aio-wait: avoid AioContext lock in aio_wait_bh_oneshot()

There is no need for the AioContext lock in aio_wait_bh_oneshot().
It's easy to remove the lock from existing callers and then switch from
AI

aio-wait: avoid AioContext lock in aio_wait_bh_oneshot()

There is no need for the AioContext lock in aio_wait_bh_oneshot().
It's easy to remove the lock from existing callers and then switch from
AIO_WAIT_WHILE() to AIO_WAIT_WHILE_UNLOCKED() in aio_wait_bh_oneshot().

Document that the AioContext lock should not be held across
aio_wait_bh_oneshot(). Holding a lock across aio_poll() can cause
deadlock so we don't want callers to do that.

This is a step towards getting rid of the AioContext lock.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230404153307.458883-1-stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

aio_wait_kick: add missing memory barrier

It seems that aio_wait_kick always required a memory barrier
or atomic operation in the caller, but nobody actually
took care of doing it.

Let's put the ba

aio_wait_kick: add missing memory barrier

It seems that aio_wait_kick always required a memory barrier
or atomic operation in the caller, but nobody actually
took care of doing it.

Let's put the barrier in the function instead, and pair it
with another one in AIO_WAIT_WHILE. Read aio_wait_kick()
comment for further explanation.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20220524173054.12651-1-eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-for-5.2-pull-request' into staging

Trivial Patches Pull request 20200928

# gpg: Signature made Mon 28 Sep 2020 10:1

Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-for-5.2-pull-request' into staging

Trivial Patches Pull request 20200928

# gpg: Signature made Mon 28 Sep 2020 10:15:00 BST
# gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg: issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/trivial-branch-for-5.2-pull-request:
docs/system/deprecated: Move lm32 and unicore32 to the right section
migration/multifd: Remove superfluous semicolons
timer: Fix timer_mod_anticipate() documentation
vhost-vdpa: remove useless variable
Add *.pyc back to the .gitignore file
virtio: vdpa: omit check return of g_malloc
meson: fix static flag summary
vhost-vdpa: fix indentation in vdpa_ops

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

show more ...

Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Pull request

This includes the atomic_ -> qatomic_ rename that touches many files and is
pro

Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Pull request

This includes the atomic_ -> qatomic_ rename that touches many files and is
prone to conflicts.

# gpg: Signature made Wed 23 Sep 2020 17:08:43 BST
# gpg: using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
qemu/atomic.h: rename atomic_ to qatomic_
tests: add test-fdmon-epoll
fdmon-poll: reset npfd when upgrading to fdmon-epoll
gitmodules: add qemu.org vbootrom submodule
gitmodules: switch to qemu.org meson mirror
gitmodules: switch to qemu.org qboot mirror
docs/system: clarify deprecation schedule
virtio-crypto: don't modify elem->in/out_sg
virtio-blk: undo destructive iov_discard_*() operations
util/iov: add iov_discard_undo()
virtio: add vhost-user-fs-ccw device
libvhost-user: handle endianness as mandated by the spec
MAINTAINERS: add Stefan Hajnoczi as block/nvme.c maintainer

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

show more ...

qemu/atomic.h: rename atomic_ to qatomic_

clang's C11 atomic_fetch_*() functions only take a C11 atomic type
pointer argument. QEMU uses direct types (int, etc) and this causes a
com

qemu/atomic.h: rename atomic_ to qatomic_

clang's C11 atomic_fetch_*() functions only take a C11 atomic type
pointer argument. QEMU uses direct types (int, etc) and this causes a
compiler error when a QEMU code calls these functions in a source file
that also included <stdatomic.h> via a system header file:

$ CC=clang CXX=clang++ ./configure ... && make
../util/async.c:79:17: error: address argument to atomic operation must be a pointer to _Atomic type ('unsigned int *' invalid)

Avoid using atomic_*() names in QEMU's atomic.h since that namespace is
used by <stdatomic.h>. Prefix QEMU's APIs with 'q' so that atomic.h
and <stdatomic.h> can co-exist. I checked /usr/include on my machine and
searched GitHub for existing "qatomic_" users but there seem to be none.

