Commit Graph

69356 Commits

Author SHA1 Message Date
Dan Streetman
6ab79a20af do not call vhost_net_cleanup() on running net from char user event
Buglink: https://launchpad.net/bugs/1823458

Currently, a user CHR_EVENT_CLOSED event will cause net_vhost_user_event()
to call vhost_user_cleanup(), which calls vhost_net_cleanup() for all
its queues.  However, vhost_net_cleanup() must never be called like
this for fully-initialized nets; when other code later calls
vhost_net_stop() - such as from virtio_net_vhost_status() - it will try
to access the already-cleaned-up fields and fail with assertion errors
or segfaults.

The vhost_net_cleanup() will eventually be called from
qemu_cleanup_net_client().

Signed-off-by: Dan Streetman <ddstreet@canonical.com>
Message-Id: <20190416184624.15397-3-dan.streetman@canonical.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Igor Mammedov
fe4970ad46 q35: acpi: do not create dummy MCFG table
Dummy table (with signature "QEMU") creation came from original SeaBIOS
codebase. And QEMU would have to keep it around if there were Q35 machine
that depended on keeping ACPI tables blob constant size. Luckily there
were no versioned Q35 machine types before commit:
  (since 2.3) a1666142db acpi-build: make ROMs RAM blocks resizeable
which obsoleted need to keep ACPI tables blob the same size on source/destination.

Considering the 1st versioned machine is pc-q35-2.4, the dummy table
is not really necessary and it's safe to drop it without breaking
cross version migration in both directions unconditionally.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1554822037-329838-1-git-send-email-imammedo@redhat.com>
Reviewed-by: Wei Yang <richardw.yang@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Markus Armbruster
03459ea3b3 acpi/pcihp: Add a few more trace points related to unplug
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190402161900.7374-4-armbru@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>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-05-20 18:40:02 -04:00
Markus Armbruster
df93b19476 acpi/pcihp: Convert debug printf()s to trace events
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190402161900.7374-3-armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-05-20 18:40:02 -04:00
Markus Armbruster
b37d56ece9 acpi/piix4: Convert debug printf()s to trace events
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190402161900.7374-2-armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-05-20 18:40:02 -04:00
Xie Yongji
6b8f9c6e15 contrib/vhost-user-blk: enable inflight I/O tracking
This patch enables inflight I/O tracking for
vhost-user-blk backend so that we could restart it safely.

Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190320112646.3712-8-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Xie Yongji
77542d4314 vhost-user-blk: Add support to reconnect backend
Since we now support the message VHOST_USER_GET_INFLIGHT_FD
and VHOST_USER_SET_INFLIGHT_FD. The backend is able to restart
safely because it can track inflight I/O in shared memory.
This patch allows qemu to reconnect the backend after
connection closed.

Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Ni Xun <nixun@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190320112646.3712-7-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Xie Yongji
a57f009108 vhost-user-blk: Add return value for vhost_user_blk_start()
Add a return value for vhost_user_blk_start() to check whether
we start vhost-user backend successfully or not.

Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190320112646.3712-6-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Xie Yongji
f3facbe671 vhost-user-blk: Only start vhost-user backend with the first kick
We should only start vhost-user backend at the first kick for
virtio 1.0 transitional devices.

Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190320112646.3712-5-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Xie Yongji
96cb549817 vhost-user-blk: Use started flag in vhost_user_blk_set_status()
Use started flag in vhost_user_blk_set_status() to decide if
starting vhost-user backend or not.

Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190320112646.3712-4-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Xie Yongji
7dc7f12297 virtio: Use started flag in virtio_vmstate_change()
Currently, we use DRIVER_OK status bit to check whether guest
driver has started the device in virtio_vmstate_change(). But it's
not the case for virtio 1.0 transitional devices. If migration completes
between kicking virtqueue and setting VIRTIO_CONFIG_S_DRIVER_OK, guest
may be hung. So here we use started flag to check guest state instead.

Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190320112646.3712-3-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Xie Yongji
badaf79cfd virtio: Introduce started flag to VirtioDevice
The virtio 1.0 transitional devices support driver uses the device
before setting the DRIVER_OK status bit. So we introduce a started
flag to indicate whether driver has started the device or not.

Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190320112646.3712-2-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Marc-André Lureau
ed1be66bfc docs: reST-ify vhost-user documentation
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20190315180735.13096-1-marcandre.lureau@redhat.com>
Reviewed-by: Jens Freimann <jfreimann@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Daniel P. Berrangé
8fa70dbd8b Revert "globals: Allow global properties to be optional"
This reverts commit d7741743f4.

Relying on setting properties on parents types which may not
be relevant to certain sub-classes had unexpected side-effects
causing bugs in device config defaults. It is preferrable to
be explicit about which devices get which properties, even if
this needs repetition.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20190215103239.28640-3-berrange@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Daniel P. Berrangé
f2784eed30 hw: report invalid disable-legacy|modern usage for virtio-1-only devs
A number of virtio devices (gpu, crypto, mouse, keyboard, tablet) only
support the virtio-1 (aka modern) mode. Currently if the user launches
QEMU, setting those devices to enable legacy mode, QEMU will silently
create them in modern mode, ignoring the user's (mistaken) request.

This patch introduces proper data validation so that an attempt to
configure a virtio-1-only devices in legacy mode gets reported as an
error to the user.

Checking this required introduction of a new field to explicitly track
what operating model is to be used for a device, separately from the
disable_modern and disable_legacy fields that record the user's
requested configuration.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20190215103239.28640-2-berrange@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-20 18:40:02 -04:00
Peter Maydell
2259637b95 Block layer patches:
- block: AioContext management, part 1
 - qmp: forbid qmp_cont in RUN_STATE_FINISH_MIGRATE
 - nvme: fix copy direction in DMA reads going to CMB
 - file-posix: Fix block status for unaligned raw images with O_DIRECT
 - file-posix: Fix xfs_write_zeroes() after EOF
 - Documentation and iotests improvements
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches:

- block: AioContext management, part 1
- qmp: forbid qmp_cont in RUN_STATE_FINISH_MIGRATE
- nvme: fix copy direction in DMA reads going to CMB
- file-posix: Fix block status for unaligned raw images with O_DIRECT
- file-posix: Fix xfs_write_zeroes() after EOF
- Documentation and iotests improvements

# gpg: Signature made Mon 20 May 2019 16:12:38 BST
# gpg:                using RSA key 7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (24 commits)
  iotests: Make 245 faster and more reliable
  iotests.py: Fix VM.run_job
  iotests.py: Let assert_qmp() accept an array
  block: Improve "Block node is read-only" message
  qemu-img.texi: Describe human-readable info output
  qemu-img.texi: Be specific about JSON object types
  iotests: Test unaligned raw images with O_DIRECT
  block/file-posix: Unaligned O_DIRECT block-status
  test-block-iothread: Test AioContext propagation for block jobs
  blockjob: Remove AioContext notifiers
  blockjob: Propagate AioContext change to all job nodes
  block: Add blk_set_allow_aio_context_change()
  block: Implement .(can_)set_aio_ctx for BlockBackend
  test-block-iothread: Test AioContext propagation through the tree
  block: Propagate AioContext change to parents
  block: Move recursion to bdrv_set_aio_context()
  block: Make bdrv_attach/detach_aio_context() static
  block: Add bdrv_try_set_aio_context()
  nvme: fix copy direction in DMA reads going to CMB
  iotest: fix 169: do not run qmp_cont in RUN_STATE_FINISH_MIGRATE
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-20 17:22:05 +01:00
Max Reitz
c423a6af59 iotests: Make 245 faster and more reliable
Sometimes, 245 fails for me because some stream job has already finished
while the test expects it to still be active.  (With -c none, it fails
basically every time.) The most reliable way to fix this is to simply
set auto_finalize=false so the job will remain in the block graph as
long as we need it.  This allows us to drop the rate limiting, too,
which makes the test faster.

