]> git.ipfire.org Git - thirdparty/qemu.git/log
thirdparty/qemu.git
8 years agomigration: drop find_vmstate_bs check in hmp_delvm
Denis V. Lunev [Thu, 19 Nov 2015 06:42:07 +0000 (09:42 +0300)] 
migration: drop find_vmstate_bs check in hmp_delvm

There is no much sense to do the check and write warning.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Tested-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agosnapshot: create bdrv_all_find_snapshot helper
Denis V. Lunev [Thu, 19 Nov 2015 06:42:06 +0000 (09:42 +0300)] 
snapshot: create bdrv_all_find_snapshot helper

to check that snapshot is available for all loaded block drivers.
The check bs != bs1 in hmp_info_snapshots is an optimization. The check
for availability of this snapshot will return always true as the list
of snapshots was collected from that image.

The patch also ensures proper locking.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Tested-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agomigration: factor our snapshottability check in load_vmstate
Denis V. Lunev [Thu, 19 Nov 2015 06:42:05 +0000 (09:42 +0300)] 
migration: factor our snapshottability check in load_vmstate

We should check that all inserted and not read-only images support
snapshotting. This could be made using already invented helper
bdrv_all_can_snapshot().

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Tested-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agosnapshot: create bdrv_all_goto_snapshot helper
Denis V. Lunev [Thu, 19 Nov 2015 06:42:04 +0000 (09:42 +0300)] 
snapshot: create bdrv_all_goto_snapshot helper

to switch to snapshot on all loaded block drivers.

The patch also ensures proper locking.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Tested-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agosnapshot: create bdrv_all_delete_snapshot helper
Denis V. Lunev [Thu, 19 Nov 2015 06:42:03 +0000 (09:42 +0300)] 
snapshot: create bdrv_all_delete_snapshot helper

to delete snapshots from all loaded block drivers.

The patch also ensures proper locking.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Tested-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agosnapshot: return error code from bdrv_snapshot_delete_by_id_or_name
Denis V. Lunev [Thu, 19 Nov 2015 06:42:02 +0000 (09:42 +0300)] 
snapshot: return error code from bdrv_snapshot_delete_by_id_or_name

this will make code better in the next patch

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Tested-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agosnapshot: create helper to test that block drivers supports snapshots
Denis V. Lunev [Thu, 19 Nov 2015 06:42:01 +0000 (09:42 +0300)] 
snapshot: create helper to test that block drivers supports snapshots

The patch enforces proper locking for this operation.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Tested-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agoUnneeded NULL check
Dr. David Alan Gilbert [Wed, 18 Nov 2015 11:48:41 +0000 (11:48 +0000)] 
Unneeded NULL check

The check is unneccesary, we read the value at the start of the
thread, use it, and never change it.  The value is checked to be
non-NULL before thread creation.

Spotted by coverity, CID 1339211

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agomigration: Dead assignment of current_time
Dr. David Alan Gilbert [Wed, 18 Nov 2015 11:48:40 +0000 (11:48 +0000)] 
migration: Dead assignment of current_time

I set current_time before the postcopy test but never use it;
(I think this was from the original version where it was time based).
Spotted by coverity, CID 1339208

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agoSet last_sent_block
Dr. David Alan Gilbert [Wed, 18 Nov 2015 11:48:39 +0000 (11:48 +0000)] 
Set last_sent_block

In a82d593b61054b3dea43 I accidentally removed the setting of
last_sent_block,  put it back.

Symptoms:
  Multithreaded compression only uses one thread.
  Migration is a bit less efficient since it won't use 'cont' flags.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixes: a82d593b61054b3dea43
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Peter Maydell [Wed, 18 Nov 2015 17:07:24 +0000 (17:07 +0000)] 
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Wed 18 Nov 2015 15:28:32 GMT using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"

* remotes/kevin/tags/for-upstream:
  block: Call external_snapshot_clean after blockdev-snapshot
  blockdev: Add missing bdrv_unref() in drive-backup
  iotests: fix race in 030
  nand: fix address overflow

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/berrange/tags/qcrypto-fixes-20151118-1' into...
Peter Maydell [Wed, 18 Nov 2015 16:27:15 +0000 (16:27 +0000)] 
Merge remote-tracking branch 'remotes/berrange/tags/qcrypto-fixes-20151118-1' into staging

Pull qcrypto fixes 2015/11/18 v1

# gpg: Signature made Wed 18 Nov 2015 15:44:07 GMT using RSA key ID 15104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg:                 aka "Daniel P. Berrange <berrange@redhat.com>"

* remotes/berrange/tags/qcrypto-fixes-20151118-1:
  crypto: avoid passing NULL to access() syscall
  crypto: fix leaks in TLS x509 helper functions
  crypto: fix mistaken setting of Error in success code path
  crypto: fix leak of gnutls_dh_params_t data on credential unload

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agocrypto: avoid passing NULL to access() syscall
Daniel P. Berrange [Wed, 18 Nov 2015 15:42:26 +0000 (15:42 +0000)] 
crypto: avoid passing NULL to access() syscall

The qcrypto_tls_creds_x509_sanity_check() checks whether
certs exist by calling access(). It is valid for this
method to be invoked with certfile==NULL though, since
for client credentials the cert is optional. This caused
it to call access(NULL), which happens to be harmless on
current Linux, but should none the less be avoided.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
8 years agoMerge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2015-11-18' into queue...
Kevin Wolf [Wed, 18 Nov 2015 15:27:44 +0000 (16:27 +0100)] 
Merge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2015-11-18' into queue-block

One block patch for qemu 2.5-rc1.

