sdk/emulator/qemu.git
10 years agoMerge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging
Peter Maydell [Tue, 1 Jul 2014 13:21:50 +0000 (14:21 +0100)]
Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

Tracing pull request

# gpg: Signature made Tue 01 Jul 2014 09:56:27 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/tracing-pull-request:
  trace: add qemu_system_powerdown_request and qemu_system_shutdown_request trace events

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agoMerge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
Peter Maydell [Tue, 1 Jul 2014 12:13:04 +0000 (13:13 +0100)]
Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Block pull request

# gpg: Signature made Tue 01 Jul 2014 09:47:15 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/block-pull-request: (23 commits)
  block: add backing-file option to block-stream
  block: extend block-commit to accept a string for the backing file
  block: add helper function to determine if a BDS is in a chain
  block: add QAPI command to allow live backing file change
  qapi: Change back sector-count to sectors-count in quorum QAPI events.
  block/cow: Avoid use of uninitialized cow_bs in error path
  block: simplify bdrv_find_base() and bdrv_find_overlay()
  block: make 'top' argument to block-commit optional
  iotests: Add more tests to quick group
  iotests: Add qemu tests to quick group
  iotests: Simplify qemu-iotests-quick.sh
  qemu-img create: add 'nocow' option
  virtio-blk: remove need for explicit x-data-plane=on option
  qdev: drop iothread property type
  virtio-blk: replace x-iothread with iothread link property
  virtio-blk: move qdev properties into virtio-blk.c
  virtio: fix virtio-blk child refcount in transports
  virtio-blk: drop virtio_blk_set_conf()
  virtio-blk: use aliases instead of duplicate qdev properties
  qdev: add qdev_alias_all_properties()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agoMerge remote-tracking branch 'remotes/bonzini/memory' into staging
Peter Maydell [Tue, 1 Jul 2014 10:55:48 +0000 (11:55 +0100)]
Merge remote-tracking branch 'remotes/bonzini/memory' into staging

* remotes/bonzini/memory:
  qdev: correctly send DEVICE_DELETED for recursively-deleted devices
  memory: do not give a name to the internal exec.c regions
  memory: MemoryRegion: Add size property
  memory: MemoryRegion: Add may-overlap and priority props
  memory: MemoryRegion: Add container and addr props
  memory: MemoryRegion: replace owner field with QOM parent
  memory: MemoryRegion: QOMify
  memory: MemoryRegion: use /machine as default owner
  libqtest: escape strings in QMP commands, fix leak
  qom: object: Ignore refs/unrefs of NULL
  qom: object: remove parent pointer when unparenting
  mc146818rtc: add "rtc-time" link to "/machine/rtc"
  qom: allow creating an alias of a child<> property
  qom: add a generic mechanism to resolve paths
  qom: add object_property_add_alias()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agoMerge remote-tracking branch 'remotes/afaerber/tags/qom-devices-for-2.1' into staging
Peter Maydell [Tue, 1 Jul 2014 10:00:52 +0000 (11:00 +0100)]
Merge remote-tracking branch 'remotes/afaerber/tags/qom-devices-for-2.1' into staging

QOM and device refactorings

* QOM unparenting cleanup
* IRQ conversion to QOM

# gpg: Signature made Tue 01 Jul 2014 04:03:23 BST using RSA key ID 3E7E013F
# gpg: Good signature from "Andreas Färber <afaerber@suse.de>"
# gpg:                 aka "Andreas Färber <afaerber@suse.com>"

* remotes/afaerber/tags/qom-devices-for-2.1:
  irq: Slim conversion of qemu_irq to QOM
  irq: Allocate IRQs individually
  hw: Fix qemu_allocate_irqs() leaks
  sdhci: Fix misuse of qemu_free_irqs()
  qom: Remove parent pointer when unparenting

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agoMerge remote-tracking branch 'remotes/bonzini/scsi-next' into staging
Peter Maydell [Tue, 1 Jul 2014 09:28:52 +0000 (10:28 +0100)]
Merge remote-tracking branch 'remotes/bonzini/scsi-next' into staging

* remotes/bonzini/scsi-next:
  configure: Fix -lm test, so that tools can be compiled on hosts that require -lm
  virtio-scsi: scsi events must be converted to target endianness
  virtio-scsi: virtio_scsi_push_event() lacks VirtIOSCSIReq parsing

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agotrace: add qemu_system_powerdown_request and qemu_system_shutdown_request trace events
Yang Zhiyong [Sat, 21 Jun 2014 18:43:03 +0000 (02:43 +0800)]
trace: add qemu_system_powerdown_request and qemu_system_shutdown_request trace events

We have the experience that the guest doesn't stop successfully
though it was instructed to shut down.

The root cause may be not in QEMU mostly.  However, QEMU is often
suspected at the beginning just because the issue occurred in
virtualization environment.

Therefore, we need to affirm that QEMU received the shutdown
request and raised ACPI irq from "virsh shutdown" command,
virt-manger or stopping QEMU process to the VM .
So that we can affirm the problems was belonged to the Guset OS
rather than the QEMU itself.

When we stop guests by "virsh shutdown" command or virt-manger,
or stopping QEMU process, qemu_system_powerdown_request() or
qemu_system_shutdown_request() is called. Then the below functions
in main_loop_should_exit() of Vl.c are called roughly in the
following order.

if (qemu_powerdown_requested())
qemu_system_powerdown()
monitor_protocol_event(QEVENT_POWERDOWN, NULL)

OR

if(qemu_shutdown_requested()}
monitor_protocol_event(QEVENT_SHUTDOWN, NULL);

The tracepoint of monitor_protocol_event() already exists, but no
tracepoints are defined for qemu_system_powerdown_request() and
qemu_system_shutdown_request(). So this patch adds two tracepoints for
the two functions. We believe that it will become much easier to
isolate the problem mentioned above by these tracepoints.

Signed-off-by: Yang Zhiyong <yangzy.fnst@cn.fujitsu.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoblock: add backing-file option to block-stream
Jeff Cody [Wed, 25 Jun 2014 19:40:11 +0000 (15:40 -0400)]
block: add backing-file option to block-stream

On some image chains, QEMU may not always be able to resolve the
filenames properly, when updating the backing file of an image
after a block job.

For instance, certain relative pathnames may fail, or drives may
have been specified originally by file descriptor (e.g. /dev/fd/???),
or a relative protocol pathname may have been used.

In these instances, QEMU may lack the information to be able to make
the correct choice, but the user or management layer most likely does
have that knowledge.

With this extension to the block-stream api, the user is able to change
the backing file of the active layer as part of the block-stream
operation.

This allows the change to be 'safe', in the sense that if the attempt
to write the active image metadata fails, then the block-stream
operation returns failure, without disrupting the guest.

