Merge tag 'pull-error-2024-04-24' of https://repo.or.cz/qemu/armbru into staging

Error reporting patches for 2024-04-24

# -----BEGIN PGP SIGNATURE-----
#
# iQJGBAABCAAwFiEENUvIs9frKmtoZ05fOHC0AOuRh

Merge tag 'pull-error-2024-04-24' of https://repo.or.cz/qemu/armbru into staging

Error reporting patches for 2024-04-24

# -----BEGIN PGP SIGNATURE-----
#
# iQJGBAABCAAwFiEENUvIs9frKmtoZ05fOHC0AOuRhlMFAmYouloSHGFybWJydUBy
# ZWRoYXQuY29tAAoJEDhwtADrkYZTzLwP+wQjCWJHpTB+uQ3+U5Tb77BUJxuEjDMj
# txNIJBXHOo7erxTSCieLuQICm8e30z62QAK4nVStyMDcyGh1KfwdSDAxBFnuLpA2
# 7X5bXbvCrm4vXVASRTV1zKCYDlIXFfrMWLvN5KgM90RsodLcy0szlXg+qYyoIM3Z
# 8zp0Ug0fQPFHiOAQJi9ZTOsCYJBhZc2sbzgQEmf/g6q9bJaZHzPEHvVT4AQhTAtn
# 7BIJY+vGDZNZwbP/0obWy2lai3kbGak8OXpwq/bewdrxeRmvqmM7sk+V/P2tXQD+
# kZe0/HWuDoO5J8L3KHiJnBJ0KCk8fbo4I0T6v9vf55Sj8K0r7O9sykgXXWv8q0lO
# GrQa0YcyWAckI41stYQpwEpIlRanuZv/p8OZFJIqsTAfaw7RlbIBYA9xZCUnTton
# FbHO/t2BLfo8eO9/xRD4r1u6vMbVozImPETuUMPyLHzlrdw2thxddKQNInHYYZ2U
# SvvaByceEP2UywOnOflZhVL2dIhhnrBztiW2Vqod1fQHpfBAcJn909PZIlPZyMkr
# gUnABI/rtC/lW3pBee6HmfzJ6Fah0e0XCpCY20qFe27Bi/z3xKi5NWYuyAUG5csp
# CuTsc4pXfPVj5Z+Mk4pyY8PK5k4jSa7vAVLCLTNzXJLZlJTb6yuf0HsJ7768nHDc
# hSEIjLwQWYtw
# =r8Rv
# -----END PGP SIGNATURE-----
# gpg: Signature made Wed 24 Apr 2024 12:52:58 AM PDT
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [undefined]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653

* tag 'pull-error-2024-04-24' of https://repo.or.cz/qemu/armbru:
qapi: Inline and remove QERR_PROPERTY_VALUE_BAD definition
qapi: Inline and remove QERR_MIGRATION_ACTIVE definition
qapi: Correct error message for 'vcpu_dirty_limit' parameter
qapi: Inline and remove QERR_INVALID_PARAMETER_TYPE definition
qapi: Inline QERR_INVALID_PARAMETER_TYPE definition (constant value)
qapi: Inline and remove QERR_INVALID_PARAMETER definition
qapi: Inline and remove QERR_DEVICE_NO_HOTPLUG definition
qapi: Inline and remove QERR_DEVICE_HAS_NO_MEDIUM definition
qapi: Inline and remove QERR_BUS_NO_HOTPLUG definition
error: Drop superfluous #include "qapi/qmp/qerror.h"

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

qapi: Inline and remove QERR_DEVICE_HAS_NO_MEDIUM definition

Address the comment added in commit 4629ed1e98
("qerror: Finally unused, clean up"), from 2015:

/*
* These macros will go away, ple

qapi: Inline and remove QERR_DEVICE_HAS_NO_MEDIUM definition

Address the comment added in commit 4629ed1e98
("qerror: Finally unused, clean up"), from 2015:

/*
* These macros will go away, please don't use
* in new code, and do not add new ones!
*/

Mechanical transformation using sed, and manual cleanup.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240312141343.3168265-4-armbru@redhat.com>

show more ...

Merge tag 'pull-request-2024-03-12' of https://gitlab.com/thuth/qemu into staging

* Add missing ERRP_GUARD() statements in functions that need it
* Prefer fast cpu_env() over slower CPU QOM cast mac

Merge tag 'pull-request-2024-03-12' of https://gitlab.com/thuth/qemu into staging

* Add missing ERRP_GUARD() statements in functions that need it
* Prefer fast cpu_env() over slower CPU QOM cast macro