The only problem with this is that there is a single place that yields a
different error message depending on whether the stream job is still
copying data (so COR is enabled) or not (COR has been disabled, but the
job still has the WRITE_UNCHANGED permission on the target node).  We
can easily address that by expecting either error message.

Note that we do not need auto_finalize=false (or rate limiting) for the
active commit job, because It never completes without an explicit
block-job-complete anyway.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:57 +02:00
Max Reitz
86a4f599a6 iotests.py: Fix VM.run_job
log() is in the current module, there is no need to prefix it.  In fact,
doing so may make VM.run_job() unusable in tests that never use
iotests.log() themselves.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:57 +02:00
Max Reitz
a93a42bd91 iotests.py: Let assert_qmp() accept an array
Sometimes we cannot tell which error message qemu will emit, and we do
not care.  With this change, we can then just pass an array of all
possible messages to assert_qmp() and it will choose the right one.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:57 +02:00
Max Reitz
481e0eeef4 block: Improve "Block node is read-only" message
This message does not make any sense when it appears as the response to
making an R/W node read-only.  We should detect that case and emit a
different message, then.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:57 +02:00
Max Reitz
4db4390ef3 qemu-img.texi: Describe human-readable info output
Ideally, it should be self-explanatory.  However, keys like "disk size"
arguably really are not self-explanatory.  In any case, there is no harm
in going into a some more detail here.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:57 +02:00
Max Reitz
987402c5c2 qemu-img.texi: Be specific about JSON object types
Just writing that --output=json outputs JSON information does not really
help; we should also make a note of what QAPI type the result object
has.  (The map subcommand does not emit a QAPI-typed object, but its
section already describes the object structure well enough.)

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:57 +02:00
Max Reitz
2fab30c80b iotests: Test unaligned raw images with O_DIRECT
We already have 221 for accesses through the page cache, but it is
better to create a new file for O_DIRECT instead of integrating those
test cases into 221.  This way, we can make use of
_supported_cache_modes (and _default_cache_mode) so the test is
automatically skipped on filesystems that do not support O_DIRECT.

As part of the split, add _supported_cache_modes to 221.  With that, it
no longer fails when run with -c none or -c directsync.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:57 +02:00
Max Reitz
9c3db310ff block/file-posix: Unaligned O_DIRECT block-status
Currently, qemu crashes whenever someone queries the block status of an
unaligned image tail of an O_DIRECT image:
$ echo > foo
$ qemu-img map --image-opts driver=file,filename=foo,cache.direct=on
Offset          Length          Mapped to       File
qemu-img: block/io.c:2093: bdrv_co_block_status: Assertion `*pnum &&
QEMU_IS_ALIGNED(*pnum, align) && align > offset - aligned_offset'
failed.

This is because bdrv_co_block_status() checks that the result returned
by the driver's implementation is aligned to the request_alignment, but
file-posix can fail to do so, which is actually mentioned in a comment
there: "[...] possibly including a partial sector at EOF".

Fix this by rounding up those partial sectors.

There are two possible alternative fixes:
(1) We could refuse to open unaligned image files with O_DIRECT
    altogether.  That sounds reasonable until you realize that qcow2
    does necessarily not fill up its metadata clusters, and that nobody
    runs qemu-img create with O_DIRECT.  Therefore, unpreallocated qcow2
    files usually have an unaligned image tail.

(2) bdrv_co_block_status() could ignore unaligned tails.  It actually
    throws away everything past the EOF already, so that sounds
    reasonable.
    Unfortunately, the block layer knows file lengths only with a
    granularity of BDRV_SECTOR_SIZE, so bdrv_co_block_status() usually
    would have to guess whether its file length information is inexact
    or whether the driver is broken.

