Merge qio 2017/10/04 v1
# gpg: Signature made Wed 04 Oct 2017 13:23:04 BST
# 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-qio-2017-10-04-1:
io: add trace events for websockets frame handling
io: Attempt to send websocket close messages to client
io: Reply to ping frames
io: Ignore websocket PING and PONG frames
io: Allow empty websocket payload
io: Add support for fragmented websocket binary frames
io: Small updates in preparation for websocket changes
ui: Always remove an old VNC channel watch before adding a new one
io: use case insensitive check for Connection & Upgrade websock headers
io: include full error message in websocket handshake trace
io: send proper HTTP response for websocket errors
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
It is useful to trace websockets frame encoding/decoding when debugging
problems.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Make a best effort attempt to close websocket connections according to
the RFC. Sends the close message, as room permits in the socket buffer,
and immediately closes the socket.
Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Add an immediate ping reply (pong) to the outgoing stream when a ping
is received. Unsolicited pongs are ignored.
Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Keep pings and gratuitous pongs generated by web browsers from killing
websocket connections.
Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Some browsers send pings/pongs with no payload, so allow empty payloads
instead of closing the connection.
Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Allows fragmented binary frames by saving the previous opcode. Handles
the case where an intermediary (i.e., web proxy) fragments frames
originally sent unfragmented by the client.
Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Gets rid of unnecessary bit shifting and performs proper EOF checking to
avoid a large number of repeated calls to recvmsg() when a client
abruptly terminates a connection (bug fix).
Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
When checking the value of the Connection and Upgrade HTTP headers
the websock RFC (6455) requires the comparison to be case insensitive.
The Connection value should be an exact match not a substring.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
When the websocket handshake fails it is useful to log the real
error message via the trace points for debugging purposes.
Fixes bug: #1715186
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
When any error occurs while processing the websockets handshake,
QEMU just terminates the connection abruptly. This is in violation
of the HTTP specs and does not help the client understand what they
did wrong. This is particularly bad when the client gives the wrong
path, as a "404 Not Found" would be very helpful.
Refactor the handshake code so that it always sends a response to
the client unless there was an I/O error.
Fixes bug: #1715186
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
NVIDIA has defined a specification for creating GPUDirect "cliques",
where devices with the same clique ID support direct peer-to-peer DMA.
When running on bare-metal, tools like NVIDIA's p2pBandwidthLatencyTest
(part of cuda-samples) determine which GPUs can support peer-to-peer
based on chipset and topology. When running in a VM, these tools have
no visibility to the physical hardware support or topology. This
option allows the user to specify hints via a vendor defined
capability. For instance:
<qemu:commandline>
<qemu:arg value='-set'/>
<qemu:arg value='device.hostdev0.x-nv-gpudirect-clique=0'/>
<qemu:arg value='-set'/>
<qemu:arg value='device.hostdev1.x-nv-gpudirect-clique=1'/>
<qemu:arg value='-set'/>
<qemu:arg value='device.hostdev2.x-nv-gpudirect-clique=1'/>
</qemu:commandline>
This enables two cliques. The first is a singleton clique with ID 0,
for the first hostdev defined in the XML (note that since cliques
define peer-to-peer sets, singleton clique offer no benefit). The
subsequent two hostdevs are both added to clique ID 1, indicating
peer-to-peer is possible between these devices.
QEMU only provides validation that the clique ID is valid and applied
to an NVIDIA graphics device, any validation that the resulting
cliques are functional and valid is the user's responsibility. The
NVIDIA specification allows a 4-bit clique ID, thus valid values are
0-15.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
If the hypervisor needs to add purely virtual capabilties, give us a
hook through quirks to do that. Note that we determine the maximum
size for a capability based on the physical device, if we insert a
virtual capability, that can change. Therefore if maximum size is
smaller after added virt capabilities, use that.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
If vfio_add_std_cap() errors then going to out prepends irrelevant
errors for capabilities we haven't attempted to add as we unwind our
recursive stack. Just return error.