# -----BEGIN PGP SIGNATURE-----
#
# iQJFBAABCAAvFiEEJ7iIR+7gJQEY8+q5LtnXdP5wLbUFAmXwPhYRHHRodXRoQHJl
# ZGhhdC5jb20ACgkQLtnXdP5wLbWHvBAAgKx5LHFjz3xREVA+LkDTQ49mz0lK3s32
# SGvNlIHjiaDGVttVYhVC4sinBWUruG4Lyv/2QN72OJBzn6WUsEUQE3KPH1d7Y3/s
# wS9X7mj70n4kugWJqeIJP5AXSRasHmWoQ4QJLVQRJd6+Eb9jqwep0x7bYkI1de6D
# bL1Q7bIfkFeNQBXaiPWAm2i+hqmT4C1r8HEAGZIjAsMFrjy/hzBEjNV+pnh6ZSq9
# Vp8BsPWRfLU2XHm4WX0o8d89WUMAfUGbVkddEl/XjIHDrUD+Zbd1HAhLyfhsmrnE
# jXIwSzm+ML1KX4MoF5ilGtg8Oo0gQDEBy9/xck6G0HCm9lIoLKlgTxK9glr2vdT8
# yxZmrM9Hder7F9hKKxmb127xgU6AmL7rYmVqsoQMNAq22D6Xr4UDpgFRXNk2/wO6
# zZZBkfZ4H4MpZXbd/KJpXvYH5mQA4IpkOy8LJdE+dbcHX7Szy9ksZdPA+Z10hqqf
# zqS13qTs3abxymy2Q/tO3hPKSJCk1+vCGUkN60Wm+9VoLWGoU43qMc7gnY/pCS7m
# 0rFKtvfwFHhokX1orK0lP/ppVzPv/5oFIeK8YDY9if+N+dU2LCwVZHIuf2/VJPRq
# wmgH2vAn3JDoRKPxTGX9ly6AMxuZaeP92qBTOPap0gDhihYzIpaCq9ecEBoTakI7
# tdFhV0iRr08=
# =NiP4
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 12 Mar 2024 11:35:50 GMT
# gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg: issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg: aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2024-03-12' of https://gitlab.com/thuth/qemu: (55 commits)
user: Prefer fast cpu_env() over slower CPU QOM cast macro
target/xtensa: Prefer fast cpu_env() over slower CPU QOM cast macro
target/tricore: Prefer fast cpu_env() over slower CPU QOM cast macro
target/sparc: Prefer fast cpu_env() over slower CPU QOM cast macro
target/sh4: Prefer fast cpu_env() over slower CPU QOM cast macro
target/rx: Prefer fast cpu_env() over slower CPU QOM cast macro
target/ppc: Prefer fast cpu_env() over slower CPU QOM cast macro
target/openrisc: Prefer fast cpu_env() over slower CPU QOM cast macro
target/nios2: Prefer fast cpu_env() over slower CPU QOM cast macro
target/mips: Prefer fast cpu_env() over slower CPU QOM cast macro
target/microblaze: Prefer fast cpu_env() over slower CPU QOM cast macro
target/m68k: Prefer fast cpu_env() over slower CPU QOM cast macro
target/loongarch: Prefer fast cpu_env() over slower CPU QOM cast macro
target/i386/hvf: Use CPUState typedef
target/hexagon: Prefer fast cpu_env() over slower CPU QOM cast macro
target/cris: Prefer fast cpu_env() over slower CPU QOM cast macro
target/avr: Prefer fast cpu_env() over slower CPU QOM cast macro
target/alpha: Prefer fast cpu_env() over slower CPU QOM cast macro
target: Replace CPU_GET_CLASS(cpu -> obj) in cpu_reset_hold() handler
bulk: Call in place single use cpu_env()
...

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

show more ...

block/snapshot: Fix missing ERRP_GUARD() for error_prepend()

As the comment in qapi/error, passing @errp to error_prepend() requires
ERRP_GUARD():

* = Why, when and how to use ERRP_GUARD() =
*
* Wi

block/snapshot: Fix missing ERRP_GUARD() for error_prepend()

As the comment in qapi/error, passing @errp to error_prepend() requires
ERRP_GUARD():

* = Why, when and how to use ERRP_GUARD() =
*
* Without ERRP_GUARD(), use of the @errp parameter is restricted:
...
* - It should not be passed to error_prepend(), error_vprepend() or
* error_append_hint(), because that doesn't work with &error_fatal.
* ERRP_GUARD() lifts these restrictions.
*
* To use ERRP_GUARD(), add it right at the beginning of the function.
* @errp can then be used without worrying about the argument being
* NULL or &error_fatal.

ERRP_GUARD() could avoid the case when @errp is &error_fatal, the user
can't see this additional information, because exit() happens in
error_setg earlier than information is added [1].

In block/snapshot.c, there are 2 functions passing @errp to
error_prepend() without ERRP_GUARD():
- bdrv_all_delete_snapshot()
- bdrv_all_goto_snapshot()

As the APIs exposed in include/block/snapshot.h, they could be called
by other modules.

To avoid potential issues as [1] said, add missing ERRP_GUARD() at the
beginning of these 2 functions.

[1]: Issue description in the commit message of commit ae7c80a7bd73
("error: New macro ERRP_GUARD()").

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Hanna Reitz <hreitz@redhat.com>
Cc: qemu-block@nongnu.org
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Message-ID: <20240311033822.3142585-11-zhao1.liu@linux.intel.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

show more ...

block: Fix crash when loading snapshot on inactive node

bdrv_is_read_only() only checks if the node is configured to be
read-only eventually, but even if it returns false, writing to the node
may no

block: Fix crash when loading snapshot on inactive node

bdrv_is_read_only() only checks if the node is configured to be
read-only eventually, but even if it returns false, writing to the node
may not be permitted at the moment (because it's inactive).

bdrv_is_writable() checks that the node can be written to right now, and
this is what the snapshot operations really need.

Change bdrv_can_snapshot() to use bdrv_is_writable() to fix crashes like
the following:

$ ./qemu-system-x86_64 -hda /tmp/test.qcow2 -loadvm foo -incoming defer
qemu-system-x86_64: ../block/io.c:1990: int bdrv_co_write_req_prepare(BdrvChild *, int64_t, int64_t, BdrvTrackedRequest *, int): Assertion `!(bs->open_flags & BDRV_O_INACTIVE)' failed.

