With "ps2: use QEMU qcodes instead of scancodes", key handling was
changed to qcode base. But all scancodes are not converted to new one.
This adds some missing qcodes/scancodes what I found in using.
[set1 and set3 are from <hpoussin@reactos.org>]
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
For builds with Mingw-w64 as it is included in Cygwin, there are two
header files which define KEY_EVENT with different values.
This results in lots of compiler warnings like this one:
CC vl.o
In file included from /qemu/include/ui/console.h:340:0,
from /qemu/vl.c:76:
/usr/i686-w64-mingw32/sys-root/mingw/include/curses.h:1522:0: warning: "KEY_EVENT" redefined
#define KEY_EVENT 0633 /* We were interrupted by an event */
In file included from /usr/share/mingw-w64/include/windows.h:74:0,
from /usr/share/mingw-w64/include/winsock2.h:23,
from /qemu/include/sysemu/os-win32.h:29,
from /qemu/include/qemu/osdep.h:100,
from /qemu/vl.c:24:
/usr/share/mingw-w64/include/wincon.h:101:0: note: this is the location of the previous definition
#define KEY_EVENT 0x1
QEMU only uses the KEY_EVENT macro from wincon.h.
Therefore we can undefine the macro coming from curses.h.
The explicit include statement for curses.h in ui/curses.c is not needed
and was removed.
Those two modifications fix the redefinition warnings.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Message-id: 20161119185318.10564-1-sw@weilnetz.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
If the buffer is not big enough, snprintf() does not return the number
of bytes that have been written to the buffer, but the number of bytes
that would be needed for writing the whole string. By using this value
for the following vnc_write() calls, we send some junk at the end of
the name in case the qemu_name is longer than 1017 bytes, which could
confuse the VNC clients. Fix this by adding an additional size check
here.
Buglink: https://bugs.launchpad.net/qemu/+bug/1637447
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1479749115-21932-1-git-send-email-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch fixes a segfault at QEMU startup, introduced in a08156321a.
gd_vc_find_current() return NULL, which is dereferenced without checking it.
While at it, disable the whole 'View' menu if no console exists.
Reproducer: qemu-system-i386 -M none -nodefaults
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1483263585-8101-1-git-send-email-hpoussin@reactos.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
- transport specific callbacks (for Xen)
- fix crash (2.8 regression)
- 9p functional tests
# gpg: Signature made Tue 03 Jan 2017 17:30:58 GMT
# gpg: using DSA key 0x02FC3AEB0101DBC2
# gpg: Good signature from "Greg Kurz <groug@kaod.org>"
# gpg: aka "Greg Kurz <groug@free.fr>"
# gpg: aka "Greg Kurz <gkurz@fr.ibm.com>"
# gpg: aka "Greg Kurz <gkurz@linux.vnet.ibm.com>"
# gpg: aka "Gregory Kurz (Groug) <groug@free.fr>"
# gpg: aka "Gregory Kurz (Cimai Technology) <gkurz@cimai.com>"
# gpg: aka "Gregory Kurz (Meiosys Technology) <gkurz@meiosys.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: 2BD4 3B44 535E C0A7 9894 DBA2 02FC 3AEB 0101 DBC2
* remotes/gkurz/tags/for-upstream:
tests: virtio-9p: ".." cannot be used to walk out of the shared directory
tests: virtio-9p: no slash in path elements during walk
tests: virtio-9p: add walk operation test
tests: virtio-9p: add attach operation test
tests: virtio-9p: add version operation test
9pfs: fix P9_NOTAG and P9_NOFID macros
tests: virtio-9p: code refactoring
tests: virtio-9p: rename PCI configuration test
9pfs: fix crash when fsdev is missing
9pfs: introduce init_out/in_iov_from_pdu
9pfs: call v9fs_init_qiov_from_pdu before v9fs_pack
9pfs: introduce transport specific callbacks
9pfs: move pdus to V9fsState
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch is based on the algorithm for the kvm.ko halt_poll_ns
parameter in Linux. The initial polling time is zero.
If the event loop is woken up within the maximum polling time it means
polling could be effective, so grow polling time.
If the event loop is woken up beyond the maximum polling time it means
polling is not effective, so shrink polling time.
If the event loop makes progress within the current polling time then
the sweet spot has been reached.
This algorithm adjusts the polling time so it can adapt to variations in
workloads. The goal is to reach the sweet spot while also recognizing
when polling would hurt more than help.
Two new trace events, poll_grow and poll_shrink, are added for observing
polling time adjustment.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20161201192652.9509-13-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The begin and end callbacks can be used to prepare for the polling loop
and clean up when polling stops. Note that they may only be called once
for multiple aio_poll() calls if polling continues to succeed. Once
polling fails the end callback is invoked before aio_poll() resumes file
descriptor monitoring.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20161201192652.9509-11-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The Linux AIO userspace ABI includes a ring that is shared with the
kernel. This allows userspace programs to process completions without
system calls.
Add an AioContext poll handler to check for completions in the ring.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20161201192652.9509-6-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The AioContext event loop uses ppoll(2) or epoll_wait(2) to monitor file
descriptors or until a timer expires. In cases like virtqueues, Linux
AIO, and ThreadPool it is technically possible to wait for events via
polling (i.e. continuously checking for events without blocking).
Polling can be faster than blocking syscalls because file descriptors,
the process scheduler, and system calls are bypassed.
The main disadvantage to polling is that it increases CPU utilization.
In classic polling configuration a full host CPU thread might run at
100% to respond to events as quickly as possible. This patch implements
a timeout so we fall back to blocking syscalls if polling detects no
activity. After the timeout no CPU cycles are wasted on polling until
the next event loop iteration.
The run_poll_handlers_begin() and run_poll_handlers_end() trace events
are added to aid performance analysis and troubleshooting. If you need
to know whether polling mode is being used, trace these events to find
out.
Note that the AioContext is now re-acquired before disabling notify_me
in the non-polling case. This makes the code cleaner since notify_me
was enabled outside the non-polling AioContext release region. This
change is correct since it's safe to keep notify_me enabled longer
(disabling is an optimization) but potentially causes unnecessary
event_notifer_set() calls. I think the chance of performance regression
is small here.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20161201192652.9509-4-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The new AioPollFn io_poll() argument to aio_set_fd_handler() and
aio_set_event_handler() is used in the next patch.
Keep this code change separate due to the number of files it touches.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20161201192652.9509-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
According to the 9P spec at http://man.cat-v.org/plan_9/5/intro, the
parent directory of the root directory of a server's tree is itself.
This test hence checks that the qid of the root directory as returned by
attach is the same as the qid of ".." when walking from the root directory.
Signed-off-by: Greg Kurz <groug@kaod.org>
The walk operation is used to traverse the directory tree and to associate
paths to fids. A single walk can be used to traverse up to P9_MAXWELEM path
elements at the same time.
The test creates a path with P9_MAXWELEM elements on the backend (à la
'mkdir -p') and issues a walk operation. The walk is expected to succeed
without error.
Reference:
http://man.cat-v.org/plan_9/5/walk
Signed-off-by: Greg Kurz <groug@kaod.org>
The attach operation is used to establish a connection between the
client and the server. After this, the client is able to access the
underlying filesystem and do I/O.
This test simply ensures the operation succeeds without error.
Reference:
http://man.cat-v.org/plan_9/5/attach
Signed-off-by: Greg Kurz <groug@kaod.org>
This patch lays the foundations to be able to test 9P operations and
provides a test for the version operation as a first example.
A 9P request is composed of a T-message sent by the client (guest) to the
server (QEMU), and a R-message sent by the server back to the client.
The following general calls are available to implement requests for any
9P operations:
v9fs_req_init(): allocates the request structure and the guest memory for
the T-message
v9fs_req_send(): allocates the guest memory for the R-message and sends the
T-message to QEMU
v9fs_req_recv(): waits for QEMU to answer and does some sanity checks on the
returned R-message header
v9fs_req_free(): releases the guest memory and the request structure
Helpers are provided, to be used by each specific 9P operation to copy data
to/from the guest memory.
The version operation is used to negotiate the 9P protocol version to be
used and the maximum buffer size for exchanged data. It is necessarily
the first message of a 9P session. For simplicity, the maximum buffer size
is hardcoded to 4k, which should be enough for functional tests.
The test simply advertises the "9P2000.L" version to QEMU and expects QEMU
to answer it is supported.
References:
http://man.cat-v.org/plan_9/5/introhttp://man.cat-v.org/plan_9/5/version
Signed-off-by: Greg Kurz <groug@kaod.org>
The u16 and u32 types don't exist in QEMU common headers. It never broke
build because these two macros aren't use by the current code, but this
is about to change with the future addition of functional tests for 9P.
Also, these should have enclosing parenthesis to be usable in any
syntactical situation.
As suggested by Eric Blake, let's use UINT16_MAX and UINT32_MAX to address
both issues.
Signed-off-by: Greg Kurz <groug@kaod.org>
This moves the test_share static and the QOSState into the QVirtIO9P
structure, and put PCI related code in functions with a _pci_ name.
This will avoid code duplication in future tests, and allow to add
support for non-PCI platforms.
Signed-off-by: Greg Kurz <groug@kaod.org>
If the user passes -device virtio-9p without the corresponding -fsdev, QEMU
dereferences a NULL pointer and crashes.
This is a 2.8 regression introduced by commit 702dbcc274.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Not all 9pfs transports share memory between request and response. For
those who don't, it is necessary to know how much memory is required in
the response.