Fixing what raw_co_block_status() returns is the safest thing to do.

There seems to be no other block driver that sets request_alignment and
does not make sure that it always returns aligned values.

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:57 +02:00
Kevin Wolf
012056f48d test-block-iothread: Test AioContext propagation for block jobs
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:57 +02:00
Kevin Wolf
657e120320 blockjob: Remove AioContext notifiers
The notifiers made sure that the job is quiesced and that the
job->aio_context field is updated. The first part is unnecessary today
since bdrv_set_aio_context_ignore() drains the block node, and this
means drainig the block job, too. The second part can be done in the
.set_aio_ctx callback of the block job BdrvChildRole.

The notifiers were problematic because they poll the AioContext while
the graph is in an inconsistent state with some nodes already in the new
context, but others still in the old context. So removing the notifiers
not only simplifies the code, but actually makes the code safer.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Kevin Wolf
9ff7f0df87 blockjob: Propagate AioContext change to all job nodes
Block jobs require that all of the nodes the job is using are in the
same AioContext. Therefore all BdrvChild objects of the job propagate
.(can_)set_aio_context to all other job nodes, so that the switch is
checked and performed consistently even if both nodes are in different
subtrees.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Kevin Wolf
980b0f943a block: Add blk_set_allow_aio_context_change()
Some users (like block jobs) can tolerate an AioContext change for their
BlockBackend. Add a function that tells the BlockBackend that it can
allow changes.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Kevin Wolf
38475269d4 block: Implement .(can_)set_aio_ctx for BlockBackend
bdrv_try_set_aio_context() currently fails if a BlockBackend is attached
to a node because it doesn't implement the BdrvChildRole callbacks for
AioContext management.

We can allow changing the AioContext of monitor-owned BlockBackends as
long as no device is attached to them.

When setting the AioContext of the root node of a BlockBackend, we now
need to pass blk->root as an ignored child because we don't want the
root node to recursively call back into BlockBackend and execute
blk_do_set_aio_context() a second time.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Kevin Wolf
7e2f096a82 test-block-iothread: Test AioContext propagation through the tree
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Kevin Wolf
53a7d04185 block: Propagate AioContext change to parents
All block nodes and users in any connected component of the block graph
must be in the same AioContext, so changing the AioContext of one node
must not only change all of its children, but all of its parents (and
in turn their children etc.) as well.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Kevin Wolf
0d83708a1d block: Move recursion to bdrv_set_aio_context()
Instead of having two recursions, in bdrv_attach_aio_context() and in
bdrv_detach_aio_context(), just having one recursion is enough. Said
functions are only about a single node now.

It is important that the recursion doesn't happen between detaching and
attaching a context to the current node because the nested call will
drain the node, and draining with a NULL context would segfault.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Kevin Wolf
a3a683c33d block: Make bdrv_attach/detach_aio_context() static
Since commit b97511c7bc, there is no reason for block drivers any more
to call these functions (see the function comment in block_int.h). They
are now just internal helper functions for bdrv_set_aio_context()
and can be made static.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Kevin Wolf
5d2318499f block: Add bdrv_try_set_aio_context()
Eventually, we want to make sure that all parents and all children of a
node are in the same AioContext as the node itself. This means that
changing the AioContext may fail because one of the other involved
parties (e.g. a guest device that was configured with an iothread)
cannot allow switching to a different AioContext.

Introduce a set of functions that allow to first check whether all
involved nodes can switch to a new context and only then do the actual
switch. The check recursively covers children and parents.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Klaus Birkelund Jensen
25349e8250 nvme: fix copy direction in DMA reads going to CMB
`nvme_dma_read_prp` erronously used `qemu_iovec_*to*_buf` instead of
`qemu_iovec_*from*_buf` when the request involved the controller memory
buffer.