If a backing file string is not specified in the command, the backing
file string to use is determined in the same manner as it was
previously.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoblock: extend block-commit to accept a string for the backing file
Jeff Cody [Wed, 25 Jun 2014 19:40:10 +0000 (15:40 -0400)]
block: extend block-commit to accept a string for the backing file

On some image chains, QEMU may not always be able to resolve the
filenames properly, when updating the backing file of an image
after a block commit.

For instance, certain relative pathnames may fail, or drives may
have been specified originally by file descriptor (e.g. /dev/fd/???),
or a relative protocol pathname may have been used.

In these instances, QEMU may lack the information to be able to make
the correct choice, but the user or management layer most likely does
have that knowledge.

With this extension to the block-commit api, the user is able to change
the backing file of the overlay image as part of the block-commit
operation.

This allows the change to be 'safe', in the sense that if the attempt
to write the overlay image metadata fails, then the block-commit
operation returns failure, without disrupting the guest.

If the commit top is the active layer, then specifying the backing
file string will be treated as an error (there is no overlay image
to modify in that case).

If a backing file string is not specified in the command, the backing
file string to use is determined in the same manner as it was
previously.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoblock: add helper function to determine if a BDS is in a chain
Jeff Cody [Wed, 25 Jun 2014 19:40:09 +0000 (15:40 -0400)]
block: add helper function to determine if a BDS is in a chain

This is a small helper function, to determine if 'base' is in the
chain of BlockDriverState 'top'.  It returns true if it is in the chain,
and false otherwise.

If either argument is NULL, it will also return false.

Reviewed-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoblock: add QAPI command to allow live backing file change
Jeff Cody [Tue, 1 Jul 2014 07:52:16 +0000 (09:52 +0200)]
block: add QAPI command to allow live backing file change

This allows a user to make a live change to the backing file recorded in
an open image.

The image file to modify can be specified 2 ways:

1) image filename
2) image node-name

Note: this does not cause the backing file itself to be reopened; it
merely changes the backing filename in the image file structure, and
in internal BDS structures.

It is the responsibility of the user to pass a filename string that
can be resolved when the image chain is reopened, and the filename
string is not validated.

A good analogy for this command is that it is a live version of
'qemu-img rebase -u', with respect to changing the backing file string.

[Jeff is offline so I respun this patch in his absence.  Dropped image
filename since using node-name is preferred and this is a new command.
No need to introduce the limitations of finding images by filename.
--Stefan]

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoconfigure: Fix -lm test, so that tools can be compiled on hosts that require -lm
Alexey Kardashevskiy [Tue, 1 Jul 2014 07:30:27 +0000 (17:30 +1000)]
configure: Fix -lm test, so that tools can be compiled on hosts that require -lm

The existing test whether "-lm" needs to be included or not is
insufficient as it reports false negative on Fedora20/ppc64.
This happens because sin(0.0) is a constant value which compiler
can safely throw away and therefore there is no need to add "-lm".
As the result, qemu-nbd/qemu-io/qemu-img tools cannot compile.

This adds a global variable and uses it in the test to prevent
from optimization.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
[Use Peter's improvement on the test to fool LTO, and remove the
 now useless -lm addition in Makefile.target. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoqdev: correctly send DEVICE_DELETED for recursively-deleted devices
Paolo Bonzini [Thu, 26 Jun 2014 13:10:03 +0000 (15:10 +0200)]
qdev: correctly send DEVICE_DELETED for recursively-deleted devices

When a device is unparented (i.e. made completely hidden from management)
we want to send a DEVICE_DELETED event only if the device actually was
realized.  This avoids raising DEVICE_DELETED events when device_add
fails.

However, this does not work right for recursively-deleted
devices: the whole tree is _first_ unrealized, _then_ unparented.
Then device_unparent sees realized==false and fails to trigger
the event.  The solution is simply to move have_realized into
the DeviceState struct.  If device_add fails, we never set the
new field to true and DEVICE_DELETED is not sent.

Fixes qemu-iotests testcase 067 (broken by commit 5942a19, though that
commit in turn fixed a possible segfault in the same test).

Reported-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agomemory: do not give a name to the internal exec.c regions
Paolo Bonzini [Fri, 13 Jun 2014 08:48:06 +0000 (10:48 +0200)]
memory: do not give a name to the internal exec.c regions

There is no need to have them visible under /machine.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agomemory: MemoryRegion: Add size property
Peter Crosthwaite [Fri, 6 Jun 2014 06:17:35 +0000 (23:17 -0700)]
memory: MemoryRegion: Add size property

To allow devices to dynamically resize the device. The motivation is
to allow devices with variable size to init their memory_region
without size early and then correctly populate size at realize() time.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agomemory: MemoryRegion: Add may-overlap and priority props
Peter Crosthwaite [Fri, 6 Jun 2014 06:17:01 +0000 (23:17 -0700)]
memory: MemoryRegion: Add may-overlap and priority props

QOM propertyify the .may-overlap and .priority fields. The setters
will re-add the memory as a subregion if needed (i.e. the values change
when the memory region is already contained).

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
[Remove setters. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agomemory: MemoryRegion: Add container and addr props
Peter Crosthwaite [Fri, 6 Jun 2014 06:16:27 +0000 (23:16 -0700)]
memory: MemoryRegion: Add container and addr props

Expose the already existing .parent and .addr fields as QOM properties.
.parent (i.e. the field describing the memory region that contains this
one in Memory hierachy) is renamed "container". This is to avoid
confusion with the QOM parent.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
[Remove setters.  Do not unref parent on releasing the property. Clean
 up error propagation. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agomemory: MemoryRegion: replace owner field with QOM parent
Paolo Bonzini [Wed, 11 Jun 2014 08:58:06 +0000 (10:58 +0200)]
memory: MemoryRegion: replace owner field with QOM parent

The two are now the same.

Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agomemory: MemoryRegion: QOMify
Peter Crosthwaite [Fri, 6 Jun 2014 06:15:52 +0000 (23:15 -0700)]
memory: MemoryRegion: QOMify

QOMify memory regions as an Object. The former init() and destroy()
routines become instance_init() and instance_finalize() resp.

memory_region_init() is re-implemented to be:
object_initialize() + set fields

memory_region_destroy() is re-implemented to call unparent().

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
[Add newly-created MR as child, unparent on destruction. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agomemory: MemoryRegion: use /machine as default owner
Paolo Bonzini [Wed, 11 Jun 2014 08:52:32 +0000 (10:52 +0200)]
memory: MemoryRegion: use /machine as default owner

This will be added (after QOMification) as the QOM parent.

Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agolibqtest: escape strings in QMP commands, fix leak
Paolo Bonzini [Fri, 13 Jun 2014 07:35:18 +0000 (09:35 +0200)]
libqtest: escape strings in QMP commands, fix leak

libqtest is using g_strdup_printf to format QMP commands, but
this does not work if the argument strings need to be escaped.
Instead, use the fancy %-formatting functionality of QObject.
The only change required in tests is that strings have to be
formatted as %s, not '%s' or \"%s\".  Luckily this usage of
parameterized QMP commands is not that frequent.