Split the existing init_iov_from_pdu function in two:
init_out_iov_from_pdu (for writes) and init_in_iov_from_pdu (for reads).
init_in_iov_from_pdu takes an additional size parameter to specify the
memory required for the response message.
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
v9fs_xattr_read should not access VirtQueueElement elems directly.
Move v9fs_init_qiov_from_pdu up in the file and call
v9fs_init_qiov_from_pdu before v9fs_pack. Use v9fs_pack on the new
iovec.
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
Don't call virtio functions from 9pfs generic code, use generic function
callbacks instead.
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
pdus are initialized and used in 9pfs common code. Move the array from
V9fsVirtioState to V9fsState.
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
This is a cleanup patch. It adds call to tcg_temp_free()
when it is missing.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Implement CAS using cmpxchg.
Implement CAS2 using helper and either cmpxchg when
the 32bit addresses are consecutive, or with
parallel_cpus+cpu_loop_exit_atomic() otherwise.
Suggested-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Update helper to set the throwing location in case of div-by-0.
Cleanup divX.w and add quad word variants of divX.l.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twidle.net>
[laurent: modified to clear Z on overflow, as found with risu]
target-arm queue:
* add VBAR support to ARM1176 CPUs
* hw/i2c: add NULL check to i2c slave init callbacks
* pxa2xx.c: fix trailing whitespace
* aspeed: various cleanups
* aspeed: add romulus-bmc board
* virt: add 2.9 machine type
* gicv3: don't signal Pending+Active interrupts to CPU
* gicv3: fix incorrect usage of fieldoffset
* arm: log AArch64 exception returns
* gicv3: fix aff3 field in typer register
* aarch64: fix ldst_single_struct on BE hosts
* aarch64: fix vec_reg_offset on BE hosts
* arm: fix Cortex-A8 MVFR1 register value
* cadence_uart: check if receiver timeout counter disabled
* cadence_uart: check register values on migration
# gpg: Signature made Tue 27 Dec 2016 15:19:26 GMT
# gpg: using RSA key 0x3C2525ED14360CDE
# 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>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20161227: (25 commits)
target-arm: Add VBAR support to ARM1176 CPUs
hw/i2c: Add a NULL check for i2c slave init callbacks
hw/arm: remove trailing whitespace
aspeed/smc: set the number of flash modules for the FMC controller
aspeed/smc: improve segment register support
aspeed/scu: fix SCU region size
aspeed: change SoC revision of the palmetto-bmc machine
aspeed: add the definitions for the AST2400 A1 SoC
aspeed: add a memory region for SRAM
aspeed: add support for the romulus-bmc board
aspeed: extend the board configuration with flash models
aspeed: attach the second SPI controller object to the SoC
aspeed: remove cannot_destroy_with_object_finalize_yet
aspeed: QOMify the CPU object and attach it to the SoC
m25p80: add support for the mx66l1g45g
hw/arm/virt: add 2.9 machine type
hw/intc/arm_gicv3: Don't signal Pending+Active interrupts to CPU
hw/intc/arm_gicv3: Remove incorrect usage of fieldoffset
target-arm: Log AArch64 exception returns
hw/intc/arm_gicv3_common: fix aff3 in typer
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
ARM1176 CPUs have TrustZone support and can use the Vector Base
Address Register, but currently, qemu only adds VBAR support to ARMv7
CPUs. Fix this by adding a new feature ARM_FEATURE_VBAR which can used
for ARMv7 and ARM1176 CPUs.
The VBAR feature is always set for ARMv7 because some legacy boards
require it even if this is not architecturally correct.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1481810970-9692-1-git-send-email-clg@kaod.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The HW does not enforce all the rules in the specs and allows a few
"curious" setups like zero size segments and overlaps. So change the
model to be in sync but keep the warnings which are always interesting
for debug.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Message-id: 1480434248-27138-13-git-send-email-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The Romulus machine is an OpenPOWER system with an AST2500 SoC for
the BMC and a POWER9 chip for the host. It does not make much
difference for qemu a part from the fact that the FMC controller has
two SPI flash module.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Message-id: 1480434248-27138-8-git-send-email-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The GICv3 requires that we only signal Pending interrupts to
the CPU. This category does not include Pending+Active interrupts,
which means we need to check whether the interrupt is Active in
the gicr_int_pending() and gicd_int_pending() functions.
Interrupts are rarely in the Active+Pending state, but KVM
uses this as part of its handling of the virtual timer, so
this bug was causing KVM to go into an infinite loop of
taking the vtimer interrupt when the guest first triggered it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
In the ARMCPRegInfo definitions for the GICv3 CPU interface
registers, we were trying to use .fieldoffset to specify
the locations of data fields within the GICv3CPUState struct.
This is completely broken, because .fieldoffset is for offsets
into the CPUARMState struct. We didn't notice because we
were only using this for reads to BPR0, AP0R<n>, IGRPEN0
and CTLR_EL3, and Linux doesn't use these registers.
Replace the .fieldoffset uses with explicit read functions.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
We already log exception entry; add logging of the AArch64 exception
return path as well.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
The value of the MVFR1 (Media and VFP Feature Register 1) register for
the Cortex-A8 appears to be incorrect (according to the TRM, DDI0344K),
with the "full denormal arithmetic" and "propagation of NaN" fields
holding both 0 instead of both 1.
I had a go tracing the history of the use of this value, and it seems
it's always just been wrong in QEMU: maybe it was derived from early
documentation, or guessed based on the use of a "VFP Lite" implementation
in the Cortex-A8.
Depending on the startup/early-boot code in use, this can manifest as
failure to perform denormal arithmetic properly: in our case, selecting
a Cortex-A8 CPU when using QEMU as an instruction-set simulator for
bare-metal GCC testing caused tests using denormal arithmetic to
fail. Problems might be masked (or not occur) when using a full OS kernel
with suitable trap handlers (I'm not sure).
Signed-off-by: Julian Brown <julian@codesourcery.com>
Message-id: 1481130858-31767-1-git-send-email-julian@codesourcery.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When register Rcvr_timeout_reg0 (R_RTOR in cadence_uart.c) is set to
0, the receiver timeout counter should be disabled. See page 1801 of
"Zynq-7000 AP SoC Technical Reference Manual". This commit adds a
such a check before setting the receive timeout interrupt.
Signed-off-by: Andrew Gacek <andrew.gacek@gmail.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The Cadence UART device emulator calculates speed by dividing the
baud rate by a 'baud rate generator' & 'baud rate divider' value.
The device specification defines these register values to be
non-zero and within certain limits. Checks were recently added when
writing to these registers but not when restoring from migration.
This patch adds checks when restoring from migration to avoid divide by
zero errors.
Reported-by: Huawei PSIRT <psirt@huawei.com>
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 04ae30ed8ee1758cd2d2af880da4d28f74c67738.1481132150.git.alistair.francis@xilinx.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We can't use LOAD AND TEST for unsigned data and then expect to
extract the result with ADD LOGICAL WITH CARRY. Fall through to
using COMPARE LOGICAL IMMEDIATE instead.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Merge qcrypto 2016/12/21 v2
# gpg: Signature made Thu 22 Dec 2016 10:46:17 GMT
# gpg: using RSA key 0xBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg: aka "Daniel P. Berrange <berrange@redhat.com>"
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E 8E3F BE86 EBB4 1510 4FDF
* remotes/berrange/tags/pull-qcrypto-2016-12-21-2:
crypto: add HMAC algorithms testcases
crypto: support HMAC algorithms based on nettle
crypto: support HMAC algorithms based on glib
crypto: support HMAC algorithms based on libgcrypt
crypto: add HMAC algorithms framework
configure: add CONFIG_GCRYPT_HMAC item
crypto: add 3des-ede support when using libgcrypt/nettle
cipher: fix leak on initialization error
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The new paging more is extension of IA32e mode with more additional page
table level.
It brings support of 57-bit vitrual address space (128PB) and 52-bit
physical address space (4PB).
The structure of new page table level is identical to pml4.
The feature is enumerated with CPUID.(EAX=07H, ECX=0):ECX[bit 16].
CR4.LA57[bit 12] need to be set when pageing enables to activate 5-level
paging mode.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Message-Id: <20161215001305.146807-1-kirill.shutemov@linux.intel.com>
[Drop changes to target-i386/translate.c. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The syscall and sysret instructions behave a bit differently:
TF is checked after the instruction completes.
This allows the o/s to disable #DB at a syscall by adding TF to FMASK.
And then when the sysret is executed the #DB is taken "as if" the
syscall insn just completed.
Signed-off-by: Doug Evans <dje@google.com>
Message-Id: <94eb2c0bfa1c6a9fec0543057483@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Check for KVM_CAP_ADJUST_CLOCK capability KVM_CLOCK_TSC_STABLE, which
indicates that KVM_GET_CLOCK returns a value as seen by the guest at
that moment.
For new machine types, use this value rather than reading
from guest memory.
This reduces kvmclock difference on migration from 5s to 0.1s
(when max_downtime == 5s).
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Message-Id: <20161121105052.598267440@redhat.com>
[Add comment explaining what is going on. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When a scsi-disk object receives VERIFY command with BYTCHK bit being zero,
scsi_block_is_passthrough returns false and finally makes req being proceeded
by scsi_block_dma_command. Because scsi_block_dma_command has removed process
of VERIFY, QEMU will abort in this function.
Reported-by: Junlian Bell <zhongjun@sangfor.com.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The patch is to fix the confusing assert fail message caused by
un-initialized device structure (from bite sized tasks).
