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6 years agoqemu-options: Mention locking option of file driver
Fam Zheng [Fri, 24 Nov 2017 08:53:51 +0000 (16:53 +0800)]
qemu-options: Mention locking option of file driver

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
6 years agodocs: Add image locking subsection
Fam Zheng [Fri, 24 Nov 2017 08:53:50 +0000 (16:53 +0800)]
docs: Add image locking subsection

This documents the image locking feature and explains when and how
related options can be used.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
6 years agoiotests: fix 075 and 078
John Snow [Wed, 22 Nov 2017 00:16:56 +0000 (19:16 -0500)]
iotests: fix 075 and 078

Both of these tests are for formats which now stipulate that they are
read-only. Adjust the tests to match.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Lukáš Doktor <ldoktor@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
6 years agoosdep.h: Make TIME_MAX handle different time_t types
Peter Maydell [Thu, 23 Nov 2017 15:56:38 +0000 (15:56 +0000)]
osdep.h: Make TIME_MAX handle different time_t types

In our various supported host OSes, the time_t type may be either 32
or 64 bit, and could in theory also be either signed or unsigned.
Notably, in OpenBSD time_t is a 64 bit type even if 'long' is 32
bits, so using LONG_MAX for TIME_MAX is incorrect.

Use an approach suggested by Paolo Bonzini which calculates
the maximum value of the type rather than hardcoding it;
to do this we use the TYPE_MAXIMUM macro from Gnulib.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1511452598-6077-1-git-send-email-peter.maydell@linaro.org

6 years agohw/arm/virt: Add 2.11 machine type
Eric Auger [Fri, 24 Nov 2017 09:43:46 +0000 (10:43 +0100)]
hw/arm/virt: Add 2.11 machine type

Add virt-2.11 machine type.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Message-id: 1511516626-21178-1-git-send-email-eric.auger@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'remotes/cohuck/tags/s390x-20171124' into staging
Peter Maydell [Fri, 24 Nov 2017 10:26:20 +0000 (10:26 +0000)]
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20171124' into staging

Deal with the fallout from the deletion of the old s390 virtio header
in Linux master.

# gpg: Signature made Fri 24 Nov 2017 09:56:49 GMT
# gpg:                using RSA key 0xDECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>"
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>"
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20171124:
  s390/kvm_virtio/linux-headers: remove traces of old virtio transport

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agos390/kvm_virtio/linux-headers: remove traces of old virtio transport
Christian Borntraeger [Wed, 15 Nov 2017 15:42:23 +0000 (16:42 +0100)]
s390/kvm_virtio/linux-headers: remove traces of old virtio transport

We no longer support the old s390 transport, neither does the newest
Linux kernel. Remove it from the linux header script as well as the
s390x virtio code.  We still should handle the VIRTIO_NOTIFY hypercall,
to tolerate early printk on older guest kernels without an sclp console.
We continue to ignore these events.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20171115154223.109991-1-borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
6 years agoconfigure: Deal with OpenBSD/i386 emulation linker
Brad Smith [Tue, 7 Nov 2017 23:46:11 +0000 (18:46 -0500)]
configure: Deal with OpenBSD/i386 emulation linker

OpenBSD/i386 uses elf_i386_obsd for the emulation linker.

Signed-off-by: Brad Smith <brad@comstyle.com>
Message-id: 20171107234608.GA395@humpty.home.comstyle.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'remotes/juanquintela/tags/migration/20171122' into...
Peter Maydell [Thu, 23 Nov 2017 13:50:00 +0000 (13:50 +0000)]
Merge remote-tracking branch 'remotes/juanquintela/tags/migration/20171122' into staging

migration/next for 20171122

# gpg: Signature made Wed 22 Nov 2017 08:43:13 GMT
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# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg:                 aka "Juan Quintela <quintela@trasno.org>"
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03  4B82 F487 EF18 5872 D723

* remotes/juanquintela/tags/migration/20171122:
  migration/ram.c: do not set 'postcopy_running' in POSTCOPY_INCOMING_END
  migration, xen: Fix block image lock issue on live migration

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.11-20171122' into staging
Peter Maydell [Thu, 23 Nov 2017 13:15:02 +0000 (13:15 +0000)]
Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.11-20171122' into staging

ppc patch queue 2017-11-22

Several more fixes to merge for qemu-2.11.

# gpg: Signature made Wed 22 Nov 2017 04:29:57 GMT
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# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.11-20171122:
  ppc: fix VTB migration
  spapr: Implement bug in spapr-vty device to be compatible with PowerVM
  hw/ppc/spapr: Fix virtio-scsi bootindex handling for LUNs >= 256

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoFix build of console and GUI executables for Windows
Stefan Weil [Thu, 16 Nov 2017 16:37:32 +0000 (17:37 +0100)]
Fix build of console and GUI executables for Windows

It was broken by commit 8ecc89f6e792152496eccb684d6c8c48aba8027d which
moved the SDL linker flags from macro libs_softmmu to macro SDL_LIBS.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Message-id: 20171116163732.31584-1-sw@weilnetz.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agotcg: Fix compilation without TCG
Juan Quintela [Wed, 22 Nov 2017 08:41:57 +0000 (09:41 +0100)]
tcg: Fix compilation without TCG

Commit 27266271977c started to use tb_unlock() and tlb_set_dirty() on
non TCG code.  Add the functions as stubs, so that builds with TCG
disabled continue to compile.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
[PMM: tweaked commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agomigration/ram.c: do not set 'postcopy_running' in POSTCOPY_INCOMING_END
Daniel Henrique Barboza [Thu, 16 Nov 2017 22:35:26 +0000 (20:35 -0200)]
migration/ram.c: do not set 'postcopy_running' in POSTCOPY_INCOMING_END

When migrating a VM with 'migrate_set_capability postcopy-ram on'
a postcopy_state is set during the process, ending up with the
state POSTCOPY_INCOMING_END when the migration is over. This
postcopy_state is taken into account inside ram_load to check
how it will load the memory pages. This same ram_load is called when
in a loadvm command.

Inside ram_load, the logic to see if we're at postcopy_running state
is:

postcopy_running = postcopy_state_get() >= POSTCOPY_INCOMING_LISTENING

postcopy_state_get() returns this enum type:

typedef enum {
    POSTCOPY_INCOMING_NONE = 0,
    POSTCOPY_INCOMING_ADVISE,
    POSTCOPY_INCOMING_DISCARD,
    POSTCOPY_INCOMING_LISTENING,
    POSTCOPY_INCOMING_RUNNING,
    POSTCOPY_INCOMING_END
} PostcopyState;

In the case where ram_load is executed and postcopy_state is
POSTCOPY_INCOMING_END, postcopy_running will be set to 'true' and
ram_load will behave like a postcopy is in progress. This scenario isn't
achievable in a migration but it is reproducible when executing
savevm/loadvm after migrating with 'postcopy-ram on', causing loadvm
to fail with Error -22:

Source:

(qemu) migrate_set_capability postcopy-ram on
(qemu) migrate tcp:127.0.0.1:4444

Dest:

(qemu) migrate_set_capability postcopy-ram on
(qemu)
ubuntu1704-intel login:
Ubuntu 17.04 ubuntu1704-intel ttyS0

ubuntu1704-intel login: (qemu)
(qemu) savevm test1
(qemu) loadvm test1
Unknown combination of migration flags: 0x4 (postcopy mode)
error while loading state for instance 0x0 of device 'ram'
Error -22 while loading VM state
(qemu)

This patch fixes this problem by changing the existing logic for
postcopy_advised and postcopy_running in ram_load, making them
'false' if we're at POSTCOPY_INCOMING_END state.

Signed-off-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
CC: Juan Quintela <quintela@redhat.com>
CC: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reported-by: Balamuruhan S <bala24@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
6 years agoppc: fix VTB migration
Laurent Vivier [Tue, 21 Nov 2017 20:16:43 +0000 (21:16 +0100)]
ppc: fix VTB migration

Migration of a system under stress (for example, with
"stress-ng --numa 2") triggers on the destination
some kernel watchdog messages like:

NMI watchdog: BUG: soft lockup - CPU#0 stuck for 3489660870s!
NMI watchdog: BUG: soft lockup - CPU#1 stuck for 3489660884s!

This problem appears with the changes introduced by
    42043e4 spapr: clock should count only if vm is running

I think this commit only triggers the problem.

Kernel computes the soft lockup duration using the
Virtual Timebase register (VTB), not using the Timebase
Register (TBR, the one 42043e4 stops).

It appears VTB is not migrated, so this patch adds it in
the list of the SPRs to migrate, and fixes the problem.