This patch was generated using:

$ git grep -h -o '\<atomic\(64\)\?_[a-z0-9_]\+' include/qemu/atomic.h | \
sort -u >/tmp/changed_identifiers
$ for identifier in $(</tmp/changed_identifiers); do
sed -i "s%\<$identifier\>%q$identifier%g" \
$(git grep -I -l "\<$identifier\>")
done

I manually fixed line-wrap issues and misaligned rST tables.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200923105646.47864-1-stefanha@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/otubo/tags/pull-seccomp-20180926' into staging

pull-seccomp-20180926

# gpg: Signature made Wed 26 Sep 2018 14:20:06 BST
# gpg:

Merge remote-tracking branch 'remotes/otubo/tags/pull-seccomp-20180926' into staging

pull-seccomp-20180926

# gpg: Signature made Wed 26 Sep 2018 14:20:06 BST
# gpg: using RSA key DF32E7C0F0FFF9A2
# gpg: Good signature from "Eduardo Otubo (Senior Software Engineer) <otubo@redhat.com>"
# Primary key fingerprint: D67E 1B50 9374 86B4 0723 DBAB DF32 E7C0 F0FF F9A2

* remotes/otubo/tags/pull-seccomp-20180926:
seccomp: check TSYNC host capability

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

show more ...

Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-3.1-pull-request' into staging

- some fixes for setrlimit() and write()
- fixes ELF loader when host page size is greate

Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-3.1-pull-request' into staging

- some fixes for setrlimit() and write()
- fixes ELF loader when host page size is greater than target page size
- add SO_LINGER to getsockopt()/setsockopt()
- move TargetFdTrans from syscall.c
v2: add "#include <linux/netlink.h>" in linux-user/fd-trans.c

# gpg: Signature made Tue 25 Sep 2018 21:51:13 BST
# gpg: using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg: aka "Laurent Vivier <laurent@vivier.eu>"
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-3.1-pull-request:
linux-user: do setrlimit selectively
linux-user: write(fd, NULL, 0) parity with linux's treatment of same
linux-user: elf: mmap all the target-pages of hostpage for data segment
linux-user: add SO_LINGER to {g,s}etsockopt
linux-user: move TargetFdTrans functions to their own file

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

show more ...

Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2018-09-25' into staging

- Deprecate the usage of a network backend via "name" instead of "id"
- Deprecate the "enforc

Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2018-09-25' into staging

- Deprecate the usage of a network backend via "name" instead of "id"
- Deprecate the "enforce-config-section" machine parameter
- Re-enable the wdt_ib700, endianness and vmxnet3 qtests
- Some trivial fixes and doc update patches that crossed my way

# gpg: Signature made Tue 25 Sep 2018 16:58:42 BST
# gpg: using RSA key 2ED9D774FE702DB5
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>"
# gpg: aka "Thomas Huth <thuth@redhat.com>"
# gpg: aka "Thomas Huth <huth@tuxfamily.org>"
# gpg: aka "Thomas Huth <th.huth@posteo.de>"
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5

* remotes/huth-gitlab/tags/pull-request-2018-09-25:
Revert "check: Move VMXNET3 test to common"
Revert "check: Move endianess test to common"
Revert "check: Move wdt_ib700 test to common"
tests/migration: Speed up the test on ppc64
hw/qdev-core: Fix description of instance_init
qdev: fix a typo in comment
docs: Fix some typos (most found by codespell)
trivial: Make bios files and source files non-executable
memfd: fix possible usage of the uninitialized file descriptor
hw/core/machine: Officially deprecate the enforce-config-section parameter
net/slirp: Deprecate the [hub_id name] parameter tuple
net: Deprecate the "name" parameter of -net
Makefile: Add missing dependency for qemu-deprecated.texi

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

show more ...

Merge remote-tracking branch 'remotes/xanclic/tags/pull-block-2018-09-25' into staging

Block layer patches:
- Drain fixes
- node-name parameters for block-commit
- Refactor block

Merge remote-tracking branch 'remotes/xanclic/tags/pull-block-2018-09-25' into staging

Block layer patches:
- Drain fixes
- node-name parameters for block-commit
- Refactor block jobs to use transactional callbacks for exiting

