_affinity
dd if=/dev/vda of=/dev/zero bs=4K count=100 iflag=direct
dd if=/dev/vdb of=/dev/zero bs=4K count=100 iflag=direct
done
done
========================================================================
QEMU setup static irq route entries in kvm_pc_setup_irq_routing(), PIC and
IOAPIC share the first 15 GSI numbers, take up 23 GSI numbers, but take up
38 irq route entries. When change irq smp_affinity in guest, a dynamic route
entry may be setup, the current logic is: if allocate GSI number succeeds,
a new route entry can be added. The available dynamic GSI numbers is
1021(KVM_MAX_IRQ_ROUTES-23), but available irq route entries is only
986(KVM_MAX_IRQ_ROUTES-38), GSI numbers greater than route entries.
irq-balance's behavior will eventually leads to total irq route entries
exceed KVM_MAX_IRQ_ROUTES, ioctl(KVM_SET_GSI_ROUTING) fail and
kvm_irqchip_commit_routes() trigger assertion failure.
This patch fix the BUG.
Signed-off-by: Wenshuang Ma <kevinnma@tencent.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We need a possibility to run code when a subchannel gets disabled.
This patch adds the necessary infrastructure.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
We have to consume the outstanding service interrupt after each
service call, otherwise a correct implementation will return
CC=2 on subsequent service calls.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Our main channel_subsys structure is not a device (yet), but we need
to setup mss/mcss-e again if the guest had enabled it before. Use
a hack that should catch most configurations (assuming that the guest
will have enabled at least one device in higher subchannel sets or
channel subsystems if it enabled the functionality.)
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
For a guest-initiated reset, we need to not only reset the virtio device,
but also reset the VirtioCcwDevice into a clean state. This includes
resetting the indicators, or else a guest will not be able to e.g.
switch from classic interrupts to adapter interrupts.
Split off this routine into a new function virtio_ccw_reset_virtio()
to make the distinction between resetting the virtio-related devices
and the base subchannel device clear.
CC: qemu-stable@nongnu.org
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
TriCore bugfixes
# gpg: Signature made Mon Jun 29 13:08:17 2015 BST using RSA key ID 6B69CA14
# gpg: Good signature from "Bastian Koppelmann <kbastian@mail.uni-paderborn.de>"
* remotes/bkoppelmann/tags/pull-tricore-20150629:
target-tricore: fix depositing bits from PCXI into ICR
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
virtio, pci fixes, enhancements
Almost exclusively bugfixes, though in this case,
we are adding functionality to the pxb in order
to make OVMF work on it.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Fri Jun 26 14:43:27 2015 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream:
Fix glib_subprocess test
hw/pci-bridge: format special OFW unit address for PXB host
hw/core: explicit OFW unit address callback for SysBusDeviceClass
hw/pci-bridge: disable SHPC in PXB
hw/pci-bridge: introduce "shpc" property
hw/pci: introduce shpc_present() helper function
hw/pci-bridge: add macro for "msi" property
hw/pci-bridge: add macro for "chassis_nr" property
hw/pci-bridge: expose _test parameter in SHPC_VMSTATE()
migration: introduce VMSTATE_BUFFER_UNSAFE_INFO_TEST()
add pci-bridge-seat
pc: cleanup and convert TMP ACPI device description to AML API
MAINTAINERS: add ACPI entry
vhost: correctly pass error to caller in vhost_dev_enable_notifiers()
balloon: add a feature bit to let Guest OS deflate balloon on oom
qdev: fix OVERFLOW_BEFORE_WIDEN
virito-pci: fix OVERRUN problem
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This is one of very few things in exec-all with a genuine CPU
architecture dependency. Move these hashing helpers to a new
header to trim exec-all.h down to a near architecture-agnostic
header.
The defs are only used by cpu-exec and translate-all which are both
arch-obj's so the new tb-hash.h has no core code usage.