# gpg: Signature made Wed Nov 18 16:26:59 2015 CET using RSA key ID E838ACAD
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"

* mreitz/tags/pull-block-for-kevin-2015-11-18:
  block: Call external_snapshot_clean after blockdev-snapshot

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: Call external_snapshot_clean after blockdev-snapshot
Alberto Garcia [Fri, 13 Nov 2015 13:00:24 +0000 (15:00 +0200)] 
block: Call external_snapshot_clean after blockdev-snapshot

Otherwise the AioContext will never be released.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 1447419624-21918-1-git-send-email-berto@igalia.com
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
8 years agoblockdev: Add missing bdrv_unref() in drive-backup
Max Reitz [Mon, 9 Nov 2015 22:39:10 +0000 (23:39 +0100)] 
blockdev: Add missing bdrv_unref() in drive-backup

All error paths after a successful bdrv_open() of target_bs should
contain a bdrv_unref(target_bs). This one did not yet, so add it.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agocrypto: fix leaks in TLS x509 helper functions
Daniel P. Berrange [Wed, 18 Nov 2015 14:44:31 +0000 (14:44 +0000)] 
crypto: fix leaks in TLS x509 helper functions

The test_tls_get_ipaddr() method forgot to free the returned data
from getaddrinfo().

The test_tls_write_cert_chain() method forgot to free the allocated
buffer holding the certificate data after writing it out to a file.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
8 years agocrypto: fix mistaken setting of Error in success code path
Daniel P. Berrange [Wed, 18 Nov 2015 14:42:40 +0000 (14:42 +0000)] 
crypto: fix mistaken setting of Error in success code path

The qcrypto_tls_session_check_certificate() method was setting
an Error even when the ACL check suceeded. This didn't affect
the callers detection of errors because they relied on the
function return status, but this did cause a memory leak since
the caller would not free an Error they did not expect to be
set.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
8 years agocrypto: fix leak of gnutls_dh_params_t data on credential unload
Daniel P. Berrange [Wed, 18 Nov 2015 14:41:35 +0000 (14:41 +0000)] 
crypto: fix leak of gnutls_dh_params_t data on credential unload

The QCryptoTLSCredsX509 object was not free'ing the allocated
gnutls_dh_params_t data when unloading the credentials

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
8 years agoiotests: fix race in 030
John Snow [Wed, 11 Nov 2015 20:27:36 +0000 (15:27 -0500)] 
iotests: fix race in 030

the stop_test case tests that we can resume a block-stream
command after it has stopped/paused due to error. We cannot
always reliably query it before it finishes after resume, though,
so make this a conditional.

The important thing is that we are still testing that it has stopped,
and that it finishes successfully after we send a resume command.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agonand: fix address overflow
Rabin Vincent [Tue, 10 Nov 2015 13:25:47 +0000 (14:25 +0100)] 
nand: fix address overflow

The shifts of the address mask and value shift beyond 32 bits when there
are 5 address cycles.

Cc: qemu-stable@nongnu.org
Signed-off-by: Rabin Vincent <rabin.vincent@axis.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2015-11-13-v2-tag' into...
Peter Maydell [Wed, 18 Nov 2015 12:47:29 +0000 (12:47 +0000)] 
Merge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2015-11-13-v2-tag' into staging

qemu-ga patch queue for 2.5

* fixes for guest-exec gspawn() usage:
  - inherit default lookup path by default instead of
    explicitly defining it as being empty.
  - don't inherit default PATH when PATH/ENV are explicit

v2:

* added fix for w32 'make install' target
* added version check for new g_spawn() flag

# gpg: Signature made Tue 17 Nov 2015 22:33:03 GMT using RSA key ID F108B584
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>"
# gpg:                 aka "Michael Roth <mdroth@utexas.edu>"
# gpg:                 aka "Michael Roth <mdroth@linux.vnet.ibm.com>"

* remotes/mdroth/tags/qga-pull-2015-11-13-v2-tag:
  makefile: fix w32 install target for qemu-ga
  qga: allow to lookup in PATH from the passed envp for guest-exec
  qga: fix for default env processing for guest-exec

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into staging
Peter Maydell [Wed, 18 Nov 2015 12:16:14 +0000 (12:16 +0000)] 
Merge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into staging

# gpg: Signature made Tue 17 Nov 2015 20:06:58 GMT using RSA key ID AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"

* remotes/jnsnow/tags/ide-pull-request:
  ide: enable buffered requests for PIO read requests
  ide: enable buffered requests for ATAPI devices
  ide: orphan all buffered requests on DMA cancel
  ide: add support for IDEBufferedRequest
  block: add blk_abort_aio_request
  ide/atapi: make PIO read requests async

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agomakefile: fix w32 install target for qemu-ga
Michael Roth [Sun, 15 Nov 2015 15:46:06 +0000 (09:46 -0600)] 
makefile: fix w32 install target for qemu-ga

fafcaf1 added a 'qemu-ga' install target on w32, which can be used
in place of the existing qemu-ga.exe target to also handle dealing
with other components such as DLLs for VSS/fsfreeze and generating
an MSI package if appropriate configure options are present.

As part of that, qemu-ga$(EXESUF) was removed from $TOOLS in favor
of this new qemu-ga target.

The install rule however relies on a direct mapping of the $TOOLS
entry to the actual resulting binary. In the case of w32, qemu-ga
is not identical to qemu-ga$(EXESUF), and the install recipe fails
to find the 'qemu-ga' binary.

Fix this by essentially remapping 'qemu-ga' back to 'qemu-ga.exe'
in the install recipe.

This raises the question of whether or not qemu-ga should continue
to live in TOOLS as opposed to its own special target, but as a
late fix for a regression in 2.5 this commit should be safer, since
we rely on qemu-ga's presence in $TOOLS in several places throughout
Makefile.

Reported-by: Stefan Weil <sw@weilnetz.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
8 years agoqga: allow to lookup in PATH from the passed envp for guest-exec
Yuri Pudgorodskiy [Thu, 12 Nov 2015 13:36:21 +0000 (16:36 +0300)] 
qga: allow to lookup in PATH from the passed envp for guest-exec

This was original behaviour before GLIB gspawn() rework and we rely on
this behaviour.

Signed-off-by: Yuri Pudgorodskiy <yur@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
* add version check (2.33.2) for G_SPAWN_SEARCH_PATH_FROM_ENVP
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
8 years agoqga: fix for default env processing for guest-exec
Yuri Pudgorodskiy [Thu, 12 Nov 2015 13:36:20 +0000 (16:36 +0300)] 
qga: fix for default env processing for guest-exec

envp == NULL must be passed inside gspawn() if it was not passed with
the command line. Original code inherits environment from the QGA,
which is wrong.