For the migration, I've tested a migration from qemu-2.8.0 and
pseries-2.8.0 to a patched master (qemu-2.11.0-rc1). The received
VTB is 0 (as is it not initialized by qemu-2.8.0), but the value
seems to be ignored by KVM and a non zero VTB is used by the kernel.
I have no explanation for that, but as the original problem appears
only with SMP system under stress I suspect some problems in KVM
(I think because VTB is shared by all threads of a core).

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
6 years agospapr: Implement bug in spapr-vty device to be compatible with PowerVM
David Gibson [Mon, 20 Nov 2017 06:49:25 +0000 (17:49 +1100)]
spapr: Implement bug in spapr-vty device to be compatible with PowerVM

The spapr-vty device implements the PAPR defined virtual console,
which is also implemented by IBM's proprietary PowerVM hypervisor.

PowerVM's implementation has a bug where it inserts an extra \0 after
every \r going to the guest.  Because of that Linux's guest side
driver has a workaround which strips \0 characters that appear
immediately after a \r.

That means that when running under qemu, sending a binary stream from
host to guest via spapr-vty which happens to include a \r\0 sequence
will get corrupted by that workaround.

To deal with that, this patch duplicates PowerVM's bug, inserting an
extra \0 after each \r.  Ugly, but the best option available.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
6 years agohw/ppc/spapr: Fix virtio-scsi bootindex handling for LUNs >= 256
Thomas Huth [Mon, 20 Nov 2017 07:44:38 +0000 (08:44 +0100)]
hw/ppc/spapr: Fix virtio-scsi bootindex handling for LUNs >= 256

LUNs >= 256 have to be encoded with the so-called "flat space
addressing method" for virtio-scsi, where an additional bit has to
be set. SLOF already took care of this with the following commit:

 https://git.qemu.org/?p=SLOF.git;a=commitdiff;h=f72a37713fea47da
 (see https://bugzilla.redhat.com/show_bug.cgi?id=1431584 for details)

But QEMU does not use this encoding yet for device tree paths
that have to be handed over to SLOF to deal with the "bootindex"
property, so SLOF currently fails to boot from virtio-scsi devices
with LUNs >= 256 in the right boot order. Fix it by using the bit
to indicate the "flat space addressing method" for LUNs >= 256.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
6 years agomigration, xen: Fix block image lock issue on live migration
Anthony PERARD [Thu, 16 Nov 2017 15:14:19 +0000 (15:14 +0000)]
migration, xen: Fix block image lock issue on live migration

When doing a live migration of a Xen guest with libxl, the images for
block devices are locked by the original QEMU process, and this prevent
the QEMU at the destination to take the lock and the migration fail.

>From QEMU point of view, once the RAM of a domain is migrated, there is
two QMP commands, "stop" then "xen-save-devices-state", at which point a
new QEMU is spawned at the destination.

Release locks in "xen-save-devices-state" so the destination can takes
them, if it's a live migration.

This patch add the "live" parameter to "xen-save-devices-state" which
default to true so older version of libxenlight can work with newer
version of QEMU.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
6 years agoUpdate version for v2.11.0-rc2 release
Peter Maydell [Tue, 21 Nov 2017 17:50:36 +0000 (17:50 +0000)]
Update version for v2.11.0-rc2 release

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging
Peter Maydell [Tue, 21 Nov 2017 17:05:49 +0000 (17:05 +0000)]
Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging

# gpg: Signature made Tue 21 Nov 2017 17:01:33 GMT
# gpg:                using RSA key 0xBDBE7B27C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg:                 aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg:                 aka "Jeffrey Cody <codyprime@gmail.com>"
# Primary key fingerprint: 9957 4B4D 3474 90E7 9D98  D624 BDBE 7B27 C0DE 3057

* remotes/cody/tags/block-pull-request:
  qemu-iotest: add test for blockjob coroutine race condition
  qemu-iotests: add option in common.qemu for mismatch only
  coroutine: abort if we try to schedule or enter a pending coroutine
  blockjob: do not allow coroutine double entry or entry-after-completion

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoqemu-iotest: add test for blockjob coroutine race condition
Jeff Cody [Sat, 18 Nov 2017 07:00:18 +0000 (02:00 -0500)]
qemu-iotest: add test for blockjob coroutine race condition

Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
6 years agoqemu-iotests: add option in common.qemu for mismatch only
Jeff Cody [Sun, 19 Nov 2017 23:25:50 +0000 (18:25 -0500)]
qemu-iotests: add option in common.qemu for mismatch only

Add option to echo response to QMP / HMP command only on mismatch.

Useful for ignore all normal responses, but catching things like
segfaults.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
6 years agocoroutine: abort if we try to schedule or enter a pending coroutine
Jeff Cody [Sat, 18 Nov 2017 03:27:09 +0000 (22:27 -0500)]
coroutine: abort if we try to schedule or enter a pending coroutine

The previous patch fixed a race condition, in which there were
coroutines being executing doubly, or after coroutine deletion.

We can detect common scenarios when this happens, and print an error
message and abort before we corrupt memory / data, or segfault.

This patch will abort if an attempt to enter a coroutine is made while
it is currently pending execution, either in a specific AioContext bh,
or pending execution via a timer.  It will also abort if a coroutine
is scheduled, before a prior scheduled run has occurred.

We cannot rely on the existing co->caller check for recursive re-entry
to catch this, as the coroutine may run and exit with
COROUTINE_TERMINATE before the scheduled coroutine executes.

(This is the scenario that was occurring and fixed in the previous
patch).

This patch also re-orders the Coroutine struct elements in an attempt to
optimize caching.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
6 years agoblockjob: do not allow coroutine double entry or entry-after-completion
Jeff Cody [Sat, 18 Nov 2017 03:26:16 +0000 (22:26 -0500)]
blockjob: do not allow coroutine double entry or entry-after-completion

When block_job_sleep_ns() is called, the co-routine is scheduled for
future execution.  If we allow the job to be re-entered prior to the
scheduled time, we present a race condition in which a coroutine can be
entered recursively, or even entered after the coroutine is deleted.

The job->busy flag is used by blockjobs when a coroutine is busy
executing. The function 'block_job_enter()' obeys the busy flag,
and will not enter a coroutine if set.  If we sleep a job, we need to
leave the busy flag set, so that subsequent calls to block_job_enter()
are prevented.

This changes the prior behavior of block_job_cancel() being able to
immediately wake up and cancel a job; in practice, this should not be an
issue, as the coroutine sleep times are generally very small, and the
cancel will occur the next time the coroutine wakes up.

This fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1508708

Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
6 years agoMerge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Peter Maydell [Tue, 21 Nov 2017 15:50:13 +0000 (15:50 +0000)]
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches for 2.11.0-rc2

# gpg: Signature made Tue 21 Nov 2017 15:09:12 GMT
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# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
  iotests: Fix 176 on 32-bit host
  block: Close a BlockDriverState completely even when bs->drv is NULL
  block: Error out on load_vm with active dirty bitmaps
  block: Add errp to bdrv_all_goto_snapshot()
  block: Add errp to bdrv_snapshot_goto()
  block: Don't request I/O permission with BDRV_O_NO_IO
  block: Don't use BLK_PERM_CONSISTENT_READ for format probing

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agobuild: disarm the TCG unit test trap
Daniel P. Berrange [Tue, 21 Nov 2017 14:25:38 +0000 (14:25 +0000)]
build: disarm the TCG unit test trap

Developers sometimes mistakenly run 'make test' instead of 'make check'.
'make test' triggers the ancient, unmaintained tcg unit tests in
tests/tcg/Makefile which have long since ceased compiling.

Even if someone fixes the TCG tests, it makes little sense to put
them in a 'make test' target, rather they should be 'make check-tcg',
possibly wired up as a dependency of 'make check'.

In the meantime, this patch disarms the 'make test' trap by simply
deleting it so users get an immediate error. This should be enough
for them to remember to type 'make check' instead (or 'make help'
to learn). It also deletes 'make speed' which is another route
into the tcg tests.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
Message-id: 20171121142538.22072-1-berrange@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'mreitz/tags/pull-block-2017-11-21' into queue-block
Kevin Wolf [Tue, 21 Nov 2017 14:09:54 +0000 (15:09 +0100)]
Merge remote-tracking branch 'mreitz/tags/pull-block-2017-11-21' into queue-block

Block patches for 2.11.0-rc2

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# gpg:                using RSA key F407DB0061D5CF40
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* mreitz/tags/pull-block-2017-11-21:
  iotests: Fix 176 on 32-bit host
  block: Close a BlockDriverState completely even when bs->drv is NULL

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
6 years agoiotests: Fix 176 on 32-bit host
Eric Blake [Fri, 17 Nov 2017 19:04:22 +0000 (13:04 -0600)]
iotests: Fix 176 on 32-bit host

The contents of a qcow2 bitmap are rounded up to a size that
matches the number of bits available for the granularity, but
that granularity differs for 32-bit hosts (our default 64k
cluster allows for 2M bitmap coverage per 'long') and 64-bit
hosts (4M bitmap per 'long').  If the image is a multiple of
2M but not 4M, then the number of bytes occupied by the array
of longs in memory differs between architecture, thus
resulting in different SHA256 hashes.