Reviewed-by: Richard Henderson <rth@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-Id: <9d048b96f7cfa64a4d9c0b88e0dd2877fac51d41.1433052532.git.crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
target-arm queue:
* Change the virt board's default interface type for block devices to virtio
* Improve some error messages that will now be triggered by some incorrect
but previously worked-by-accident command lines
* Print ELR if we're doing debug logging of AArch64 exception entry
* Handle the "completely empty semihosting commandline" correctly for
softmmu (we already did for linux-user)
* Add GICv2m description to ACPI tables for virt board
* Fix some incorrect table revision entries in virt board ACPI tables
# gpg: Signature made Fri Jun 26 14:29:39 2015 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
* remotes/pmaydell/tags/pull-target-arm-20150626:
hw/arm/virt: Make block devices default to virtio
qdev-properties-system: Improve error message for drive assignment conflict
qdev-properties-system: Change set_pointer's parse callback to use Error
target-arm: A64: Print ELR when taking exceptions
target-arm: default empty semihosting cmdline
hw/arm/virt-acpi-build: Add GICv2m description in ACPI MADT table
hw/arm/virt-acpi-build: Fix table revision and some comments
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Now we have virtio-pci, we can make the virt board's default block
device type be IF_VIRTIO. This allows users to use simplified
command lines that don't have to explicitly create virtio-pci-blk
devices; the -hda &c very short options now also work.
This means we also need to set no_cdrom to avoid getting a
default cdrom device -- this is needed because the virtio-blk
device will fail if it is connected to a block backend with
no media, which is what the default cdrom device typically is.
Providing a cdrom with media via -cdrom will succeed, but silently
create a device with non-removable medium. this is probably
not really what the user wants, but is the best we can do now.
Note that this change means that some command lines which used
to work (by accident) will stop working. Where a drive was connected
manually to a device but without 'if=none' being specified, we
used to treat this as an IDE drive, which we would then not autoplug
because the board doesn't support IDE. Now we will treat it as a
virtio disk and autoplug it, which means the attempt to use the
drive manually will fail:
qemu-system-arm: -drive file=img.qcow2,id=foo: Drive 'foo' is already
in use because it has been automatically connected to another device
(did you need 'if=none' in the drive options?)
The command line will have to be changed to include 'if=none', as the
error message suggests.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435068107-12594-4-git-send-email-peter.maydell@linaro.org
If the user forgot if=none on their drive specification they're likely
to get an error message because the drive is assigned once automatically
by QEMU and once by the manual id=/drive= user command line specification.
Improve the error message produced in this case to explicitly guide the
user towards if=none.
We rephrase the "drive conflict but not for an if=something" error as
well to keep the wording in line.
The two cases that change are:
(1) Drive specified as to be auto-connected and also manually connected
(and the board does handle this if= type):
qemu-system-x86_64 -nodefaults -display none \
-drive if=scsi,file=tmp.qcow2,id=foo -device ide-hd,drive=foo
Previously:
qemu-system-x86_64: -device ide-hd,drive=foo: Property 'ide-hd.drive'
can't take value 'foo', it's in use
Now:
qemu-system-x86_64: -device ide-hd,drive=foo: Drive 'foo' is already in
use because it has been automatically connected to another device (did
you need 'if=none' in the drive options?)