The resulting error message after this patch isn't perfect yet, but at
least it doesn't crash any more:

$ ./qemu-system-x86_64 -hda /tmp/test.qcow2 -loadvm foo -incoming defer
qemu-system-x86_64: Device 'ide0-hd0' is writable but does not support snapshots

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231201142520.32255-2-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit d3007d348adaaf04ee8b099a475282034a662414)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

show more ...

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- virtio-blk: Multiqueue support (configurable iothread per queue)
- Made NBD export and hw/scsi thread-sa

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- virtio-blk: Multiqueue support (configurable iothread per queue)
- Made NBD export and hw/scsi thread-safe without AioContext lock
- Fix crash when loading snapshot on inactive node

# -----BEGIN PGP SIGNATURE-----
#
# iQJFBAABCAAvFiEE3D3rFZqa+V09dFb+fwmycsiPL9YFAmWEw/8RHGt3b2xmQHJl
# ZGhhdC5jb20ACgkQfwmycsiPL9bX0Q/9G+Qx8mQGmbxJzvtW7/1eaeJ5CPCYT8w3
# 033S5hCil43mvX2aQKTFrh1Nz4aYlqMDyURvNu7nigyADY+kBpzzJ1MFr6WQrzYv
# QEk4jf/FOllfKn8+/A0z2NJDhtpVgqKKHBsFZl8FBUcxd79daTaoPPM3BNNsOHQD
# o7Z7hR/iEdG9dkAh/fpwctsgMO/CoN0BRRyN2OByj03zeu1TlDJ6lX0hxlcJl9Jw
# vLo81rWTCqKRu+SbjBsb0HfYE2hP54A4hvxn4I9vYGYDz8ElucluYyeqUEK+mdrX
# /DQBdb+Osl1FD6MuIaFR+Rgp9Mu5h6ZOdvUyCY0zuByti851hV8qjW9BtrTfqaMh
# LMOKoL6c5B8XJYWVGAGrJexIw1hHq5WKdXN9zp4FZA4tOyHUMRjHuR1+zScU6gnU
# WRSIQR46w75A13clWyJs9Hf/q5Fp/1KT4nfuZ/hmiXvxdsYY5x1w/W3s9tRNjYKL
# d6FVk17cFc6Ksb7lWvDCgg61BNZtGm4Clmw0kJ6V1reiQz7AvDLmduLUQbmrVt7G
# gWAY4b2L9YXJpEx5en0kE50KLAUw/E9ozbOq6ZT9nFUKeNAPC8PS5lK7vYVwebCk
# VA0t8pFzKhdB1bJaG5fMSRPBuqkvhsaDEEDABlSro8dyyjoQBaEdk5P9Kxe66hBc
# xhTmDPdv/JM=
# =E3Zh
# -----END PGP SIGNATURE-----
# gpg: Signature made Thu 21 Dec 2023 18:02:23 EST
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (33 commits)
virtio-blk: add iothread-vq-mapping parameter
qdev: add IOThreadVirtQueueMappingList property type
qdev-properties: alias all object class properties
string-output-visitor: show structs as "<omitted>"
block-coroutine-wrapper: use qemu_get_current_aio_context()
block: remove outdated AioContext locking comments
job: remove outdated AioContext locking comments
scsi: remove outdated AioContext lock comment
docs: remove AioContext lock from IOThread docs
aio: remove aio_context_acquire()/aio_context_release() API
aio-wait: draw equivalence between AIO_WAIT_WHILE() and AIO_WAIT_WHILE_UNLOCKED()
scsi: remove AioContext locking
block: remove bdrv_co_lock()
block: remove AioContext locking
graph-lock: remove AioContext locking
aio: make aio_context_acquire()/aio_context_release() a no-op
tests: remove aio_context_acquire() tests
scsi: assert that callbacks run in the correct AioContext
virtio-scsi: replace AioContext lock with tmf_bh_lock
dma-helpers: don't lock AioContext in dma_blk_cb()
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

block: remove AioContext locking

This is the big patch that removes
aio_context_acquire()/aio_context_release() from the block layer and
affected block layer users.

There isn't a clean way to split

block: remove AioContext locking

This is the big patch that removes
aio_context_acquire()/aio_context_release() from the block layer and
affected block layer users.

There isn't a clean way to split this patch and the reviewers are likely
the same group of people, so I decided to do it in one patch.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Message-ID: <20231205182011.1976568-7-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

graph-lock: remove AioContext locking

Stop acquiring/releasing the AioContext lock in
bdrv_graph_wrlock()/bdrv_graph_unlock() since the lock no longer has any
effect.

The distinction between bdrv_g

graph-lock: remove AioContext locking

Stop acquiring/releasing the AioContext lock in
bdrv_graph_wrlock()/bdrv_graph_unlock() since the lock no longer has any
effect.

The distinction between bdrv_graph_wrunlock() and
bdrv_graph_wrunlock_ctx() becomes meaningless and they can be collapsed
into one function.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231205182011.1976568-6-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block: Fix crash when loading snapshot on inactive node

bdrv_is_read_only() only checks if the node is configured to be
read-only eventually, but even if it returns false, writing to the node
may no

block: Fix crash when loading snapshot on inactive node

bdrv_is_read_only() only checks if the node is configured to be
read-only eventually, but even if it returns false, writing to the node
may not be permitted at the moment (because it's inactive).

bdrv_is_writable() checks that the node can be written to right now, and
this is what the snapshot operations really need.