Furthermore (but untested by me), if our computation of the
SHA256 hash is at all endian-dependent because of how we store
data in memory, that's another variable we'd have to account
for (ideally, we specified the bitmap stored in qcow2 as
fixed-endian on disk, because the same qcow2 file must be
usable across any architecture; but that says nothing about
how we represent things in memory).  But we already have test
165 to validate that bitmaps are stored correctly on disk,
while this test is merely testing that the bitmap exists.

So for this test, the easiest solution is to filter out the
actual hash value.  Broken in commit 4096974e.

Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 20171117190422.23626-1-eblake@redhat.com
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoblock: Close a BlockDriverState completely even when bs->drv is NULL
Alberto Garcia [Mon, 6 Nov 2017 14:53:45 +0000 (16:53 +0200)]
block: Close a BlockDriverState completely even when bs->drv is NULL

bdrv_close() skips much of its logic when bs->drv is NULL. This is
fine when we're closing a BlockDriverState that has just been created
(because e.g the initialization process failed), but it's not enough
in other cases.

For example, when a valid qcow2 image is found to be corrupted then
QEMU marks it as such in the file header and then sets bs->drv to
NULL in order to make the BlockDriverState unusable. When that BDS is
later closed then many of its data structures are not freed (leaking
their memory) and none of its children are detached. This results in
bdrv_close_all() failing to close all BDSs and making this assertion
fail when QEMU is being shut down:

   bdrv_close_all: Assertion `QTAILQ_EMPTY(&all_bdrv_states)' failed.

This patch makes bdrv_close() do the full uninitialization process
in all cases. This fixes the problem with corrupted images and still
works fine with freshly created BDSs.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 20171106145345.12038-1-berto@igalia.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoblock: Error out on load_vm with active dirty bitmaps
Kevin Wolf [Mon, 20 Nov 2017 14:41:31 +0000 (15:41 +0100)]
block: Error out on load_vm with active dirty bitmaps

Loading a snapshot invalidates the bitmap. Just marking all blocks dirty
is not a useful response in practice, instead the user needs to be aware
that we switch to a completely different state. If they are okay with
losing the dirty bitmap, they can just explicitly delete it.

This effectively reverts commit 04dec3c3ae5.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
6 years agoblock: Add errp to bdrv_all_goto_snapshot()
Kevin Wolf [Mon, 20 Nov 2017 14:36:48 +0000 (15:36 +0100)]
block: Add errp to bdrv_all_goto_snapshot()

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
6 years agoblock: Add errp to bdrv_snapshot_goto()
Kevin Wolf [Mon, 20 Nov 2017 14:28:41 +0000 (15:28 +0100)]
block: Add errp to bdrv_snapshot_goto()

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
6 years agoblock: Don't request I/O permission with BDRV_O_NO_IO
Kevin Wolf [Mon, 20 Nov 2017 14:02:48 +0000 (15:02 +0100)]
block: Don't request I/O permission with BDRV_O_NO_IO

'qemu-img info' makes sense even when BLK_PERM_CONSISTENT_READ cannot be
granted because of a block job in a running qemu process. It already
sets BDRV_O_NO_IO to indicate that it doesn't access the guest visible
data at all.

Check the BDRV_O_NO_IO flags in blk_new_open(), so that I/O related
permissions are not unnecessarily requested and 'qemu-img info' can work
even if BLK_PERM_CONSISTENT_READ cannot be granted.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
6 years agoblock: Don't use BLK_PERM_CONSISTENT_READ for format probing
Kevin Wolf [Mon, 20 Nov 2017 13:59:13 +0000 (14:59 +0100)]
block: Don't use BLK_PERM_CONSISTENT_READ for format probing

For format probing, we don't really care whether all of the image
content is consistent. The only thing we're looking at is the image
header, and specifically the magic numbers that are expected to never
change, no matter how inconsistent the guest visible disk content is.

Therefore, don't request BLK_PERM_CONSISTENT_READ. This allows to use
format probing, e.g. in the context of 'qemu-img info', even while the
guest visible data in the image is inconsistent during a running block
job.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
6 years agoUse HTTPS for qemu.org and other domains
Stefan Hajnoczi [Tue, 21 Nov 2017 12:04:35 +0000 (12:04 +0000)]
Use HTTPS for qemu.org and other domains

qemu.org enabled HTTPS in 2017 and it should be used instead of HTTP.
There are also URLs to json.org, openvpn.net, and other domains that
support HTTPS.

This patch updates the qemu.org domains everywhere and also third-party
domains that I have checked.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20171121120435.28728-3-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoUse qemu.org domain name
Stefan Hajnoczi [Tue, 21 Nov 2017 12:04:34 +0000 (12:04 +0000)]
Use qemu.org domain name

The owner of qemu.org has delegated authority to modify DNS records to
the QEMU Project.  This has allowed us to use the domain name without
worries about IP address changes or technical issues disrupting service.
The issues described in commit 859389810910f232188675d2f10b15f1aad77660
("Use qemu-project.org domain name") have therefore been mitigated.

This patch switches back to consistently using qemu.org instead of
qemu-project.org in documentation, version.rc, and the Windows installer
script.

The git submodules and SeaBIOS still use qemu-project.org for the time
being.  This will be fixed in the QEMU 2.12 release cycle.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20171121120435.28728-2-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoscripts/make-release: ship u-boot source as a tarball
Michael Roth [Tue, 7 Nov 2017 20:52:01 +0000 (14:52 -0600)]
scripts/make-release: ship u-boot source as a tarball

The u-boot sources we ship currently cause problems with unpacking on
a case-insensitive filesystem due to path conflicts. This has been
fixed in upstream u-boot via commit 610eec7f, but since it is not
yet included in an official release we implement this approach as a
temporary workaround.

Once we move to a u-boot containing commit 610eec7f we should revert
this patch.

Cc: qemu-stable@nongnu.org
Cc: Alexander Graf <agraf@suse.de>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Thomas Huth <thuth@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-id: 20171107205201.10207-1-mdroth@linux.vnet.ibm.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoaccel/tcg: Handle atomic accesses to notdirty memory correctly
Peter Maydell [Mon, 20 Nov 2017 18:08:28 +0000 (18:08 +0000)]
accel/tcg: Handle atomic accesses to notdirty memory correctly

To do a write to memory that is marked as notdirty, we need
to invalidate any TBs we have cached for that memory, and
update the cpu physical memory dirty flags for VGA and migration.
The slowpath code in notdirty_mem_write() does all this correctly,
but the new atomic handling code in atomic_mmu_lookup() doesn't
do anything at all, it just clears the dirty bit in the TLB.

The effect of this bug is that if the first write to a notdirty
page for which we have cached TBs is by a guest atomic access,
we fail to invalidate the TBs and subsequently will execute
incorrect code. This can be seen by trying to run 'javac' on AArch64.

Use the new notdirty_call_before() and notdirty_call_after()
functions to correctly handle the update to notdirty memory
in the atomic codepath.

Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 1511201308-23580-3-git-send-email-peter.maydell@linaro.org

6 years agoexec.c: Factor out before/after actions for notdirty memory writes
Peter Maydell [Mon, 20 Nov 2017 18:08:27 +0000 (18:08 +0000)]
exec.c: Factor out before/after actions for notdirty memory writes

The function notdirty_mem_write() has a sequence of actions
it has to do before and after the actual business of writing
data to host RAM to ensure that dirty flags are correctly
updated and we flush any TCG translations for the region.
We need to do this also in other places that write directly
to host RAM, most notably the TCG atomic helper functions.
Pull out the before and after pieces into their own functions.

We use an API where the prepare function stashes the various
bits of information about the write into a struct for the
complete function to use, because in the calls for the atomic
helpers the place where the complete function will be called
doesn't have the information to hand.

Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1511201308-23580-2-git-send-email-peter.maydell@linaro.org

6 years agoMerge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2017-11-20-tag' into staging
Peter Maydell [Tue, 21 Nov 2017 11:20:06 +0000 (11:20 +0000)]
Merge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2017-11-20-tag' into staging

qemu-ga patch queue for 2.11

* fix potential overflow in network interface stats reporting

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# gpg:                 aka "Michael Roth <mdroth@utexas.edu>"
# gpg:                 aka "Michael Roth <mdroth@linux.vnet.ibm.com>"
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D  3FA0 3353 C9CE F108 B584

* remotes/mdroth/tags/qga-pull-2017-11-20-tag:
  qga: replace GetIfEntry with GetIfEntry2 for interface stats

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20171120' into staging
Peter Maydell [Tue, 21 Nov 2017 10:44:44 +0000 (10:44 +0000)]
Merge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20171120' into staging

late linux-user fixes for Qemu 2.11

# gpg: Signature made Mon 20 Nov 2017 21:19:00 GMT
# gpg:                using RSA key 0xB44890DEDE3C9BC0
# gpg: Good signature from "Riku Voipio <riku.voipio@iki.fi>"
# gpg:                 aka "Riku Voipio <riku.voipio@linaro.org>"
# Primary key fingerprint: FF82 03C8 C391 98AE 0581  41EF B448 90DE DE3C 9BC0

* remotes/riku/tags/pull-linux-user-20171120:
  linux-user: Fix calculation of auxv length
  linux-user: Handle rt_sigaction correctly for SPARC
  linux-user/sparc: Put address for data faults where linux-user expects it
  linux-user/ppc: Report correct fault address for data faults
  linux-user/s390x: Mask si_addr for SIGSEGV
  linux-user: return EINVAL from prctl(PR_*_SECCOMP)
  linux-user: fix 'finshed' typo in comment
  linux-user/syscall.c: Handle SH4's exceptional alignment for p{read, write}64
  linux-user: Handle TARGET_MAP_STACK and TARGET_MAP_HUGETLB
  linux-user/hppa: Fix TARGET_F_RDLCK, TARGET_F_WRLCK, TARGET_F_UNLCK
  linux-user/hppa: Fix TARGET_MAP_TYPE
  linux-user/hppa: Fix typo for TARGET_NR_epoll_wait
  linux-user/hppa: Fix cpu_clone_regs
  linux-user/hppa: Fix TARGET_SA_* defines
  linux-user: Restrict usage of sa_restorer

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20171120' into...
Peter Maydell [Tue, 21 Nov 2017 09:56:05 +0000 (09:56 +0000)]
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20171120' into staging

target-arm queue:
 * hw/arm: Silence xlnx-ep108 deprecation warning during tests
 * hw/arm/aspeed: Unlock SCU when running kernel
 * arm: check regime, not current state, for ATS write PAR format
 * nvic: Fix ARMv7M MPU_RBAR reads
 * target/arm: Report GICv3 sysregs present in ID registers if needed

# gpg: Signature made Mon 20 Nov 2017 17:35:25 GMT
# gpg:                using RSA key 0x3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20171120:
  hw/arm: Silence xlnx-ep108 deprecation warning during tests
  hw/arm/aspeed: Unlock SCU when running kernel
  arm: check regime, not current state, for ATS write PAR format
  nvic: Fix ARMv7M MPU_RBAR reads
  target/arm: Report GICv3 sysregs present in ID registers if needed

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoqga: replace GetIfEntry with GetIfEntry2 for interface stats
ZhiPeng Lu [Fri, 3 Nov 2017 14:54:20 +0000 (22:54 +0800)]
qga: replace GetIfEntry with GetIfEntry2 for interface stats

The data obtained by GetIfEntry is 32 bits, and it may overflow. Thus
using GetIfEntry2 instead of GetIfEntry.

Signed-off-by: ZhiPeng Lu <lu.zhipeng@zte.com.cn>
*avoid CamelCase variable names
*update field names for MIB_IFROW -> MIB_IF_ROW2
*dynamically probe for GetIfIndex2 to deal with older OSs
*check return value from get_interface_index
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
6 years agoMerge remote-tracking branch 'remotes/cohuck/tags/s390x-20171120-v1' into staging
Peter Maydell [Mon, 20 Nov 2017 18:48:48 +0000 (18:48 +0000)]
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20171120-v1' into staging

Fix storing cpu status (both kvm and tcg), locking around diag 308
(tcg only) and a non-zero variable in the s390-ccw bios.

# gpg: Signature made Mon 20 Nov 2017 15:18:05 GMT
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# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>"
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20171120-v1:
  pc-bios/s390-ccw.img: update image
  pc-bios/s390-ccw: Fix problem with invalid virtio-scsi LUN when rebooting
  s390x/tcg: fix DIAG 308 with > 1 VCPU (MTTCG)
  s390x: fix storing CPU status (again)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.11-20171120' into staging
Peter Maydell [Mon, 20 Nov 2017 18:00:16 +0000 (18:00 +0000)]
Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.11-20171120' into staging

ppc patch queue 2017-11-20

Here's the current queue of ppc patches.  These 2 patches are both
more complex than I'd ideally like this late in the 2.11 cycle.
However, they do fix important bugs, so I think it's worth it on
balance.

# gpg: Signature made Mon 20 Nov 2017 03:27:19 GMT
# gpg:                using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.11-20171120:
  spapr: reset DRCs after devices
  target/ppc: Update setting of cpu features to account for compat modes

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agopc-bios/s390-ccw.img: update image
Cornelia Huck [Mon, 20 Nov 2017 09:48:11 +0000 (10:48 +0100)]
pc-bios/s390-ccw.img: update image

Contains the following commit:
- pc-bios/s390-ccw: Fix problem with invalid virtio-scsi LUN when rebooting

Signed-off-by: Cornelia Huck <cohuck@redhat.com>
6 years agoMerge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging
Peter Maydell [Mon, 20 Nov 2017 14:54:16 +0000 (14:54 +0000)]
Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Mon 20 Nov 2017 03:28:54 GMT
# gpg:                using RSA key 0xEF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
  hw/net/vmxnet3: Fix code to work on big endian hosts, too
  net: Transmit zero UDP checksum as 0xFFFF
  MAINTAINERS: Add missing entry for eepro100 emulation
  hw/net/eepro100: Fix endianness problem on big endian hosts
  Revert "Add new PCI ID for i82559a"
  colo-compare: fix the dangerous assignment

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agolinux-user: Fix calculation of auxv length
Peter Maydell [Tue, 7 Nov 2017 18:25:18 +0000 (18:25 +0000)]
linux-user: Fix calculation of auxv length

In commit 7c4ee5bcc82e643 we changed the order in which we construct
the AUXV, but forgot to adjust the calculation of the length. The
result is that we set info->auxv_len to a bogus and negative value,
and then later on the code in open_self_auxv() gets confused and
ends up presenting the guest with an empty file.

Since we now have to calculate the auxv length up-front as part
of figuring out how much we're going to put on the stack, set
info->auxv_len then; this allows us to assert that we put the
same number of entries into auxv as we pre-calculated, rather
than merely having a comment saying we need to do that.

Fixes: https://bugs.launchpad.net/qemu/+bug/1728116

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
6 years agohw/arm: Silence xlnx-ep108 deprecation warning during tests
Thomas Huth [Thu, 16 Nov 2017 15:29:43 +0000 (16:29 +0100)]
hw/arm: Silence xlnx-ep108 deprecation warning during tests

The new deprecation warning for the xlnx-ep108 machine also pops up
during "make check" which is kind of confusing. Silence it if testing
mode is enabled.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Acked-by: Wei Huang <wei@redhat.com>
Message-id: 1510846183-756-1-git-send-email-thuth@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agohw/arm/aspeed: Unlock SCU when running kernel
Joel Stanley [Tue, 14 Nov 2017 12:20:18 +0000 (22:50 +1030)]
hw/arm/aspeed: Unlock SCU when running kernel

The ASPEED hardware contains a lock register for the SCU that disables
any writes to the SCU when it is locked. The machine comes up with the
lock enabled, but on all known hardware u-boot will unlock it and leave
it unlocked when loading the kernel.

This means the kernel expects the SCU to be unlocked. When booting from
an emulated ROM the normal u-boot unlock path is executed. Things don't
go well when booting using the -kernel command line, as u-boot does not
run first.

Change behaviour so that when a kernel is passed to the machine, set the
reset value of the SCU to be unlocked.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-id: 20171114122018.12204-1-joel@jms.id.au
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoarm: check regime, not current state, for ATS write PAR format
Peter Maydell [Fri, 3 Nov 2017 14:36:54 +0000 (14:36 +0000)]
arm: check regime, not current state, for ATS write PAR format

In do_ats_write(), rather than using extended_addresses_enabled() to
decide whether the value we get back from get_phys_addr() is a 64-bit
format PAR or a 32-bit one, use arm_s1_regime_using_lpae_format().

