Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* configure: detect --cpu=mipsisa64r6
* target/i386: decode address before going back to translate.c
* meson: allow configuri

Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* configure: detect --cpu=mipsisa64r6
* target/i386: decode address before going back to translate.c
* meson: allow configuring the x86-64 baseline
* meson: remove dead optimization option
* exec: small changes to allow compilation with C++ in Android emulator
* fix SEV compilation on 32-bit systems

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# gpg: Signature made Fri 28 Jun 2024 10:26:57 AM PDT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (23 commits)
target/i386/sev: Fix printf formats
target/i386/sev: Use size_t for object sizes
target/i386: SEV: store pointer to decoded id_auth in SevSnpGuest
target/i386: SEV: rename sev_snp_guest->id_auth
target/i386: SEV: store pointer to decoded id_block in SevSnpGuest
target/i386: SEV: rename sev_snp_guest->id_block
target/i386: remove unused enum
target/i386: give CC_OP_POPCNT low bits corresponding to MO_TL
target/i386: use cpu_cc_dst for CC_OP_POPCNT
target/i386: fix CC_OP dump
include: move typeof_strip_qual to compiler.h, use it in QAPI_LIST_LENGTH()
exec: don't use void* in pointer arithmetic in headers
exec: avoid using C++ keywords in function parameters
block: rename former bdrv_file_open callbacks
block: remove separate bdrv_file_open callback
block: do not check bdrv_file_open
block: make assertion more generic
meson: remove dead optimization option
meson: allow configuring the x86-64 baseline
Revert "host/i386: assume presence of SSE2"
...

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

show more ...

block: remove separate bdrv_file_open callback

bdrv_file_open and bdrv_open are completely equivalent, they are
never checked except to see which one to invoke. So merge them
into a single one.

Si

block: remove separate bdrv_file_open callback

bdrv_file_open and bdrv_open are completely equivalent, they are
never checked except to see which one to invoke. So merge them
into a single one.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

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

Block layer patches

- Protect BlockBackend.queued_requests with its own lock
- Switch to AIO_WAIT_WHILE_UNLOCKED() where possi

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

Block layer patches

- Protect BlockBackend.queued_requests with its own lock
- Switch to AIO_WAIT_WHILE_UNLOCKED() where possible
- AioContext removal: LinuxAioState/LuringState/ThreadPool
- Add more coroutine_fn annotations, use bdrv/blk_co_*
- Fix crash when execute hmp_commit

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# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 25 Apr 2023 02:12:29 PM BST
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (25 commits)
block/monitor: Fix crash when executing HMP commit
vmdk: make vmdk_is_cid_valid a coroutine_fn
qcow2: mark various functions as coroutine_fn and GRAPH_RDLOCK
tests: mark more coroutine_fns
qemu-pr-helper: mark more coroutine_fns
9pfs: mark more coroutine_fns
nbd: mark more coroutine_fns, do not use co_wrappers
mirror: make mirror_flush a coroutine_fn, do not use co_wrappers
blkdebug: add missing coroutine_fn annotation
vvfat: mark various functions as coroutine_fn
thread-pool: avoid passing the pool parameter every time
thread-pool: use ThreadPool from the running thread
io_uring: use LuringState from the running thread
linux-aio: use LinuxAioState from the running thread
block: add missing coroutine_fn to bdrv_sum_allocated_file_size()
include/block: fixup typos
monitor: convert monitor_cleanup() to AIO_WAIT_WHILE_UNLOCKED()
hmp: convert handle_hmp_command() to AIO_WAIT_WHILE_UNLOCKED()
block: convert bdrv_drain_all_begin() to AIO_WAIT_WHILE_UNLOCKED()
block: convert bdrv_graph_wrlock() to AIO_WAIT_WHILE_UNLOCKED()
...

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

show more ...

thread-pool: avoid passing the pool parameter every time

thread_pool_submit_aio() is always called on a pool taken from
qemu_get_current_aio_context(), and that is the only intended
use: each pool r

thread-pool: avoid passing the pool parameter every time

thread_pool_submit_aio() is always called on a pool taken from
qemu_get_current_aio_context(), and that is the only intended
use: each pool runs only in the same thread that is submitting
work to it, it can't run anywhere else.