(2) Drive specified to be manually connected in two different ways:
qemu-system-x86_64 -nodefaults -display none \
-drive if=none,file=tmp.qcow2,id=foo -device ide-hd,drive=foo \
-device ide-hd,drive=foo
Previously:
qemu-system-x86_64: -device ide-hd,drive=foo: Property 'ide-hd.drive'
can't take value 'foo', it's in use
Now:
qemu-system-x86_64: -device ide-hd,drive=foo: Drive 'foo' is already in
use by another device
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435068107-12594-3-git-send-email-peter.maydell@linaro.org
Instead of having set_pointer() call a parse callback which returns
an error number that we then convert to an Error string with
error_set_from_qdev_prop_error(), make the parse callback take an
Error** and set the error itself. This will allow parse routines
to provide more helpful error messages than the generic ones.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435068107-12594-2-git-send-email-peter.maydell@linaro.org
MIPS patches 2015-06-26
Changes:
* MIPS UHI semihosting support
* microMIPS32 R6 support
# gpg: Signature made Fri Jun 26 10:42:33 2015 BST using RSA key ID 0B29DA6B
# gpg: Good signature from "Leon Alrae <leon.alrae@imgtec.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 8DD3 2F98 5495 9D66 35D4 4FC0 5211 8E3C 0B29 DA6B
* remotes/lalrae/tags/mips-20150626:
target-mips: add mips32r6-generic CPU definition
target-mips: microMIPS32 R6 POOL16{A, C} instructions
target-mips: microMIPS32 R6 Major instructions
target-mips: microMIPS32 R6 POOL32{I, C} instructions
target-mips: microMIPS32 R6 POOL32F instructions
target-mips: microMIPS32 R6 POOL32A{XF} instructions
target-mips: microMIPS32 R6 branches and jumps
target-mips: add microMIPS32 R6 opcode enum
target-mips: signal RI for removed instructions in microMIPS R6
target-mips: raise RI exceptions when FIR.PS = 0
target-mips: rearrange gen_compute_compact_branch
target-mips: refactor {D}LSA, {D}ALIGN, {D}BITSWAP
target-mips: remove an unused argument
target-mips: add microMIPS TLBINV, TLBINVF
target-mips: fix {RD, WR}PGPR in microMIPS
target-mips: convert host to MIPS errno values when required
target-mips: add Unified Hosting Interface (UHI) support
target-mips: remove identical code in different branch
hw/mips: Do not clear BEV for MIPS malta kernel load
include/softmmu-semi.h: Make semihosting support 64-bit clean
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
64-bit paired-single (PS) floating point data type is optional in the
pre-Release 6.
It has to raise RI exception when PS type is not implemented. (FIR.PS = 0)
(The PS data type is removed in the Release 6.)
Loongson-2E and Loongson-2F don't have any implementation field in
FCSR0(FIR) but do support PS data format, therefore for these cores RI will
not be signalled regardless of PS bit.
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Convert only errno values which can be returned by system calls in
mips-semi.c and are not generic to all archs.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Add UHI semihosting support for MIPS. QEMU run with "-semihosting" option
will alter the behaviour of SDBBP 1 instruction -- UHI operation will be
called instead of generating a debug exception.
Also tweak Malta's pseudo-bootloader. On CPU reset the $4 register is set
to -1 if semihosting arguments are passed to indicate that the UHI
operations should be used to obtain input arguments.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
The BEV flag controls whether the boot exception vector is still
in place when starting a kernel. When cleared the exception vector
at EBASE (or hard coded address of 0x80000000) is used instead.
The early stages of the linux kernel would benefit from BEV still
being set to ensure any faults get handled by the boot rom exception
handlers. This is a moot point for system qemu as there aren't really
any BEV handlers, but there are other good reasons to change this...
The UHI (semi-hosting interface) defines special behaviours depending
on whether an application starts in an environment with BEV set or
cleared. When BEV is set then UHI assumes that a bootloader is
relatively dumb and has no advanced exception handling logic.
However, when BEV is cleared then UHI assumes that the bootloader
has the ability to handle UHI exceptions with its exception handlers
and will unwind and forward UHI SYSCALL exceptions to the exception
vector that was installed prior to running the application.
Signed-off-by: Matthew Fortune <matthew.fortune@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Correct addresses passed around in semihosting to use a data type suitable
for both 32-bit and 64-bit targets.
Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
# gpg: Signature made Wed Jun 24 16:37:23 2015 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/net-pull-request:
net: simplify net_client_init1()
net: drop if expression that is always true
net: raise an error if -net type is invalid
net: replace net_client_init1() netdev whitelist with blacklist
net: add missing "netmap" to host_net_devices[]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# gpg: Signature made Wed Jun 24 16:27:53 2015 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/block-pull-request:
virito-blk: drop duplicate check
qemu-iotests: fix 051.out after qdev error message change
iov: don't touch iov in iov_send_recv()
raw-posix: Introduce hdev_is_sg()
raw-posix: Use DPRINTF for DEBUG_FLOPPY
raw-posix: DPRINTF instead of DEBUG_BLOCK_PRINT
Fix migration in case of scsi-generic
block: Use bdrv_is_sg() everywhere
nvme: Fix memleak in nvme_dma_read_prp
vvfat: add a label option
util/hbitmap: Add an API to reset all set bits in hbitmap
virtio-blk: Use blk_drain() to drain IO requests
block-backend: Introduce blk_drain()
throttle: Check current timers before updating any_timer_armed[]
block: Let bdrv_drain_all() to call aio_poll() for each AioContext
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit f006cf7fa9 ("qdev-monitor:
Propagate errors through qdev_device_add()") dropped a meaningless error
message. This change in output caused qemu-iotests 051 to fail:
QEMU_PROG: -device ide-drive,drive=disk: Device initialization failed.
-QEMU_PROG: -device ide-drive,drive=disk: Device 'ide-drive' could not be initialized
Update 051.out so the test passes again.
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1435071369-30936-1-git-send-email-stefanha@redhat.com
*) Do not use AI_ADDRCONFIG on listening sockets, because this flag
makes it impossible to explicitly listen on '127.0.0.1' if no global
ipv4 address is configured additionally, making this a very
uncomfortable option.
*) Add AI_V4MAPPED hint for connecting sockets.
If your system is globally only connected via ipv6 you often still want
to be able to use '127.0.0.1' and 'localhost' (even if localhost doesn't
also have an ipv6 entry).
For example, PVE - unless explicitly asking for insecure mode - uses
ipv4 loopback addresses with QEMU for live migrations tunneled over SSH.
These fail to start because AI_ADDRCONFIG makes getaddrinfo refuse to
work with '127.0.0.1'.
As for the AI_V4MAPPED flag: glibc uses it by default, and providing
non-0 flags removes it. I think it makes sense to use it.
I also want to point out that glibc explicitly sidesteps POSIX standards
when passing 0 as hints by then assuming both AI_V4MAPPED and
AI_ADDRCONFIG (the latter being a rather weird choice IMO), while
according to POSIX.1-2001 it should be assumed 0. (glibc considers its
choice an improvement.)
Since either AI_CANONNAME or AI_PASSIVE are passed in our cases, glibc's
default flags in turn are disabled again unless explicitly added, which
I do with this patch.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Cscope and TAGS files work in source directory rather than the build
directory, also, don't ask users to run configure first, because they
may have an out of tree build.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Doesn't appear to make a difference, but let's use it consistently.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Recent commit 3751d7c "vl: allow full-blown QemuOpts syntax for
-global" overloaded its existing argument syntax DRIVER.PROP=VALUE
with QemuOpts syntax. Unambigious as long as no DRIVER contains '='.
Its documentation claims that "the two syntaxes are equivalent."
Improve it to spell out how exactly the old syntax gets desugared into
the new one.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This is an attempt to rearrange configure --help output a bit
and consolidate pairs of --enable/disable into its own section.
After this, help text is easier to sort, manage and read.
More descriptive text can be added as well, since we now have
more space.
While at it, mention en/dis-able-vte.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
libcacard.pc file lists only one package in Requires
field, which is nss, while glib-2.0 is also a requiriment.
Furthermore, for libraries used internally by the library
(this is the way nss and glib are used by libcacard),
Requires.private shold be used instead of Requires.
Fix both issues.
This does not affect linking of qemu because it links
with objects from libcacard directly.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
When loading migration fails due to a disagreement about
PCI config data we don't currently get any errors explaining
that was the cause of the problem or which byte in the config
data was at fault.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Commit 72ac97cdfc added two equivalent versions of decimal128Local.h,
one in libdecnumber/dpd/ and another in include/libdecnumber/dpd/.