Change bdrv_can_snapshot() to use bdrv_is_writable() to fix crashes like
the following:

$ ./qemu-system-x86_64 -hda /tmp/test.qcow2 -loadvm foo -incoming defer
qemu-system-x86_64: ../block/io.c:1990: int bdrv_co_write_req_prepare(BdrvChild *, int64_t, int64_t, BdrvTrackedRequest *, int): Assertion `!(bs->open_flags & BDRV_O_INACTIVE)' failed.

The resulting error message after this patch isn't perfect yet, but at
least it doesn't crash any more:

$ ./qemu-system-x86_64 -hda /tmp/test.qcow2 -loadvm foo -incoming defer
qemu-system-x86_64: Device 'ide0-hd0' is writable but does not support snapshots

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231201142520.32255-2-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Fix graph lock related deadlocks with the stream job
- ahci: Fix legacy software reset
- ide/via: Fix sw

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Fix graph lock related deadlocks with the stream job
- ahci: Fix legacy software reset
- ide/via: Fix switch between compatibility and native mode

# -----BEGIN PGP SIGNATURE-----
#
# iQJFBAABCAAvFiEE3D3rFZqa+V09dFb+fwmycsiPL9YFAmVcmYoRHGt3b2xmQHJl
# ZGhhdC5jb20ACgkQfwmycsiPL9YDzw/7BD6wZpyCsDbFu9Jbt0L894tYQls7otnR
# yeAIaZVqSkDcMK8VBD/xAjV8UgX194oKPi42CDgS73avd0cSHLIM5cNgGkwCrMWS
# ry5uuOP6EWVMPPR/129cpH8uGvkl+qwCQf5gB13/8NvMbeN2mHOTC6WW+VA20vb0
# V0DJXhYszVzXa3L1a/m6f4Jwj54tTeZ56JcBblL3wi/soklb45gsnPJaHeGb3rzK
# yjPkw+kpVXTVbpacobGmzmjlD3Yqk69NexP2kyU1w2lqPnemYPH+9sa+7RxMspkj
# InQvqq6TFtMOrC/65/527p2ENRUOxn7Xwsa1+Hnar2i3BoyGugWE8GPxJDBxAWW4
# INJtpxIpiA7Scd26VBCNVstVe5EuyxkP97T85cgNUMgeE58y3i51i6eHd4GUIR7v
# PNc5TsSbnVV8sQ7RsXka4hRyjndIPRB0CBePydDoBz6zaGmcVU6ep0Oppah9gVu9
# CU0dBz2jV0r1dFhU1eZkCbd1ufdR93R/iD3gBD4vj1xSL3l+9OE/FKdrVE66uElL
# iAsHp3cimkPuWAx/jZaeAC7BDI0XS6s1TimddqJx90f2mZjkq8cmVp+HoVNP0jRQ
# VP6AIQy6is+P4QtDSekgXVJE8K95ngBzsr+ittR8jF4q67QzHVjLmJ9ZBXyrowlz
# gtZTy2WPxbM=
# =8dXj
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 21 Nov 2023 06:50:34 EST
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin:
hw/ide/via: implement legacy/native mode switching
ide/via: don't attempt to set default BAR addresses
ide/pci: introduce pci_ide_update_mode() function
ide/ioport: move ide_portio_list[] and ide_portio_list2[] definitions to IDE core
iotests: Test two stream jobs in a single iothread
stream: Fix AioContext locking during bdrv_graph_wrlock()
block: Fix deadlocks in bdrv_graph_wrunlock()
block: Fix bdrv_graph_wrlock() call in blk_remove_bs()
hw/ide/ahci: fix legacy software reset

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

block: Fix deadlocks in bdrv_graph_wrunlock()

bdrv_graph_wrunlock() calls aio_poll(), which may run callbacks that
have a nested event loop. Nested event loops can depend on other
iothreads making p

block: Fix deadlocks in bdrv_graph_wrunlock()

bdrv_graph_wrunlock() calls aio_poll(), which may run callbacks that
have a nested event loop. Nested event loops can depend on other
iothreads making progress, so in order to allow them to make progress it
must not hold the AioContext lock of another thread while calling
aio_poll().

This introduces a @bs parameter to bdrv_graph_wrunlock() whose
AioContext is temporarily dropped (which matches bdrv_graph_wrlock()),
and a bdrv_graph_wrunlock_ctx() that can be used if the BlockDriverState
doesn't necessarily exist any more when unlocking.