Therefore simplify the thread_pool_submit* API and remove the
ThreadPool function parameter.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20230203131731.851116-5-eesposit@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

thread-pool: use ThreadPool from the running thread

Use qemu_get_current_aio_context() where possible, since we always
submit work to the current thread anyways.

We want to also be sure that the th

thread-pool: use ThreadPool from the running thread

Use qemu_get_current_aio_context() where possible, since we always
submit work to the current thread anyways.

We want to also be sure that the thread submitting the work is
the same as the one processing the pool, to avoid adding
synchronization to the pool list.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20230203131731.851116-4-eesposit@redhat.com>
Reviewed-by: Kevin Wolf <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

- Fix VHDX image corruption bug
- Fix for performance regression: Remove bdrv_co_get_geometry coroutines

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

Block layer patches

- Fix VHDX image corruption bug
- Fix for performance regression: Remove bdrv_co_get_geometry coroutines
from I/O hot path

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# gpg: Signature made Tue 11 Apr 2023 15:52:32 BST
# 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:
block, block-backend: write some hot coroutine wrappers by hand
block-backend: ignore inserted state in blk_co_nb_sectors
block-backend: inline bdrv_co_get_geometry
migration/block: replace uses of blk_nb_sectors that do not check result
block: remove has_variable_length from BlockDriver
block: refresh bs->total_sectors on reopen
block: remove has_variable_length from filters
block: move has_variable_length to BlockLimits
iotests: Regression test for vhdx log corruption
block/vhdx: fix dynamic VHDX BAT corruption

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

show more ...

block: remove has_variable_length from BlockDriver

Fill in the field in BlockLimits directly for host devices, and
copy it from there for the raw format.

Signed-off-by: Paolo Bonzini <pbonzini@redh

block: remove has_variable_length from BlockDriver

Fill in the field in BlockLimits directly for host devices, and
copy it from there for the raw format.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20230407153303.391121-5-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <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

- Lock the graph, part 2 (BlockDriver callbacks)
- virtio-scsi: fix SCSIDevice hot unplug with IOThread
-

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

Block layer patches

- Lock the graph, part 2 (BlockDriver callbacks)
- virtio-scsi: fix SCSIDevice hot unplug with IOThread
- rbd: Add support for layered encryption

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# gpg: Signature made Thu 23 Feb 2023 18:49:41 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

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (29 commits)
block/rbd: Add support for layered encryption
block/rbd: Add luks-any encryption opening option
block/rbd: Remove redundant stack variable passphrase_len
virtio-scsi: reset SCSI devices from main loop thread
dma-helpers: prevent dma_blk_cb() vs dma_aio_cancel() race
scsi: protect req->aiocb with AioContext lock
block: Mark bdrv_co_refresh_total_sectors() and callers GRAPH_RDLOCK
block: Mark bdrv_*_dirty_bitmap() and callers GRAPH_RDLOCK
block: Mark bdrv_co_delete_file() and callers GRAPH_RDLOCK
block: Mark bdrv_(un)register_buf() GRAPH_RDLOCK
block: Mark bdrv_co_eject/lock_medium() and callers GRAPH_RDLOCK
block: Mark bdrv_co_is_inserted() and callers GRAPH_RDLOCK
block: Mark bdrv_co_io_(un)plug() and callers GRAPH_RDLOCK
block: Mark bdrv_co_create() and callers GRAPH_RDLOCK
block: Mark preadv_snapshot/snapshot_block_status GRAPH_RDLOCK
block: Mark bdrv_co_copy_range() GRAPH_RDLOCK
block: Mark bdrv_co_do_pwrite_zeroes() GRAPH_RDLOCK
block: Mark bdrv_co_pwrite_sync() and callers GRAPH_RDLOCK
block: Mark public read/write functions GRAPH_RDLOCK
block: Mark read/write in block/io.c GRAPH_RDLOCK
...