The bug can be reproduced by
./qemu-system-x86_64 -nographic -device cfi.pflash01
The CFI hardware is dynamically loaded by QOM realizing mechanism,
however the realizing function in pflash_cfi01_realize function
requires the device being initialized manually before calling, like
./qemu-system-x86_64 -nographic
-device cfi.pflash01,num-blocks=1024,sector-length=4096,name=testcard
Once the initializing parameters are left off in the command, it will
leave the device structure not initialized, which makes
pflash_cfi01_realize try to realize a zero-volume card, causing
/mnt/EXT_volume/projects/qemu/qemu-dev/exec.c:1378:
find_ram_offset: Assertion `size != 0\' failed.
Through my test, at least the flash device's block-number, sector-length
and its name is needed for pflash_cfi01_realize to behave correctly. So
I think the new asserts are needed to hint the QEMU user to specify
the device's parameters correctly.
Signed-off-by: Ziyue Yang <skiver.cloud.yzy@gmail.com>
Message-Id: <1481810693-13733-1-git-send-email-skiver.cloud.yzy@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ziyue Yang <yzylivezh@hotmail.com>
get_opt_value() truncates the value at the first comma
Use memcpy() instead so that -append works correctly in the
presence of commas. For -initrd to work right, instead,
unescape the module filename and parameters with get_opt_value()
before calling mb_add_cmdline().
Signed-off-by: Vlad Lungu <vlad.lungu@windriver.com>
Message-Id: <1481805124-16242-1-git-send-email-vlad.lungu@windriver.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The remote protocol can't handle flipping back and forth
between 32-bit and 64-bit regs. To compensate, pretend "as if"
on 64-bit cpu when in 32-bit mode.
Signed-off-by: Doug Evans <dje@google.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <001a113dca8274572005406e03c3@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This avoids taking the active_timers_lock or resetting/setting the
timers_done_ev if there are no active timers. This removes a small
(2-3%) source of overhead for dataplane. The list is then checked
again inside the lock, or a NULL pointer could be dereferenced.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
These will be used more as soon as the acquire/release is pushed down to
the ioeventfd handlers.
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Really rule chaining is not a particularly expensive task, since
GNU Make caches the directory listing. However it is easy to
avoid it for most files and for phony targets (one was missing).
After this patch, only "Makefile", "scripts/hxtool" and
"scripts/create_config" attempt to use chained rules.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Unnesting variables spends a lot of time parsing and executing foreach
and if functions. Because actually very few variables have to be
saved and restored, a good strategy is to remember what has to be done
in load-vars, and only iterate the right variables in load-vars.
For save-vars, unroll the foreach loop to provide another small
improvement.
This speeds up a "noop" build from around 15.5 seconds on my laptop
to 11.7 (25% roughly).
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When the Intel 6300ESB watchdog is hot unplug. The timer allocated
in realize isn't freed thus leaking memory leak. This patch avoid
this through adding the exit function.
Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Message-Id: <583cde9c.3223ed0a.7f0c2.886e@mx.google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Device models often have to perform multiple access to a single
memory region that is known in advance, but would to use "DMA-style"
functions instead of address_space_map/unmap. This can happen
for example when the data has to undergo endianness conversion.
Introduce a new data structure to cache the result of
address_space_translate without forcing usage of a host address
like address_space_map does.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This extracts the common part of address_space_map and
address_space_cache_init into a new function.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Templatize the address_space_* and *_phys functions, so that we can add
similar functions in the next patch that work with a lightweight,
cache-like version of address_space_map/unmap.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Do them right before the next patch generalizes them into a multi-included
file.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch add nettle-backed HMAC algorithms support
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This patch add glib-backed HMAC algorithms support
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This patch add HMAC algorithms based on libgcrypt support
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This patch introduce HMAC algorithms framework.
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This item will be used for support libcrypt-backed HMAC algorithms.
Support for hmac has been added in Libgcrypt 1.6.0, but we cannot
use pkg-config to get libcrypt's version. However we can make a
in configure to know whether current libcrypt support hmac.
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Libgcrypt and nettle support 3des-ede, so this patch add 3des-ede
support when using libgcrypt or nettle.
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
On error path, ctx may be leaked. Assign ctx earlier, and call
qcrypto_cipher_free() on error.
Spotted thanks to ASAN.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The blocksize option is defined in RFC 1783 and RFC 2348.
We now support block sizes between 1 and 1428 bytes, instead of 512 only.
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.
Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part]
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part]
Acked-by: Michael Walle <michael@walle.cc> [lm32 part]
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part]
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part]
Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part]
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part]
Acked-by: Richard Henderson <rth@twiddle.net> [alpha part]
Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part]
Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part]
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [crisµblaze part]
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part]
Signed-off-by: Thomas Huth <thuth@redhat.com>
This patch makes virtio-gpu track host memory allocations for ressources
and applies a limit (configurable 256M by default). When exceeding the
limit virtio-gpu throws VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY errors (like
it already does today when pixman image allocations fail).
This patch covers 2d mode only. For 3d mode we have to figure how we
are going to handle this best. qemu doesn't track resources in case
virglrenderer is used, so I guess we should extend virglrenderer to
allow setting a limit, then let qemu set the limit and catch
virgl_renderer_resource_create failures.
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: 李强 <liqiang6-s@360.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1480423356-22255-1-git-send-email-kraxel@redhat.com
Virtio GPU device while processing 'VIRTIO_GPU_CMD_GET_CAPSET'
command, retrieves the maximum capabilities size to fill in the
response object. It continues to fill in capabilities even if
retrieved 'max_size' is zero(0), thus resulting in OOB access.
Add check to avoid it.
Reported-by: Zhenhao Hong <zhenhaohong@gmail.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-id: 20161214070156.23368-1-ppandit@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch fixes a cross-version migration regression introduced
by commit d1b4259f ("virtio-bus: Plug devices after features are
negotiated").
The problem is encountered when host's vhost backend does not support
VIRTIO_F_VERSION_1, and migration is initiated from a v2.7 or prior
machine with virtio-pci modern capabilities enabled to a v2.8 machine.
In this case, modern capabilities get exposed to the guest by the source,
whereas the target will detect version 1 is not supported so will only
expose legacy capabilities.
The problem is fixed by introducing a new "x-ignore-backend-features"
property, which is set in v2.7 and prior compatibility modes. Doing this,
v2.7 machine keeps its broken behaviour (enabling modern while version
is not supported), and newer machines will behave correctly.
Reported-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Message-id: 20161214163035.3297-1-maxime.coquelin@redhat.com
Suggested-by: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The "Copy" menu item copies VTE terminal text to the clipboard. This
only works with VTE terminals, not with graphics consoles.
Disable the menu item when the current notebook page isn't a VTE
terminal.
This patch fixes a segfault. Reproducer: Start QEMU and click the Copy
menu item when the guest display is visible.
Reported-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20161214142518.10504-1-stefanha@redhat.com
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
We intentionally renamed 'debug-level' to 'debug' in the QMP
schema for 'blockdev-add' related to gluster, in order to
match the command line (commit 1a417e46). However, since
'debug-level' was visible in 2.7, that means that we should
document that 'debug' was not available until 2.8.
The change was intentional because 'blockdev-add' itself
underwent incompatible changes (such as commit 0153d2f) for
the same release; our intent is that after 2.8, these
interfaces will now be stable. [In hindsight, we should have
used the name x-blockdev-add when we first introduced it]
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 20161206182020.25736-1-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
A bug (1647683) was reported showing a crash when removing
breakpoints. The reproducer was bisected to 3359baad when tb_flush
was finally made thread safe. While in MTTCG the locking in
breakpoint_invalidate would have prevented any problems, but
currently tb_lock() is a NOP for system emulation.
The race is between a tb_flush from the gdbstub and the
tb_invalidate_phys_addr() in breakpoint_invalidate().
Ideally we'd have actual locking here; for the moment the
simple fix is to do a full tb_flush() for a bp invalidate,
since that is thread-safe even if no lock is taken.
Reported-by: Julian Brown <julian@codesourcery.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1481047629-7763-1-git-send-email-peter.maydell@linaro.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The qcow2_make_empty() function is reached during 'qemu-img commit',
in order to clear out ALL clusters of an image. However, if the
image cannot use the fast code path (true if the image is format
0.10, or if the image contains a snapshot), the cluster size is
larger than 512, and the image is larger than 2G in size, then our
choice of sector_step causes problems. Since it is not cluster
aligned, but qcow2_discard_clusters() silently ignores an unaligned
head or tail, we are leaving clusters allocated.
Enhance the testsuite to expose the flaw, and patch the problem by
ensuring our step size is aligned.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
# gpg: Signature made Tue 06 Dec 2016 02:24:23 AM GMT
# gpg: using RSA key 0xEF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>"
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211
* jasowang/tags/net-pull-request:
fsl_etsec: Fix various small problems in hexdump code
fsl_etsec: Pad short payloads with zeros
net: mcf: check receive buffer size register value
Message-id: 1480991552-14360-1-git-send-email-jasowang@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Fix various small problems in hexdump code, such as:
- Reference to non-existing field etsec->nic->nc.name is replaced
with nc->name
- Type mismatch warnings
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Document:
1. The new debug and logfile options with their usages
2. New json format and its usage and
3. update "GlusterFS, Device URL Syntax" section in "Invocation"
Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
The QMP definition of BlockdevOptionsNfs:
{ 'struct': 'BlockdevOptionsNfs',
'data': { 'server': 'NFSServer',
'path': 'str',
'*user': 'int',
'*group': 'int',
'*tcp-syn-count': 'int',
'*readahead-size': 'int',
'*page-cache-size': 'int',
'*debug-level': 'int' } }
To make this consistent with other block protocols like gluster, lets
change s/debug-level/debug/
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
The QMP definition of BlockdevOptionsGluster:
{ 'struct': 'BlockdevOptionsGluster',
'data': { 'volume': 'str',
'path': 'str',
'server': ['GlusterServer'],
'*debug-level': 'int',
'*logfile': 'str' } }
But instead of 'debug-level we have exported 'debug' as the option for choosing
debug level of gluster protocol driver.