This is not really the correct answer, because the PAR format
depends on the AT instruction being used, not just on the
translation regime. However getting this correct requires a
significant refactoring, so that get_phys_addr() returns raw
information about the fault which the caller can then assemble
into a suitable FSR/PAR/syndrome for its purposes, rather than
get_phys_addr() returning a pre-formatted FSR.

However this change at least improves the situation by making
the PAR work correctly for address translation operations done
at AArch64 EL2 on the EL2 translation regime. In particular,
this is necessary for Xen to be able to run in our emulation,
so this seems like a safer interim fix given that we are in freeze.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Stefano Stabellini <sstabellini@kernel.org>
Message-id: 1509719814-6191-1-git-send-email-peter.maydell@linaro.org

6 years agonvic: Fix ARMv7M MPU_RBAR reads
Peter Maydell [Fri, 3 Nov 2017 18:13:33 +0000 (18:13 +0000)]
nvic: Fix ARMv7M MPU_RBAR reads

Fix an incorrect mask expression in the handling of v7M MPU_RBAR
reads that meant that we would always report the ADDR field as zero.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1509732813-22957-1-git-send-email-peter.maydell@linaro.org

6 years agotarget/arm: Report GICv3 sysregs present in ID registers if needed
Peter Maydell [Tue, 7 Nov 2017 15:01:38 +0000 (15:01 +0000)]
target/arm: Report GICv3 sysregs present in ID registers if needed

The CPU ID registers ID_AA64PFR0_EL1, ID_PFR1_EL1 and ID_PFR1
have a field for reporting presence of GICv3 system registers.
We need to report this field correctly in order for Xen to
work as a guest inside QEMU emulation. We mustn't incorrectly
claim the sysregs exist when they don't, though, or Linux will
crash.

Unfortunately the way we've designed the GICv3 emulation in QEMU
puts the system registers as part of the GICv3 device, which
may be created after the CPU proper has been realized. This
means that we don't know at the point when we define the ID
registers what the correct value is. Handle this by switching
them to calling a function at runtime to read the value, where
we can fill in the GIC field appropriately.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Stefano Stabellini <sstabellini@kernel.org>
Message-id: 1510066898-3725-1-git-send-email-peter.maydell@linaro.org

6 years agoRevert "cpu-exec: don't overwrite exception_index"
Peter Maydell [Mon, 20 Nov 2017 10:58:27 +0000 (10:58 +0000)]
Revert "cpu-exec: don't overwrite exception_index"

This reverts commit e01cecabf3e04d22340d7e8b3616ef051c42c891,
which breaks booting of aarch64 Linux images.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agopc-bios/s390-ccw: Fix problem with invalid virtio-scsi LUN when rebooting
Thomas Huth [Fri, 17 Nov 2017 18:10:28 +0000 (19:10 +0100)]
pc-bios/s390-ccw: Fix problem with invalid virtio-scsi LUN when rebooting

When rebooting a guest that has a virtio-scsi disk, the s390-ccw
bios sometimes bails out with an error message like this:

! SCSI cannot report LUNs: STATUS=02 RSPN=70 KEY=05 CODE=25 QLFR=00, sure !

Enabling the scsi_req* tracing in QEMU shows that the ccw bios is
trying to execute the REPORT LUNS SCSI command with a LUN != 0, and
this causes the SCSI command to fail.
Looks like we neither clear the BSS of the s390-ccw bios during reboot,
nor do we explicitly set the default_scsi_device.lun value to 0, so
this variable can contain random values from the OS after the reboot.
By setting this variable explicitly to 0, the problem is fixed and
the reboots always succeed.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1514352
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1510942228-22822-1-git-send-email-thuth@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
6 years agos390x/tcg: fix DIAG 308 with > 1 VCPU (MTTCG)
David Hildenbrand [Thu, 16 Nov 2017 17:05:26 +0000 (18:05 +0100)]
s390x/tcg: fix DIAG 308 with > 1 VCPU (MTTCG)

Currently, multi threaded TCG with > 1 VCPU gets stuck during IPL, when
the bios tries to switch to the loaded kernel via DIAG 308.

As run_on_cpu() is used, we run into a deadlock after handling the reset.
We need the iolock (just like KVM).

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20171116170526.12643-4-david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
6 years agos390x: fix storing CPU status (again)
David Hildenbrand [Thu, 16 Nov 2017 17:05:24 +0000 (18:05 +0100)]
s390x: fix storing CPU status (again)

Looks like the last fix + cleanup introduced another bug. (for now Linux
guests don't seem to care) - we store the crs into ars.

Fixes: 947a38bd6f13 ("s390x/kvm: fix and cleanup storing CPU status")
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20171116170526.12643-2-david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
6 years agohw/net/vmxnet3: Fix code to work on big endian hosts, too
Thomas Huth [Tue, 14 Nov 2017 11:20:24 +0000 (12:20 +0100)]
hw/net/vmxnet3: Fix code to work on big endian hosts, too

Since commit ab06ec43577177a442e8 we test the vmxnet3 device in the
pxe-tester, too (when running "make check SPEED=slow"). This now
revealed that the code is not working there if the host is a big
endian machine (for example ppc64 or s390x) - "make check SPEED=slow"
is now failing on such hosts.

The vmxnet3 code lacks endianness conversions in a couple of places.
Interestingly, the bitfields in the structs in vmxnet3.h already tried to
take care of the *bit* endianness of the C compilers - but the code missed
to change the *byte* endianness when reading or writing the corresponding
structs. So the bitfields are now wrapped into unions which allow to change
the byte endianness during runtime with the non-bitfield member of the union.
With these changes, "make check SPEED=slow" now properly works on big endian
hosts, too.

Reported-by: David Gibson <dgibson@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: David Gibson <dgibson@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
6 years agonet: Transmit zero UDP checksum as 0xFFFF
Ed Swierk [Thu, 16 Nov 2017 14:06:06 +0000 (06:06 -0800)]
net: Transmit zero UDP checksum as 0xFFFF

The checksum algorithm used by IPv4, TCP and UDP allows a zero value
to be represented by either 0x0000 and 0xFFFF. But per RFC 768, a zero
UDP checksum must be transmitted as 0xFFFF because 0x0000 is a special
value meaning no checksum.

Substitute 0xFFFF whenever a checksum is computed as zero when
modifying a UDP datagram header. Doing this on IPv4 and TCP checksums
is unnecessary but legal. Add a wrapper for net_checksum_finish() that
makes the substitution.

(We can't just change net_checksum_finish(), as that function is also
used by receivers to verify checksums, and in that case the expected
value is always 0x0000.)

Signed-off-by: Ed Swierk <eswierk@skyportsystems.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
6 years agoMAINTAINERS: Add missing entry for eepro100 emulation
Stefan Weil [Thu, 16 Nov 2017 19:49:02 +0000 (20:49 +0100)]
MAINTAINERS: Add missing entry for eepro100 emulation

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Jason Wang <jasowang@redhat.com>
6 years agohw/net/eepro100: Fix endianness problem on big endian hosts
Thomas Huth [Thu, 16 Nov 2017 21:16:54 +0000 (22:16 +0100)]
hw/net/eepro100: Fix endianness problem on big endian hosts

Since commit 1865e288a823c764cd4344d ("Fix eepro100 simple transmission
mode"), the test/pxe-test is broken for the eepro100 device on big
endian hosts. However, it seems like that commit did not introduce the
problem, but just uncovered it: The EEPRO100State->tx.tbd_array_addr and
EEPRO100State->tx.tcb_bytes fields are already in host byte order, since
they have already been byte-swapped in the read_cb() function.
Thus byte-swapping them in tx_command() again results in the wrong
endianness. Removing the byte-swapping here fixes the pxe-test.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
6 years agoRevert "Add new PCI ID for i82559a"
Jason Wang [Thu, 16 Nov 2017 12:20:06 +0000 (20:20 +0800)]
Revert "Add new PCI ID for i82559a"

This reverts commit 5e89dc01133f8f5e621f6b66b356c6f37d31dafb since:

- we should use ID in the spec instead the one used by OEM
- in the future, we should allow changing id through either property
  or EEPROM file.

Cc: Stefan Weil <sw@weilnetz.de>
Cc: Michael Nawrocki <michael.nawrocki@gtri.gatech.edu>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Jason Wang <jasowang@redhat.com>
6 years agocolo-compare: fix the dangerous assignment
Mao Zhongyi [Thu, 16 Nov 2017 02:28:32 +0000 (10:28 +0800)]
colo-compare: fix the dangerous assignment

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Zhang Chen <zhangckid@gmail.com>
Cc: Li Zhijian <lizhijian@cn.fujitsu.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Fixes: 8ec14402029d783720f4312ed8a925548e1dad61
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
6 years agospapr: reset DRCs after devices
Greg Kurz [Fri, 17 Nov 2017 12:56:48 +0000 (13:56 +0100)]
spapr: reset DRCs after devices

A DRC with a pending unplug request releases its associated device at
machine reset time.