The leak is in socket_sendf.  Since we are extracting the send
loop to a new function, fix it now.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoqom: object: Ignore refs/unrefs of NULL
Peter Crosthwaite [Fri, 6 Jun 2014 06:13:36 +0000 (23:13 -0700)]
qom: object: Ignore refs/unrefs of NULL

Just do nothing if passed NULL for a ref or unref. This avoids
call sites that manage a combination of NULL or non-NULL pointers
having to add iffery around every ref and unref.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoqom: object: remove parent pointer when unparenting
Peter Crosthwaite [Tue, 27 May 2014 00:39:51 +0000 (17:39 -0700)]
qom: object: remove parent pointer when unparenting

Certain parts of the QOM framework test this pointer to determine if
an object is parented. Nuke it when the object is unparented to allow
for reuse of an object after unparenting.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agomc146818rtc: add "rtc-time" link to "/machine/rtc"
Marcelo Tosatti [Wed, 4 Jun 2014 17:52:03 +0000 (14:52 -0300)]
mc146818rtc: add "rtc-time" link to "/machine/rtc"

Add a link to rtc under /machine providing a stable
location for management apps to query the value of the
time.  The link should be added by any object that sends
RTC_TIME_CHANGE events.

{"execute":"qom-get","arguments":{"path":"/machine","property":"rtc-time"} }

Suggested by Paolo Bonzini and Andreas Faerber.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoqom: allow creating an alias of a child<> property
Paolo Bonzini [Tue, 10 Jun 2014 09:17:35 +0000 (11:17 +0200)]
qom: allow creating an alias of a child<> property

Child properties must be unique.  Fix this problem by
turning their aliases into links.

The resolve function that forwards to the target property
does not have any knowledge of the target property's type,
so it works fine.

Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoqom: add a generic mechanism to resolve paths
Paolo Bonzini [Thu, 5 Jun 2014 11:11:51 +0000 (13:11 +0200)]
qom: add a generic mechanism to resolve paths

It may be desirable to have custom link<> properties that do more
than just store an object.  Even the addition of a "check"
function is not enough if setting the link has side effects
or if a non-standard reference counting is preferrable.

Avoid the assumption that the opaque field of a link<> is a
LinkProperty struct, by adding a generic "resolve" callback
to ObjectProperty.  This fixes aliases of link properties.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoqapi: Change back sector-count to sectors-count in quorum QAPI events.
Benoît Canet [Mon, 30 Jun 2014 15:05:41 +0000 (17:05 +0200)]
qapi: Change back sector-count to sectors-count in quorum QAPI events.

fe069d9d had aligned code and documentation while dropping the s from the
actual JSON output. Fix that.

This also fix test/qemu-iotest/081 since the missing s was causing a permutation.

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoblock/cow: Avoid use of uninitialized cow_bs in error path
Peter Maydell [Mon, 30 Jun 2014 18:03:37 +0000 (19:03 +0100)]
block/cow: Avoid use of uninitialized cow_bs in error path

Commit 25814e8987 introduced an error-exit code path which does
a "goto exit" before the cow_bs variable is initialized, meaning
we would call bdrv_unref() on an uninitialized variable and
likely segfault. Fix this by moving the NULL-initialization
to the top of the function and making the exit code path handle
the case where it is NULL.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoblock: simplify bdrv_find_base() and bdrv_find_overlay()
Jeff Cody [Wed, 25 Jun 2014 19:35:26 +0000 (15:35 -0400)]
block: simplify bdrv_find_base() and bdrv_find_overlay()

This simplifies the function bdrv_find_overlay().  With this change,
bdrv_find_base() is just a subset of usage of bdrv_find_overlay(),
so this also takes advantage of that.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoblock: make 'top' argument to block-commit optional
Jeff Cody [Mon, 30 Jun 2014 13:14:15 +0000 (15:14 +0200)]
block: make 'top' argument to block-commit optional

Now that active layer block-commit is supported, the 'top' argument
no longer needs to be mandatory.

Change it to optional, with the default being the active layer in the
device chain.

[kwolf: Rebased and resolved conflict in tests/qemu-iotests/040]

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoiotests: Add more tests to quick group
Max Reitz [Fri, 27 Jun 2014 20:47:48 +0000 (22:47 +0200)]
iotests: Add more tests to quick group

While at it, add some more tests to the quick group (those that run with
-nocache in under three seconds on my HDD).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoiotests: Add qemu tests to quick group
Max Reitz [Fri, 27 Jun 2014 20:47:47 +0000 (22:47 +0200)]
iotests: Add qemu tests to quick group

Now that qemu-iotests-quick.sh supports tests using the qemu binary, we
are free to add such tests to the quick group.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoiotests: Simplify qemu-iotests-quick.sh
Max Reitz [Fri, 27 Jun 2014 20:47:46 +0000 (22:47 +0200)]
iotests: Simplify qemu-iotests-quick.sh

As of the "iotests: Allow out-of-tree run" series, the qemu-iotests may
(and should) be run directly in the build tree and will then guess the
binary paths themselves. Therefore, qemu-iotests-quick.sh does not need
to (and should not) enter the source path anymore; also, it does not
need to specify the binaries because "check" will guess them
automatically.

As a side-effect, tests using qemu may now be added to the quick group.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoqemu-img create: add 'nocow' option
Chunyan Liu [Mon, 30 Jun 2014 06:29:58 +0000 (14:29 +0800)]
qemu-img create: add 'nocow' option

Add 'nocow' option so that users could have a chance to set NOCOW flag to
newly created files. It's useful on btrfs file system to enhance performance.

Btrfs has low performance when hosting VM images, even more when the guest
in those VM are also using btrfs as file system. One way to mitigate this bad
performance is to turn off COW attributes on VM files. Generally, there are
two ways to turn off NOCOW on btrfs: a) by mounting fs with nodatacow, then
all newly created files will be NOCOW. b) per file. Add the NOCOW file
attribute. It could only be done to empty or new files.

This patch tries the second way, according to the option, it could add NOCOW
per file.

For most block drivers, since the create file step is in raw-posix.c, so we
can do setting NOCOW flag ioctl in raw-posix.c only.

But there are some exceptions, like block/vpc.c and block/vdi.c, they are
creating file by calling qemu_open directly. For them, do the same setting
NOCOW flag ioctl work in them separately.