Signed-off-by: Yuri Pudgorodskiy <yur@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
8 years agoMerge remote-tracking branch 'remotes/ehabkost/tags/x86-pull-request' into staging
Peter Maydell [Tue, 17 Nov 2015 22:00:45 +0000 (22:00 +0000)] 
Merge remote-tracking branch 'remotes/ehabkost/tags/x86-pull-request' into staging

X86 fixes, 2015-11-17

Two X86 fixes, hopefully in time for -rc1.

# gpg: Signature made Tue 17 Nov 2015 19:06:53 GMT using RSA key ID 984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"

* remotes/ehabkost/tags/x86-pull-request:
  target-i386: Disable rdtscp on Opteron_G* CPU models
  target-i386: Fix mulx for identical target regs

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoide: enable buffered requests for PIO read requests
Peter Lieven [Tue, 17 Nov 2015 20:06:39 +0000 (15:06 -0500)] 
ide: enable buffered requests for PIO read requests

Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1447345846-15624-7-git-send-email-pl@kamp.de
Signed-off-by: John Snow <jsnow@redhat.com>
8 years agoide: enable buffered requests for ATAPI devices
Peter Lieven [Tue, 17 Nov 2015 20:06:33 +0000 (15:06 -0500)] 
ide: enable buffered requests for ATAPI devices

Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1447345846-15624-6-git-send-email-pl@kamp.de
Signed-off-by: John Snow <jsnow@redhat.com>
8 years agoide: orphan all buffered requests on DMA cancel
Peter Lieven [Tue, 17 Nov 2015 20:06:29 +0000 (15:06 -0500)] 
ide: orphan all buffered requests on DMA cancel

If the guests canceles a DMA request we can prematurely
invoke all callbacks of buffered requests and flag all them
as orphaned. Ideally this avoids the need for draining all
requests. For CDROM devices this works in 100% of all cases.

Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1447345846-15624-5-git-send-email-pl@kamp.de
Signed-off-by: John Snow <jsnow@redhat.com>
8 years agoide: add support for IDEBufferedRequest
Peter Lieven [Tue, 17 Nov 2015 20:06:25 +0000 (15:06 -0500)] 
ide: add support for IDEBufferedRequest

this patch adds a new aio readv compatible function which copies
all data through a bounce buffer. These buffered requests can be
flagged as orphaned which means that their original callback has
already been invoked and the request has just not been completed
by the backend storage. The bounce buffer guarantees that guest
memory corruption is avoided when such a orphaned request is
completed by the backend at a later stage.

This trick only works for read requests as a write request completed
at a later stage might corrupt data as there is no way to control
if and what data has already been written to the storage.

Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1447345846-15624-4-git-send-email-pl@kamp.de
Signed-off-by: John Snow <jsnow@redhat.com>
8 years agoblock: add blk_abort_aio_request
Peter Lieven [Tue, 17 Nov 2015 20:06:21 +0000 (15:06 -0500)] 
block: add blk_abort_aio_request

Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1447345846-15624-3-git-send-email-pl@kamp.de
Signed-off-by: John Snow <jsnow@redhat.com>
8 years agoide/atapi: make PIO read requests async
Peter Lieven [Tue, 17 Nov 2015 19:59:52 +0000 (14:59 -0500)] 
ide/atapi: make PIO read requests async

PIO read requests on the ATAPI interface used to be sync blk requests.
This has two significant drawbacks. First the main loop hangs util an
I/O request is completed and secondly if the I/O request does not
complete (e.g. due to an unresponsive storage) Qemu hangs completely.

Note: Due to possible race conditions requests during an ongoing
elementary transfer are still sync.

Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1447345846-15624-2-git-send-email-pl@kamp.de
Signed-off-by: John Snow <jsnow@redhat.com>
8 years agotarget-i386: Disable rdtscp on Opteron_G* CPU models
Eduardo Habkost [Fri, 13 Nov 2015 19:07:13 +0000 (17:07 -0200)] 
target-i386: Disable rdtscp on Opteron_G* CPU models

KVM can't virtualize rdtscp on AMD CPUs yet, so there's no point
in enabling it by default on AMD CPU models, as all we are
getting are confused users because of the "host doesn't support
requested feature" warnings.

Disable rdtscp on Opteron_G* models, but keep compatibility on
pc-*-2.4 and older (just in case there are people are doing funny
stuff using AMD CPU models on Intel hosts).

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Fix mulx for identical target regs
Richard Henderson [Tue, 17 Nov 2015 11:41:47 +0000 (12:41 +0100)] 
target-i386: Fix mulx for identical target regs

The Intel specification clearly indicates that the low part
of the result is written first and the high part of the result
is written second; thus if ModRM:reg and VEX.vvvv are identical,
the final result should be the high part of the result.

At present, TCG may either produce incorrect results or crash
with --enable-checking.

Reported-by: Toni Nedialkov <farmdve@gmail.com>
Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/kraxel/tags/pull-vnc-20151116-1' into staging
Peter Maydell [Tue, 17 Nov 2015 12:34:07 +0000 (12:34 +0000)] 
Merge remote-tracking branch 'remotes/kraxel/tags/pull-vnc-20151116-1' into staging

vnc: buffer code improvements, bugfixes.

# gpg: Signature made Mon 16 Nov 2015 17:20:02 GMT using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-vnc-20151116-1:
  vnc: fix mismerge
  buffer: allow a buffer to shrink gracefully
  buffer: factor out buffer_adj_size
  buffer: factor out buffer_req_size
  vnc: recycle empty vs->output buffer
  vnc: fix local state init
  vnc: only alloc server surface with clients connected
  vnc: use vnc_{width,height} in vnc_set_area_dirty
  vnc: factor out vnc_update_server_surface
  vnc: add vnc_width+vnc_height helpers
  vnc: zap dead code
  vnc-jobs: move buffer reset, use new buffer move
  vnc: kill jobs queue buffer
  vnc: attach names to buffers
  buffer: add tracing
  buffer: add buffer_shrink
  buffer: add buffer_move
  buffer: add buffer_move_empty
  buffer: add buffer_init
  buffer: make the Buffer capacity increase in powers of two

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
Peter Maydell [Tue, 17 Nov 2015 11:33:38 +0000 (11:33 +0000)] 
Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

# gpg: Signature made Tue 17 Nov 2015 11:13:05 GMT 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:
  virtio-blk: Fix double completion for werror=stop
  block: make 'stats-interval' an array of ints instead of a string
  aio-epoll: Fix use-after-free of node
  disas/arm: avoid clang shifting negative signed warning
  tpm: avoid clang shifting negative signed warning
  tests: Ignore recent test binaries
  docs: update bitmaps.md

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agovirtio-blk: Fix double completion for werror=stop
Fam Zheng [Tue, 17 Nov 2015 10:20:11 +0000 (18:20 +0800)] 
virtio-blk: Fix double completion for werror=stop

When a request R is absorbed by request M, it is appended to the
"mr_next" queue led by M, and is completed together with the completion
of M, in virtio_blk_rw_complete.