This patch fix QMP definition BlockdevOptionsGluster
s/debug-level/debug/
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
While testing rth's latest TCG patches with risu I found ldaxp was
broken. Investigating further I found it was broken by 1dd089d0 when
the cmpxchg atomic work was merged. As part of that change the code
attempted to be clever by doing a single 64 bit load and then shuffle
the data around to set the two 32 bit registers.
As I couldn't quite follow the endian magic I've simply partially
reverted the change to the original code gen_load_exclusive code. This
doesn't affect the cmpxchg functionality as that is all done on in
gen_store_exclusive part which is untouched.
I've also restored the comment that was removed (with a slight tweak
to mention cmpxchg).
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Richard Henderson <rth@twiddle.net>
Message-id: 20161202173454.19179-1-alex.bennee@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The qobject_from_jsonf() function implements a pseudo-printf
language for creating a QObject; however, it is hard-coded to
only parse a subset of formats understood by -Wformat, and is
not a straight synonym to bare printf(). In particular, any
use of an int64_t integer works only if the system's
definition of PRId64 matches what the parser expects; which
works on glibc (%lld or %ld depending on 32- vs. 64-bit) and
mingw (%I64d), but not on Mac OS (%qd). Rather than enhance
the parser, it is just as easy to force the use of int (where
the value is small enough) or long long instead of int64_t,
which we know always works.
This should cover all remaining testsuite uses of
qobject_from_json[fv]() that were trying to rely on PRId64,
although my proof for that was done by adding in asserts and
checking that 'make check' still passed, where such asserts
are inappropriate during hard freeze. A later series in 2.9
may remove all dynamic JSON parsing, but that's a bigger task.
Reported by: G 3 <programmingkidx@gmail.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1479922617-4400-4-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Rename value64 to value_ll]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The qobject_from_jsonv() function implements a pseudo-printf
language for creating a QObject; however, it is hard-coded to
only parse a subset of formats understood by -Wformat, and is
not a straight synonym to bare printf(). In particular, any
use of an int64_t integer works only if the system's
definition of PRId64 matches what the parser expects; which
works on glibc (%lld or %ld depending on 32- vs. 64-bit) and
mingw (%I64d), but not on Mac OS (%qd). Rather than enhance
the parser, it is just as easy to use normal printf() for
this particular conversion, matching what is done elsewhere
in this file [1], which is safe in this instance because the
format does not contain any of the problematic differences
(bare '%' or the '%s' format).
The use of PRId64 for a variable named 'pid' is gross, but it
is a sad reality of the 64-bit mingw environment, which
mistakenly defines pid_t as a 64-bit type even though getpid()
returns 'int' on that platform [2]. Our definition of the
QGA GuestExec type defines 'pid' as a 64-bit entity, and we
can't tighten it to 'int32' unless the mingw header is fixed.
Using 'long long' instead of 'int64_t' just so that we can
stick with qobject_from_jsonv("%lld") instead of printf() is
not any prettier, since we may have later type churn anyways.
[1] see 'git grep -A2 strdup_printf tests/test-qga.c'
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1397787
Reported by: G 3 <programmingkidx@gmail.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1479922617-4400-3-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The qobject_from_jsonf() function implements a pseudo-printf
language for creating a QObject; however, it is hard-coded to
only parse a subset of formats understood by -Wformat, and is
not a straight synonym to bare printf(). In particular, any
use of an int64_t integer works only if the system's
definition of PRId64 matches what the parser expects; which
works on glibc (%lld or %ld depending on 32- vs. 64-bit) and
mingw (%I64d), but not on Mac OS (%qd). Rather than enhance
the parser, it is just as easy to use 'long long', which we
know always works. There are few enough callers of
qobject_from_json[fv]() that it is easy to audit that this is
the only non-testsuite caller that was actually relying on
this particular conversion.
Reported by: G 3 <programmingkidx@gmail.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1479922617-4400-2-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Cast tv.tv_sec, tv.tv_usec to long long for type correctness]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
In Cirrus CLGD 54xx VGA Emulator, if cirrus graphics mode is VGA,
'cirrus_get_bpp' returns zero(0), which could lead to a divide
by zero error in while copying pixel data. The same could occur
via blit pitch values. Add check to avoid it.
Reported-by: Huawei PSIRT <psirt@huawei.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-id: 1476776717-24807-1-git-send-email-ppandit@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Depending on QEMU network setup it is possible for us to receive a
complete Ethernet packet that is less 64 bytes long. One such example is
when QEMU is configured to use a standalone TAP device (not set to be a
part of any bridge) receives and ARP packet. In cases like that we need
to add more than just 4-bytes of CRC padding and ensure that our payload
is at least 60 bytes long, such that, when combined with CRC padding
bytes the resulting size is at least 802.3 minimum MTU bytes
long (64). Failing to do that results in code in etsec_walk_rx_ring()
setting BD_RX_SH which, in turn, makes corresponding Linux driver of
emulated host to reject buffer as a runt packet
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
ColdFire Fast Ethernet Controller uses a receive buffer size
register(EMRBR) to hold maximum size of all receive buffers.
It is set by a user before any operation. If it was set to be
zero, ColdFire emulator would go into an infinite loop while
receiving data in mcf_fec_receive. Add check to avoid it.
Reported-by: Wjjzhang <wjjzhang@tencent.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
In update_cursor_data_virgl function, if the 'width'/ 'height'
is not equal to current cursor's width/height it will return
without free the 'data' allocated previously. This will lead
a memory leak issue. This patch fix this issue.
Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Message-id: 58187760.41d71c0a.cca75.4cb9@mx.google.com
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
In virgl_cmd_get_capset_info dispatch function, the 'resp' hasn't
been full initialized before writing to the guest. This will leak
the 'resp.padding' and 'resp.hdr.padding' fieds to the guest. This
patch fix this issue.
Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Message-id: 5818661e.0860240a.77264.7a56@mx.google.com
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Currently if the client keeps sending the same monitor config to
QEMU/spice-server, QEMU will always raise
a QXL_INTERRUPT_CLIENT_MONITORS_CONFIG regardless of whether there was a
change or not.
Guest-side (with fedora 25), the kernel QXL KMS driver will also forward the
event to user-space without checking if there were actual changes.
Next in line are gnome-shell/mutter (on a default f25 install), which
will try to reconfigure everything without checking if there is anything
to do.
Where this gets ugly is that when applying the resolution changes,
gnome-shell/mutter will call drmModeRmFB, drmModeAddFB, and
drmModeSetCrtc, which will cause the primary surface to be destroyed and
recreated by the QXL KMS driver. This in turn will cause the client to
resend a client monitors config message, which will cause QEMU to reemit
an interrupt with an unchanged monitors configuration, ...
This causes https://bugzilla.redhat.com/show_bug.cgi?id=1266484
This commit makes sure that we only emit
QXL_INTERRUPT_CLIENT_MONITORS_CONFIG when there are actual configuration
changes the guest should act on.
Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Message-id: 20161028144840.18326-1-cfergeau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Needed to emit FPU exception on Loongson multimedia instructions
executing if Status:CU1 is clear. or FPR changes may be missed
on Linux.
Signed-off-by: Heiher <wangr@lemote.com>
Signed-off-by: Fuxin Zhang <zhangfx@lemote.com>
Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
ppc patch queue 2016-12-01
Just a single migration / hotplug fix in this set. I believe it's
important enough to go in this late in the 2.8 release process.
# gpg: Signature made Thu 01 Dec 2016 04:43:49 AM GMT
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* dgibson/tags/ppc-for-2.8-20161201:
spapr: fix default DRC state for coldplugged LMBs
Message-id: 20161201044441.14365-1-david@gibson.dropbear.id.au
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Currently we set the initial isolation/allocation state for DRCs
associated with coldplugged LMBs to ISOLATED/UNUSABLE,
respectively, under the assumption that the guest will move this
state to UNISOLATED/USABLE.
In fact, this is only the case for LMBs added via hotplug. For
coldplugged LMBs, the guest actually assumes the initial state to
be UNISOLATED/USABLE.
In practice, this only becomes an issue when we attempt to unplug
one of these LMBs, where the guest kernel will issue an
rtas-get-sensor-state call to check that the corresponding DRC is
in an USABLE state before it will release the LMB back to
QEMU. If the returned state is otherwise, the guest will assume no
further action is needed, which bypasses the QEMU-side cleanup that
occurs during the USABLE->UNUSABLE transition. This results in
LMBs and their corresponding pc-dimm devices to stick around
indefinitely.
This patch fixes the issue by manually setting DRCs associated with
cold-plugged LMBs to UNISOLATED/ALLOCATED, but leaving the hotplug
state untouched. As it turns out, this is analogous to the handling
for cold-plugged CPUs in spapr_core_plug().
Cc: qemu-ppc@nongnu.org
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Though crypto_cfg.reserve is an unused field, let me
initialize the structure in order to make coverity happy.