[Fixed up 082.out due to the new 'nocow' creation option
--Stefan]

Signed-off-by: Chunyan Liu <cyliu@suse.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agovirtio-scsi: scsi events must be converted to target endianness
Cédric Le Goater [Mon, 30 Jun 2014 15:17:17 +0000 (17:17 +0200)]
virtio-scsi: scsi events must be converted to target endianness

Virtio SCSI Events need to be byteswapped before being pushed
when host and guest have a different endianness. Not doing so
breaks hotplug of virtio scsi disks, with the following error
message being printed in the guest console:

virtio_scsi: Unsupport virtio scsi event 1000000

This issue got uncovered while testing disk hotplug with a PowerKVM
ppc64le guest. I have checked that this issue also affects a x86_64
guest run on a ppc64 host.

Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
[ Ported from PowerKVM,
  Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agovirtio-scsi: virtio_scsi_push_event() lacks VirtIOSCSIReq parsing
Greg Kurz [Mon, 30 Jun 2014 15:33:18 +0000 (17:33 +0200)]
virtio-scsi: virtio_scsi_push_event() lacks VirtIOSCSIReq parsing

Hotplug of a virtio scsi disk is currently broken: no disk appears in the
guest (verified with a fedora 20 host running a fedora 20 guest with KVM).
Bisect leeds to Paolo's patches to support any_layout, especially this
commit:

commit 36b15c79aa1bef5fe7543f9f2629b6413720bbfb
Author: Paolo Bonzini <pbonzini@redhat.com>
Date:   Tue Jun 10 16:21:18 2014 +0200

    virtio-scsi: start preparing for any_layout

It modifies virtio_scsi_pop_req() so that it is up to the callers to parse
the virtio scsi request. It seems that virtio_scsi_push_event() was not
modified accordingly...

This patch adds a call to virtio_scsi_parse_req(). It also drops some
sanity checks that are already performed by virtio_scsi_parse_req().

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoqom: add object_property_add_alias()
Stefan Hajnoczi [Wed, 18 Jun 2014 09:58:28 +0000 (17:58 +0800)]
qom: add object_property_add_alias()

Sometimes an object needs to present a property which is actually on
another object, or it needs to provide an alias name for an existing
property.

Examples:
  a.foo -> b.foo
  a.old_name -> a.new_name

The new object_property_add_alias() API allows objects to alias a
property on the same object or another object.  The source and target
names can be different.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agovirtio-blk: remove need for explicit x-data-plane=on option
Stefan Hajnoczi [Tue, 10 Jun 2014 07:03:22 +0000 (09:03 +0200)]
virtio-blk: remove need for explicit x-data-plane=on option

The x-data-plane=on|off option is no longer useful because the
iothread=<iothread> option conveys the same information plus which
IOThread to use.

Do not delete x-data-plane=on|off yet as a convenience to people using
this legacy experimental option.  We will drop it in QEMU 2.2.

Instead, turn on data-plane when either x-data-plane=on or
iothread=<iothread> are used.  The following command-line uses
data-plane:

  qemu -device virtio-blk-pci,iothread=foo,drive=drive0

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agoqdev: drop iothread property type
Stefan Hajnoczi [Tue, 10 Jun 2014 07:03:21 +0000 (09:03 +0200)]
qdev: drop iothread property type

The iothread property type is no longer used and can be removed.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agovirtio-blk: replace x-iothread with iothread link property
Stefan Hajnoczi [Tue, 10 Jun 2014 07:03:20 +0000 (09:03 +0200)]
virtio-blk: replace x-iothread with iothread link property

Up until now -device virtio-blk-pci,x-iothread=<id> was used to assign
an IOThread.  This was a temporary solution while we cleaned up QOM link
properties.

This patch switches over to a QOM link property since it is now possible
to restrict the setter to unrealized instances and automatically unref
the IOThread when the virtio-blk-pci device is freed.

Since the "iothread" property is a QOM property and not a qdev property,
we must alias it explicitly for virtio-blk-pci, as well as CCW and
s390-virtio.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agovirtio-blk: move qdev properties into virtio-blk.c
Stefan Hajnoczi [Wed, 18 Jun 2014 09:58:36 +0000 (17:58 +0800)]
virtio-blk: move qdev properties into virtio-blk.c

There is no need to make DEFINE_VIRTIO_BLK_PROPERTIES() public.  Inline
it into virtio-blk.c so it cannot be used by mistake from other source
files.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agovirtio: fix virtio-blk child refcount in transports
Stefan Hajnoczi [Wed, 18 Jun 2014 09:58:35 +0000 (17:58 +0800)]
virtio: fix virtio-blk child refcount in transports

object_initialize() leaves the object with a refcount of 1.
object_property_add_child() adds its own reference which is dropped
again when the property is deleted.

The upshot of this is that we always have a refcount >= 1.  Upon hot
unplug the virtio-blk child is not finalized!

Drop our reference after the child property has been added to the
parent.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agovirtio-blk: drop virtio_blk_set_conf()
Stefan Hajnoczi [Wed, 18 Jun 2014 09:58:34 +0000 (17:58 +0800)]
virtio-blk: drop virtio_blk_set_conf()

This function is no longer used since parent objects now use child
aliases to set the VirtIOBlkConf directly.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agovirtio-blk: use aliases instead of duplicate qdev properties
Stefan Hajnoczi [Wed, 18 Jun 2014 09:58:33 +0000 (17:58 +0800)]
virtio-blk: use aliases instead of duplicate qdev properties

virtio-blk-pci, virtio-blk-s390, and virtio-blk-ccw all duplicate the
qdev properties of their VirtIOBlock child.  This approach does not work
well with string or pointer properties since we must be careful about
leaking or double-freeing them.

Use the QOM alias property to forward property accesses to the
VirtIOBlock child.  This way no duplication is necessary.

Remember to stop calling virtio_blk_set_conf() so that we don't clobber
the values already set on the VirtIOBlock instance.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agoqdev: add qdev_alias_all_properties()
Stefan Hajnoczi [Wed, 18 Jun 2014 09:58:32 +0000 (17:58 +0800)]
qdev: add qdev_alias_all_properties()

The qdev_alias_all_properties() function creates QOM alias properties
for each qdev property on a DeviceState.  This is useful for parent
objects that wish to forward property accesses to their children.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agovirtio-blk: move x-data-plane qdev property to virtio-blk.h
Stefan Hajnoczi [Wed, 18 Jun 2014 09:58:31 +0000 (17:58 +0800)]
virtio-blk: move x-data-plane qdev property to virtio-blk.h

Move the x-data-plane property.  Originally it was outside since not
every transport may wish to support dataplane.  But that makes little
sense when we have a dedicated CONFIG_VIRTIO_BLK_DATA_PLANE ifdef
already.

This move makes it easier to switch to property aliases in the next
patch.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agodataplane: bail out on unsupported transport
Cornelia Huck [Wed, 18 Jun 2014 09:58:30 +0000 (17:58 +0800)]
dataplane: bail out on unsupported transport

If the virtio transport does not support notifiers (like s390-virtio),
we can't use dataplane. Bail out early and let the user know what is
wrong.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
10 years agovirtio-blk: avoid qdev property definition duplication
Stefan Hajnoczi [Wed, 18 Jun 2014 09:58:29 +0000 (17:58 +0800)]
virtio-blk: avoid qdev property definition duplication

It becomes unwiedly to duplicate all virtio-blk qdev property
definitions due to an #ifdef.  The C preprocessor syntax makes it a
little hard to resolve this cleanly but we can extract the #ifdef and
call a macro it defines later.