This also requires a change to bdrv_schedule_unref(), which was relying
on the incorrectly taken lock. It needs to take the lock itself now.
While this is a separate bug, it can't be fixed a separate patch because
otherwise the intermediate state would either deadlock or try to release
a lock that we don't even hold.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231115172012.112727-3-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
[kwolf: Fixed up bdrv_schedule_unref()]
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge tag 'pull-shadow-2023-11-13' of https://repo.or.cz/qemu/armbru into staging

-Wshadow=local patches for 2023-11-13

# -----BEGIN PGP SIGNATURE-----
#
# iQJGBAABCAAwFiEENUvIs9frKmtoZ05fOHC0AOuRh

Merge tag 'pull-shadow-2023-11-13' of https://repo.or.cz/qemu/armbru into staging

-Wshadow=local patches for 2023-11-13

# -----BEGIN PGP SIGNATURE-----
#
# iQJGBAABCAAwFiEENUvIs9frKmtoZ05fOHC0AOuRhlMFAmVR7ZISHGFybWJydUBy
# ZWRoYXQuY29tAAoJEDhwtADrkYZT7YkP/RUaHzka7vJhcAJSFgCviZ7NYZFbDYkT
# MT9Hi4XYYkOqS0BQ9xZPZDy47oB4pqZlNfMCUD3vmD8LLdVsUyRIbZxu59SdgTOa
# dnNvXIsC16y7Hk6VRfWB4bifOa1rmbF2el5WevA1UpXMRnjkMbtahbXXlSudQpeQ
# Y0e5mILKcbLD1Q6RuTounkfZ/C5pJZKycxVrN8YvFBQ2pILR/JtVwCU9rQ525Sgx
# tgScQ+Z+S4Pw+hyD8kpnw+xqk/iXprgX7GmOhCiy4yLdndq1nZgXOXnZvuIvG3n2
# cvM+dNTVH32qlLMqNdwAaOjAVStobdt85oiyMTnkBfi1+6B+5I6FzyH31/XhV86t
# siCqZ1vsL8N8cuA9mhbKS2eaLrf4ubAyh07SycaKNWfxVMgIAN0rpqaUzKghGcT3
# y9TfFI48zKgCS8AmMuUYy9G6xPlQy726ZHi4yb+t+j2dDx80eAQyXZRPQBiEomND
# cIotxEAPdAdl+52lCwMpYPt+rnxGg4EW05de/CrjKag9Fizfz4cOuwCsSp32XuNe
# TmE1Gi3pKaX/goLO2oTesZ6h8rbMoGZ3XG7YWoIkDpjb+XKuUXXxg+b1cv/0dntk
# Qn6izIFdSscYXakxAkq6ci/3xS0ork3FXjDHihOKj9IWR8YrhqaDZ//XHnIL1Ld7
# QcXs7wElHeJM
# =66br
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 13 Nov 2023 04:34:10 EST
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653

* tag 'pull-shadow-2023-11-13' of https://repo.or.cz/qemu/armbru:
meson: Enable -Wshadow=local
block/snapshot: Fix compiler warning with -Wshadow=local

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

block/snapshot: Fix compiler warning with -Wshadow=local

No need to declare a new variable in the the inner code block
here, we can re-use the "ret" variable that has been declared
at the beginning

block/snapshot: Fix compiler warning with -Wshadow=local

No need to declare a new variable in the the inner code block
here, we can re-use the "ret" variable that has been declared
at the beginning of the function. With this change, the code
can now be successfully compiled with -Wshadow=local again.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231023175038.111607-1-thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

show more ...

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Clean up coroutine versions of bdrv_{is_allocated,block_status}*
- Graph locking part 5 (protect childre

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Clean up coroutine versions of bdrv_{is_allocated,block_status}*
- Graph locking part 5 (protect children/parent links)

# -----BEGIN PGP SIGNATURE-----
#
# iQJFBAABCAAvFiEE3D3rFZqa+V09dFb+fwmycsiPL9YFAmUoHL8RHGt3b2xmQHJl
# ZGhhdC5jb20ACgkQfwmycsiPL9b4uRAAjryVAaA5jXZ3mdGB80nhGtARZlIaIVO/
# tlXk065q2Cj+98f+fBPCPWvmEz28vJwBhJUsFwpHzLZrxecBpwZp0MPAkFBNkouq
# +AiO9xyTAqccEp/dnIys4Bun9Rp0Jq9lk9y29zzEmQuK5uCB56lpx2cDn/JkzSQt
# ZFtnxxTwi3MDTNvXATub8Ia/1suui0zvESS7J/NBxQNI3cFaQszp1vMwlRIoPiWo
# 15YZFPZZQ2pvu6/1nL1Vl9OLbPAVcEGJpjHZv0XhudYOwRiDvjYnwfPL7BuwYEsU
# Dos4mZZd/KMU695s7OzlVYi1q4ATKUTUxyyylVhXZrFBXSE5ntnfoHTKHEruTyPb
# G31h5mribSTWjdvY5HewHbSSPjByAWsSQg9yzcHybhORiqGQCpcGQ8zuW7oNKMPV
# JicWdoRVY4U4hR0nRdDxz9zdpQ8QYok/ginBxFaOzrCfClUB7ZOBxwRMclIghuRH
# FV+ZJk0ylVOz2tbfNxUa3KhUgTPd8jgCHFI7xak5EBRtTJiJjE03Xag1Fdxy5/D5
# tRsBBW4sOFygAhjN/xyeaRv9L8rAv3x/akriFjPUbOMLkPcJpe/DTWsP8+5LaZF8
# GkQvjsg5UvmfcJ3LFtecXxfYH4UWhDmyAjF+BswiRqafDDi2CCUmdwDnzEPbwuWO
# x1y7cgxe9SE=
# =4d/s
# -----END PGP SIGNATURE-----
# gpg: Signature made Thu 12 Oct 2023 12:20:15 EDT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (26 commits)
block: Add assertion for bdrv_graph_wrlock()
block: Protect bs->children with graph_lock
block: Protect bs->parents with graph_lock
block: Mark bdrv_get_specific_info() and callers GRAPH_RDLOCK
block: Mark bdrv_apply_auto_read_only() and callers GRAPH_RDLOCK
block: Mark bdrv_op_is_blocked() and callers GRAPH_RDLOCK
qcow2: Mark check_constraints_on_bitmap() GRAPH_RDLOCK
qcow2: Mark qcow2_inactivate() and callers GRAPH_RDLOCK
qcow2: Mark qcow2_signal_corruption() and callers GRAPH_RDLOCK
block: Mark bdrv_amend_options() and callers GRAPH_RDLOCK
block: Mark bdrv_get_parent_name() and callers GRAPH_RDLOCK
block: Mark bdrv_primary_child() and callers GRAPH_RDLOCK
block: Mark bdrv_refresh_filename() and callers GRAPH_RDLOCK
block: Mark bdrv_get_xdbg_block_graph() and callers GRAPH_RDLOCK
block: Take graph rdlock in parts of reopen
block: Mark bdrv_snapshot_fallback() and callers GRAPH_RDLOCK
block: Mark bdrv_parent_cb_resize() and callers GRAPH_RDLOCK
block: Mark drain related functions GRAPH_RDLOCK
block: Mark bdrv_first_blk() and bdrv_is_root_node() GRAPH_RDLOCK
block: Take graph rdlock in bdrv_inactivate_all()
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