In the case of LMB, when all DRCs for a DIMM device have been reset,
the DIMM gets unplugged, causing guest memory to disappear. This may
be very confusing for anything still using this memory.

This is exactly what happens with vhost backends, and QEMU aborts
with:

qemu-system-ppc64: used ring relocated for ring 2
qemu-system-ppc64: qemu/hw/virtio/vhost.c:649: vhost_commit: Assertion
 `r >= 0' failed.

The issue is that each DRC registers a QEMU reset handler, and we
don't control the order in which these handlers are called (ie,
a LMB DRC will unplug a DIMM before the virtio device using the
memory on this DIMM could stop its vhost backend).

To avoid such situations, let's reset DRCs after all devices
have been reset.

Reported-by: Mallesh N. Koti <mallesh@linux.vnet.ibm.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
6 years agotarget/ppc: Update setting of cpu features to account for compat modes
Suraj Jitindar Singh [Fri, 17 Nov 2017 05:39:00 +0000 (16:39 +1100)]
target/ppc: Update setting of cpu features to account for compat modes

The device tree nodes ibm,arch-vec-5-platform-support and ibm,pa-features
are used to communicate features of the cpu to the guest operating
system. The properties of each of these are determined based on the
selected cpu model and the availability of hypervisor features.
Currently the compatibility mode of the cpu is not taken into account.

The ibm,arch-vec-5-platform-support node is used to communicate the
level of support for various ISAv3 processor features to the guest
before CAS to inform the guests' request. The available mmu mode should
only be hash unless the cpu is a POWER9 which is not in a prePOWER9
compat mode, in which case the available modes depend on the
accelerator and the hypervisor capabilities.

The ibm,pa-featues node is used to communicate the level of cpu support
for various features to the guest os. This should only contain features
relevant to the operating mode of the processor, that is the selected
cpu model taking into account any compat mode. This means that the
compat mode should be taken into account when choosing the properties of
ibm,pa-features and they should match the compat mode selected, or the
cpu model selected if no compat mode.

Update the setting of these cpu features in the device tree as described
above to properly take into account any compat mode. We use the
ppc_check_compat function which takes into account the current processor
model and the cpu compat mode.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
6 years agoMerge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Peter Maydell [Fri, 17 Nov 2017 19:08:07 +0000 (19:08 +0000)]
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches for 2.11.0-rc2

# gpg: Signature made Fri 17 Nov 2017 17:58:36 GMT
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (25 commits)
  iotests: Make 087 pass without AIO enabled
  block: Make bdrv_next() keep strong references
  qcow2: Fix overly broad madvise()
  qcow2: Refuse to get unaligned offsets from cache
  qcow2: Add bounds check to get_refblock_offset()
  block: Guard against NULL bs->drv
  qcow2: Unaligned zero cluster in handle_alloc()
  qcow2: check_errors are fatal
  qcow2: reject unaligned offsets in write compressed
  iotests: Add test for failing qemu-img commit
  tests: Add check-qobject for equality tests
  iotests: Add test for non-string option reopening
  block: qobject_is_equal() in bdrv_reopen_prepare()
  qapi: Add qobject_is_equal()
  qapi/qlist: Add qlist_append_null() macro
  qapi/qnull: Add own header
  qcow2: fix image corruption on commit with persistent bitmap
  iotests: test clearing unknown autoclear_features by qcow2
  block: Fix permissions in image activation
  qcow2: fix image corruption after committing qcow2 image into base
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'mreitz/tags/pull-block-2017-11-17' into queue-block
Kevin Wolf [Fri, 17 Nov 2017 17:24:30 +0000 (18:24 +0100)]
Merge remote-tracking branch 'mreitz/tags/pull-block-2017-11-17' into queue-block

Block patches for 2.11.0-rc2

# gpg: Signature made Fri Nov 17 18:22:07 2017 CET
# gpg:                using RSA key F407DB0061D5CF40
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* mreitz/tags/pull-block-2017-11-17:
  iotests: Make 087 pass without AIO enabled
  block: Make bdrv_next() keep strong references
  qcow2: Fix overly broad madvise()
  qcow2: Refuse to get unaligned offsets from cache
  qcow2: Add bounds check to get_refblock_offset()
  block: Guard against NULL bs->drv
  qcow2: Unaligned zero cluster in handle_alloc()
  qcow2: check_errors are fatal
  qcow2: reject unaligned offsets in write compressed
  iotests: Add test for failing qemu-img commit
  tests: Add check-qobject for equality tests
  iotests: Add test for non-string option reopening
  block: qobject_is_equal() in bdrv_reopen_prepare()
  qapi: Add qobject_is_equal()
  qapi/qlist: Add qlist_append_null() macro
  qapi/qnull: Add own header

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
6 years agoiotests: Make 087 pass without AIO enabled
Max Reitz [Wed, 15 Nov 2017 18:07:32 +0000 (19:07 +0100)]
iotests: Make 087 pass without AIO enabled

If AIO has not been enabled in the qemu build that is to be tested, we
should skip the "aio=native without O_DIRECT" test instead of failing.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171115180732.31753-1-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoblock: Make bdrv_next() keep strong references
Max Reitz [Fri, 10 Nov 2017 17:25:45 +0000 (18:25 +0100)]
block: Make bdrv_next() keep strong references

On one hand, it is a good idea for bdrv_next() to return a strong
reference because ideally nearly every pointer should be refcounted.
This fixes intermittent failure of iotest 194.

On the other, it is absolutely necessary for bdrv_next() itself to keep
a strong reference to both the BB (in its first phase) and the BDS (at
least in the second phase) because when called the next time, it will
dereference those objects to get a link to the next one.  Therefore, it
needs these objects to stay around until then.  Just storing the pointer
to the next in the iterator is not really viable because that pointer
might become invalid as well.

Both arguments taken together means we should probably just invoke
bdrv_ref() and blk_ref() in bdrv_next().  This means we have to assert
that bdrv_next() is always called from the main loop, but that was
probably necessary already before this patch and judging from the
callers, it also looks to actually be the case.

Keeping these strong references means however that callers need to give
them up if they decide to abort the iteration early.  They can do so
through the new bdrv_next_cleanup() function.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171110172545.32609-1-mreitz@redhat.com
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoqcow2: Fix overly broad madvise()
Max Reitz [Tue, 14 Nov 2017 18:41:27 +0000 (19:41 +0100)]
qcow2: Fix overly broad madvise()

@mem_size and @offset are both size_t, thus subtracting them from one
another will just return a big size_t if mem_size < offset -- even more
obvious here because the result is stored in another size_t.

Checking that result to be positive is therefore not sufficient to
exclude the case that offset > mem_size.  Thus, we currently sometimes
issue an madvise() over a very large address range.

This is triggered by iotest 163, but with -m64, this does not result in
tangible problems.  But with -m32, this test produces three segfaults,
all of which are fixed by this patch.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171114184127.24238-1-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoqcow2: Refuse to get unaligned offsets from cache
Max Reitz [Fri, 10 Nov 2017 20:31:11 +0000 (21:31 +0100)]
qcow2: Refuse to get unaligned offsets from cache

Instead of using an assertion, it is better to emit a corruption event
here.  Checking all offsets for correct alignment can be tedious and it
is easily possible to forget to do so.  qcow2_cache_do_get() is a
function every L2 and refblock access has to go through, so this is a
good central point to add such a check.

And for good measure, let us also add an assertion that the offset is
non-zero.  Making this a corruption event is not feasible, because a
zero offset usually means something special (such as the cluster is
unused), so all callers should be checking this anyway.  If they do not,
it is their fault, hence the assertion here.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171110203111.7666-6-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoqcow2: Add bounds check to get_refblock_offset()
Max Reitz [Fri, 10 Nov 2017 20:31:10 +0000 (21:31 +0100)]
qcow2: Add bounds check to get_refblock_offset()

Reported-by: R. Nageswara Sastry <nasastry@in.ibm.com>
Buglink: https://bugs.launchpad.net/qemu/+bug/1728661
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171110203111.7666-5-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoblock: Guard against NULL bs->drv
Max Reitz [Fri, 10 Nov 2017 20:31:09 +0000 (21:31 +0100)]
block: Guard against NULL bs->drv

We currently do not guard everywhere against a NULL bs->drv where we
should be doing so.  Most of the places fixed here just do not care
about that case at all.