During DMA restart in virtio_blk_dma_restart_bh, requests in s->rq are
parsed and submitted again, possibly with a stale req->mr_next. It could
be a problem if the request merging in virtio_blk_handle_request hasn't
refreshed every mr_next pointer, in which case, virtio_blk_rw_complete
could walk through unexpected requests following the stale pointers.

Fix this by unsetting the pointer in virtio_blk_rw_complete. It is safe
because this req is either completed and freed right away, or it will be
restarted and parsed from scratch out of the vq later.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: make 'stats-interval' an array of ints instead of a string
Alberto Garcia [Mon, 16 Nov 2015 09:28:38 +0000 (11:28 +0200)] 
block: make 'stats-interval' an array of ints instead of a string

This is the natural JSON representation and prevents us from having to
decode the list manually.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 0e3da8fa206f4ab534ae3ce6086e75fe84f1557e.1447665472.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoaio-epoll: Fix use-after-free of node
Fam Zheng [Mon, 16 Nov 2015 06:32:14 +0000 (14:32 +0800)] 
aio-epoll: Fix use-after-free of node

aio_epoll_update needs the fields in node, so delay the free.

Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1447655534-13974-1-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agodisas/arm: avoid clang shifting negative signed warning
Stefan Hajnoczi [Tue, 10 Nov 2015 15:57:35 +0000 (15:57 +0000)] 
disas/arm: avoid clang shifting negative signed warning

clang 3.7.0 on x86_64 warns about the following:

  disas/arm.c:1782:17: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
    imm |= (-1 << 7);
            ~~ ^

Note that this patch preserves the tab indent in this source file
because the surrounding code still uses tabs.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agotpm: avoid clang shifting negative signed warning
Stefan Hajnoczi [Tue, 10 Nov 2015 15:57:34 +0000 (15:57 +0000)] 
tpm: avoid clang shifting negative signed warning

clang 3.7.0 on x86_64 warns about the following:

  hw/tpm/tpm_tis.c:1000:36: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
            tis->loc[c].iface_id = TPM_TIS_IFACE_ID_SUPPORTED_FLAGS1_3;
                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  hw/tpm/tpm_tis.c:144:10: note: expanded from macro 'TPM_TIS_IFACE_ID_SUPPORTED_FLAGS1_3'
     (~0 << 4)/* all of it is don't care */)
      ~~ ^

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agotests: Ignore recent test binaries
Eric Blake [Fri, 13 Nov 2015 03:47:03 +0000 (20:47 -0700)] 
tests: Ignore recent test binaries

Commits 6c6f312d and bd797fc1 added new tests (test-blockjob-txn
and test-timed-average, respectively), but did not mark them for
exclusion in .gitignore.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1447386423-13160-1-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agodocs: update bitmaps.md
John Snow [Tue, 10 Nov 2015 23:00:17 +0000 (18:00 -0500)] 
docs: update bitmaps.md

Include new error handling scenarios for 2.5.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1447196417-26081-1-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2015-11-17' into staging
Peter Maydell [Tue, 17 Nov 2015 10:20:25 +0000 (10:20 +0000)] 
Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2015-11-17' into staging

QAPI patches

# gpg: Signature made Tue 17 Nov 2015 08:28:24 GMT using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"

* remotes/armbru/tags/pull-qapi-2015-11-17:
  input: Document why x-input-send-event is still experimental
  qapi: Document introspection stability considerations

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoinput: Document why x-input-send-event is still experimental
Eric Blake [Thu, 12 Nov 2015 18:50:43 +0000 (11:50 -0700)] 
input: Document why x-input-send-event is still experimental

The x-input-send-event command was introduced in 2.2 with mention
that it is experimental, but now that several releases have elapsed
without any changes, it would be nice to document why that was done
and should still remain experimental in 2.5.

Meanwhile, our documentation states that we prefer 'lower-case',
rather than 'CamelCase', for qapi enum values.  The InputButton and
InputAxis enums violate this convention.  However, because they are
currently used primarily for generating code that is used internally;
and their only exposure through QMP is via the experimental
'x-input-send-event' command, we are free to change their spelling.
Of course, it would be nicer to delay such a change until the same
time we promote the command to non-experimental.  Adding
documentation will help us remember to do that rename.

We have plans to tighten the qapi generator to flag instances of
inconsistent use of naming conventions; if that lands first, it
will just need to whitelist these exceptions until the time we
settle on the final interface.

Fix a typo in the docs for InputAxis while at it.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1447354243-31825-1-git-send-email-eblake@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
8 years agoqapi: Document introspection stability considerations
Eric Blake [Wed, 11 Nov 2015 17:50:02 +0000 (10:50 -0700)] 
qapi: Document introspection stability considerations

We are not ready (and might never be ready) to declare
introspection stable between releases. Clients written to
control multiple versions of qemu, and desiring to know
whether a particular member is supported for a given
command, must be prepared to locate that member in spite
of qapi changes that may affect the member's location or
type within the overall object, even though such changes
did not break QMP wire back-compatibility.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1447264202-19554-1-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/otubo/tags/pull-seccomp-20151116' into staging
Peter Maydell [Mon, 16 Nov 2015 12:09:47 +0000 (12:09 +0000)] 
Merge remote-tracking branch 'remotes/otubo/tags/pull-seccomp-20151116' into staging

seccomp branch queue

# gpg: Signature made Mon 16 Nov 2015 08:50:28 GMT using RSA key ID 12F8BD2F
# gpg: Good signature from "Eduardo Otubo (Software Engineer @ ProfitBricks) <eduardo.otubo@profitbricks.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 1C96 46B6 E1D1 C38A F2EC  3FDE FD0C FF5B 12F8 BD2F