block: Mark bdrv_get_parent_name() and callers GRAPH_RDLOCK

This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_get_parent_name() need to hold a reader lock for the graph
because it a

block: Mark bdrv_get_parent_name() and callers GRAPH_RDLOCK

This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_get_parent_name() need to hold a reader lock for the graph
because it accesses the parents list of a node.

For some places, we know that they will hold the lock, but we don't have
the GRAPH_RDLOCK annotations yet. In this case, add assume_graph_lock()
with a FIXME comment. These places will be removed once everything is
properly annotated.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230929145157.45443-13-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block: Mark bdrv_primary_child() and callers GRAPH_RDLOCK

This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_primary_child() need to hold a reader lock for the graph
because it acces

block: Mark bdrv_primary_child() and callers GRAPH_RDLOCK

This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_primary_child() need to hold a reader lock for the graph
because it accesses the children list of a node.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230929145157.45443-12-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block: Mark bdrv_snapshot_fallback() and callers GRAPH_RDLOCK

This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_snapshot_fallback() need to hold a reader lock for the graph
because

block: Mark bdrv_snapshot_fallback() and callers GRAPH_RDLOCK

This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_snapshot_fallback() need to hold a reader lock for the graph
because it accesses the children list of a node.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230929145157.45443-8-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block: Mark bdrv_first_blk() and bdrv_is_root_node() GRAPH_RDLOCK

This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_first_blk() and bdrv_is_root_node() need to hold a reader lock
fo

block: Mark bdrv_first_blk() and bdrv_is_root_node() GRAPH_RDLOCK

This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_first_blk() and bdrv_is_root_node() need to hold a reader lock
for the graph. These functions are the only functions in block-backend.c
that access the parent list of a node.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230929145157.45443-5-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Graph locking part 4 (node management)
- qemu-img map: report compressed data blocks
- block-backend: pr

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Graph locking part 4 (node management)
- qemu-img map: report compressed data blocks
- block-backend: process I/O in the current AioContext

# -----BEGIN PGP SIGNATURE-----
#
# iQJFBAABCAAvFiEE3D3rFZqa+V09dFb+fwmycsiPL9YFAmULHnURHGt3b2xmQHJl
# ZGhhdC5jb20ACgkQfwmycsiPL9aB5hAAqH8To7WIUtg1rj1PY809ck78ghm18PKg
# TNdN7IbrXQghX5foh2VgPwVVl+JaW2CSrJYWQcAO6AbvFduNIi9iKzI6RT0xKXpb
# b8oQXS7zntFzwBv8ohOU5NSVJOgVmNP4h5qJIMmXgB9ZcLFG40zggVH2qQT7guUf
# 9MAc81kI/d5vvSHY0ZjdHjNOgwG4q1j8yytL7OFqWUfB8sXloUCA9lT7w4jIYD8L
# v2StUOLWB01Zts2o8SCNaFxuajs6wUee8b/DM1cyPyLy4KtOdXvLKhq2NlXpLo2i
# aZFr4PtizTVwrQZIJttA9jqM+QCsDOsiSat3BLNNsKUaCWHZB0rOGLCzMCtisyOo
# 4PzuL4UI21ik2zieO1qVM+Thqvw16kHtp6dD9pGk4X4ogGreGYEIxzBl79luR+AV
# NCRizoeFWTHKymS1tSoKrWT9ZNHcLmwemO6Tt1rMYk9jV3T4uY5e1NwxaUavEfsX
# f8dLfQjhNiySOoDknT1OSerBOVdTXURS2ri5H3GZxrxvJ4jOeFkn52C8r3YlZ3Wp
# Cr9LCUJZeXgwY+Q1JQ3D4VLY8aZ83txpw6XKEy0eTEv5wxkBj5LWhXx7hNb5F3lg
# bqaRYijVJn+P82wVxlftIzMfNeVBFHzFE90taPV5grJjr8lgrGBFmD7Puc97kfDX
# oTDBwRxJeew=
# =qTNA
# -----END PGP SIGNATURE-----
# gpg: Signature made Wed 20 Sep 2023 12:31:49 EDT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (28 commits)
block: mark aio_poll as non-coroutine
block-backend: process zoned requests in the current AioContext
block-backend: process I/O in the current AioContext
test-bdrv-drain: avoid race with BH in IOThread drain test
block: remove AIOCBInfo->get_aio_context()
qemu-img: map: report compressed data blocks
block: add BDRV_BLOCK_COMPRESSED flag for bdrv_block_status()
block: Mark bdrv_add/del_child() and caller GRAPH_WRLOCK
block: Mark bdrv_unref_child() GRAPH_WRLOCK
block: Mark bdrv_root_unref_child() GRAPH_WRLOCK
block: Take graph rdlock in bdrv_change_aio_context()
block: Take graph rdlock in bdrv_drop_intermediate()
block: Mark bdrv_parent_cb_change_media() GRAPH_RDLOCK
block: Mark bdrv_child_perm() GRAPH_RDLOCK
block: Mark bdrv_get_cumulative_perm() and callers GRAPH_RDLOCK
block: Mark bdrv_parent_perms_conflict() and callers GRAPH_RDLOCK
block: Mark bdrv_attach_child() GRAPH_WRLOCK
block: Call transaction callbacks with lock held
block: Mark bdrv_attach_child_common() GRAPH_WRLOCK
block: Mark bdrv_replace_child_tran() GRAPH_WRLOCK
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