# gpg: Signature made Tue 25 Sep 2018 16:12:44 BST
# 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

* remotes/xanclic/tags/pull-block-2018-09-25: (42 commits)
test-bdrv-drain: Test draining job source child and parent
block: Use a single global AioWait
test-bdrv-drain: Fix outdated comments
test-bdrv-drain: AIO_WAIT_WHILE() in job .commit/.abort
job: Avoid deadlocks in job_completed_txn_abort()
test-bdrv-drain: Test nested poll in bdrv_drain_poll_top_level()
block: Remove aio_poll() in bdrv_drain_poll variants
blockjob: Lie better in child_job_drained_poll()
block-backend: Decrease in_flight only after callback
block-backend: Fix potential double blk_delete()
block-backend: Add .drained_poll callback
block: Add missing locking in bdrv_co_drain_bh_cb()
test-bdrv-drain: Test AIO_WAIT_WHILE() in completion callback
job: Use AIO_WAIT_WHILE() in job_finish_sync()
test-blockjob: Acquire AioContext around job_cancel_sync()
test-bdrv-drain: Drain with block jobs in an I/O thread
aio-wait: Increase num_waiters even in home thread
blockjob: Wake up BDS when job becomes idle
job: Fix missing locking due to mismerge
job: Fix nested aio_poll() hanging in job_txn_apply
...

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

show more ...

block: Use a single global AioWait

When draining a block node, we recurse to its parent and for subtree
drains also to its children. A single AIO_WAIT_WHILE() is then used to
wait fo

block: Use a single global AioWait

When draining a block node, we recurse to its parent and for subtree
drains also to its children. A single AIO_WAIT_WHILE() is then used to
wait for bdrv_drain_poll() to become true, which depends on all of the
nodes we recursed to. However, if the respective child or parent becomes
quiescent and calls bdrv_wakeup(), only the AioWait of the child/parent
is checked, while AIO_WAIT_WHILE() depends on the AioWait of the
original node.

Fix this by using a single AioWait for all callers of AIO_WAIT_WHILE().

This may mean that the draining thread gets a few more unnecessary
wakeups because an unrelated operation got completed, but we already
wake it up when something _could_ have changed rather than only if it
has certainly changed.

Apart from that, drain is a slow path anyway. In theory it would be
possible to use wakeups more selectively and still correctly, but the
gains are likely not worth the additional complexity. In fact, this
patch is a nice simplification for some places in the code.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Record-replay lockstep execution, log dumper and fixes (Alex, Pavel)
* SCSI fix to pass maximum transfer s

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Record-replay lockstep execution, log dumper and fixes (Alex, Pavel)
* SCSI fix to pass maximum transfer size (Daniel Barboza)
* chardev fixes and improved iothread support (Daniel Berrangé, Peter)
* checkpatch tweak (Eric)
* make help tweak (Marc-André)
* make more PCI NICs available with -net or -nic (myself)
* change default q35 NIC to e1000e (myself)
* SCSI support for NDOB bit (myself)
* membarrier system call support (myself)
* SuperIO refactoring (Philippe)
* miscellaneous cleanups and fixes (Thomas)

# gpg: Signature made Mon 12 Mar 2018 16:10:52 GMT
# gpg: using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (69 commits)
tcg: fix cpu_io_recompile
replay: update documentation
replay: save vmstate of the asynchronous events
replay: don't process async events when warping the clock
scripts/replay-dump.py: replay log dumper
replay: avoid recursive call of checkpoints
replay: check return values of fwrite
replay: push replay_mutex_lock up the call tree
replay: don't destroy mutex at exit
replay: make locking visible outside replay code
replay/replay-internal.c: track holding of replay_lock
replay/replay.c: bump REPLAY_VERSION again
replay: save prior value of the host clock
replay: added replay log format description
replay: fix save/load vm for non-empty queue
replay: fixed replay_enable_events
replay: fix processing async events
cpu-exec: fix exception_index handling
hw/i386/pc: Factor out the superio code
hw/alpha/dp264: Use the TYPE_SMC37C669_SUPERIO
...

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

# Conflicts:
# default-configs/i386-softmmu.mak
# default-configs/x86_64-softmmu.mak

show more ...

Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20180313.0' into staging

VFIO updates 2018-03-13

- Display support for vGPUs (Gerd Hoffmann)

- Enable new

Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20180313.0' into staging

VFIO updates 2018-03-13

- Display support for vGPUs (Gerd Hoffmann)

- Enable new kernel support for mmaps overlapping MSI-X vector table,
disable MSI-X emulation on POWER (Alexey Kardashevskiy)

# gpg: Signature made Tue 13 Mar 2018 19:48:49 GMT
# gpg: using RSA key 239B9B6E3BB08B22
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>"
# gpg: aka "Alex Williamson <alex@shazbot.org>"
# gpg: aka "Alex Williamson <alwillia@redhat.com>"
# gpg: aka "Alex Williamson <alex.l.williamson@gmail.com>"
# Primary key fingerprint: 42F6 C04E 540B D1A9 9E7B 8A90 239B 9B6E 3BB0 8B22