* remotes/otubo/tags/pull-seccomp-20151116:
  seccomp: loosen library version dependency
  configure: arm/aarch64: allow enable-seccomp
  seccomp: add cacheflush to whitelist

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into staging
Peter Maydell [Mon, 16 Nov 2015 10:14:33 +0000 (10:14 +0000)] 
Merge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into staging

# gpg: Signature made Fri 13 Nov 2015 20:16:21 GMT using RSA key ID AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"

* remotes/jnsnow/tags/ide-pull-request:
  qtest/ahci: use raw format when qemu-img is absent
  libqos: add qemu-img presence check
  qtest/ahci: always specify image format
  ahci/qtest: don't use tcp sockets for migration tests
  atapi: Prioritize unknown cmd error over BCL error
  atapi: add byte_count_limit helper

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoseccomp: loosen library version dependency
dann frazier [Fri, 23 Oct 2015 21:34:22 +0000 (15:34 -0600)] 
seccomp: loosen library version dependency

Drop the libseccomp required version back to 2.1.0, restoring the ability
to build w/ --enable-seccomp on Ubuntu 14.04.

Commit 4cc47f8b3cc4f32586ba2f7fce1dc267da774a69 tightened the dependency
on libseccomp from version 2.1.0 to 2.1.1. This broke building on Ubuntu
14.04, the current Ubuntu LTS release. The commit message didn't mention
any specific functional need for 2.1.1, just that it was the most recent
stable version at the time. I reviewed the changes between 2.1.0 and 2.1.1,
but it looks like that update just contained minor fixes and cleanups - no
obvious (to me) new interfaces or critical bug fixes.

Signed-off-by: dann frazier <dann.frazier@canonical.com>
Acked-by: Eduardo Otubo <eduardo.otubo@profitbricks.com>
8 years agoconfigure: arm/aarch64: allow enable-seccomp
Andrew Jones [Wed, 30 Sep 2015 15:59:18 +0000 (11:59 -0400)] 
configure: arm/aarch64: allow enable-seccomp

This is a revert of ae6e8ef11e6cb, but with a bit of refactoring,
and also specifically adding arm/aarch64, rather than all
architectures. Currently, libseccomp code appears to also support
mips, ppc, and s390. We could therefore allow qemu to enable
seccomp for those platforms as well, with additional configure
patches, given they're tested and proven to work.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Acked-by: Eduardo Otubo <eduardo.otubo@profitbricks.com>
8 years agoseccomp: add cacheflush to whitelist
Andrew Jones [Mon, 2 Nov 2015 22:53:26 +0000 (23:53 +0100)] 
seccomp: add cacheflush to whitelist

cacheflush is an arm-specific syscall that qemu built for arm
uses. Add it to the whitelist, but only if we're linking with
a recent enough libseccomp.

Signed-off-by: Andrew Jones <drjones@redhat.com>
8 years agoqtest/ahci: use raw format when qemu-img is absent
John Snow [Fri, 13 Nov 2015 19:31:43 +0000 (14:31 -0500)] 
qtest/ahci: use raw format when qemu-img is absent

If we don't have the qemu-img tool, use the raw format
for tests and skip the high-sector LBA48 tests.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1447439479-16775-4-git-send-email-jsnow@redhat.com

8 years agolibqos: add qemu-img presence check
John Snow [Fri, 13 Nov 2015 19:31:42 +0000 (14:31 -0500)] 
libqos: add qemu-img presence check

To allow tests to optionally exercise additional tests
that require the qemu-img tool that may not be present
in all builds.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1447439479-16775-3-git-send-email-jsnow@redhat.com

8 years agoqtest/ahci: always specify image format
John Snow [Fri, 13 Nov 2015 19:31:42 +0000 (14:31 -0500)] 
qtest/ahci: always specify image format

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1447439479-16775-2-git-send-email-jsnow@redhat.com

8 years agoahci/qtest: don't use tcp sockets for migration tests
John Snow [Fri, 13 Nov 2015 19:31:42 +0000 (14:31 -0500)] 
ahci/qtest: don't use tcp sockets for migration tests

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1447108074-20609-1-git-send-email-jsnow@redhat.com

8 years agoatapi: Prioritize unknown cmd error over BCL error
John Snow [Fri, 13 Nov 2015 19:31:42 +0000 (14:31 -0500)] 
atapi: Prioritize unknown cmd error over BCL error

If we don't know about the command at all, we need to prioritize
that failure above the zero byte-count-limit failure.

This fixes a failure in the sparc64 NetBSD 7.0 installer bootup.

Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: John Snow <jsnow@redhat.com>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-id: 1447095959-10046-3-git-send-email-jsnow@redhat.com

8 years agoatapi: add byte_count_limit helper
John Snow [Fri, 13 Nov 2015 19:31:42 +0000 (14:31 -0500)] 
atapi: add byte_count_limit helper

Signed-off-by: John Snow <jsnow@redhat.com>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-id: 1447095959-10046-2-git-send-email-jsnow@redhat.com

8 years agoUpdate version for v2.5.0-rc0 release v2.5.0-rc0
Peter Maydell [Fri, 13 Nov 2015 17:10:36 +0000 (17:10 +0000)] 
Update version for v2.5.0-rc0 release

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agohw/misc: Add support for ADC controller in Xilinx Zynq 7000
Guenter Roeck [Thu, 12 Nov 2015 17:54:55 +0000 (09:54 -0800)] 
hw/misc: Add support for ADC controller in Xilinx Zynq 7000

Add support for the Xilinx XADC core used in Zynq 7000.

References:
- Zynq-7000 All Programmable SoC Technical Reference Manual
- 7 Series FPGAs and Zynq-7000 All Programmable SoC XADC
  Dual 12-Bit 1 MSPS Analog-to-Digital Converter

Tested with Linux using QEMU machine xilinx-zynq-a9 with devicetree
files zynq-zc702.dtb and zynq-zc706.dtb, and kernel configuration
multi_v7_defconfig.

Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[ PC changes:
  * Changed macro names to match TRM where possible
  * Made programmers model macro scheme consistent
  * Dropped XADC_ZYNQ_ prefix on local macros
  * Fix ALM field width
  * Update threshold-comparison interrupts in _update_ints()
  * factored out DFIFO pushes into helper. Renamed to "push/pop"
  * Changed xadc_reg to 10 bits and added OOB check.
  * Reduced scope of MCTL reset to just stop channel coms.
  * Added dummy read data to write commands
  * Changed _ to - seperators in string names and filenames
  * Dropped ------------ in header comment
  * Catchall'ed _update_ints() in _write handler.
  * Minor whitespace changes.
  * Use ZYNQ_XADC_FIFO_DEPTH instead of ARRAY_SIZE()
]
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/juanquintela/tags/migration/20151112' into...
Peter Maydell [Thu, 12 Nov 2015 18:08:19 +0000 (18:08 +0000)] 
Merge remote-tracking branch 'remotes/juanquintela/tags/migration/20151112' into staging

migration/next for 20151112

# gpg: Signature made Thu 12 Nov 2015 16:56:44 GMT using RSA key ID 5872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg:                 aka "Juan Quintela <quintela@trasno.org>"

* remotes/juanquintela/tags/migration/20151112:
  migration_init: Fix lock initialisation/make it explicit
  migrate-start-postcopy: Improve text
  Postcopy: Fix TP!=HP zero case
  Finish non-postcopiable iterative devices before package
  migration: Make 32bit linux compile with RDMA
  migration: print ram_addr_t as RAM_ADDR_FMT not %zx

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Peter Maydell [Thu, 12 Nov 2015 17:22:06 +0000 (17:22 +0000)] 
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches (rebased Stefan's pull request)

# gpg: Signature made Thu 12 Nov 2015 15:34:16 GMT using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"

* remotes/kevin/tags/for-upstream: (43 commits)
  block: Update copyright of the accounting code
  scsi-disk: Account for failed operations
  macio: Account for failed operations
  ide: Account for failed and invalid operations
  atapi: Account for failed and invalid operations
  xen_disk: Account for failed and invalid operations
  virtio-blk: Account for failed and invalid operations
  nvme: Account for failed and invalid operations
  iotests: Add test for the block device statistics
  block: Use QEMU_CLOCK_VIRTUAL for the accounting code in qtest mode
  qemu-io: Account for failed, invalid and flush operations
  block: New option to define the intervals for collecting I/O statistics
  block: Add average I/O queue depth to BlockDeviceTimedStats
  block: Compute minimum, maximum and average I/O latencies
  block: Allow configuring whether to account failed and invalid ops
  block: Add statistics for failed and invalid I/O operations
  block: Add idle_time_ns to BlockDeviceStats
  util: Infrastructure for computing recent averages
  block: define 'clock_type' for the accounting code
  ide: Account for write operations correctly
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agomigration_init: Fix lock initialisation/make it explicit
Dr. David Alan Gilbert [Thu, 12 Nov 2015 15:38:27 +0000 (15:38 +0000)] 
migration_init: Fix lock initialisation/make it explicit

Peter reported a lock error on MacOS after my a82d593b
patch.

migrate_get_current does one-time initialisation of
a bunch of variables.
migrate_init does reinitialisation even on a 2nd
migrate after a cancel.

The problem here was that I'd initialised the mutex
in migrate_get_current, and the memset in migrate_init
corrupted it.

Remove the memset and replace it by explicit initialisation
of fields that need initialising; this also turns out to be simpler
than the old code that had to preserve some fields.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixes: a82d593b
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agomigrate-start-postcopy: Improve text
Dr. David Alan Gilbert [Thu, 12 Nov 2015 11:34:44 +0000 (11:34 +0000)] 
migrate-start-postcopy: Improve text

Improve the text in both the qapi-schema and hmp help to point out
you need to set the postcopy-ram capability prior to issuing
migrate-start-postcopy.

Also fix the text of the migrate_start_postcopy error that
deals with capabilities.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Acked-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agoconfigure: check for $cxx before use
John Snow [Thu, 12 Nov 2015 16:29:49 +0000 (11:29 -0500)] 
configure: check for $cxx before use

I broke this when adding checks for clang++.

Reported-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1447345789-840-1-git-send-email-jsnow@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoPostcopy: Fix TP!=HP zero case
Dr. David Alan Gilbert [Wed, 11 Nov 2015 14:02:28 +0000 (14:02 +0000)] 
Postcopy: Fix TP!=HP zero case

Where the target page size is different from the host page
we special case it, but I messed up on the zero case check.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agoFinish non-postcopiable iterative devices before package
Dr. David Alan Gilbert [Wed, 11 Nov 2015 14:02:27 +0000 (14:02 +0000)] 
Finish non-postcopiable iterative devices before package

Where we have iterable, but non-postcopiable devices (e.g. htab
or block migration), complete them before forming the 'package'
but with the CPUs stopped.  This stops them filling up the package.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
8 years agomigration: Make 32bit linux compile with RDMA
Juan Quintela [Tue, 10 Nov 2015 16:43:04 +0000 (17:43 +0100)] 
migration: Make 32bit linux compile with RDMA

Rest of the file already use that trick. 64bit offsets make no sense in
32bit archs, but that is ram_addr_t for you.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
8 years agomigration: print ram_addr_t as RAM_ADDR_FMT not %zx
Juan Quintela [Tue, 10 Nov 2015 16:42:05 +0000 (17:42 +0100)] 
migration: print ram_addr_t as RAM_ADDR_FMT not %zx

Not all the wold is 64bits (yet).

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
8 years agotarget-arm: Update PC before calling gen_helper_check_breakpoints()
Sergey Fedorov [Thu, 12 Nov 2015 15:10:43 +0000 (15:10 +0000)] 
target-arm: Update PC before calling gen_helper_check_breakpoints()

PC should be updated in the CPU state before calling check_breakpoints()
helper. Otherwise, the helper would not see the correct PC in the CPU
state if it is not at the start of a TB.