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

show more ...

block: Mark bdrv_co_create() and callers GRAPH_RDLOCK

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

Signed-off-by: Emanuel

block: Mark bdrv_co_create() and callers GRAPH_RDLOCK

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

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230203152202.49054-17-kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@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

- qemu-img info: Show protocol-level information
- Move more functions to coroutines
- Make coroutine anno

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

Block layer patches

- qemu-img info: Show protocol-level information
- Move more functions to coroutines
- Make coroutine annotations ready for static analysis
- qemu-img: Fix exit code for errors closing the image
- qcow2 bitmaps: Fix theoretical corruption in error path
- pflash: Only load non-zero parts of backend image to save memory
- Code cleanup and test case improvements

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# -----END PGP SIGNATURE-----
# gpg: Signature made Wed 01 Feb 2023 16:00:53 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

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (38 commits)
qemu-img: Change info key names for protocol nodes
qemu-img: Let info print block graph
iotests/106, 214, 308: Read only one size line
iotests: Filter child node information
block/qapi: Add indentation to bdrv_node_info_dump()
block/qapi: Introduce BlockGraphInfo
block/qapi: Let bdrv_query_image_info() recurse
qemu-img: Use BlockNodeInfo
block: Split BlockNodeInfo off of ImageInfo
block/vmdk: Change extent info type
block/file: Add file-specific image info
block: Improve empty format-specific info dump
block/nbd: Add missing <qemu/bswap.h> include
block: Rename bdrv_load/save_vmstate() to bdrv_co_load/save_vmstate()
block: Convert bdrv_debug_event() to co_wrapper_mixed
block: Convert bdrv_lock_medium() to co_wrapper
block: Convert bdrv_eject() to co_wrapper
block: Convert bdrv_get_info() to co_wrapper_mixed
block: Convert bdrv_get_allocated_file_size() to co_wrapper
block: use bdrv_co_refresh_total_sectors when possible
...

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

show more ...

block: Convert bdrv_get_allocated_file_size() to co_wrapper

bdrv_get_allocated_file_size() is categorized as an I/O function, and it
currently doesn't run in a coroutine. We should let it take a gra

block: Convert bdrv_get_allocated_file_size() to co_wrapper

bdrv_get_allocated_file_size() is categorized as an I/O function, and it
currently doesn't run in a coroutine. We should let it take a graph
rdlock since it traverses the block nodes graph, which however is only
possible in a coroutine.

Therefore turn it into a co_wrapper to move the actual function into a
coroutine where the lock can be taken.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230113204212.359076-10-kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block: Convert bdrv_refresh_total_sectors() to co_wrapper_mixed

BlockDriver->bdrv_getlength is categorized as IO callback, and it
currently doesn't run in a coroutine. We should let it take a graph

block: Convert bdrv_refresh_total_sectors() to co_wrapper_mixed

BlockDriver->bdrv_getlength is categorized as IO callback, and it
currently doesn't run in a coroutine. We should let it take a graph
rdlock since the callback traverses the block nodes graph, which however
is only possible in a coroutine.

Therefore turn it into a co_wrapper to move the actual function into a
coroutine where the lock can be taken.

Because now this function creates a new coroutine and polls, we need to
take the AioContext lock where it is missing, for the only reason that
internally co_wrapper calls AIO_WAIT_WHILE and it expects to release the
AioContext lock.

This is especially messy when a co_wrapper creates a coroutine and polls
in bdrv_open_driver, because this function has so many callers in so
many context that it can easily lead to deadlocks. Therefore the new
rule for bdrv_open_driver is that the caller must always hold the
AioContext lock of the given bs (except if it is a coroutine), because
the function calls bdrv_refresh_total_sectors() which is now a
co_wrapper.