Avoiding duplication is important since it will only get worse when we
move the x-data-plane qdev property here too.  We'd have a combinatorial
explosion since x-data-plane has its own #ifdef.

Suggested-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agoirq: Slim conversion of qemu_irq to QOM
Andreas Färber [Wed, 18 Jun 2014 07:57:08 +0000 (00:57 -0700)]
irq: Slim conversion of qemu_irq to QOM

As a prequel to any big Pin refactoring plans, do an in-place conversion
of qemu_irq to an Object, so that we can reference it in link<> properties.

Signed-off-by: Andreas Färber <afaerber@suse.de>
[ PC Changes:
 * Removed array-alloctor ref counting logic (limit changes just to
 * single IRQ allocator)
 * Removed WIP marking from subject line
]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
10 years agoirq: Allocate IRQs individually
Peter Crosthwaite [Wed, 18 Jun 2014 07:56:31 +0000 (00:56 -0700)]
irq: Allocate IRQs individually

Allocate each IRQ individually on array allocations. This prepares for
QOMification of IRQs, where pointers to individual IRQs may be taken
and handed around for usage as QOM Links. The g_renew() scheme used here
is too fragile and would break all existing links should an IRQ list
be extended.

We now have to pass the IRQ count to qemu_free_irqs(). We have so few
call sites however, so this change is reasonably trivial.

Cc: agarcia@igalia.com
Cc: mst@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alberto Garcia <agarcia@igalia.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
10 years agohw: Fix qemu_allocate_irqs() leaks
Andreas Färber [Wed, 18 Jun 2014 07:55:18 +0000 (00:55 -0700)]
hw: Fix qemu_allocate_irqs() leaks

Replace qemu_allocate_irqs(foo, bar, 1)[0]
with qemu_allocate_irq(foo, bar, 0).

This avoids leaking the dereferenced qemu_irq *.

Cc: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
[PC Changes:
 * Applied change to instance in sh4/sh7750.c
]
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Kirill Batuzov <batuzovk@ispras.ru>
[AF: Fix IRQ index in sh4/sh7750.c]
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
10 years agosdhci: Fix misuse of qemu_free_irqs()
Andreas Färber [Tue, 13 May 2014 09:39:42 +0000 (11:39 +0200)]
sdhci: Fix misuse of qemu_free_irqs()

It does a g_free() on the pointer, so don't pass a local &foo reference.

Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
10 years agoqom: Remove parent pointer when unparenting
Peter Crosthwaite [Tue, 27 May 2014 00:39:51 +0000 (17:39 -0700)]
qom: Remove parent pointer when unparenting

Certain parts of the QOM framework test this pointer to determine if
an object is parented. Nuke it when the object is unparented to allow
for reuse of an object after unparenting.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
10 years agoMerge remote-tracking branch 'remotes/awilliam/tags/vfio-pci-for-qemu-20140630.0...
Peter Maydell [Mon, 30 Jun 2014 17:31:07 +0000 (18:31 +0100)]
Merge remote-tracking branch 'remotes/awilliam/tags/vfio-pci-for-qemu-20140630.0' into staging

VFIO patches: MSI-X masking performance fix, Endian fixes, fix runstate on device error

# gpg: Signature made Mon 30 Jun 2014 18:13:40 BST using RSA key ID 3BB08B22
# gpg: Can't check signature: public key not found

* remotes/awilliam/tags/vfio-pci-for-qemu-20140630.0:
  vfio: use correct runstate
  vfio: Make BARs native endian
  vfio-pci: Fix MSI-X masking performance
  vfio-pci: Fix MSI/X debug code

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agovfio: use correct runstate
Paolo Bonzini [Mon, 30 Jun 2014 15:56:08 +0000 (09:56 -0600)]
vfio: use correct runstate

io-error is for block device errors; it should always be preceded
by a BLOCK_IO_ERROR event.  I think vfio wants to use
RUN_STATE_INTERNAL_ERROR instead.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
10 years agovfio: Make BARs native endian
Alexey Kardashevskiy [Mon, 30 Jun 2014 15:52:58 +0000 (09:52 -0600)]
vfio: Make BARs native endian

Slow BAR access path is used when VFIO fails to mmap() BAR.
Since this is just a transport between the guest and a device, there is
no need to do endianness swapping.

This changes BARs to use native endianness. Since non-ROM BARs were
doing byte swapping, we need to remove it so does the patch.
As the result, this eliminates cancelling byte swaps and there is
no change in behavior for non-ROM BARs.

ROM BARs were declared little endian too but byte swapping was not
implemented for them so they never actually worked on big endian systems
as there was no cancelling byte swap. This fixes endiannes for ROM BARs
by declaring them native endian and only fixing access sizes as it is
done for non-ROM BARs.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
10 years agovfio-pci: Fix MSI-X masking performance
Alex Williamson [Mon, 30 Jun 2014 15:50:33 +0000 (09:50 -0600)]
vfio-pci: Fix MSI-X masking performance

There are still old guests out there that over-exercise MSI-X masking.
The current code completely sets-up and tears-down an MSI-X vector on
the "use" and "release" callbacks.  While this is functional, it can
slow an old guest to a crawl.  We can easily skip the KVM parts of
this so that we keep the MSI route and irqfd setup.  We do however
need to switch VFIO to trigger a different eventfd while masked.
Actually, we have the option of continuing to use -1 to disable the
trigger, but by using another EventNotifier we can allow the MSI-X
core to emulate pending bits and re-fire the vector once unmasked.
MSI code gets updated as well to use the same setup and teardown
structures and functions.