* remotes/awilliam/tags/vfio-update-20180313.0:
ppc/spapr, vfio: Turn off MSIX emulation for VFIO devices
vfio-pci: Allow mmap of MSIX BAR
vfio/pci: Relax DMA map errors for MMIO regions
vfio/display: adding dmabuf support
vfio/display: adding region support
vfio/display: core & wireup
vfio/common: cleanup in vfio_region_finalize
secondary-vga: properly close QemuConsole on unplug
console: minimal hotplug suport
ui/pixman: add qemu_drm_format_to_pixman()
standard-headers: add drm/drm_fourcc.h

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

show more ...

Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-2.12-pull-request' into staging

# gpg: Signature made Tue 13 Mar 2018 17:33:03 GMT
# gpg: using RSA key F

Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-2.12-pull-request' into staging

# gpg: Signature made Tue 13 Mar 2018 17:33:03 GMT
# gpg: using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg: aka "Laurent Vivier <laurent@vivier.eu>"
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-2.12-pull-request:
linux-user: init_guest_space: Add a comment about search strategy
linux-user: init_guest_space: Don't try to align if we'll reject it
linux-user: init_guest_space: Clean up control flow a bit
linux-user: init_guest_commpage: Add a comment about size check
linux-user: init_guest_space: Clarify page alignment logic
linux-user: init_guest_space: Correctly handle guest_start in commpage initialization
linux-user: init_guest_space: Clean up if we can't initialize the commpage
linux-user: Rename validate_guest_space => init_guest_commpage
linux-user: Use #if to only call validate_guest_space for 32-bit ARM target
qemu-binfmt-conf.sh: add qemu-xtensa
linux-user: drop unused target_msync function
linux-user: fix target_mprotect/target_munmap error return values
linux-user: fix assertion in shmdt
linux-user: fix mmap/munmap/mprotect/mremap/shmat
linux-user: Support f_flags in statfs when available.
linux-user: allows to use "--systemd ALL" with qemu-binfmt-conf.sh
linux-user: Remove the unused "not implemented" signal handling stubs
linux-user: Drop unicore32 code

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

show more ...

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream-sev' into staging

* Migrate MSR_SMI_COUNT (Liran)
* Update kernel headers (Gerd, myself)
* SEV support (Brijesh)

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream-sev' into staging

* Migrate MSR_SMI_COUNT (Liran)
* Update kernel headers (Gerd, myself)
* SEV support (Brijesh)

I have not tested non-x86 compilation, but I reordered the SEV patches
so that all non-x86-specific changes go first to catch any possible
issues (which weren't there anyway :)).

# gpg: Signature made Tue 13 Mar 2018 16:37:06 GMT
# gpg: using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream-sev: (22 commits)
sev/i386: add sev_get_capabilities()
sev/i386: qmp: add query-sev-capabilities command
sev/i386: qmp: add query-sev-launch-measure command
sev/i386: hmp: add 'info sev' command
cpu/i386: populate CPUID 0x8000_001F when SEV is active
sev/i386: add migration blocker
sev/i386: finalize the SEV guest launch flow
sev/i386: add support to LAUNCH_MEASURE command
target/i386: encrypt bios rom
sev/i386: add command to encrypt guest memory region
sev/i386: add command to create launch memory encryption context
sev/i386: register the guest memory range which may contain encrypted data
sev/i386: add command to initialize the memory encryption context
include: add psp-sev.h header file
sev/i386: qmp: add query-sev command
target/i386: add Secure Encrypted Virtualization (SEV) object
kvm: introduce memory encryption APIs
kvm: add memory encryption context
docs: add AMD Secure Encrypted Virtualization (SEV)
machine: add memory-encryption option
...

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

show more ...

Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' into staging

Python queue, 2018-03-12

# gpg: Signature made Mon 12 Mar 2018 22:10:36 GMT
# gpg:

Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' into staging

Python queue, 2018-03-12

# gpg: Signature made Mon 12 Mar 2018 22:10:36 GMT
# gpg: using RSA key 2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/python-next-pull-request:
device-crash-test: Use 'python' binary
qmp.py: Encode json data before sending
qemu.py: Use items() instead of iteritems()
device-crash-test: New known crashes

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

show more ...

Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging

x86 queue, 2018-03-12

* Intel Processor Trace support
* KVM_HINTS_DEDICATED

# gp

Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging

x86 queue, 2018-03-12

* Intel Processor Trace support
* KVM_HINTS_DEDICATED

# gpg: Signature made Mon 12 Mar 2018 19:58:39 GMT
# gpg: using RSA key 2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/x86-next-pull-request:
i386: Add support to get/set/migrate Intel Processor Trace feature
i386: Add Intel Processor Trace feature support
target-i386: add KVM_HINTS_DEDICATED performance hint

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

show more ...

Merge remote-tracking branch 'remotes/famz/tags/staging-pull-request' into staging

docker patches

# gpg: Signature made Mon 12 Mar 2018 17:25:57 GMT
# gpg: using

Merge remote-tracking branch 'remotes/famz/tags/staging-pull-request' into staging

docker patches

# gpg: Signature made Mon 12 Mar 2018 17:25:57 GMT
# gpg: using RSA key CA35624C6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.com>"
# Primary key fingerprint: 5003 7CB7 9706 0F76 F021 AD56 CA35 624C 6A91 71C6

* remotes/famz/tags/staging-pull-request:
tests: make docker-test-debug@fedora run sanitizers

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

show more ...

Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

# gpg: Signature made Mon 12 Mar 2018 16:01:16 GMT
# gpg: using RSA key 9CA4ABB381AB73

Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

# gpg: Signature made Mon 12 Mar 2018 16:01:16 GMT
# gpg: using RSA key 9CA4ABB381AB73C8
# 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:
block: make BDRV_POLL_WHILE() re-entrancy safe

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

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Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20180309a' into staging

Migration pull 2018-03-09

# gpg: Signature made Fri 09 Mar 2018 17:52:46 GMT
# gpg:

Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20180309a' into staging

Migration pull 2018-03-09

# gpg: Signature made Fri 09 Mar 2018 17:52:46 GMT
# gpg: using RSA key 0516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>"
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7

* remotes/dgilbert/tags/pull-migration-20180309a:
tests: Silence migration-test 'bad' test
migration: fix applying wrong capabilities
migration/block: rename MAX_INFLIGHT_IO to MAX_IO_BUFFERS
migration/block: reset dirty bitmap before read in bulk phase
migration: do not transfer ram during bulk storage migration
migration: fix minor finalize leak

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

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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20180309' into staging

target-arm queue:
* i.MX: Add i.MX7 SOC implementation and i.MX7 Sabre board
* Report the

Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20180309' into staging

target-arm queue:
* i.MX: Add i.MX7 SOC implementation and i.MX7 Sabre board
* Report the correct core count in A53 L2CTLR on the ZynqMP board
* linux-user: preliminary SVE support work (signal handling)
* hw/arm/boot: fix memory leak in case of error loading ELF file
* hw/arm/boot: avoid reading off end of buffer if passed very
small image file
* hw/arm: Use more CONFIG switches for the object files
* target/arm: Add "-cpu max" support
* hw/arm/virt: Support -machine gic-version=max
* hw/sd: improve debug tracing
* hw/sd: sdcard: Add the Tuning Command (CMD 19)
* MAINTAINERS: add Philippe as odd-fixes maintainer for SD

# gpg: Signature made Fri 09 Mar 2018 17:24:23 GMT
# gpg: using RSA key 3C2525ED14360CDE
# 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-20180309: (25 commits)
MAINTAINERS: Add entries for SD (SDHCI, SDBus, SDCard)
sdhci: Fix a typo in comment
sdcard: Add the Tuning Command (CMD19)
sdcard: Display which protocol is used when tracing (SD or SPI)
sdcard: Display command name when tracing CMD/ACMD
sdcard: Do not trace CMD55, except when we already expect an ACMD
hw/arm/virt: Support -machine gic-version=max
hw/arm/virt: Add "max" to the list of CPU types "virt" supports
target/arm: Make 'any' CPU just an alias for 'max'
target/arm: Add "-cpu max" support
target/arm: Move definition of 'host' cpu type into cpu.c
target/arm: Query host CPU features on-demand at instance init
arm: avoid heap-buffer-overflow in load_aarch64_image
arm: fix load ELF error leak
hw/arm: Use more CONFIG switches for the object files
aarch64-linux-user: Add support for SVE signal frame records
aarch64-linux-user: Add support for EXTRA signal frame records
aarch64-linux-user: Remove struct target_aux_context
aarch64-linux-user: Split out helpers for guest signal handling
linux-user: Implement aarch64 PR_SVE_SET/GET_VL
...