Once the rwlock is ultimated and placed in every place it needs to be,
we will poll using AIO_WAIT_WHILE_UNLOCKED and remove the AioContext
lock.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230113204212.359076-7-kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge tag 'pull-include-2023-01-20' of https://repo.or.cz/qemu/armbru into staging

Header cleanup patches for 2023-01-20

# -----BEGIN PGP SIGNATURE-----
#
# iQJGBAABCAAwFiEENUvIs9frKmtoZ05fOHC0AOuR

Merge tag 'pull-include-2023-01-20' of https://repo.or.cz/qemu/armbru into staging

Header cleanup patches for 2023-01-20

# -----BEGIN PGP SIGNATURE-----
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# P/lTTiRg5ksvhDYtJnW3mSfmT2PY7aBtyE3D1Z84v9hek6D0reMQTE97yL/j4m7P
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# SURwr58rB2zo
# =dOfq
# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 20 Jan 2023 06:41:42 GMT
# 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-include-2023-01-20' of https://repo.or.cz/qemu/armbru:
include/hw/ppc include/hw/pci-host: Drop extra typedefs
include/hw/ppc: Don't include hw/pci-host/pnv_phb.h from pnv.h
include/hw/ppc: Supply a few missing includes
include/hw/ppc: Split pnv_chip.h off pnv.h
include/hw/block: Include hw/block/block.h where needed
hw/sparc64/niagara: Use blk_name() instead of open-coding it
include/block: Untangle inclusion loops
coroutine: Use Coroutine typedef name instead of structure tag
coroutine: Split qemu/coroutine-core.h off qemu/coroutine.h
coroutine: Clean up superfluous inclusion of qemu/lockable.h
coroutine: Move coroutine_fn to qemu/osdep.h, trim includes
coroutine: Clean up superfluous inclusion of qemu/coroutine.h

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

show more ...

include/block: Untangle inclusion loops

We have two inclusion loops:

block/block.h
-> block/block-global-state.h
-> block/block-common.h
-> block/blockjob.h
-> block/block.h

include/block: Untangle inclusion loops

We have two inclusion loops:

block/block.h
-> block/block-global-state.h
-> block/block-common.h
-> block/blockjob.h
-> block/block.h

block/block.h
-> block/block-io.h
-> block/block-common.h
-> block/blockjob.h
-> block/block.h

I believe these go back to Emanuele's reorganization of the block API,
merged a few months ago in commit d7e2fe4aac8.

Fortunately, breaking them is merely a matter of deleting unnecessary
includes from headers, and adding them back in places where they are
now missing.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221221133551.3967339-2-armbru@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2021-09-27-v2' into staging

nbd patches for 2021-09-27

- Vladimir Sementsov-Ogievskiy: Rework coroutines of qemu NBD client
to improve re

Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2021-09-27-v2' into staging

nbd patches for 2021-09-27

- Vladimir Sementsov-Ogievskiy: Rework coroutines of qemu NBD client
to improve reconnect support
- Eric Blake: Relax server in regards to NBD_OPT_LIST_META_CONTEXT
- Vladimir Sementsov-Ogievskiy: Plumb up 64-bit bulk-zeroing support
in block layer, in preparation for future NBD spec extensions
- Nir Soffer: Default to writeback cache in qemu-nbd

# gpg: Signature made Wed 29 Sep 2021 22:07:58 BST
# gpg: using RSA key 71C2CC22B1C4602927D2F3AAA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg: aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg: aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2 F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-nbd-2021-09-27-v2:
block/nbd: check that received handle is valid
block/nbd: drop connection_co
block/nbd: refactor nbd_recv_coroutines_wake_all()
block/nbd: move nbd_recv_coroutines_wake_all() up
block/nbd: nbd_channel_error() shutdown channel unconditionally
nbd/client-connection: nbd_co_establish_connection(): fix non set errp
nbd/server: Allow LIST_META_CONTEXT without STRUCTURED_REPLY
block/io: allow 64bit discard requests
block: use int64_t instead of int in driver discard handlers
block: make BlockLimits::max_pdiscard 64bit
block/io: allow 64bit write-zeroes requests
block: use int64_t instead of int in driver write_zeroes handlers
block: make BlockLimits::max_pwrite_zeroes 64bit
block: use int64_t instead of uint64_t in copy_range driver handlers
block: use int64_t instead of uint64_t in driver write handlers
block: use int64_t instead of uint64_t in driver read handlers
qcow2: check request on vmstate save/load path
block/io: bring request check to bdrv_co_(read,write)v_vmstate
qemu-nbd: Change default cache mode to writeback

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

show more ...

block: use int64_t instead of uint64_t in driver write handlers

We are generally moving to int64_t for both offset and bytes parameters
on all io paths.