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-id: 1447176222-16401-1-git-send-email-serge.fdrv@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
Peter Maydell [Thu, 12 Nov 2015 15:15:30 +0000 (15:15 +0000)] 
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio, vhost: fixes for 2.5

This fixes a performance regression with virtio 1,
and makes device stop/start more robust for vhost-user.
virtio devices on pcie bus now have pcie and pm
capability, as required by the PCI Express spec.
migration now works better with virtio 9p.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Thu 12 Nov 2015 14:40:42 GMT using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"

* remotes/mst/tags/for_upstream:
  virtio-9p: add savem handlers
  hw/virtio: Add PCIe capability to virtio devices
  vhost: send SET_VRING_ENABLE at start/stop
  vhost: rename RESET_DEVICE backto RESET_OWNER
  vhost-user: modify SET_LOG_BASE to pass mmap size and offset
  virtio-pci: unbreak queue_enable read
  virtio-pci: introduce pio notification capability for modern device
  virtio-pci: use zero length mmio eventfd for 1.0 notification cap when possible
  KVM: add support for any length io eventfd
  memory: don't try to adjust endianness for zero length eventfd
  virtio-pci: fix 1.0 virtqueue migration

Conflicts:
include/hw/compat.h
[Fixed a trivial merge conflict in compat.h]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoblock: Update copyright of the accounting code
Alberto Garcia [Wed, 28 Oct 2015 15:33:18 +0000 (17:33 +0200)] 
block: Update copyright of the accounting code

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 80a2278e3ec2dafd5daab20a7cb2d6a9b83371e4.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoscsi-disk: Account for failed operations
Alberto Garcia [Wed, 28 Oct 2015 15:33:17 +0000 (17:33 +0200)] 
scsi-disk: Account for failed operations

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 0ead7b0e59c22926e033ca12725e3a31985ec46b.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agomacio: Account for failed operations
Alberto Garcia [Wed, 28 Oct 2015 15:33:16 +0000 (17:33 +0200)] 
macio: Account for failed operations

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: ee6f4fde6a7c1071ca96d4ddd53e4934ff812fcd.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoide: Account for failed and invalid operations
Alberto Garcia [Wed, 28 Oct 2015 15:33:15 +0000 (17:33 +0200)] 
ide: Account for failed and invalid operations

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: bf4d6c9c563877e699b0bf42e7eaf8b096c4a35e.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoatapi: Account for failed and invalid operations
Alberto Garcia [Wed, 28 Oct 2015 15:33:14 +0000 (17:33 +0200)] 
atapi: Account for failed and invalid operations

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 59dee4e2921b0c79d41c49b67dfb93d32db9f7f9.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoxen_disk: Account for failed and invalid operations
Alberto Garcia [Wed, 28 Oct 2015 15:33:13 +0000 (17:33 +0200)] 
xen_disk: Account for failed and invalid operations

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: e0cbb96cb0e1f86c37c7ce332efdf02b57b9d365.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agovirtio-blk: Account for failed and invalid operations
Alberto Garcia [Wed, 28 Oct 2015 15:33:12 +0000 (17:33 +0200)] 
virtio-blk: Account for failed and invalid operations

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 4f623ce52c9d673d35a043fc2959526b41b685c6.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agonvme: Account for failed and invalid operations
Alberto Garcia [Wed, 28 Oct 2015 15:33:11 +0000 (17:33 +0200)] 
nvme: Account for failed and invalid operations

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 678dc67da229759d404b44f7cc2bf5ed8bf8ad14.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoiotests: Add test for the block device statistics
Alberto Garcia [Wed, 28 Oct 2015 15:33:10 +0000 (17:33 +0200)] 
iotests: Add test for the block device statistics

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 0fb8501bbf3666b3d5d3f67fa899729c88f21baf.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: Use QEMU_CLOCK_VIRTUAL for the accounting code in qtest mode
Alberto Garcia [Wed, 28 Oct 2015 15:33:09 +0000 (17:33 +0200)] 
block: Use QEMU_CLOCK_VIRTUAL for the accounting code in qtest mode

This patch switches to QEMU_CLOCK_VIRTUAL for the accounting code in
qtest mode, and makes the latency of the operation constant. This way we
can perform tests on the accounting code with reproducible results.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 35ed0501450fa572684e9b5e92c361ab6cce565b.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoqemu-io: Account for failed, invalid and flush operations
Alberto Garcia [Wed, 28 Oct 2015 15:33:08 +0000 (17:33 +0200)] 
qemu-io: Account for failed, invalid and flush operations

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 78a7662a8636e55991737ece50003a2dc5a5f3e0.1446044838.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: New option to define the intervals for collecting I/O statistics
Alberto Garcia [Wed, 28 Oct 2015 15:33:07 +0000 (17:33 +0200)] 
block: New option to define the intervals for collecting I/O statistics

The BlockAcctStats structure contains a list of BlockAcctTimedStats.
Each one of these collects statistics about the minimum, maximum and
average latencies of all I/O operations in a certain interval of time.

This patch adds a new "stats-intervals" option that allows defining
these intervals.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 41cbcd334a61c6157f0f495cdfd21eff6c156f2a.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: Add average I/O queue depth to BlockDeviceTimedStats
Alberto Garcia [Wed, 28 Oct 2015 15:33:06 +0000 (17:33 +0200)] 
block: Add average I/O queue depth to BlockDeviceTimedStats

This patch adds two new fields to BlockDeviceTimedStats that track the
average number of pending read and write requests for a block device.

The values are calculated for the period of time defined for that
interval.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: fd31fef53e2714f2f30d59ed58ca2f67ec9ab926.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: Compute minimum, maximum and average I/O latencies
Alberto Garcia [Wed, 28 Oct 2015 15:33:05 +0000 (17:33 +0200)] 
block: Compute minimum, maximum and average I/O latencies

This patch keeps track of the minimum, maximum and average latencies
of I/O operations during a certain interval of time.

The values are exposed in the BlockDeviceTimedStats structure.

An option to define the intervals to collect these statistics will be
added in a separate patch.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: c7382dc89622c64f918d09f32815827772628f8e.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: Allow configuring whether to account failed and invalid ops
Alberto Garcia [Wed, 28 Oct 2015 15:33:04 +0000 (17:33 +0200)] 
block: Allow configuring whether to account failed and invalid ops

This patch adds two options, "stats-account-invalid" and
"stats-account-failed", that can be used to decide whether invalid and
failed I/O operations must be used when collecting statistics for
latency and last access time.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: ebc7e5966511a342cad428a392c5f5ad56b15213.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: Add statistics for failed and invalid I/O operations
Alberto Garcia [Wed, 28 Oct 2015 15:33:03 +0000 (17:33 +0200)] 
block: Add statistics for failed and invalid I/O operations

This patch adds the block_acct_failed() and block_acct_invalid()
functions to allow keeping track of failed and invalid I/O operations.