Being identical by the code, the two files however differs in the
licensing terms. The one in libdecnumber/dpd/ (which is being
removed by this patch) is licensed as GPL3.1 (plus gcc runtime
exception), which, as far as I know, is not compatible with GPL-2.
This file is not used (it is included from
include/libdecnumber/dpd/decimal128.h, so version in include/ is
used).
More, the version in include/ can also be removed, since none
of the 3 defines from that file are actually used by the code.
Even more, one of the defines from there, decimal128SetSign,
is redefined (to equivalent value) in libdecnumber/dpd/decimal128.c,
but again, never used.
What a mess...
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
The help text says --extra-ldflags is appended to LDFLAGS so make it so.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
xen-220615, more SOB lines
# gpg: Signature made Tue Jun 23 17:19:08 2015 BST using RSA key ID 70E1AE90
# gpg: Good signature from "Stefano Stabellini <stefano.stabellini@eu.citrix.com>"
* remotes/sstabellini/tags/xen-220615-3:
Revert "xen-hvm: increase maxmem before calling xc_domain_populate_physmap"
xen/pass-through: constify some static data
xen/pass-through: log errno values rather than function return ones
xen/pass-through: ROM BAR handling adjustments
xen/pass-through: fold host PCI command register writes
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This reverts commit c1d322e604.
The original commit fixes a bug when assigning a large number of
devices which require option roms to a guest. (One known
configuration that needs extra memory is having more than 4 emulated
NICs assigned. Three or fewer NICs seems to work without this
functionality.)
However, by unilaterally increasing maxmem, it introduces two
problems.
First, now libxl's calculation of the required maxmem during migration
is broken -- any guest which exercised this functionality will fail on
migration. (Guests which have the default number of devices are not
affected.)
Secondly, it makes it impossible for a higher-level toolstack or
administer to predict how much memory a VM will actually use, making
it much more difficult to effectively use all of the memory on a
machine.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This is done indirectly by adjusting two typedefs and helps emphasizing
that the respective tables aren't supposed to be modified at runtime
(as they may be shared between devices).
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Functions setting errno commonly return just -1, which is of no
particular use in the log file.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Expecting the ROM BAR to be written with an all ones value when sizing
the region is wrong - the low bit has another meaning (enable/disable)
and bits 1..10 are reserved. The PCI spec also mandates writing all
ones to just the address portion of the register.
Use suitable constants also for initializing the ROM BAR register field
description.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
The code introduced to address XSA-126 allows simplification of other
code in xen_pt_initfn(): All we need to do is update "cmd" suitably,
as it'll be written back to the host register near the end of the
function anyway.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Until now, an SG device was identified only by checking if its path
started with "/dev/sg". Then, hdev_open() would set the bs->sg flag
accordingly. The patch relies on the actual properties of the device
instead of the specified file path.
To this end, test for an SG device (e.g. /dev/sg0) by ensuring that
all of the following holds:
- The specified file name corresponds to a character device
- The device supports the SG_GET_VERSION_NUM ioctl
- The device supports the SG_GET_SCSI_ID ioctl
Signed-off-by: Dimitris Aragiorgis <dimara@arrikto.com>
Message-id: 1435056300-14924-6-git-send-email-dimara@arrikto.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Building the QEMU tools fails if we #define DEBUG_BLOCK inside
block/raw-posix.c. Here instead of adding qemu-log.o in block-obj-y
so that DEBUG_BLOCK_PRINT can be used, we substitute the latter with
a simple DPRINTF() (that does not cause bit-rot).
Signed-off-by: Dimitris Aragiorgis <dimara@arrikto.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435056300-14924-4-git-send-email-dimara@arrikto.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
During migration, QEMU uses fsync()/fdatasync() on the open file
descriptor for read-write block devices to flush data just before
stopping the VM.