Some care implicitly, e.g. through a prior function call to
bdrv_getlength() which would always fail for an ejected BDS.  Add an
assert there to make it more obvious.

Other places seem to care, but do so insufficiently: Freeing clusters in
a qcow2 image is an error-free operation, but it may leave the image in
an unusable state anyway.  Giving qcow2_free_clusters() an error code is
not really viable, it is much easier to note that bs->drv may be NULL
even after a successful driver call.  This concerns bdrv_co_flush(), and
the way the check is added to bdrv_co_pdiscard() (in every iteration
instead of only once).

Finally, some places employ at least an assert(bs->drv); somewhere, that
may be reasonable (such as in the reopen code), but in
bdrv_has_zero_init(), it is definitely not.  Returning 0 there in case
of an ejected BDS saves us much headache instead.

Reported-by: R. Nageswara Sastry <nasastry@in.ibm.com>
Buglink: https://bugs.launchpad.net/qemu/+bug/1728660
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171110203111.7666-4-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoqcow2: Unaligned zero cluster in handle_alloc()
Max Reitz [Fri, 10 Nov 2017 20:31:08 +0000 (21:31 +0100)]
qcow2: Unaligned zero cluster in handle_alloc()

We should check whether the cluster offset we are about to use is
actually valid; that is, whether it is aligned to cluster boundaries.

Reported-by: R. Nageswara Sastry <nasastry@in.ibm.com>
Buglink: https://bugs.launchpad.net/qemu/+bug/1728643
Buglink: https://bugs.launchpad.net/qemu/+bug/1728657
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171110203111.7666-3-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoqcow2: check_errors are fatal
Max Reitz [Fri, 10 Nov 2017 20:31:07 +0000 (21:31 +0100)]
qcow2: check_errors are fatal

When trying to repair a dirty image, qcow2_check() may apparently
succeed (no really fatal error occurred that would prevent the check
from continuing), but if check_errors in the result object is non-zero,
we cannot trust the image to be usable.

Reported-by: R. Nageswara Sastry <nasastry@in.ibm.com>
Buglink: https://bugs.launchpad.net/qemu/+bug/1728639
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171110203111.7666-2-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoqcow2: reject unaligned offsets in write compressed
Anton Nefedov [Tue, 14 Nov 2017 10:16:49 +0000 (13:16 +0300)]
qcow2: reject unaligned offsets in write compressed

Misaligned compressed write is not supported.

Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Message-id: 1510654613-47868-2-git-send-email-anton.nefedov@virtuozzo.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoiotests: Add test for failing qemu-img commit
Max Reitz [Fri, 16 Jun 2017 13:58:47 +0000 (15:58 +0200)]
iotests: Add test for failing qemu-img commit

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170616135847.17726-1-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agotests: Add check-qobject for equality tests
Max Reitz [Tue, 14 Nov 2017 18:01:28 +0000 (19:01 +0100)]
tests: Add check-qobject for equality tests

Add a new test file (check-qobject.c) for unit tests that concern
QObjects as a whole.

Its only purpose for now is to test the qobject_is_equal() function.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171114180128.17076-7-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoiotests: Add test for non-string option reopening
Max Reitz [Tue, 14 Nov 2017 18:01:27 +0000 (19:01 +0100)]
iotests: Add test for non-string option reopening

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20171114180128.17076-6-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoblock: qobject_is_equal() in bdrv_reopen_prepare()
Max Reitz [Tue, 14 Nov 2017 18:01:26 +0000 (19:01 +0100)]
block: qobject_is_equal() in bdrv_reopen_prepare()

Currently, bdrv_reopen_prepare() assumes that all BDS options are
strings. However, this is not the case if the BDS has been created
through the json: pseudo-protocol or blockdev-add.

Note that the user-invokable reopen command is an HMP command, so you
can only specify strings there. Therefore, specifying a non-string
option with the "same" value as it was when originally created will now
return an error because the values are supposedly similar (and there is
no way for the user to circumvent this but to just not specify the
option again -- however, this is still strictly better than just
crashing).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20171114180128.17076-5-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoqapi: Add qobject_is_equal()
Max Reitz [Tue, 14 Nov 2017 18:01:25 +0000 (19:01 +0100)]
qapi: Add qobject_is_equal()

This generic function (along with its implementations for different
types) determines whether two QObjects are equal.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20171114180128.17076-4-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoqapi/qlist: Add qlist_append_null() macro
Max Reitz [Tue, 14 Nov 2017 18:01:24 +0000 (19:01 +0100)]
qapi/qlist: Add qlist_append_null() macro

Besides the macro itself, this patch also adds a corresponding
Coccinelle rule.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-id: 20171114180128.17076-3-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoqapi/qnull: Add own header
Max Reitz [Tue, 14 Nov 2017 18:01:23 +0000 (19:01 +0100)]
qapi/qnull: Add own header

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20171114180128.17076-2-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
6 years agoqcow2: fix image corruption on commit with persistent bitmap
Eric Blake [Fri, 17 Nov 2017 16:47:47 +0000 (10:47 -0600)]
qcow2: fix image corruption on commit with persistent bitmap

If an image contains persistent bitmaps, we cannot use the
fast path of bdrv_make_empty() to clear the image during
qemu-img commit, because that will lose the clusters related
to the bitmaps.

Also leave a comment in qcow2_read_extensions to remind future
feature additions to think about fast-path removal, since we
just barely fixed the same bug for LUKS encryption.

It's a pain that qemu-img has not yet been taught to manipulate,
or even at a very minimum display, information about persistent
bitmaps; instead, we have to use QMP commands.  It's also a
pain that only qeury-block and x-debug-block-dirty-bitmap-sha256
will allow bitmap introspection; but the former requires the
node to be hooked to a block device, and the latter is experimental.

Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
6 years agoiotests: test clearing unknown autoclear_features by qcow2
Vladimir Sementsov-Ogievskiy [Fri, 10 Nov 2017 17:54:57 +0000 (20:54 +0300)]
iotests: test clearing unknown autoclear_features by qcow2

Test clearing unknown autoclear_features by qcow2 on incoming
migration.

[ kwolf: Fixed wait for destination VM startup ]

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
6 years agoblock: Fix permissions in image activation
Kevin Wolf [Thu, 16 Nov 2017 12:00:01 +0000 (13:00 +0100)]
block: Fix permissions in image activation

Inactive images generally request less permissions for their image files
than they would if they were active (in particular, write permissions).
Activating the image involves extending the permissions, therefore.

drv->bdrv_invalidate_cache() can already require write access to the
image file, so we have to update the permissions earlier than that.
The current code does it only later, so we have to move up this part.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
6 years agoMerge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2017-11-17' into staging
Peter Maydell [Fri, 17 Nov 2017 15:30:20 +0000 (15:30 +0000)]
Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2017-11-17' into staging

nbd patches for 2017-11-17

Eric Blake - nbd: Don't crash when server reports NBD_CMD_READ failure
Eric Blake - nbd/client: Use error_prepend() correctly
Eric Blake - nbd/client: Don't hard-disconnect on ESHUTDOWN from server
Eric Blake - nbd/server: Fix error reporting for bad requests

# gpg: Signature made Fri 17 Nov 2017 14:53:30 GMT
# gpg:                using RSA key 0xA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>"
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>"
# gpg:                 aka "[jpeg image of size 6874]"
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-nbd-2017-11-17:
  nbd/server: Fix error reporting for bad requests
  nbd/client: Don't hard-disconnect on ESHUTDOWN from server
  nbd/client: Use error_prepend() correctly
  nbd: Don't crash when server reports NBD_CMD_READ failure

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agonbd/server: Fix error reporting for bad requests
Eric Blake [Wed, 15 Nov 2017 21:35:56 +0000 (15:35 -0600)]
nbd/server: Fix error reporting for bad requests

The NBD spec says an attempt to NBD_CMD_TRIM on a read-only
export should fail with EPERM, as a trim has the potential
to change disk contents, but we were relying on the block
layer to catch that for us, which might not always give the
right error (and even if it does, it does not let us pass
back a sane message for structured replies).

The NBD spec says an attempt to NBD_CMD_WRITE_ZEROES out of
bounds should fail with ENOSPC, not EINVAL.

Our check for u64 offset + u32 length wraparound up front is
pointless; nothing uses offset until after the second round
of sanity checks, and we can just as easily ensure there is
no wraparound by checking whether offset is in bounds (since
a disk size cannot exceed off_t which is 63 bits, adding a
32-bit number for a valid offset can't overflow).  Bonus:
dropping the up-front check lets us keep the connection alive
after NBD_CMD_WRITE, whereas before we would drop the
connection (of course, any client sending a packet that would
trigger the failure is already buggy, so it's also okay to
drop the connection, but better quality-of-implementation
never hurts).