The number of failed and invalid operations is exposed in
BlockDeviceStats.

We don't keep track of the time spent on invalid operations because
they are cancelled immediately when they are started.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: a7256ccb883a86356b1c6c46b5a29ed5448546a5.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: Add idle_time_ns to BlockDeviceStats
Alberto Garcia [Wed, 28 Oct 2015 15:33:02 +0000 (17:33 +0200)] 
block: Add idle_time_ns to BlockDeviceStats

This patch adds the new field 'idle_time_ns' to the BlockDeviceStats
structure, indicating the time that has passed since the previous I/O
operation.

It also adds the block_acct_idle_time_ns() call, to ensure that all
references to the clock type used for accounting are in the same
place. This will later allow us to use a different clock for iotests.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 7d8cfcf931453e1a2443e6626e8c1edc347c7c8a.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoutil: Infrastructure for computing recent averages
Alberto Garcia [Wed, 28 Oct 2015 15:33:01 +0000 (17:33 +0200)] 
util: Infrastructure for computing recent averages

This module computes the average of a set of values within a time
window, keeping also track of the minimum and maximum values.

In order to produce more accurate results it works internally by
creating two time windows of the same period, offsetted by half of
that period. Values are accounted on both windows and the data is
always returned from the oldest one.

[Add missing util/replay.o to test-timed-average dependencies to fix the
build.
--Stefan]

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 201b09c21bbc9c329779d2b2365ee2b9c80dceeb.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: define 'clock_type' for the accounting code
Alberto Garcia [Wed, 28 Oct 2015 15:33:00 +0000 (17:33 +0200)] 
block: define 'clock_type' for the accounting code

Its value is still QEMU_CLOCK_REALTIME, but having it in a variable will
allow us to change its value easily in the future when running in qtest
mode.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 547485eb841cf9e3b2770c96539ae9ae5996e214.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoide: Account for write operations correctly
Alberto Garcia [Wed, 28 Oct 2015 15:32:59 +0000 (17:32 +0200)] 
ide: Account for write operations correctly

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 2e71323c0875c2b66a8ae22229545e0c013af8d4.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoxen_disk: Account for flush operations
Alberto Garcia [Wed, 28 Oct 2015 15:32:58 +0000 (17:32 +0200)] 
xen_disk: Account for flush operations

Currently both BLKIF_OP_WRITE and BLKIF_OP_FLUSH_DISKCACHE are being
accounted as write operations.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 7a2a14e3ac62027aa6267a6c02abc70717be9c0a.1446044837.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agotests: add BlockJobTxn unit test
Stefan Hajnoczi [Thu, 5 Nov 2015 23:13:20 +0000 (18:13 -0500)] 
tests: add BlockJobTxn unit test

The BlockJobTxn unit test verifies that both single jobs and pairs of
jobs behave as a transaction group.  Either all jobs complete
successfully or the group is cancelled.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1446765200-3054-15-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoiotests: 124 - transactional failure test
John Snow [Thu, 5 Nov 2015 23:13:19 +0000 (18:13 -0500)] 
iotests: 124 - transactional failure test

Use a transaction to request an incremental backup across two drives.
Coerce one of the jobs to fail, and then re-run the transaction.

Verify that no bitmap data was lost due to the partial transaction
failure.

To support the 'err-cancel' QMP argument name it's necessary for
transaction_action() to convert underscores in Python argument names
to hyphens for QMP argument names.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1446765200-3054-14-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: add transactional properties
John Snow [Thu, 5 Nov 2015 23:13:18 +0000 (18:13 -0500)] 
block: add transactional properties

Add both transactional properties to the QMP transactional interface,
and add the BlockJobTxn that we create as a result of the err-cancel
property to the BlkActionState structure.

[split up from a patch originally by Stefan and Fam. --js]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1446765200-3054-13-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: Add BlockJobTxn support to backup_run
John Snow [Thu, 5 Nov 2015 23:13:17 +0000 (18:13 -0500)] 
block: Add BlockJobTxn support to backup_run

Allow a BlockJobTxn to be passed into backup_run, which
will allow the job to join a transactional group if present.

Propagate this new parameter outward into new QMP helper
functions in blockdev.c to allow transaction commands to
pass forward their BlockJobTxn object in a forthcoming patch.

[split up from a patch originally by Stefan and Fam. --js]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1446765200-3054-12-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock/backup: Rely on commit/abort for cleanup
John Snow [Thu, 5 Nov 2015 23:13:16 +0000 (18:13 -0500)] 
block/backup: Rely on commit/abort for cleanup

Switch over to the new .commit/.abort handlers for
cleaning up incremental bitmaps.

[split up from a patch originally by Stefan and Fam. --js]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1446765200-3054-11-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblock: Add block job transactions
Fam Zheng [Thu, 5 Nov 2015 23:13:15 +0000 (18:13 -0500)] 
block: Add block job transactions

Sometimes block jobs must execute as a transaction group.  Finishing
jobs wait until all other jobs are ready to complete successfully.
Failure or cancellation of one job cancels the other jobs in the group.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1446765200-3054-10-git-send-email-jsnow@redhat.com
[Rewrite the implementation which is now contained in block_job_completed.
--Fam]
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblockjob: Simplify block_job_finish_sync
Fam Zheng [Thu, 5 Nov 2015 23:13:14 +0000 (18:13 -0500)] 
blockjob: Simplify block_job_finish_sync

With job->completed and job->ret to replace BlockFinishData.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1446765200-3054-9-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
8 years agoblockjob: Add "completed" and "ret" in BlockJob
Fam Zheng [Thu, 5 Nov 2015 23:13:13 +0000 (18:13 -0500)] 
blockjob: Add "completed" and "ret" in BlockJob

They are set when block_job_completed is called.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1446765200-3054-8-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>