However, fsync() on a scsi-generic device returns -EINVAL which
causes the migration to fail. This patch skips flushing data in case
of an SG device, since submitting SCSI commands directly via an SG
character device (e.g. /dev/sg0) bypasses the page cache completely,
anyway.
Note that fsync() not only flushes the page cache but also the disk
cache. The scsi-generic device never sends flushes, and for
migration it assumes that the same SCSI device is used by the
destination host, so it does not issue any SCSI SYNCHRONIZE CACHE
(10) command.
Finally, remove the bdrv_is_sg() test from iscsi_co_flush() since
this is now redundant (we flush the underlying protocol at the end
of bdrv_co_flush() which, with this patch, we never reach).
Signed-off-by: Dimitris Aragiorgis <dimara@arrikto.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435056300-14924-3-git-send-email-dimara@arrikto.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Until now the vvfat volume label was hardcoded to be
"QEMU VVFAT", now you can pass a file.label=labelname option
to the -drive to change it.
The FAT structure defines the volume label to be limited to
11 bytes and is filled up spaces when shorter than that. The
trailing spaces however aren't exposed to the user by
operating systems.
[Added missing comment '#' characters in block-core.json to fix build
errors.
--Stefan]
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Message-id: 1434706529-13895-2-git-send-email-w.bumiller@proxmox.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Calling throttle_group_config() cancels all timers from a particular
BlockDriverState, so any_timer_armed[] should be updated accordingly.
However, with the current code it may happen that a timer is armed in
a different BlockDriverState from the same group, so any_timer_armed[]
would be set to false in a situation where there is still a timer
armed.
The consequence is that we might end up with two timers armed. This
should not have any noticeable impact however, since all accesses to
the ThrottleGroup are protected by a lock, and the situation would
become normal again shortly thereafter as soon as all timers have been
fired.
The correct way to solve this is to check that we're actually
cancelling a timer before updating any_timer_armed[].
Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 1434382875-3998-1-git-send-email-berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Monitor patches
# gpg: Signature made Mon Jun 22 18:56:18 2015 BST using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
* remotes/armbru/tags/pull-monitor-2015-06-22: (24 commits)
Include monitor/monitor.h exactly where needed
Include qapi/qmp/qerror.h exactly where needed
qerror: Move #include out of qerror.h
qerror: Finally unused, clean up
qmp: Wean off qerror_report()
tpm: Avoid qerror_report() outside QMP command handlers
qerror: Clean up QERR_ macros to expand into a single string
qerror: Eliminate QERR_DEVICE_NOT_FOUND
vl: Use error_report() for --display errors
vl: Avoid qerror_report() outside QMP command handlers
QemuOpts: Wean off qerror_report_err()
qdev-monitor: Propagate errors through qdev_device_add()
qdev-monitor: Propagate errors through set_property()
qdev-monitor: Convert qbus_find() to Error
qdev-monitor: Fix check for full bus
qdev-monitor: Stop error avalanche in qbus_find_recursive()
disas: Remove uses of CPU env
monitor: Split mon_get_cpu fn to remove ENV_GET_CPU
monitor: Fix failure path for "S" argument
monitor: Point to "help" command on syntax error
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This allows to assign host input devices to the guest:
qemu -device virtio-input-host-pci,evdev=/dev/input/event<nr>
The guest gets exclusive access to the input device, so be careful
with assigning the keyboard if you have only one connected to your
machine.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Move properties from virtio-*-pci to virtio-*-device.
Also make better use of QOM and attach common properties
to the abstract parent classes (virtio-input-device and
virtio-input-pci-device).
Switch the hid device instance init functions over to use
virtio_instance_init_common, so we get the properties of the
virtio device aliased properly to the virtio pci proxy.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Remove it except for two things in qerror.h:
* Two #include to be cleaned up separately to avoid cluttering this
patch.
* The QERR_ macros. Mark as obsolete.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
The traditional QMP command handler interface
int qmp_FOO(Monitor *mon, const QDict *params, QObject **ret_data);
doesn't provide for returning an Error object. Instead, the handler
is expected to stash it in the monitor with qerror_report().