Prior to this change, an igbvf assigned to a RHEL5 guest gets about
20Mbps and 50 transactions/s with netperf (remote or VF->PF).  With
this change, we get line rate and 3k transactions/s remote or 2Gbps
and 6k+ transactions/s to the PF.  No significant change is expected
for newer guests with more well behaved MSI-X support.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
10 years agovfio-pci: Fix MSI/X debug code
Alex Williamson [Mon, 30 Jun 2014 15:50:33 +0000 (09:50 -0600)]
vfio-pci: Fix MSI/X debug code

Use the correct MSI message function for debug info.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
10 years agoMerge remote-tracking branch 'remotes/bonzini/nbd-next' into staging
Peter Maydell [Mon, 30 Jun 2014 15:13:32 +0000 (16:13 +0100)]
Merge remote-tracking branch 'remotes/bonzini/nbd-next' into staging

* remotes/bonzini/nbd-next:
  nbd: Handle NBD_OPT_LIST option.
  nbd: Handle fixed new-style clients.
  nbd: Shutdown socket before closing.
  nbd: Don't validate from and len in NBD_CMD_DISC.
  nbd: Don't export a block device with no medium.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agoMerge remote-tracking branch 'remotes/bonzini/small-fixes' into staging
Peter Maydell [Mon, 30 Jun 2014 14:56:00 +0000 (15:56 +0100)]
Merge remote-tracking branch 'remotes/bonzini/small-fixes' into staging

* remotes/bonzini/small-fixes:
  tests/test-qmp-event: fix for GLib < 2.31
  serial: poll the serial console with G_IO_HUP

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agoMerge remote-tracking branch 'remotes/pmaydell/tags/pull-cocoa-20140630' into staging
Peter Maydell [Mon, 30 Jun 2014 14:42:35 +0000 (15:42 +0100)]
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-cocoa-20140630' into staging

cocoa.next:
 * Honour -show-cursor option
 * Fix handling of absolute positioning devices
 * Cope with first surface being same as initial window size

# gpg: Signature made Mon 30 Jun 2014 13:48:46 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"

* remotes/pmaydell/tags/pull-cocoa-20140630:
  ui/cocoa: Honour -show-cursor command line option
  ui/cocoa: Fix handling of absolute positioning devices
  ui/cocoa: Add utility method to check if point is within window
  ui/cocoa: Cope with first surface being same as initial window size

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agoMerge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20140630' into...
Peter Maydell [Mon, 30 Jun 2014 14:16:25 +0000 (15:16 +0100)]
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20140630' into staging

target-arm:
 * provide PL031 RTC in virt board
 * fix missing pxa2xx and strongarm vmstate
 * convert cadence_ttc to instance_init
 * fix libvixl format strings and README

# gpg: Signature made Mon 30 Jun 2014 13:44:33 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"

* remotes/pmaydell/tags/pull-target-arm-20140630:
  disas/libvixl: Fix wrong format strings
  disas/libvixl: Update README for version base
  timer: cadence_ttc: Convert to instance_init
  hw/arm/pxa2xx_gpio: Correct and register vmstate
  hw/arm/pxa2xx_gpio: Fix handling of GPSR/GPCR reads
  hw/arm/strongarm: Wire up missing GPIO and PPC vmstate
  hw/arm/strongarm: Fix handling of GPSR/GPCR reads
  hw/arm/virt: Provide PL031 RTC

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agotests/test-qmp-event: fix for GLib < 2.31
Paolo Bonzini [Mon, 30 Jun 2014 13:05:49 +0000 (15:05 +0200)]
tests/test-qmp-event: fix for GLib < 2.31

On old GLib, the test needs a g_thread_init call.

Reported-by: Wenchao Xia <wenchaoqemu@gmail.com>
Tested-by: Wenchao Xia <wenchaoqemu@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agoserial: poll the serial console with G_IO_HUP
Roger Pau Monne [Fri, 23 May 2014 15:57:49 +0000 (17:57 +0200)]
serial: poll the serial console with G_IO_HUP

On FreeBSD polling a master pty while the other end is not connected
with G_IO_OUT only results in an endless wait. This is different from
the Linux behaviour, that returns immediately. In order to demonstrate
this, I have the following example code:

http://xenbits.xen.org/people/royger/test_poll.c

When executed on Linux:

$ ./test_poll
In callback

On FreeBSD instead, the callback never gets called:

$ ./test_poll

So, in order to workaround this, poll the source with G_IO_HUP (which
makes the code behave the same way on both Linux and FreeBSD).

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: Michael Tokarev <mjt@tls.msk.ru>
Cc: "Andreas Färber" <afaerber@suse.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: xen-devel@lists.xenproject.org
[Add hw/char/cadence_uart.c too. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agonbd: Handle NBD_OPT_LIST option.
Hani Benhabiles [Sat, 7 Jun 2014 00:32:32 +0000 (01:32 +0100)]
nbd: Handle NBD_OPT_LIST option.

Signed-off-by: Hani Benhabiles <kroosec@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agonbd: Handle fixed new-style clients.
Hani Benhabiles [Sat, 7 Jun 2014 00:32:31 +0000 (01:32 +0100)]
nbd: Handle fixed new-style clients.

When this flag is set, the server tells the client that it can send another
option if the server received a request with an option that it doesn't
understand instead of directly closing the connection.

Also add link to the most up-to-date documentation.

Signed-off-by: Hani Benhabiles <kroosec@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agonbd: Shutdown socket before closing.
Hani Benhabiles [Sat, 31 May 2014 21:39:42 +0000 (22:39 +0100)]
nbd: Shutdown socket before closing.

This forces finishing data sending to client before closing the socket like in
exports listing or replying with NBD_REP_ERR_UNSUP cases.

Signed-off-by: Hani Benhabiles <kroosec@gmail.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
10 years agodisas/libvixl: Fix wrong format strings
Stefan Weil [Wed, 18 Jun 2014 17:49:11 +0000 (19:49 +0200)]
disas/libvixl: Fix wrong format strings

When the compiler is told to check the arguments of AppendToOutput,
it reports several errors of this kind:

error: format ‘%d’ expects argument of type ‘int’,
 but argument 3 has type ‘int64_t {aka long int}’ [-Werror=format]

Fix those bugs by using the correct format strings with PRId64, PRIx64.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Message-id: 1403113751-19799-1-git-send-email-sw@weilnetz.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agodisas/libvixl: Update README for version base
Richard Henderson [Tue, 27 May 2014 20:43:48 +0000 (13:43 -0700)]
disas/libvixl: Update README for version base

Signed-off-by: Richard Henderson <rth@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agoui/cocoa: Honour -show-cursor command line option
Peter Maydell [Mon, 23 Jun 2014 09:35:25 +0000 (10:35 +0100)]
ui/cocoa: Honour -show-cursor command line option

Honour the -show-cursor command line option (which forces the mouse pointer
to always be displayed even when input is grabbed) in the Cocoa UI backend.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1403516125-14568-5-git-send-email-peter.maydell@linaro.org

10 years agoui/cocoa: Fix handling of absolute positioning devices
Peter Maydell [Mon, 23 Jun 2014 09:35:24 +0000 (10:35 +0100)]
ui/cocoa: Fix handling of absolute positioning devices

Fix handling of absolute positioning devices, which were basically
unusable for two separate reasons:
 (1) as soon as you pressed the left mouse button we would call
     CGAssociateMouseAndMouseCursorPosition(FALSE), which means that
     the absolute coordinates of the mouse events are never updated
 (2) we didn't account for MacOSX coordinate origin being bottom left
     rather than top right, and so all the Y values sent to the guest
     were inverted