*** CID 1365923: Uninitialized variables (UNINIT)
/hw/virtio/virtio-crypto.c: 851 in virtio_crypto_get_config()
845 stl_le_p(&crypto_cfg.mac_algo_h, c->conf.mac_algo_h);
846 stl_le_p(&crypto_cfg.aead_algo, c->conf.aead_algo);
847 stl_le_p(&crypto_cfg.max_cipher_key_len, c->conf.max_cipher_key_len);
848 stl_le_p(&crypto_cfg.max_auth_key_len, c->conf.max_auth_key_len);
849 stq_le_p(&crypto_cfg.max_size, c->conf.max_size);
850
>>> CID 1365923: Uninitialized variables (UNINIT)
>>> Using uninitialized value "crypto_cfg". Field "crypto_cfg.reserve"
is uninitialized when calling "memcpy".
[Note: The source code implementation of the function
has been overridden by a builtin model.]
851 memcpy(config, &crypto_cfg, c->config_size);
852 }
853
Rported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
According to ISO C99 / N1256 (referenced in HACKING):
> 6.5.8 Relational operators
>
> 4 For the purposes of these operators, a pointer to an object that is
> not an element of an array behaves the same as a pointer to the first
> element of an array of length one with the type of the object as its
> element type.
>
> 5 When two pointers are compared, the result depends on the relative
> locations in the address space of the objects pointed to. If two
> pointers to object or incomplete types both point to the same object,
> or both point one past the last element of the same array object, they
> compare equal. If the objects pointed to are members of the same
> aggregate object, pointers to structure members declared later compare
> greater than pointers to members declared earlier in the structure,
> and pointers to array elements with larger subscript values compare
> greater than pointers to elements of the same array with lower
> subscript values. All pointers to members of the same union object
> compare equal. If the expression /P/ points to an element of an array
> object and the expression /Q/ points to the last element of the same
> array object, the pointer expression /Q+1/ compares greater than /P/.
> In all other cases, the behavior is undefined.
Our AddressSpace objects are allocated generally individually, and kept in
the "address_spaces" linked list, so we mustn't compare their addresses
with relops.
Convert the pointers subjected to the relop in rom_order_compare() to
"uintptr_t":
> 7.18.1.4 Integer types capable of holding object pointers
>
> 1 [...]
>
> The following type designates an unsigned integer type with the
> property that any valid pointer to void can be converted to this type,
> then converted back to pointer to void, and the result will compare
> equal to the original pointer:
>
> /uintptr_t/
>
> These types are optional.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alistair Francis <alistair.francis@xilinx.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-devel@nongnu.org
Fixes: 3e76099aac
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* Commit 3e76099aac ("loader: Allow a custom AddressSpace when loading
ROMs") introduced the "Rom.as" field:
(1) It modified the utility callers of rom_insert() to take "as" as a
new parameter from *their* callers, and set "rom->as" from that
parameter. The functions covered were rom_add_file() and
rom_add_elf_program().
(2) It also modified rom_insert() itself, to auto-assign
"&address_space_memory", in case the external caller passed -- and
the utility caller forwarded -- as=NULL.
Except, commit 3e76099aac forgot to update the third utility caller of
rom_insert(), under point (1), namely rom_add_blob().
* Later, commit 5e774eb3bd ("loader: Add AddressSpace loading support
to uImages") added the load_uimage_as() function, and the
rom_add_blob_fixed_as() function-like macro, with the necessary changes
elsewhere to propagate the new "as" parameter to rom_add_blob():
load_uimage_as()
load_uboot_image()
rom_add_blob_fixed_as()
rom_add_blob()
At this point, the signature (and workings) of rom_add_blob() had been
broken already, and the rom_add_blob_fixed_as() macro passed its "_as"
parameter to rom_add_blob() as "callback_opaque". Given that the
"fw_callback" parameter itself was set to NULL (correctly), this did no
additional damage (the opaque arg would never be used), but ultimately
it broke the new functionality of load_uimage_as().
* The load_uimage_as() function would be put to use in one of the later
patches, commit e481a1f63c ("generic-loader: Add a generic loader").
* We can fix this only in a unified patch now. Append "AddressSpace *as"
to the signature of rom_add_blob(), and handle the new parameter. Pass
NULL from all current callers, except from rom_add_blob_fixed_as(),
where "_as" has to be bumped to the proper position.
* Note that rom_add_file() rejects the case when both "mr" and "as" are
passed in as non-NULL. The action that this is apparently supposed to
prevent is the
rom->mr = mr;
assignment (that's the only place where the "mr" parameter is used in
rom_add_file()). In rom_add_blob() though, we have no "mr" parameter,
and the actions done on the fw_cfg branch:
if (fw_file_name && fw_cfg) {
if (mc->rom_file_has_mr) {
data = rom_set_mr(rom, OBJECT(fw_cfg), devpath);
mr = rom->mr;
} else {
data = rom->data;
}
reflect those that are performed by rom_add_file() too (with mr==NULL):
if (rom->fw_file && fw_cfg) {
if ((!option_rom || mc->option_rom_has_mr) &&
mc->rom_file_has_mr) {
data = rom_set_mr(rom, OBJECT(fw_cfg), devpath);
} else {
data = rom->data;
}
Hence we need no additional restrictions in rom_add_blob().
* Stable is not affected as both problematic commits appeared first in
v2.8.0-rc0.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alistair Francis <alistair.francis@xilinx.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Michael Walle <michael@walle.cc>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Shannon Zhao <zhaoshenglong@huawei.com>
Cc: qemu-arm@nongnu.org
Cc: qemu-devel@nongnu.org
Fixes: 3e76099aac
Fixes: 5e774eb3bd
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
"mask" needs to be inverted before use.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Block layer patches for 2.8.0-rc2
# gpg: Signature made Tue 29 Nov 2016 03:16:10 PM GMT
# gpg: using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* kwolf/tags/for-upstream:
docs: Specify that cache-clean-interval is only supported in Linux
qcow2: Remove stale comment
qcow2: Allow 'cache-clean-interval' in Linux only
qcow2: Make qcow2_cache_table_release() work only in Linux
Message-id: 1480436227-2211-1-git-send-email-kwolf@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Building qemu fails in distributions where gcc enables PIE by default
(e.g. Debian unstable) with:
/usr/bin/ld: -r and -pie may not be used together
You have to use -r instead of -Wl,-r to avoid gcc passing -pie to the linker
when PIE is enabled and a relocatable object is passed. However, clang
does not know about -r, so try -Wl,-r first.
[This is a fix for commit c96f0ee6a6
("rules.mak: Use -r instead of -Wl, -r to fix building when PIE is
default") which mostly worked but broke the ./configure --enable-modules
build with clang.
--Stefan]
Reported-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20161129153720.29747-1-pbonzini@redhat.com
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Small fixes for rc2.
# gpg: Signature made Mon 28 Nov 2016 03:45:20 PM GMT
# gpg: using RSA key 0xBFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# 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
* bonzini/tags/for-upstream:
rules.mak: Use -r instead of -Wl, -r to fix building when PIE is default
migration/pcspk: Turn migration of pcspk off for 2.7 and older
migration/pcspk: Add a property to state if pcspk is migrated
pci-assign: sync MSI/MSI-X cap and table with PCIDevice
megasas: clean up and fix request completion/cancellation
megasas: do not call pci_dma_unmap after having freed the frame once
Message-id: 1480372837-109736-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
An hbitmap's granularity may be anything from 0 to 63, so when shifting
constants by its value, they should not be plain ints.
Even having changed the types, hbitmap_serialization_granularity() still
tries to shift 64 to the right by the granularity. This operation is
undefined if the granularity is greater than 57. Adding an assertion is
fine for now, because serializing is done only in tests so far, but this
means that only bitmaps with a granularity below 58 can be serialized
and we should thus add a hbitmap_is_serializable() function later.
One of the two places touched in this patch uses
QEMU_ALIGN_UP(x, 1 << y). We can use ROUND_UP() there, since the second
parameter is obviously a power of two.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20161115224732.1334-1-mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
target-arm queue:
* hw/arm/boot: fix crash handling device trees with no /chosen
or /memory nodes
* generic-loader: only set PC if a CPU is specified
# gpg: Signature made Mon 28 Nov 2016 01:47:21 PM GMT
# gpg: using RSA key 0x3C2525ED14360CDE
# 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>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* pm215/tags/pull-target-arm-20161128:
arm: Create /chosen and /memory devicetree nodes if necessary
generic-loader: file: Only set a PC if a CPU is specified
Message-id: 1480341071-5367-1-git-send-email-peter.maydell@linaro.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
There's no way to communicate back read data, so only writes can ever
be usefully specified. Ignore the field, paving the road for eventually
re-using the bit for something else in a few (many?) years time.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
There's no point setting fields always receiving the same value on each
iteration, as handle_ioreq() doesn't alter them anyway. Set state and
count once ahead of the loop, drop the redundant clearing of
data_is_ptr, and avoid the meaningless (because count is 1) setting of
df altogether.
Also avoid doing an unsigned long calculation of size when the field to
be initialized is only 32 bits wide (and the shift value in the range
0...3).
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
We should not consume the second slot if it didn't get written yet.
Normal writers - i.e. Xen - would not update write_pointer between the
two writes, but the page may get fiddled with by the guest itself, and
we're better off avoiding to enter an infinite loop in that case.