Fixes: 7ef165b9a8 ("vfio/pci: Pass an error object to vfio_add_capabilities")
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
After iothread is enabled internally inside QEMU with GMainContext, we
may encounter this warning when destroying the iothread:
(qemu-system-x86_64:19925): GLib-CRITICAL **: g_source_remove_poll:
assertion '!SOURCE_DESTROYED (source)' failed
The problem is that g_source_remove_poll() does not allow to remove one
source from array if the source is detached from its owner
context. (peterx: which IMHO does not make much sense)
Fix it on QEMU side by avoid calling g_source_remove_poll() if we know
the object is during destruction, and we won't leak anything after all
since the array will be gone soon cleanly even with that fd.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20170928025958.1420-6-peterx@redhat.com
[peterx: write the commit message]
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
When gcontext is used with iothread, the context will be destroyed
during iothread_stop(). That's not good since sometimes we would like
to keep the resources until iothread is destroyed, but we may want to
stop the thread before that point.
Delay the destruction of gcontext to iothread finalize. Then we can do:
iothread_stop(thread);
some_cleanup_on_resources();
iothread_destroy(thread);
We may need this patch if we want to run chardev IOs in iothreads and
hopefully clean them up correctly. For more specific information,
please see 2b316774f6 ("qemu-char: do not operate on sources from
finalize callbacks").
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20170928025958.1420-5-peterx@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
So that internal iothread users can explicitly stop one iothread without
destroying it.
Since at it, fix iothread_stop() to allow it to be called multiple
times. Before this patch we may call iothread_stop() more than once on
single iothread, while that may not be correct since qemu_thread_join()
is not allowed to run twice. From manual of pthread_join():
Joining with a thread that has previously been joined results in
undefined behavior.
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20170928025958.1420-4-peterx@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
IOThread is a general framework that contains IO loop environment and a
real thread behind. It's also good to be used internally inside qemu.
Provide some helpers for it to create iothreads to be used internally.
Put all the internal used iothreads into the internal object container.
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20170928025958.1420-3-peterx@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
# gpg: Signature made Fri 29 Sep 2017 04:17:37 BST
# gpg: using RSA key 0xCA35624C6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5003 7CB7 9706 0F76 F021 AD56 CA35 624C 6A91 71C6
* remotes/famz/tags/docker-testing-pull-request:
docker: Don't mount ccache db if NOUSER=1
docker: test-block: Don't continue if build fails
tests/docker/run: don't source /etc/profile
docker: Fix test-mingw
docker: add installation to build tests
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
On a modern server-class ppc host with the following CPU topology:
Architecture: ppc64le
Byte Order: Little Endian
CPU(s): 32
On-line CPU(s) list: 0,8,16,24
Off-line CPU(s) list: 1-7,9-15,17-23,25-31
Thread(s) per core: 1
If both KVM PR and KVM HV loaded and we pass:
-machine pseries,accel=kvm,kvm-type=PR -smp 8
We expect QEMU to warn that this exceeds the number of online CPUs:
Warning: Number of SMP cpus requested (8) exceeds the recommended
cpus supported by KVM (4)
Warning: Number of hotpluggable cpus requested (8) exceeds the
recommended cpus supported by KVM (4)
but nothing is printed...
This happens because on ppc the KVM_CAP_NR_VCPUS capability is VM
specific ndreally depends on the KVM type, but we currently use it
as a global capability. And KVM returns a fallback value based on
KVM HV being present. Maybe KVM on POWER shouldn't presume anything
as long as it doesn't have a VM, but in all cases, we should call
KVM_CREATE_VM first and use KVM_CAP_NR_VCPUS as a VM capability.
This patch hence changes kvm_recommended_vcpus() accordingly and
moves the sanity checking of smp_cpus after the VM creation.