Signed-off-by: Klaus Birkelund Jensen <klaus.jensen@cnexlabs.com>
Reviewed-by: Kenneth Heitke <kenneth.heitke@intel.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Vladimir Sementsov-Ogievskiy
832d78caa5 iotest: fix 169: do not run qmp_cont in RUN_STATE_FINISH_MIGRATE
qmp_cont fails if vm in RUN_STATE_FINISH_MIGRATE, so let's wait for
final RUN_STATE_POSTMIGRATE. Also, while being here, check qmp_cont
result.

Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Tested-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Vladimir Sementsov-Ogievskiy
9183dd1533 qmp: forbid qmp_cont in RUN_STATE_FINISH_MIGRATE
qmp_cont in RUN_STATE_FINISH_MIGRATE may lead to moving vm to
RUN_STATE_RUNNING, before actual migration finish. So, when migration
thread will try to go to RUN_STATE_POSTMIGRATE, assuming transition
RUN_STATE_FINISH_MIGRATE->RUN_STATE_POSTMIGRATE, it will crash, as
current state is RUN_STATE_RUNNING, and transition
RUN_STATE_RUNNING->RUN_STATE_POSTMIGRATE is forbidden.

Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Alberto Garcia
41ae31e3d7 block: Use BDRV_REQUEST_MAX_BYTES instead of BDRV_REQUEST_MAX_SECTORS
There are a few places in which we turn a number of bytes into sectors
in order to compare the result against BDRV_REQUEST_MAX_SECTORS
instead of using BDRV_REQUEST_MAX_BYTES directly.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Alberto Garcia
b6c246942b qcow2: Define and use QCOW2_COMPRESSED_SECTOR_SIZE
When an L2 table entry points to a compressed cluster the space used
by the data is specified in 512-byte sectors. This size is independent
from BDRV_SECTOR_SIZE and is specific to the qcow2 file format.

The QCOW2_COMPRESSED_SECTOR_SIZE constant defined in this patch makes
this explicit.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Max Reitz
50ba5b2d99 block/file-posix: Truncate in xfs_write_zeroes()
XFS_IOC_ZERO_RANGE does not increase the file length:
$ touch foo
$ xfs_io -c 'zero 0 65536' foo
$ stat -c "size=%s, blocks=%b" foo
size=0, blocks=128

We do want writes beyond the EOF to automatically increase the file
length, however.  This is evidenced by the fact that iotest 061 is
broken on XFS since qcow2's check implementation checks for blocks
beyond the EOF.

Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-20 17:08:56 +02:00
Peter Maydell
6d8e75d41c Fix https://bugs.launchpad.net/bugs/1701835
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Merge remote-tracking branch 'remotes/rth/tags/pull-axp-20190519' into staging

Fix https://bugs.launchpad.net/bugs/1701835

# gpg: Signature made Sun 19 May 2019 15:31:37 BST
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-axp-20190519:
  target/alpha: Fix user-only floating-point exceptions
  target/alpha: Clean up alpha_cpu_dump_state

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-20 11:38:36 +01:00
Peter Maydell
76c759e033 This fixes the virtfs documentation (LP 1581976), deprecates the
-virtfs_synth command line option, along with some assorted cleanups.
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Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging

This fixes the virtfs documentation (LP 1581976), deprecates the
-virtfs_synth command line option, along with some assorted cleanups.