Reported-by: yanghongke <yanghongke@huawei.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Building qemu fails in distributions where gcc enables PIE by default
(e.g. Debian unstable) with:
/usr/bin/ld: -r and -pie may not be used together
Use -r instead of -Wl,-r to avoid gcc passing -pie to the linker
when PIE is enabled and a relocatable object is passed.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Message-Id: <20161127162817.15144-1-bunk@stusta.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Since commit e1d4fb2d ("kvm-irqchip: x86: add msi route notify fn"),
kvm_irqchip_add_msi_route() starts to use pci_get_msi_message() to fetch
MSI info. This requires that we setup MSI related fields in PCIDevice.
For most devices, that won't be a problem, as long as we are using
general interfaces like msi_init()/msix_init().
However, for pci-assign devices, MSI/MSI-X is treated differently - PCI
assign devices are maintaining its own MSI table and cap information in
AssignedDevice struct. however that's not synced up with PCIDevice's
fields. That will leads to pci_get_msi_message() failed to find correct
MSI capability, even with an NULL msix_table.
A quick fix is to sync up the two places: both the capability bits and
table address for MSI/MSI-X.
Reported-by: Changlimin <changlimin@h3c.com>
Tested-by: Changlimin <changlimin@h3c.com>
Cc: qemu-stable@nongnu.org
Fixes: e1d4fb2d ("kvm-irqchip: x86: add msi route notify fn")
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1480042522-16551-1-git-send-email-peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
megasas_command_cancel is a callback; it should report the abort in
the frame, not try another abort! Compare for instance with
mptsas_request_cancelled.
So extract the common bits for request completion in a new function
megasas_complete_command, call it from both the .complete and .cancel
callbacks, and remove duplicate pieces from the DCMD path.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20161110152751.4267-2-pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Commit 8cc4678 ("megasas: remove useless check for cmd->frame", 2016-07-17) was
wrong because I trusted Coverity too much. It turns out that there _is_ a
path through which cmd->frame can become NULL. After megasas_handle_frame's
switch (md->frame->header.frame_cmd), megasas_init_firmware can be called.
From there, megasas_reset_frames will call megasas_unmap_frame which resets
cmd->frame = NULL.
However, there is another bug to fix in there, because megasas_unmap_frame
is called again after setting the command status. In this case QEMU should
not do anything, instead it calls pci_dma_unmap again. Harmless, but
better fix it.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Make it clear that having Linux is a hard requirement for this
feature.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The cache-clean-interval option of qcow2 only works on Linux. However
we allow setting it in other systems regardless of whether it works or
not.
In those systems this option is not simply a no-op: it actually
invalidates perfectly valid cache tables for no good reason without
freeing their memory.
This patch forbids using that option in non-Linux systems.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
We are using QEMU_MADV_DONTNEED to discard the memory of individual L2
cache tables. The problem with this is that those semantics are
specific to the Linux madvise() system call. Other implementations of
madvise() (including the very Linux implementation of posix_madvise())
don't do that, so we cannot use them for the same purpose.
This patch makes the code Linux-specific and uses madvise() directly
since there's no point in going through qemu_madvise() for this.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
"The multiplier and multiplicand are both word operands, and the result
is a long-word operand."
So compute flags on a long-word result, not on a word result.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This pull request fixes some leaks (memory, fd) in the handle and proxy
backends.
# gpg: Signature made Wed 23 Nov 2016 12:53:41 PM GMT
# gpg: using DSA key 0x02FC3AEB0101DBC2
# gpg: Good signature from "Greg Kurz <groug@kaod.org>"
# gpg: aka "Greg Kurz <groug@free.fr>"
# gpg: aka "Greg Kurz <gkurz@fr.ibm.com>"
# gpg: aka "Greg Kurz <gkurz@linux.vnet.ibm.com>"
# gpg: aka "Gregory Kurz (Groug) <groug@free.fr>"
# gpg: aka "Gregory Kurz (Cimai Technology) <gkurz@cimai.com>"
# gpg: aka "Gregory Kurz (Meiosys Technology) <gkurz@meiosys.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: 2BD4 3B44 535E C0A7 9894 DBA2 02FC 3AEB 0101 DBC2
* gkurz/tags/for-upstream:
9pfs: add cleanup operation for proxy backend driver
9pfs: add cleanup operation for handle backend driver
9pfs: add cleanup operation in FileOperations
9pfs: adjust the order of resource cleanup in device unrealize
Message-id: 1479920298-24983-1-git-send-email-groug@kaod.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
"The size of the operation can be specified as word or long.
Word length source operands are sign-extended to 32 bits for
comparison."
So comparison is always done using OS_LONG.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
opcodes of "EXG Ax,Ay" and "EXG Dx,Dy" have been swapped
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
The guest sends discard requests as u64 sector/count pairs, but the
block layer operates internally with s64/s32 pairs. The conversion
leads to IO errors in the guest, the discard request is not processed.
domU.cfg:
'vdev=xvda, format=qcow2, backendtype=qdisk, target=/x.qcow2'
domU:
mkfs.ext4 -F /dev/xvda
Discarding device blocks: failed - Input/output error
Fix this by splitting the request into chunks of BDRV_REQUEST_MAX_SECTORS.
Add input range checking to avoid overflow.
Fixes f313520 ("xen_disk: add discard support")
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
In the init operation of proxy backend dirver, it allocates a
V9fsProxy struct and some other resources. We should free these
resources when the 9pfs device is unrealized. This is what this
patch does.
Signed-off-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
In the init operation of handle backend dirver, it allocates a
handle_data struct and opens a mount file. We should free these
resources when the 9pfs device is unrealized. This is what this
patch does.
Signed-off-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
Currently, the backend of VirtFS doesn't have a cleanup
function. This will lead resource leak issues if the backed
driver allocates resources. This patch addresses this issue.
Signed-off-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
Unrealize should undo things that were set during realize in
reverse order. So should do in the error path in realize.
Signed-off-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
ppc patch queue 2016-11-23
Here's the first set of 2.8 hard freeze bugfixes for ppc.
The biggest thing here is a batch of fixes for migration breakages in
both 2.7 and current 2.8. Alas, there is at least one more migration
problem, which prevents memory unplug after a migration. I hoped to
include a fix for that here, but it turned out to have some problems
bigger than those it was solving. So, I expect at least one more hard
freeze pull request.
There are also a few other assorted bug fixes.
# gpg: Signature made Wed 23 Nov 2016 02:25:42 AM GMT
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* dgibson/tags/ppc-for-2.8-20161123:
spapr: Fix 2.7<->2.8 migration of PCI host bridge
Revert "spapr: Fix migration of PCI host bridges from qemu-2.7"
target-ppc: Allow eventual removal of old migration mistakes
migration: Add VMSTATE_UINTTL_TEST()
target-ppc: Fix CPU migration from qemu-2.6 <-> later versions
ppc: Make uninorth interrupt swizzling identical to Grackle
target-ppc: fix index array of national digits
hw/char/spapr_vty: Return amount of free buffer entries in vty_can_receive()
ppc: BOOK3E: nothing should be done when MSR:PR is set
spapr: migration support for CAS-negotiated option vectors
tests/postcopy: Use KVM on ppc64 only if it is KVM-HV
Message-id: 1479869383-16162-1-git-send-email-david@gibson.dropbear.id.au
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
daa2369 "spapr_pci: Add a 64-bit MMIO window" subtly broke migration
from qemu-2.7 to the current version. It split the device's MMIO
window into two pieces for 32-bit and 64-bit MMIO.
The patch included backwards compatibility code to convert the old
property into the new format. However, the property value was also
transferred in the migration stream and compared with a (probably
unwise) VMSTATE_EQUAL. So, the "raw" value from 2.7 is compared to
the new style converted value from (pre-)2.8 giving a mismatch and
migration failure.
Along with the actual field that caused the breakage, there are
several other ill-advised VMSTATE_EQUAL()s. To fix forwards
migration, we read the values in the stream into scratch variables and
ignore them, instead of comparing for equality. To fix backwards
migration, we populate those scratch variables in pre_save() with
adjusted values to match the old behaviour.
To permit the eventual possibility of removing this cruft from the
stream, we only include these compatibility fields if a new
'pre-2.8-migration' property is set. We clear it on the pseries-2.8
machine type, which obviously can't be migrated backwards, but set it
on earlier machine type versions.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
This reverts commit 9b54ca0ba7.
The commit above corrected a migration breakage between qemu-2.7 and
qemu-2.8. However it did so by advancing the migration version for
the PCI host bridge, which obviously breaks migration backwards to
earlier qemu versions.
Although it's not totally essential, we'd like to maintain the
possibility for backwards migration, so revert the change in
preparation for a better fix.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Until very recently, the vmstate for ppc cpus included some poorly
thought out VMSTATE_EQUAL() components, that can easily break
migration compatibility, and did so between qemu-2.6 and later
versions. A hack was recently added which fixes this migration
breakage, but it leaves the unhelpful cruft of these fields in the
migration stream.
This patch adds a new cpu property allowing these fields to be removed
from the stream entirely. For the pseries-2.8 machine type - which
comes after the fix - and for all non-pseries machine types - which
aren't mature enough to care about cross-version migration - we remove
the fields from the stream.
For pseries-2.7 and earlier, The migration hack remains in place,
allowing backwards and forwards migration with the older machine
types.
This restricts the migration compatibility cruft to older machine
types, and at least opens the possibility of eventually deprecating
and removing it entirely.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
include/migration/cpu.h defines VMSTATE_UINTTL() and several variants
for migrating target_ulong fields. It's defined in terms of
VMSTATE_UINT32() or VMSTATE_UINT64() as appropriate.