We fix (1) by aligning our behaviour with the SDL UI backend for
absolute devices:
 * when the mouse moves into the window we do a grab (which means
   hiding the host cursor and sending special keys to the guest)
 * when the mouse moves out of the window we un-grab
and fix (2) by doing the correct transformation in the call to
qemu_input_queue_abs().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1403516125-14568-4-git-send-email-peter.maydell@linaro.org

10 years agoui/cocoa: Add utility method to check if point is within window
Peter Maydell [Mon, 23 Jun 2014 09:35:23 +0000 (10:35 +0100)]
ui/cocoa: Add utility method to check if point is within window

Add a utility method to check whether a point is within the current window
bounds, and use it in the various places in the mouse handling code that
were opencoding the check.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1403516125-14568-3-git-send-email-peter.maydell@linaro.org

10 years agoui/cocoa: Cope with first surface being same as initial window size
Peter Maydell [Mon, 23 Jun 2014 09:35:22 +0000 (10:35 +0100)]
ui/cocoa: Cope with first surface being same as initial window size

Do the recalculation of the content dimensions in switchSurface if the
current cdx is zero as well as if the new surface is a different size to
the current window. This catches the case where the first surface registered
happens to be 640x480 (our current window size), and fixes a bug where we
would always display a black screen until the first surface of a different
size was registered.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1403516125-14568-2-git-send-email-peter.maydell@linaro.org

10 years agotimer: cadence_ttc: Convert to instance_init
Alistair Francis [Sun, 29 Jun 2014 17:38:40 +0000 (18:38 +0100)]
timer: cadence_ttc: Convert to instance_init

SysBusDevice::init is deprecated. Convert to instance_init
as prescribed by QOM conventions.

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1223f14833159b9ea5c57734dd2ffa88d4b15a83.1403583596.git.alistair.francis@xilinx.com
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agohw/arm/pxa2xx_gpio: Correct and register vmstate
Peter Maydell [Sun, 29 Jun 2014 17:38:40 +0000 (18:38 +0100)]
hw/arm/pxa2xx_gpio: Correct and register vmstate

The pxa2xx-gpio device has a VMStateDescription, but it was accidentally
never actually registered, and it wasn't quite correct. Remove the
'lines' field (this is a device property, not mutable state), add the
missing 'prev_level' field, and set dc->vmsd so it actually gets used.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agohw/arm/pxa2xx_gpio: Fix handling of GPSR/GPCR reads
Peter Maydell [Sun, 29 Jun 2014 17:38:40 +0000 (18:38 +0100)]
hw/arm/pxa2xx_gpio: Fix handling of GPSR/GPCR reads

The PXA2xx GPIO GPSR and GPCR registers are write-only, with reads being
undefined behaviour. Instead of having GPCR return 31337 and GPSR return
the value last written, make both log the guest error and return 0.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agohw/arm/strongarm: Wire up missing GPIO and PPC vmstate
Peter Maydell [Sun, 29 Jun 2014 17:38:39 +0000 (18:38 +0100)]
hw/arm/strongarm: Wire up missing GPIO and PPC vmstate

The VMStateDescription structs for the GPIO and PPC devices were
accidentally never wired up. Add missing state fields and register
them via dc->vmsd.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agohw/arm/strongarm: Fix handling of GPSR/GPCR reads
Peter Maydell [Sun, 29 Jun 2014 17:38:39 +0000 (18:38 +0100)]
hw/arm/strongarm: Fix handling of GPSR/GPCR reads

The StrongARM GPIO GPSR and GPCR registers are write-only, with reads being
undefined behaviour. Instead of having GPCR return 31337 and GPSR return
the value last written, make both log the guest error and return 0.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
10 years agohw/arm/virt: Provide PL031 RTC
Peter Maydell [Sun, 29 Jun 2014 17:38:39 +0000 (18:38 +0100)]
hw/arm/virt: Provide PL031 RTC

UEFI mandates that the platform must include an RTC, so provide
one in 'virt', using the PL031. This is also useful for directly
booting Linux kernels which would otherwise have to run ntpdate.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
10 years agoMerge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
Peter Maydell [Sun, 29 Jun 2014 17:09:51 +0000 (18:09 +0100)]
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc,vhost,virtio fixes, enhancements

virtio bi-endian support
new command to resync RTC
misc bugfixes and cleanups

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Sun 29 Jun 2014 17:41:13 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"

* remotes/mst/tags/for_upstream: (37 commits)
  tests: add human format test for string output visitor
  vhost-net: disable when cross-endian
  target-ppc: enable virtio endian ambivalent support
  virtio-9p: use virtio wrappers to access headers
  virtio-serial-bus: use virtio wrappers to access headers
  virtio-scsi: use virtio wrappers to access headers
  virtio-blk: use virtio wrappers to access headers
  virtio-balloon: use virtio wrappers to access page frame numbers
  virtio-net: use virtio wrappers to access headers
  virtio: allow byte swapping for vring
  virtio: memory accessors for endian-ambivalent targets
  virtio: add endian-ambivalent support to VirtIODevice
  cpu: introduce CPUClass::virtio_is_big_endian()
  exec: introduce target_words_bigendian() helper
  virtio: add subsections to the migration stream
  virtio-rng: implement per-device migration calls
  virtio-balloon: implement per-device migration calls
  virtio-serial: implement per-device migration calls
  virtio-blk: implement per-device migration calls
  virtio-net: implement per-device migration calls
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
10 years agotests: add human format test for string output visitor
Hu Tao [Fri, 20 Jun 2014 05:55:43 +0000 (13:55 +0800)]
tests: add human format test for string output visitor

Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovhost-net: disable when cross-endian
Greg Kurz [Tue, 24 Jun 2014 17:55:03 +0000 (19:55 +0200)]
vhost-net: disable when cross-endian

As of today, vhost assumes guest and host have the same endianness.
This is definitely not compatible with modern PPC64 and ARM that
can change endianness at runtime. Let's disable vhost-net and print
an error message when we detect such a case:

qemu-system-ppc64: vhost-net does not support cross-endian
qemu-system-ppc64: unable to start vhost net: 38: falling back on userspace virtio

This way users can continue to run VMs without changing their setup and
have a chance to know that performance will be impacted.

Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agotarget-ppc: enable virtio endian ambivalent support
Greg Kurz [Tue, 24 Jun 2014 17:51:19 +0000 (19:51 +0200)]
target-ppc: enable virtio endian ambivalent support

The device endianness is the cpu endianness at device reset time.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-9p: use virtio wrappers to access headers
Greg Kurz [Tue, 24 Jun 2014 17:49:49 +0000 (19:49 +0200)]
virtio-9p: use virtio wrappers to access headers

Note that st*_raw and ld*_raw are effectively replaced by st*_p and ld*_p.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-serial-bus: use virtio wrappers to access headers
Rusty Russell [Tue, 24 Jun 2014 17:49:31 +0000 (19:49 +0200)]
virtio-serial-bus: use virtio wrappers to access headers

We also fix max_nr_ports at reset time as the device endianness may have
changed.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ pass VirtIODevice * to memory accessors,
  fix max_nr_ports at reset time,
  Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-scsi: use virtio wrappers to access headers
Rusty Russell [Tue, 24 Jun 2014 17:48:53 +0000 (19:48 +0200)]
virtio-scsi: use virtio wrappers to access headers

Note that st*_raw and ld*_raw are effectively replaced by st*_p and ld*_p.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ pass VirtIODevice * to memory accessors,
  converted new tswap locations to virtio_tswap,
  Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-blk: use virtio wrappers to access headers
Rusty Russell [Tue, 24 Jun 2014 17:43:44 +0000 (19:43 +0200)]
virtio-blk: use virtio wrappers to access headers

Note that st*_raw and ld*_raw are effectively replaced by st*_p and ld*_p.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ pass VirtIODevice * to memory accessors,
  Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-balloon: use virtio wrappers to access page frame numbers
Rusty Russell [Tue, 24 Jun 2014 17:43:22 +0000 (19:43 +0200)]
virtio-balloon: use virtio wrappers to access page frame numbers

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ pass VirtIODevice * to memory accessors,
  Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-net: use virtio wrappers to access headers
Rusty Russell [Tue, 24 Jun 2014 17:42:54 +0000 (19:42 +0200)]
virtio-net: use virtio wrappers to access headers

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ pass VirtIODevice * to memory accessors,
  converted new tswap locations to virtio_tswap,
  Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio: allow byte swapping for vring
Rusty Russell [Tue, 24 Jun 2014 17:40:16 +0000 (19:40 +0200)]
virtio: allow byte swapping for vring

Quoting original text from Rusty: "This is based on a simpler patch by Anthony
Liguouri".

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
[ add VirtIODevice * argument to most helpers,
  Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio: memory accessors for endian-ambivalent targets
Greg Kurz [Tue, 24 Jun 2014 17:39:55 +0000 (19:39 +0200)]
virtio: memory accessors for endian-ambivalent targets

This is the virtio-access.h header file taken from Rusty's "endian-ambivalent
targets using legacy virtio" patch. It introduces helpers that should be used
when accessing vring data or by drivers for data that contains headers.
The virtio config space is also target endian, but the current code already
handles that with the virtio_is_big_endian() helper. There is no obvious
benefit at using the virtio accessors in this case.

Now we have two distinct paths: a fast inline one for fixed endian targets,
and a slow out-of-line one for targets that define the new TARGET_IS_BIENDIAN
macro.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
[ relicensed virtio-access.h to GPLv2+ on Rusty's request,
  pass &address_space_memory to physical memory accessors,
  per-device endianness,
  virtio tswap16 and tswap64 helpers,
  faspath for fixed endian targets,
  Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Cc: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio: add endian-ambivalent support to VirtIODevice
Greg Kurz [Tue, 24 Jun 2014 17:38:54 +0000 (19:38 +0200)]
virtio: add endian-ambivalent support to VirtIODevice

Some CPU families can dynamically change their endianness. This means we
can have little endian ppc or big endian arm guests for example. This has
an impact on legacy virtio data structures since they are target endian.
We hence introduce a new property to track the endianness of each virtio
device. It is reasonnably assumed that endianness won't change while the
device is in use : we hence capture the device endianness when it gets
reset.

We migrate this property in a subsection, after the device descriptor. This
means the load code must not rely on it until it is restored. As a consequence,
the vring sanity checks had to be moved after the call to vmstate_load_state().
We enforce paranoia by poisoning the property at the begining of virtio_load().

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agocpu: introduce CPUClass::virtio_is_big_endian()
Greg Kurz [Tue, 24 Jun 2014 17:33:21 +0000 (19:33 +0200)]
cpu: introduce CPUClass::virtio_is_big_endian()

If we want to support targets that can change endianness (modern PPC and
ARM for the moment), we need to add a per-CPU class method to be called
from the virtio code. The virtio_ prefix in the name is a hint for people
to avoid misusage (aka. anywhere but from the virtio code).

The default behaviour is to return the compile-time default target
endianness.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agoexec: introduce target_words_bigendian() helper
Greg Kurz [Tue, 24 Jun 2014 17:26:29 +0000 (19:26 +0200)]
exec: introduce target_words_bigendian() helper

We currently have a virtio_is_big_endian() helper that provides the target
endianness to the virtio code. As of today, the helper returns a fixed
compile-time value. Of course, this will have to change if we want to
support target endianness changes at run-time.

Let's move the TARGET_WORDS_BIGENDIAN bits out to a new helper and have
virtio_is_big_endian() implemented on top of it.

This patch doesn't change any functionality.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio: add subsections to the migration stream
Greg Kurz [Tue, 24 Jun 2014 17:22:30 +0000 (19:22 +0200)]
virtio: add subsections to the migration stream

There is a need to add some more fields to VirtIODevice that should be
migrated (broken status, endianness). The problem is that we do not
want to break compatibility while adding a new feature... This issue has
been addressed in the generic VMState code with the use of optional
subsections. As a *temporary* alternative to port the whole virtio
migration code to VMState, this patch mimics a similar subsectionning
ability for virtio, using the VMState code.

Since each virtio device is streamed in its own section, the idea is to
stream subsections between the end of the device section and the start
of the next sections. This allows an older QEMU to complain and exit
when fed with subsections:

Unknown savevm section type 5
load of migration failed

Suggested-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-rng: implement per-device migration calls
Greg Kurz [Tue, 24 Jun 2014 17:20:23 +0000 (19:20 +0200)]
virtio-rng: implement per-device migration calls

While we are here, we also check virtio_load() return value.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-balloon: implement per-device migration calls
Greg Kurz [Tue, 24 Jun 2014 17:20:08 +0000 (19:20 +0200)]
virtio-balloon: implement per-device migration calls

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-serial: implement per-device migration calls
Greg Kurz [Tue, 24 Jun 2014 17:19:48 +0000 (19:19 +0200)]
virtio-serial: implement per-device migration calls

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-blk: implement per-device migration calls
Greg Kurz [Tue, 24 Jun 2014 17:19:23 +0000 (19:19 +0200)]
virtio-blk: implement per-device migration calls

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio-net: implement per-device migration calls
Greg Kurz [Tue, 24 Jun 2014 17:19:03 +0000 (19:19 +0200)]
virtio-net: implement per-device migration calls

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
10 years agovirtio: introduce device specific migration calls
Greg Kurz [Tue, 24 Jun 2014 17:15:31 +0000 (19:15 +0200)]
virtio: introduce device specific migration calls

In order to migrate virtio subsections, they should be streamed after
the device itself. We need the device specific code to be called from
the common migration code to achieve this. This patch introduces load
and save methods for this purpose.

Suggested-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>