When we rebased QMP on top of QAPI, we didn't change this interface.
Instead, commit 776574d introduced "middle mode" as a temporary aid
for converting existing QMP commands to QAPI one by one. More than
three years later, we're still using it.
Middle mode has two effects:
* Instead of the native input marshallers
static void qmp_marshal_input_FOO(QDict *, QObject **, Error **)
it generates input marshallers conforming to the traditional QMP
command handler interface.
* It suppresses generation of code to register them with
qmp_register_command()
This permits giving them internal linkage.
As long as we need qmp-commands.hx, we can't use the registry behind
qmp_register_command(), so the latter has to stay for now.
The former has to go to get rid of qerror_report(). Changing all QMP
commands to fit the QAPI mold in one go was impractical back when we
started, but by now there are just a few stragglers left:
do_qmp_capabilities(), qmp_qom_set(), qmp_qom_get(), qmp_object_add(),
qmp_netdev_add(), do_device_add().
Switch middle mode to generate native input marshallers, and adapt the
stragglers. Simplifies both the monitor code and the stragglers.
Rename do_qmp_capabilities() to qmp_capabilities(), and
do_device_add() to qmp_device_add, because that's how QMP command
handlers are named today.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
qerror_report() is a transitional interface to help with converting
existing monitor commands to QMP. It should not be used elsewhere.
Replace by error_report().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
These macros expand into error class enumeration constant, comma,
string. Unclean. Has been that way since commit 13f59ae.
The error class is always ERROR_CLASS_GENERIC_ERROR since the previous
commit.
Clean up as follows:
* Prepend every use of a QERR_ macro by ERROR_CLASS_GENERIC_ERROR, and
delete it from the QERR_ macro. No change after preprocessing.
* Rewrite error_set(ERROR_CLASS_GENERIC_ERROR, ...) into
error_setg(...). Again, no change after preprocessing.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Error classes other than ERROR_CLASS_GENERIC_ERROR should not be used
in new code. Hiding them in QERR_ macros makes new uses hard to spot.
Fortunately, there's just one such macro left. Eliminate it with this
coccinelle semantic patch:
@@
expression EP, E;
@@
-error_set(EP, QERR_DEVICE_NOT_FOUND, E)
+error_set(EP, ERROR_CLASS_DEVICE_NOT_FOUND, "Device '%s' not found", E)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Results in nicer error messages. Before this patch:
Invalid GTK option string: gtk,lirum-larum
After:
qemu-system-x86_64: -display gtk,lirum-larum: Invalid GTK option string
Of course, the thing ought to use QemuOpts instead of parsing by hand.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
qerror_report() is a transitional interface to help with converting
existing monitor commands to QMP. It should not be used elsewhere.
Replace by error_report() in initial startup helpers parse_sandbox()
and parse_add_fd().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP. It should not be used
elsewhere.
The only remaining user in qemu-option.c is qemu_opts_parse(). Is it
used in QMP context? If not, we can simply replace
qerror_report_err() by error_report_err().
The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are
clearly not in QMP context.
The uses in vl.c aren't either, because the only QMP command handlers
there are qmp_query_status() and qmp_query_machines(), and they don't
call it.
Remaining uses:
* drive_def(): Command line -drive and such, HMP drive_add and pci_add
* hmp_chardev_add(): HMP chardev-add
* monitor_parse_command(): HMP core
* tmp_config_parse(): Command line -tpmdev
* net_host_device_add(): HMP host_net_add
* net_client_parse(): Command line -net and -netdev
* qemu_global_option(): Command line -global
* vnc_parse_func(): Command line -display, -vnc, default display, HMP
change, QMP change. Bummer.
* qemu_pci_hot_add_nic(): HMP pci_add
* usb_net_init(): Command line -usbdevice, HMP usb_add
Propagate errors through qemu_opts_parse(). Create a convenience
function qemu_opts_parse_noisily() that passes errors to
error_report_err(). Switch all non-QMP users outside tests to it.