It doesn't, however, include a VMSTATE_UINTTL_TEST() variant, which
I'm going to need shortly. So, add it.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
When migration for target-ppc was converted to vmstate, several
VMSTATE_EQUAL() checks were foolishly included of things that really
should be internal state. Specifically we verified equality of the
insns_flags and insns_flags2 fields, which are used within TCG to
determine which groups of instructions are available on this cpu
model. Between qemu-2.6 and qemu-2.7 we made some changes to these
classes which broke migration.
This path fixes migration both forwards and backwards. On migration
from 2.6 to later versions we import the fields into teporary
variables, which we then ignore. In migration backwards, we populate
the temporary fields from the runtime fields, but mask out the bits
which were added after qemu-2.6, allowing the VMSTATE_EQUAL in
qemu-2.6 to accept the stream.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
It's currently broken as it uses an incorrect shift, it tries
to use the slot number but uses the top bits of the bus number
instead.
Note: Neither implementation matches what OpenBIOS ends up putting
in the device-tree either, which will have to be fixed separately.
This is not quite correct for modelling a real Mac since Apple
tend to tie all 4 interrupt lines of a slot together and have
separate interrupts for every slot and every motherboard devices
going straight to the PIC but we'll sort that out later.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The can_receive() callbacks of the character devices should return
the amount of characters that can be accepted at once, not just a
boolean value (which rather means only one character at a time).
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The server architecture (BOOK3S) specifies that any instruction that
sets MSR:PR will also set MSR:EE, IR and DR.
However there is no such behavior specification for the embedded
architecture (BOOK3E).
Signed-off-by: Vladimir Svoboda <ze.vlad@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
With the additional of the OV5_HP_EVT option vector, we now have
certain functionality (namely, memory unplug) that checks at run-time
for whether or not the guest negotiated the option via CAS. Because
we don't currently migrate these negotiated values, we are unable
to unplug memory from a guest after it's been migrated until after
the guest is rebooted and CAS-negotiation is repeated.
This patch fixes this by adding CAS-negotiated options to the
migration stream. We do this using a subsection, since the
negotiated value of OV5_HP_EVT is the only option currently needed
to maintain proper functionality for a running guest.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The ppc64 postcopy test does not work with KVM-PR, and it is also
causing annoying warning messages when run on a x86 host. So let's
use KVM here only if we know that we're running with KVM-HV (which
automatically also means that we're running on a ppc64 host), and
fall back to TCG otherwise.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Commit fa778fff wired up support to send the NBD_CMD_WRITE_ZEROES,
but forgot to inform the block layer that FUA unmapping of zeroes is
supported. Without BDRV_REQ_MAY_UNMAP listed as a supported flag,
the block layer will always insist on the NBD layer passing
NBD_CMD_FLAG_NO_HOLE, resulting in the server always allocating
things even when it was desired to let the server punch holes.
Similarly, failing to set BDRV_REQ_FUA means that the client may
send unnecessary NBD_CMD_FLUSH when it could have instead used the
NBD_CMD_FLAG_FUA bit.
CC: qemu-stable@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1479413642-22463-2-git-send-email-eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In the user emulation code path, tlb_vaddr_to_host erronesously passed
vaddr as the guest address to be translated, instead of addr, the parameter
which actually contained the guest address.
This resulted in incorrect addresses being used when emulating block copy
(mvc/mvpg) and block clear (xc) instructions for the s390x target.
Signed-off-by: Bobby Bingham <koorogi@koorogi.info>
Message-Id: <20161113050523.23909-1-koorogi@koorogi.info>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Block layer patches for 2.8.0-rc1
# gpg: Signature made Tue 22 Nov 2016 03:55:38 PM GMT
# gpg: using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* kwolf/tags/for-upstream:
block: Pass unaligned discard requests to drivers
block: Return -ENOTSUP rather than assert on unaligned discards
block: Let write zeroes fallback work even with small max_transfer
qcow2: Inform block layer about discard boundaries
Message-id: 1479830693-26676-1-git-send-email-kwolf@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Attach the usb bus of a new pvusb controller to the qdev associated
with the Xen backend. Any device connected to that controller can now
specify the bus and port directly via its properties.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Create a qdev plugged to the xen-sysbus for each new backend device.
This device can be used as a parent for all needed devices of that
backend. The id of the new device will be "xen-<type>-<dev>" with
<type> being the xen backend type (e.g. "qdisk") and <dev> the xen
backend number of the type under which it is to be found in xenstore.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
In order to have an easy way to add a new qdev with a specific id
carve out the needed functionality from qdev_device_add() into a new
function qdev_set_id().
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Add a bus for Xen backend devices in order to be able to establish a
dedicated device path for pluggable devices.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
A typo prevents ISA interrupts from being recognized on cpu0,
which is where the smp kernel normally wants to see them.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Discard is advisory, so rounding the requests to alignment
boundaries is never semantically wrong from the data that
the guest sees. But at least the Dell Equallogic iSCSI SANs
has an interesting property that its advertised discard
alignment is 15M, yet documents that discarding a sequence
of 1M slices will eventually result in the 15M page being
marked as discarded, and it is possible to observe which
pages have been discarded.
Between commits 9f1963b and b8d0a980, we converted the block
layer to a byte-based interface that ultimately ignores any
unaligned head or tail based on the driver's advertised
discard granularity, which means that qemu 2.7 refuses to
pass any discard request smaller than 15M down to the Dell
Equallogic hardware. This is a slight regression in behavior
compared to earlier qemu, where a guest executing discards
in power-of-2 chunks used to be able to get every page
discarded, but is now left with various pages still allocated
because the guest requests did not align with the hardware's
15M pages.
Since the SCSI specification says nothing about a minimum
discard granularity, and only documents the preferred
alignment, it is best if the block layer gives the driver
every bit of information about discard requests, rather than
rounding it to alignment boundaries early.
Rework the block layer discard algorithm to mirror the write
zero algorithm: always peel off any unaligned head or tail
and manage that in isolation, then do the bulk of the request
on an aligned boundary. The fallback when the driver returns
-ENOTSUP for an unaligned request is to silently ignore that
portion of the discard request; but for devices that can pass
the partial request all the way down to hardware, this can
result in the hardware coalescing requests and discarding
aligned pages after all.
Reported by: Peter Lieven <pl@kamp.de>
CC: qemu-stable@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Right now, the block layer rounds discard requests, so that
individual drivers are able to assert that discard requests
will never be unaligned. But there are some ISCSI devices
that track and coalesce multiple unaligned requests, turning it
into an actual discard if the requests eventually cover an
entire page, which implies that it is better to always pass
discard requests as low down the stack as possible.
In isolation, this patch has no semantic effect, since the
block layer currently never passes an unaligned request through.
But the block layer already has code that silently ignores
drivers that return -ENOTSUP for a discard request that cannot
be honored (as well as drivers that return 0 even when nothing
was done). But the next patch will update the block layer to
fragment discard requests, so that clients are guaranteed that
they are either dealing with an unaligned head or tail, or an
aligned core, making it similar to the block layer semantics of
write zero fragmentation.
CC: qemu-stable@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Commit 443668ca rewrote the write_zeroes logic to guarantee that
an unaligned request never crosses a cluster boundary. But
in the rewrite, the new code assumed that at most one iteration
would be needed to get to an alignment boundary.
However, it is easy to trigger an assertion failure: the Linux
kernel limits loopback devices to advertise a max_transfer of
only 64k. Any operation that requires falling back to writes
rather than more efficient zeroing must obey max_transfer during
that fallback, which means an unaligned head may require multiple
iterations of the write fallbacks before reaching the aligned
boundaries, when layering a format with clusters larger than 64k
atop the protocol of file access to a loopback device.
Test case:
$ qemu-img create -f qcow2 -o cluster_size=1M file 10M
$ losetup /dev/loop2 /path/to/file
$ qemu-io -f qcow2 /dev/loop2
qemu-io> w 7m 1k
qemu-io> w -z 8003584 2093056
In fairness to Denis (as the original listed author of the culprit
commit), the faulty logic for at most one iteration is probably all
my fault in reworking his idea. But the solution is to restore what
was in place prior to that commit: when dealing with an unaligned
head or tail, iterate as many times as necessary while fragmenting
the operation at max_transfer boundaries.
Reported-by: Ed Swierk <eswierk@skyportsystems.com>
CC: qemu-stable@nongnu.org
CC: Denis V. Lunev <den@openvz.org>
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
At the qcow2 layer, discard is only possible on a per-cluster
basis; at the moment, qcow2 silently rounds any unaligned
requests to this granularity. However, an upcoming patch will
fix a regression in the block layer ignoring too much of an
unaligned discard request, by changing the block layer to
break up a discard request at alignment boundaries; for that
to work, the block layer must know about our limits.
However, we can't go one step further by changing
qcow2_discard_clusters() to assert that requests are always
aligned, since that helper function is reached on paths
outside of the block layer.
CC: qemu-stable@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
virtio, vhost, pc: fixes
Most notably this fixes a regression with vhost introduced by the pull before
last.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Fri 18 Nov 2016 03:51:55 PM GMT
# gpg: using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* mst/tags/for_upstream:
acpi: Use apic_id_limit when calculating legacy ACPI table size
ipmi: fix qemu crash while migrating with ipmi
ivshmem: Fix 64 bit memory bar configuration
virtio: set ISR on dataplane notifications
virtio: access ISR atomically
virtio: introduce grab/release_ioeventfd to fix vhost
virtio-crypto: fix virtio_queue_set_notification() race
Message-id: 1479484366-7977-1-git-send-email-mst@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The code that calculates the legacy ACPI table size for migration
compatibility uses max_cpus when calculating legacy_aml_len (the size of
the DSDT and SSDT tables). However, the SSDT grows according to APIC ID
limit, not max_cpus.