# gpg: Signature made Fri 17 May 2019 19:29:40 BST
# gpg:                using RSA key B4828BAF943140CEF2A3491071D4D5E5822F73D6
# gpg: Good signature from "Greg Kurz <groug@kaod.org>" [full]
# gpg:                 aka "Gregory Kurz <gregory.kurz@free.fr>" [full]
# gpg:                 aka "[jpeg image of size 3330]" [full]
# Primary key fingerprint: B482 8BAF 9431 40CE F2A3  4910 71D4 D5E5 822F 73D6

* remotes/gkurz/tags/for-upstream:
  virtfs: Fix documentation of -fsdev and -virtfs
  vl: Deprecate -virtfs_synth
  fsdev: Error out when unsupported option is passed
  fsdev: Move some types definition to qemu-fsdev.c
  fsdev: Drop unused opaque field
  fsdev: Drop unused extern declaration

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	qemu-deprecated.texi
2019-05-20 10:51:42 +01:00
Richard Henderson
21ba856499 target/alpha: Fix user-only floating-point exceptions
Record the software fp control register, as set by the
osf_setsysinfo syscall.  Add those masked exceptions
to fpcr_exc_enable.  Do not raise a signal for masked
fp exceptions.

Fixes: https://bugs.launchpad.net/bugs/1701835
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-19 07:30:03 -07:00
Richard Henderson
4a24793290 target/alpha: Clean up alpha_cpu_dump_state
Drop the "RI" and "FIR" prefixes; use only the normal linux names.
Add the FPCR to the dump.

Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-19 07:29:38 -07:00
Peter Maydell
1b46b4daa6 ui: bugfixes for curses, opengl console and kbd state tracker.
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Merge remote-tracking branch 'remotes/kraxel/tags/ui-20190517-pull-request' into staging

ui: bugfixes for curses, opengl console and kbd state tracker.

# gpg: Signature made Fri 17 May 2019 17:12:30 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/ui-20190517-pull-request:
  kbd-state: fix autorepeat handling
  ui/console: Precautionary glBindTexture and surface->texture validation in surface_gl_update_texture
  ui/curses: manipulate cchar_t with standard curses functions
  ui/curses: do not assume wchar_t contains unicode

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-17 17:25:19 +01:00
Greg Kurz
b44a6b0970 virtfs: Fix documentation of -fsdev and -virtfs
This fixes several things:
- add "id" description to -virtfs documentation
- split the description into several lines in both usage and documentation
  for accurateness and clarity
- add documentation and usage of the synth fsdriver
- add "throttling.*" description to -fsdev local
- add some missing periods
- add proper reference to the virtfs-proxy-helper(1) manual page
- document that the virtio device may be either virtio-9p-pci, virtio-9p-ccw
  or virtio-9p-device, depending on the machine type

Buglink: https://bugs.launchpad.net/qemu/+bug/1581976
Signed-off-by: Greg Kurz <groug@kaod.org>
Acked-by: Thomas Huth <thuth@redhat.com>
2019-05-17 17:34:49 +02:00
Greg Kurz
6e4199af73 vl: Deprecate -virtfs_synth
The synth fsdriver never got used for anything else but the QTest
testcase for VirtIO 9P. And even there, QTest uses -fsdev synth and
-device virtio-9p-... directly.

Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
2019-05-17 17:34:48 +02:00
Greg Kurz
aee7f3ecd8 fsdev: Error out when unsupported option is passed
Each fsdriver only supports a subset of the options that can be passed
to -fsdev. Unsupported options are simply ignored. This could cause the
user to erroneously think QEMU has a bug.

Enforce strict checking of supported options for all fsdrivers. This
shouldn't impact libvirt, since it doesn't know about the synth and
proxy fsdrivers.

Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
2019-05-17 17:34:48 +02:00
Greg Kurz
2023243573 fsdev: Move some types definition to qemu-fsdev.c
It would make sense for these types to be defined in a header file if
we had an API for fsdrivers to register themselves. In practice, we
only have three of them and it is very unlikely we add new ones since
the future of file sharing between host and guest is the upcoming
virtio-fs.

Move the types to qemu-fsdev.c instead since they are only used there.

Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
2019-05-17 17:34:48 +02:00
Greg Kurz
778f0fad5f fsdev: Drop unused opaque field
This was introduced along with -fsdev but it never got used.

Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
2019-05-17 17:34:48 +02:00