Solve all of these issues by some code motion and improved
request validation.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171115213557.3548-1-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
6 years agonbd/client: Don't hard-disconnect on ESHUTDOWN from server
Eric Blake [Mon, 13 Nov 2017 19:48:57 +0000 (13:48 -0600)]
nbd/client: Don't hard-disconnect on ESHUTDOWN from server

The NBD spec says that a server may fail any transmission request
with ESHUTDOWN when it is apparent that no further request from
the client can be successfully honored.  The client is supposed
to then initiate a soft shutdown (wait for all remaining in-flight
requests to be answered, then send NBD_CMD_DISC).  However, since
qemu's server never uses ESHUTDOWN errors, this code was mostly
untested since its introduction in commit b6f5d3b5.

More recently, I learned that nbdkit as the NBD server is able to
send ESHUTDOWN errors, so I finally tested this code, and noticed
that our client was special-casing ESHUTDOWN to cause a hard
shutdown (immediate disconnect, with no NBD_CMD_DISC), but only
if the server sends this error as a simple reply.  Further
investigation found that commit d2febedb introduced a regression
where structured replies behave differently than simple replies -
but that the structured reply behavior is more in line with the
spec (even if we still lack code in nbd-client.c to properly quit
sending further requests).  So this patch reverts the portion of
b6f5d3b5 that introduced an improper hard-disconnect special-case
at the lower level, and leaves the future enhancement of a nicer
soft-disconnect at the higher level for another day.

CC: qemu-stable@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171113194857.13933-1-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
6 years agonbd/client: Use error_prepend() correctly
Eric Blake [Mon, 13 Nov 2017 15:24:24 +0000 (09:24 -0600)]
nbd/client: Use error_prepend() correctly

When using error prepend(), it is necessary to end with a space
in the format string; otherwise, messages come out incorrectly,
such as when connecting to a socket that hangs up immediately:

can't open device nbd://localhost:10809/: Failed to read dataUnexpected end-of-file before all bytes were read

Originally botched in commit e44ed99d, then several more instances
added in the meantime.

Pre-existing and not fixed here: we are inconsistent on capitalization;
some of our messages start with lower case, and others start with upper,
although the use of error_prepend() is much nicer to read when all
fragments consistently start with lower.

CC: qemu-stable@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171113152424.25381-1-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
6 years agonbd: Don't crash when server reports NBD_CMD_READ failure
Eric Blake [Sun, 12 Nov 2017 01:39:36 +0000 (19:39 -0600)]
nbd: Don't crash when server reports NBD_CMD_READ failure

If a server fails a read, for example with EIO, but the connection
is still live, then we would crash trying to print a non-existent
error message in nbd_client_co_preadv().  For consistency, also
change the error printout in nbd_read_reply_entry(), although that
instance does not crash.  Bug introduced in commit f140e300.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171112013936.5942-1-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
6 years agoqcow2: fix image corruption after committing qcow2 image into base
Daniel P. Berrange [Fri, 17 Nov 2017 11:29:13 +0000 (11:29 +0000)]
qcow2: fix image corruption after committing qcow2 image into base

After committing the qcow2 image contents into the base image, qemu-img
will call bdrv_make_empty to drop the payload in the layered image.

When this is done for qcow2 images, it blows away the LUKS encryption
header, making the resulting image unusable. There are two codepaths
for emptying a qcow2 image, and the second (slower) codepath leaves
the LUKS header intact, so force use of that codepath.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
6 years agoblock: Deprecate bdrv_set_read_only() and users
Kevin Wolf [Tue, 7 Nov 2017 17:21:41 +0000 (18:21 +0100)]
block: Deprecate bdrv_set_read_only() and users

bdrv_set_read_only() is used by some block drivers to override the
read-only option given by the user. This is not how read-only images
generally work in QEMU: Instead of second guessing what the user really
meant (which currently includes making an image read-only even if the
user didn't only use the default, but explicitly said read-only=off), we
should error out if we can't provide what the user requested.

This adds deprecation warnings to all callers of bdrv_set_read_only() so
that the behaviour can be corrected after the usual deprecation period.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
6 years agoqcow2: don't permit changing encryption parameters
Daniel P. Berrange [Fri, 3 Nov 2017 14:39:02 +0000 (14:39 +0000)]
qcow2: don't permit changing encryption parameters

Currently if trying to change encryption parameters on a qcow2 image, qemu-img
will abort. We already explicitly check for attempt to change encrypt.format
but missed other parameters like encrypt.key-secret. Rather than list each
parameter, just blacklist changing of all parameters with a 'encrypt.' prefix.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
6 years agoblock: Fix error path in bdrv_backing_update_filename()
Kevin Wolf [Mon, 6 Nov 2017 16:52:58 +0000 (17:52 +0100)]
block: Fix error path in bdrv_backing_update_filename()

error_setg_errno() takes a positive errno code. Spotted by Coverity
(CID 1381628).

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
6 years agoqemu-iotests: Use -nographic in 182
Kevin Wolf [Sun, 29 Oct 2017 12:49:22 +0000 (13:49 +0100)]
qemu-iotests: Use -nographic in 182

This avoids that random UI frontend error messages end up in the output.
In particular, we were seeing this line in CI error logs:

+Unable to init server: Could not connect: Connection refused

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
6 years agoreplication: Fix replication open fail
Wang Guang [Wed, 25 Oct 2017 06:51:23 +0000 (14:51 +0800)]
replication: Fix replication open fail

replication_child_perm request write
permissions for all child which will lead bdrv_check_perm fail.
replication_child_perm() should request write
permissions only if it is writable itself.

Signed-off-by: Wang Guang <wang.guang55@zte.com.cn>
Signed-off-by: Wang Yong <wang.yong155@zte.com.cn>
Reviewed-by: Xie Changlong <xiechanglong@cmss.chinamobile.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
6 years agoMerge remote-tracking branch 'remotes/kraxel/tags/ui-20171117-pull-request' into...
Peter Maydell [Fri, 17 Nov 2017 10:18:41 +0000 (10:18 +0000)]
Merge remote-tracking branch 'remotes/kraxel/tags/ui-20171117-pull-request' into staging

sdl2 fixes for 2.11

# gpg: Signature made Fri 17 Nov 2017 10:06:27 GMT
# gpg:                using RSA key 0x4CB6D8EED3E87138
# 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>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/ui-20171117-pull-request:
  sdl2: Fix broken display updating after the window is hidden
  sdl2: Do not leave grab when fullscreen
  sdl2: Fix dead keyboard after fullsceen
  sdl2: Use the same pointer show/hide logic for absolute and relative mode
  sdl2: Do not quit the emulator when an auxilliary window is closed

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
Peter Maydell [Thu, 16 Nov 2017 19:06:07 +0000 (19:06 +0000)]
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc, pci, virtio: fixes for rc1

A bunch of fixes all over the place.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Thu 16 Nov 2017 16:37:21 GMT
# gpg:                using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  tests/bios-tables-test: Fix endianess problems when passing data to iasl
  build-sys: restrict vmcoreinfo to fw_cfg+dma capable targets
  vmcoreinfo: put it in the 'misc' device category
  NUMA: Enable adding NUMA node implicitly
  tests/acpi-test-data: update _CRS in DSDT
  hw/pcie-pci-bridge: restrict to X86 and ARM
  hw/pci-host: Fix x86 Host Bridges 64bit PCI hole
  pci: Initialize pci_dev->name before use
  fix: unrealize virtio device if we fail to hotplug it

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agoMerge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
Peter Maydell [Thu, 16 Nov 2017 17:26:43 +0000 (17:26 +0000)]
Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

# gpg: Signature made Thu 16 Nov 2017 16:36:02 GMT
# gpg:                using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  throttle-groups: forget timer and schedule next TGM on detach

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
6 years agotests/bios-tables-test: Fix endianess problems when passing data to iasl
Thomas Huth [Thu, 16 Nov 2017 12:17:02 +0000 (13:17 +0100)]
tests/bios-tables-test: Fix endianess problems when passing data to iasl

The bios-tables-test was writing out files that we pass to iasl in
with the wrong endianness in the header when running on a big endian
host. So instead of storing mixed endian information in our structures,
let's keep everything in little endian and byte-swap it only when we
need a value in the code.

Reported-by: Daniel P. Berrange <berrange@redhat.com>
Buglink: https://bugs.launchpad.net/qemu/+bug/1724570
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Tested-by: "Daniel P. Berrange" <berrange@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>