block: Mark bdrv_unref_child() GRAPH_WRLOCK

Instead of taking the writer lock internally, require callers to already
hold it when calling bdrv_unref_child(). These callers will typically
already hol

block: Mark bdrv_unref_child() GRAPH_WRLOCK

Instead of taking the writer lock internally, require callers to already
hold it when calling bdrv_unref_child(). These callers will typically
already hold the graph lock once the locking work is completed, which
means that they can't call functions that take it internally.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20230911094620.45040-21-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Cleanup bs->backing and bs->file handling
- Refactor bdrv_try_set_aio_context using transactions
- Chang

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Cleanup bs->backing and bs->file handling
- Refactor bdrv_try_set_aio_context using transactions
- Changes for improved coroutine_fn consistency
- vhost-user-blk: fix the resize crash
- io_uring: Use of io_uring_register_ring_fd() led to breakage, revert
- vvfat: Fix some problems with r/w mode
- Code cleanup
- MAINTAINERS: Fold "Block QAPI, monitor, ..." into "Block layer core"

# -----BEGIN PGP SIGNATURE-----
#
# iQJFBAABCAAvFiEE3D3rFZqa+V09dFb+fwmycsiPL9YFAmNazhIRHGt3b2xmQHJl
# ZGhhdC5jb20ACgkQfwmycsiPL9ZyTw/8Dfck/SuxfyeLlnQItkjaV4cnqWOU8vHs
# 9x0KhlptCs+HXdF/3iicpA0lHojn7mNnbdFGjPRY4E0LriQv91TQ5ycdEmrseFPf
# sgeQlgdKCVU/pHjZ2wYarm2pE43Cx85a5xuufmw+7w49dNNZn14l4t+DgviuClVM
# nuVaogfZFbYyetre+Qd2TgLl+gJ+0d4o7Zs5lSWLrT8t0L9AGkcWPA7Nrbl6loIE
# dOautV4G7jLjuMiCeJZOGcnuRVe3gCQ5rCGBFzzH4DUtz4BmiYx4hd3LMEsP0PMM
# CrsfDZS04Ztybl9M7TmJuwkAm1gx1JDMOuJuh18lbJocIOBvhkKKxY2wI5LIdZVI
# ZntmU36RowkX+GGu/PYpYyMjBDClJppZCl7vnjyLYsVt6r0Vu6SmlHpJhcRYabhe
# 96Kv1LXH9A6+ogKPU3Layw6JGjg01GNr1ALuT7PO3pGto/JshmOuBEJJDucoF84M
# 5AfxFCohMROVldwblA6M0eKnlQBgtr5BvtgbV54BBo88VlFJgDJFQn7R09cTFUEo
# UwaJoS+nIaiZ0bQQVZhZloVppUaTdVJojzfVRCZZctga96/tu1HSFnGLnbEFpUN3
# KOf+XnVNS6Ro+nPSDf9bMjbIom2JicGFfV+6yMgIoxY/d5UA2dTZfefil4TAlSod
# 6PsTgg+jrm8=
# =/Fw0
# -----END PGP SIGNATURE-----
# gpg: Signature made Thu 27 Oct 2022 14:29:38 EDT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (58 commits)
block/block-backend: blk_set_enable_write_cache is IO_CODE
monitor: switch to *_co_* functions
vmdk: switch to *_co_* functions
vhdx: switch to *_co_* functions
vdi: switch to *_co_* functions
qed: switch to *_co_* functions
qcow2: switch to *_co_* functions
qcow: switch to *_co_* functions
parallels: switch to *_co_* functions
mirror: switch to *_co_* functions
block: switch to *_co_* functions
commit: switch to *_co_* functions
vmdk: manually add more coroutine_fn annotations
qcow2: manually add more coroutine_fn annotations
qcow: manually add more coroutine_fn annotations
blkdebug: add missing coroutine_fn annotation for indirect-called functions
qcow2: add coroutine_fn annotation for indirect-called functions
block: add missing coroutine_fn annotation to BlockDriverState callbacks
coroutine-io: add missing coroutine_fn annotation to prototypes
coroutine-lock: add missing coroutine_fn annotation to prototypes
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