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

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block: make BDRV_POLL_WHILE() re-entrancy safe

Nested BDRV_POLL_WHILE() calls can occur. Currently
assert(!wait_->wakeup) fails in AIO_WAIT_WHILE() when this happens.

This patc

block: make BDRV_POLL_WHILE() re-entrancy safe

Nested BDRV_POLL_WHILE() calls can occur. Currently
assert(!wait_->wakeup) fails in AIO_WAIT_WHILE() when this happens.

This patch converts the bool wait_->need_kick flag to an unsigned
wait_->num_waiters counter.

Nesting works correctly because outer AIO_WAIT_WHILE() callers evaluate
the condition again after the inner caller completes (invoking the inner
caller counts as aio_poll() progress).

Reported-by: "fuweiwei (C)" <fuweiwei2@huawei.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20180307124619.6218-1-stefanha@redhat.com
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Fri 09 Mar 2018 15:09:20 GMT
# gpg: using RS

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Fri 09 Mar 2018 15:09:20 GMT
# gpg: using RSA key 7F09B272C88F2FD6
# 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: (56 commits)
qemu-iotests: fix 203 migration completion race
iotests: Tweak 030 in order to trigger a race condition with parallel jobs
iotests: Skip test for ENOMEM error
iotests: Mark all tests executable
iotests: Test creating overlay when guest running
qemu-iotests: Test ssh image creation over QMP
qemu-iotests: Test qcow2 over file image creation with QMP
block: Fail bdrv_truncate() with negative size
file-posix: Fix no-op bdrv_truncate() with falloc preallocation
ssh: Support .bdrv_co_create
ssh: Pass BlockdevOptionsSsh to connect_to_ssh()
ssh: QAPIfy host-key-check option
ssh: Use QAPI BlockdevOptionsSsh object
sheepdog: Support .bdrv_co_create
sheepdog: QAPIfy "redundancy" create option
nfs: Support .bdrv_co_create
nfs: Use QAPI options in nfs_client_open()
rbd: Use qemu_rbd_connect() in qemu_rbd_do_create()
rbd: Assign s->snap/image_name in qemu_rbd_open()
rbd: Support .bdrv_co_create
...

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

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Merge remote-tracking branch 'remotes/vivier/tags/m68k-for-2.12-pull-request' into staging

# gpg: Signature made Fri 09 Mar 2018 14:54:33 GMT
# gpg: using RSA key F30C38BD

Merge remote-tracking branch 'remotes/vivier/tags/m68k-for-2.12-pull-request' into staging

# gpg: Signature made Fri 09 Mar 2018 14:54:33 GMT
# gpg: using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg: aka "Laurent Vivier <laurent@vivier.eu>"
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C

* remotes/vivier/tags/m68k-for-2.12-pull-request:
target/m68k: implement ftentox
target/m68k: implement ftwotox
target/m68k: implement fetox
target/m68k: implement flog2
target/m68k: implement flog10
target/m68k: implement flogn
target/m68k: implement flognp1
target/m68k: define floatx80_move()

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

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Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

# gpg: Signature made Fri 09 Mar 2018 13:19:02 GMT
# gpg: using RSA key 9CA4ABB381AB73

Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

# gpg: Signature made Fri 09 Mar 2018 13:19:02 GMT
# gpg: using RSA key 9CA4ABB381AB73C8
# 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:
vl: introduce vm_shutdown()
virtio-scsi: fix race between .ioeventfd_stop() and vq handler
virtio-blk: fix race between .ioeventfd_stop() and vq handler
block: add aio_wait_bh_oneshot()
virtio-blk: dataplane: Don't batch notifications if EVENT_IDX is present
README: Fix typo 'git-publish'
block: Fix qemu crash when using scsi-block

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

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block: add aio_wait_bh_oneshot()

Sometimes it's necessary for the main loop thread to run a BH in an
IOThread and wait for its completion. This primitive is useful during
startup/sh

block: add aio_wait_bh_oneshot()

Sometimes it's necessary for the main loop thread to run a BH in an
IOThread and wait for its completion. This primitive is useful during
startup/shutdown to synchronize and avoid race conditions.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20180307144205.20619-2-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

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