That leaves vnc_parse_func(). Propagate errors through it. Since I'm
touching it anyway, rename it to vnc_parse().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Also polish an error message while I'm touching the line anyway,
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
As usual, the conversion breaks printing explanatory messages after
the error: actual printing of the error gets delayed, so the
explanations precede rather than follow it.
Pity. Disable them for now. See also commit 7216ae3.
While there, eliminate QERR_BUS_NOT_FOUND, and clean up unusual
spelling in the error message.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Property bus has always been too screwed up to be really usable for
values other than plain bus IDs. This just fixes a bug that crept in
in commit 1395af6 "qdev: add a maximum device allowed field for the
bus."
It doesn't always fail when it should:
$ qemu-system-x86_64 -nodefaults -device virtio-serial-pci -device virtio-rng-device,bus=pci.0/virtio-serial-pci/virtio-bus
Happily plugs the virtio-rng-device into the virtio-bus provided by
virtio-serial-pci, even though its only slot is already occupied by a
virtio-serial-device.
And sometimes fails when it shouldn't:
$ qemu-system-x86_64 -nodefaults -device virtio-serial-pci -device virtserialport,bus=virtio-bus/virtio-serial-device
Yes, the virtio-bus is full, but the virtio-serial-bus provided by
virtio-serial-device isn't, and that's the one we're trying to use.
Root cause: we check "bus full" when we resolve the first element of
the path. That's the correct one only when it's also the last one.
Fix by moving the "bus full" check to right before we return a bus.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reproducer:
$ qemu-system-x86_64 -nodefaults -device virtio-rng-pci -device virtio-rng-pci -device virtio-rng-device,bus=virtio-bus
qemu-system-x86_64: -device virtio-rng-device,bus=virtio-bus: Bus 'virtio-bus' is full
qemu-system-x86_64: -device virtio-rng-device,bus=virtio-bus: Bus 'virtio-bus' is full
qemu-system-x86_64: -device virtio-rng-device,bus=virtio-bus: Bus 'virtio-bus' not found
qbus_find_recursive() reports the "is full" error itself, and leaves
reporting "not found" to its caller. The result is confusion. Write
it a function contract that permits leaving all error reporting to the
caller, and implement it. Update callers to detect and report "is
full".
Screwed up when commit 1395af6 added the max_dev limit and the "is
full" error condition to enforce it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The monitor currently has one helper, mon_get_cpu() which will return
an env pointer. The target specific users of this API want an env, but
all the target agnostic users really just want the cpu pointer. These
users then need to use the target-specifically defined ENV_GET_CPU to
navigate back up to the CPU from the ENV. Split the API for the two
uses cases to remove all need for ENV_GET_CPU.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Since the "S" argument type is only used with the "?" flag,
the bug can't bite.
Signed-off-by: Bandan Das <bsd@redhat.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
When a command fails due to incorrect syntax or input, suggest using
the "help" command to get more information about the command. This
is only applicable for HMP.
Signed-off-by: Bandan Das <bsd@redhat.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
There's too much going on in monitor_parse_command().
Split up the arguments parsing bits into a separate function
monitor_parse_arguments(). Let the original function check for
command validity and sub-commands if any and return data (*cmd)
that the newly introduced function can process and return a
QDict. Also, pass a pointer to the cmdline to track current
parser location.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Bandan Das <bsd@redhat.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The preferred solution is to use tracepoints and there
is good chance of bitrot with the debug prints not being
enabled at compile time. Remove them.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Bandan Das <bsd@redhat.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Now that qbool is fixed, let's fix getting and setting a bool
value to a qdict member to also use C99 bool rather than int.
I audited all callers to ensure that the changed return type
will not cause any changed semantics.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
We require a C99 compiler, so let's use 'bool' instead of 'int'
when dealing with boolean values. There are few enough clients
to fix them all in one pass.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-06-22 17:40:00 +02:00
1374 changed files with 66517 additions and 32325 deletions
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