block/snapshot: drop indirection around bdrv_snapshot_fallback_ptr

Now the indirection is not actually used, we can safely reduce it to
simple pointer. For consistency do a bit of refactoring to get

block/snapshot: drop indirection around bdrv_snapshot_fallback_ptr

Now the indirection is not actually used, we can safely reduce it to
simple pointer. For consistency do a bit of refactoring to get rid of
_ptr suffixes that become meaningless.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220726201134.924743-15-vsementsov@yandex-team.ru>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block: Manipulate bs->file / bs->backing pointers in .attach/.detach

bs->file and bs->backing are a kind of duplication of part of
bs->children. But very useful diplication, so let's not drop them a

block: Manipulate bs->file / bs->backing pointers in .attach/.detach

bs->file and bs->backing are a kind of duplication of part of
bs->children. But very useful diplication, so let's not drop them at
all:)

We should manage bs->file and bs->backing in same place, where we
manage bs->children, to keep them in sync.

Moreover, generic io paths are unprepared to BdrvChild without a bs, so
it's double good to clear bs->file / bs->backing when we detach the
child.

Detach is simple: if we detach bs->file or bs->backing child, just
set corresponding field to NULL.

Attach is a bit more complicated. But we still can precisely detect
should we set one of bs->file / bs->backing or not:

- if role is BDRV_CHILD_COW, we definitely deal with bs->backing
- else, if role is BDRV_CHILD_FILTERED (it must be also
BDRV_CHILD_PRIMARY), it's a filtered child. Use
bs->drv->filtered_child_is_backing to chose the pointer field to
modify.
- else, if role is BDRV_CHILD_PRIMARY, we deal with bs->file
- in all other cases, it's neither bs->backing nor bs->file. It's some
other child and we shouldn't care

OK. This change brings one more good thing: we can (and should) get rid
of all indirect pointers in the block-graph-change transactions:

bdrv_attach_child_common() stores BdrvChild** into transaction to clear
it on abort.

bdrv_attach_child_common() has two callers: bdrv_attach_child_noperm()
just pass-through this feature, bdrv_root_attach_child() doesn't need
the feature.

Look at bdrv_attach_child_noperm() callers:
- bdrv_attach_child() doesn't need the feature
- bdrv_set_file_or_backing_noperm() uses the feature to manage
bs->file and bs->backing, we don't want it anymore
- bdrv_append() uses the feature to manage bs->backing, again we
don't want it anymore

So, we should drop this stuff! Great!

We could probably keep BdrvChild** argument to keep the int return
value, but it seems not worth the complexity.

Finally, we now set .file / .backing automatically in generic code and
want to restring setting them by hand outside of .attach/.detach.
So, this patch cleanups all remaining places where they were set.
To find such places I use:

git grep '\->file ='
git grep '\->backing ='
git grep '&.*\<backing\>'
git grep '&.*\<file\>'

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220726201134.924743-14-vsementsov@yandex-team.ru>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block/snapshot: stress that we fallback to primary child

Actually what we chose is a primary child. Let's stress it in the code.

We are going to drop indirect pointer logic here in future. Actually

block/snapshot: stress that we fallback to primary child

Actually what we chose is a primary child. Let's stress it in the code.

We are going to drop indirect pointer logic here in future. Actually
this commit simplifies the future work: we drop use of indirection in
the assertion now.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220726201134.924743-9-vsementsov@yandex-team.ru>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

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

Block layer patches

- qemu-storage-daemon: Add --daemonize
- Fix x-blockdev-amend and block node activation code w

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

Block layer patches

- qemu-storage-daemon: Add --daemonize
- Fix x-blockdev-amend and block node activation code which incorrectly
executed code in the iothread that must run in the main thread.
- Add macros for coroutine-safe TLS variables (required for correctness
with LTO)
- Fix crashes with concurrent I/O and bdrv_refresh_limits()
- Split block APIs in global state and I/O
- iotests: Don't refuse to run at all without GNU sed, just skip tests
that need it

# gpg: Signature made Fri 04 Mar 2022 17:18:31 GMT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* remotes/kwolf-gitlab/tags/for-upstream: (50 commits)
block/amend: Keep strong reference to BDS
block/amend: Always call .bdrv_amend_clean()
tests/qemu-iotests: Rework the checks and spots using GNU sed
iotests/graph-changes-while-io: New test
iotests: Allow using QMP with the QSD
block: Make bdrv_refresh_limits() non-recursive
job.h: assertions in the callers of JobDriver function pointers
job.h: split function pointers in JobDriver
block-backend-common.h: split function pointers in BlockDevOps
block_int-common.h: assertions in the callers of BdrvChildClass function pointers
block_int-common.h: split function pointers in BdrvChildClass
block_int-common.h: assertions in the callers of BlockDriver function pointers
block_int-common.h: split function pointers in BlockDriver
block/coroutines: I/O and "I/O or GS" API
block/copy-before-write.h: global state API + assertions
include/block/snapshot: global state API + assertions
assertions for blockdev.h global state API
include/sysemu/blockdev.h: global state API
assertions for blockjob.h global state API
include/block/blockjob.h: global state API
...

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

show more ...