The bug is not triggered very often because of the 4k alignment on the
table size. But it can be triggered if you are unlucky enough to cross a
4k boundary.
Change the legacy_aml_len calculation to use apic_id_limit, to calculate
the right size.
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>
Qemu crash in the source side while migrating, after starting ipmi service inside vm.
./x86_64-softmmu/qemu-system-x86_64 --enable-kvm -smp 4 -m 4096 \
-drive file=/work/suse/suse11_sp3_64_vt,format=raw,if=none,id=drive-virtio-disk0,cache=none \
-device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0 \
-vnc :99 -monitor vc -device ipmi-bmc-sim,id=bmc0 -device isa-ipmi-kcs,bmc=bmc0,ioport=0xca2
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffec4268700 (LWP 7657)]
__memcpy_ssse3_back () at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:2757
(gdb) bt
#0 __memcpy_ssse3_back () at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:2757
#1 0x00005555559ef775 in memcpy (__len=3, __src=0xc1421c, __dest=<optimized out>)
at /usr/include/bits/string3.h:51
#2 qemu_put_buffer (f=0x555557a97690, buf=0xc1421c <Address 0xc1421c out of bounds>, size=3)
at migration/qemu-file.c:346
#3 0x00005555559eef66 in vmstate_save_state (f=f@entry=0x555557a97690,
vmsd=0x555555f8a5a0 <vmstate_ISAIPMIKCSDevice>, opaque=0x555557231160,
vmdesc=vmdesc@entry=0x55555798cc40) at migration/vmstate.c:333
#4 0x00005555557cfe45 in vmstate_save (f=f@entry=0x555557a97690, se=se@entry=0x555557231de0,
vmdesc=vmdesc@entry=0x55555798cc40) at /mnt/sdb/zyy/qemu/migration/savevm.c:720
#5 0x00005555557d2be7 in qemu_savevm_state_complete_precopy (f=0x555557a97690,
iterable_only=iterable_only@entry=false) at /mnt/sdb/zyy/qemu/migration/savevm.c:1128
#6 0x00005555559ea102 in migration_completion (start_time=<synthetic pointer>,
old_vm_running=<synthetic pointer>, current_active_state=<optimized out>,
s=0x5555560eaa80 <current_migration.44078>) at migration/migration.c:1707
#7 migration_thread (opaque=0x5555560eaa80 <current_migration.44078>) at migration/migration.c:1855
#8 0x00007ffff3900dc5 in start_thread (arg=0x7ffec4268700) at pthread_create.c:308
#9 0x00007fffefc6c71d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Signed-off-by: Zhuang Yanying <ann.zhuangyanying@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Device ivshmem property use64=0 is designed to make the device
expose a 32 bit shared memory BAR instead of 64 bit one. The
default is a 64 bit BAR, except pc-1.2 and older retain a 32 bit
BAR. A 32 bit BAR can support only up to 1 GiB of shared memory.
This worked as designed until commit 5400c02 accidentally flipped
its sense: since then, we misinterpret use64=0 as use64=1 and vice
versa. Worse, the default got flipped as well. Devices
ivshmem-plain and ivshmem-doorbell are not affected.
Fix by restoring the test of IVShmemState member not_legacy_32bit
that got messed up in commit 5400c02. Also update its
initialization for devices ivhsmem-plain and ivshmem-doorbell.
Without that, they'd regress to 32 bit BARs.
Cc: qemu-stable@nongnu.org
Signed-off-by: Zhuang Yanying <ann.zhuangyanying@huawei.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Dataplane has been omitting forever the step of setting ISR when
an interrupt is raised. This caused little breakage, because the
specification actually says that ISR may not be updated in MSI mode.
Some versions of the Windows drivers however didn't clear MSI mode
correctly, and proceeded using polling mode (using ISR, not the used
ring index!) for crashdump and hibernation. If it were just crashdump
and hibernation it would not be a big deal, but recent releases of
Windows do not really shut down, but rather log out and hibernate to
make the next startup faster. Hence, this manifested as a more serious
hang during shutdown with e.g. Windows 8.1 and virtio-win 1.8.0 RPMs.
Newer versions fixed this, while older versions do not use MSI at all.
The failure has always been there for virtio dataplane, but it became
visible after commits 9ffe337 ("virtio-blk: always use dataplane path
if ioeventfd is active", 2016-10-30) and ad07cd6 ("virtio-scsi: always
use dataplane path if ioeventfd is active", 2016-10-30) made virtio-blk
and virtio-scsi always use the dataplane code under KVM. The good news
therefore is that it was not a bug in the patches---they were doing
exactly what they were meant for, i.e. shake out remaining dataplane bugs.
The fix is not hard, so it's worth arranging for the broken drivers.
The virtio_should_notify+event_notifier_set pair that is common to
virtio-blk and virtio-scsi dataplane is replaced with a new public
function virtio_notify_irqfd that also sets ISR. The irqfd emulation
code now need not set ISR anymore, so virtio_irq is removed.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Farhan Ali <alifm@linux.vnet.ibm.com>
Tested-by: Alex Williamson <alex.williamson@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>
Following the recent refactoring of virtio notifiers [1], more specifically
the patch ed08a2a0b ("virtio: use virtio_bus_set_host_notifier to
start/stop ioeventfd") that uses virtio_bus_set_host_notifier [2]
by default, core virtio code requires 'ioeventfd_started' to be set
to true/false when the host notifiers are configured.
When vhost is stopped and started, however, there is a stop followed by
another start. Since ioeventfd_started was never set to true, the 'stop'
operation triggered by virtio_bus_set_host_notifier() will not result
in a call to virtio_pci_ioeventfd_assign(assign=false). This leaves
the memory regions with stale notifiers and results on the next start
triggering the following assertion:
kvm_mem_ioeventfd_add: error adding ioeventfd: File exists
Aborted
This patch reintroduces (hopefully in a cleaner way) the concept
that was present with ioeventfd_disabled before the refactoring.
When ioeventfd_grabbed>0, ioeventfd_started tracks whether ioeventfd
should be enabled or not, but ioeventfd is actually not started at
all until vhost releases the host notifiers.
[1] http://lists.nongnu.org/archive/html/qemu-devel/2016-10/msg07748.html
[2] http://lists.nongnu.org/archive/html/qemu-devel/2016-10/msg07760.html
Reported-by: Felipe Franciosi <felipe@nutanix.com>
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Fixes: ed08a2a0b ("virtio: use virtio_bus_set_host_notifier to start/stop ioeventfd")
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Tested-by: Farhan Ali <alifm@linux.vnet.ibm.com>
Tested-by: Alex Williamson <alex.williamson@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>
We must check for new virtqueue buffers after re-enabling notifications.
This prevents the race condition where the guest added buffers just
after we stopped popping the virtqueue but before we re-enabled
notifications.
I think the virtio-crypto code was based on virtio-net but this crucial
detail was missed. virtio-net does not have the race condition because
it processes the virtqueue one more time after re-enabling
notifications.
Cc: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
If the QEMU source dir is
/var/tmp/aaa-qemu-clone
and the build dir is
/var/tmp/qemu-aio-poll-v2
Then I get an error as:
trace/generated-tracers.c:15950:13: error: invalid suffix "_trace_events"
on integer constant
TraceEvent *2_trace_events[] = {
^
trace/generated-tracers.c:15950:13: error: expected identifier or ‘(’ before
numeric constant
trace/generated-tracers.c: In function ‘trace_2_register_events’:
trace/generated-tracers.c:17949:32: error: invalid suffix "_trace_events" on
integer constant
trace_event_register_group(2_trace_events);
^
make: *** [trace/generated-tracers.o] Error 1
This patch fixes the issue.
Reported-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Tested-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Device ivshmem property use64=0 is designed to make the device
expose a 32 bit shared memory BAR instead of 64 bit one. The
default is a 64 bit BAR, except pc-1.2 and older retain a 32 bit
BAR. A 32 bit BAR can support only up to 1 GiB of shared memory.
This worked as designed until commit 5400c02 accidentally flipped
its sense: since then, we misinterpret use64=0 as use64=1 and vice
versa. Worse, the default got flipped as well. Devices
ivshmem-plain and ivshmem-doorbell are not affected.
Fix by restoring the test of IVShmemState member not_legacy_32bit
that got messed up in commit 5400c02. Also update its
initialization for devices ivhsmem-plain and ivshmem-doorbell.
Without that, they'd regress to 32 bit BARs.
Signed-off-by: Zhuang Yanying <ann.zhuangyanying@huawei.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1479385863-7648-1-git-send-email-ann.zhuangyanying@huawei.com>
PC will use this field in other way, so move it outside the common
code so PC could set a different value, i.e. all CPUs
regardless of where they are coming from (-smp X | -device cpu...).
It's quick and dirty hack as it could be implemented in more generic
way in MashineClass. But do it in simple way since only PC is affected
so far.
Later we can generalize it when another affected target gets support
for -device cpu.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1479212236-183810-3-git-send-email-imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
When using QEMU for Xen PV guest, QEMU abort with:
xen-common.c:118:xen_init: Object 0x7f2b8325dcb0 is not an instance of type generic-pc-machine
This is because the machine 'xenpv' also use accel=xen. Moving the code
to xen_hvm_init() fix the issue.
This fix 021746c131.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
2016-11-08 11:17:30 -08:00
598 changed files with 8252 additions and 2785 deletions
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