It is okay for the other archs that also implement KVM_CAP_NR_VCPUS,
ie, mips, s390, x86 and arm, because they don't depend on the VM
being created or not.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <150600966286.30533.10909862523552370889.stgit@bahia.lan>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
On a server-class ppc host, this capability depends on the KVM type,
ie, HV or PR. If both KVM are present in the kernel, we will always
get the HV specific value, even if we explicitely requested PR on
the command line.
This can have an impact if we're using hugepages or a balloon device.
Since we've already created the VM at the time any user calls
kvm_has_sync_mmu(), switching to kvm_vm_check_extension() is
enough to fix any potential issue.
It is okay for the other archs that also implement KVM_CAP_SYNC_MMU,
ie, mips, s390, x86 and arm, because they don't depend on the VM being
created or not.
While here, let's cache the state of this extension in a bool variable,
since it has several users in the code, as suggested by Thomas Huth.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <150600965332.30533.14702405809647835716.stgit@bahia.lan>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is a library header, so angle brackets are more appropriate; also
move the line to before QEMU headers, as is recommended in HACKING.
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 20170920085952.3872-1-famz@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Valgrind detects an invalid read operation when hot-plugging of an
USB device fails:
$ valgrind x86_64-softmmu/qemu-system-x86_64 -device usb-ehci -nographic -S
==30598== Memcheck, a memory error detector
==30598== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==30598== Using Valgrind-3.12.0 and LibVEX; rerun with -h for copyright info
==30598== Command: x86_64-softmmu/qemu-system-x86_64 -device usb-ehci -nographic -S
==30598==
QEMU 2.10.50 monitor - type 'help' for more information
(qemu) device_add usb-tablet
(qemu) device_add usb-tablet
(qemu) device_add usb-tablet
(qemu) device_add usb-tablet
(qemu) device_add usb-tablet
(qemu) device_add usb-tablet
==30598== Invalid read of size 8
==30598== at 0x60EF50: object_unparent (object.c:445)
==30598== by 0x580F0D: usb_try_create_simple (bus.c:346)
==30598== by 0x581BEB: usb_claim_port (bus.c:451)
==30598== by 0x582310: usb_qdev_realize (bus.c:257)
==30598== by 0x4CB399: device_set_realized (qdev.c:914)
==30598== by 0x60E26D: property_set_bool (object.c:1886)
==30598== by 0x61235E: object_property_set_qobject (qom-qobject.c:27)
==30598== by 0x61000F: object_property_set_bool (object.c:1162)
==30598== by 0x4567C3: qdev_device_add (qdev-monitor.c:630)
==30598== by 0x456D52: qmp_device_add (qdev-monitor.c:807)
==30598== by 0x470A99: hmp_device_add (hmp.c:1933)
==30598== by 0x3679C3: handle_hmp_command (monitor.c:3123)
The object_unparent() here is not necessary anymore since commit
69382d8b3e ("qdev: Fix object reference leak in case device.realize()
fails"), so let's remove it now.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 1506526106-30971-1-git-send-email-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Currently, iothread_stop_all() makes all iothread objects unsafe
to be destroyed, because qemu_thread_join() ends up being called
twice.
To fix this, make iothread_stop() idempotent by checking
thread->stopped.
Fixes the following crash:
qemu-system-x86_64 -object iothread,id=iothread0 -monitor stdio -display none
QEMU 2.10.50 monitor - type 'help' for more information
(qemu) quit
qemu: qemu_thread_join: No such process
Aborted (core dumped)
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20170926130028.12471-1-ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
qemu uses wheel-up/down button events for mouse wheel input, however
linux applications typically want REL_WHEEL events.
This fixes wheel with linux guests. Tested with X11/wayland, and
windows virtio-input driver.
Based on a patch from Marc.
Added property to enable/disable wheel axis.
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20170926113243.26081-1-kraxel@redhat.com
Rename the functions to to say "setup" instead of "create" because they
support being called multiple times on the same egl framebuffer.
Properly delete unused textures, update function interfaces to support
this.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20170927115031.12063-1-kraxel@redhat.com