Main motivation is realization of 64-bit wri

block: use int64_t instead of uint64_t in driver write handlers

We are generally moving to int64_t for both offset and bytes parameters
on all io paths.

Main motivation is realization of 64-bit write_zeroes operation for
fast zeroing large disk chunks, up to the whole disk.

We chose signed type, to be consistent with off_t (which is signed) and
with possibility for signed return type (where negative value means
error).

So, convert driver write handlers parameters which are already 64bit to
signed type.

While being here, convert also flags parameter to be BdrvRequestFlags.

Now let's consider all callers. Simple

git grep '\->bdrv_\(aio\|co\)_pwritev\(_part\)\?'

shows that's there three callers of driver function:

bdrv_driver_pwritev() and bdrv_driver_pwritev_compressed() in
block/io.c, both pass int64_t, checked by bdrv_check_qiov_request() to
be non-negative.

qcow2_save_vmstate() does bdrv_check_qiov_request().

Still, the functions may be called directly, not only by drv->...
Let's check:

git grep '\.bdrv_\(aio\|co\)_pwritev\(_part\)\?\s*=' | \
awk '{print $4}' | sed 's/,//' | sed 's/&//' | sort | uniq | \
while read func; do git grep "$func(" | \
grep -v "$func(BlockDriverState"; done

shows several callers:

qcow2:
qcow2_co_truncate() write at most up to @offset, which is checked in
generic qcow2_co_truncate() by bdrv_check_request().
qcow2_co_pwritev_compressed_task() pass the request (or part of the
request) that already went through normal write path, so it should
be OK

qcow:
qcow_co_pwritev_compressed() pass int64_t, it's updated by this patch

quorum:
quorum_co_pwrite_zeroes() pass int64_t and int - OK

throttle:
throttle_co_pwritev_compressed() pass int64_t, it's updated by this
patch

vmdk:
vmdk_co_pwritev_compressed() pass int64_t, it's updated by this
patch

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210903102807.27127-5-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

show more ...

block: use int64_t instead of uint64_t in driver read handlers

We are generally moving to int64_t for both offset and bytes parameters
on all io paths.

Main motivation is realization of 64-bit writ

block: use int64_t instead of uint64_t in driver read handlers

We are generally moving to int64_t for both offset and bytes parameters
on all io paths.

Main motivation is realization of 64-bit write_zeroes operation for
fast zeroing large disk chunks, up to the whole disk.

We chose signed type, to be consistent with off_t (which is signed) and
with possibility for signed return type (where negative value means
error).

So, convert driver read handlers parameters which are already 64bit to
signed type.

While being here, convert also flags parameter to be BdrvRequestFlags.

Now let's consider all callers. Simple

git grep '\->bdrv_\(aio\|co\)_preadv\(_part\)\?'

shows that's there three callers of driver function:

bdrv_driver_preadv() in block/io.c, passes int64_t, checked by
bdrv_check_qiov_request() to be non-negative.

qcow2_load_vmstate() does bdrv_check_qiov_request().

do_perform_cow_read() has uint64_t argument. And a lot of things in
qcow2 driver are uint64_t, so converting it is big job. But we must
not work with requests that don't satisfy bdrv_check_qiov_request(),
so let's just assert it here.

Still, the functions may be called directly, not only by drv->...
Let's check:

git grep '\.bdrv_\(aio\|co\)_preadv\(_part\)\?\s*=' | \
awk '{print $4}' | sed 's/,//' | sed 's/&//' | sort | uniq | \
while read func; do git grep "$func(" | \
grep -v "$func(BlockDriverState"; done

The only one such caller:

QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, &data, 1);
...
ret = bdrv_replace_test_co_preadv(bs, 0, 1, &qiov, 0);

in tests/unit/test-bdrv-drain.c, and it's OK obviously.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210903102807.27127-4-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: fix typos]
Signed-off-by: Eric Blake <eblake@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/hreitz/tags/pull-block-2021-09-01' into staging

Block patches:
- Make the backup-top filter driver available for user-created block
nodes (i.e. via blockdev-a

Merge remote-tracking branch 'remotes/hreitz/tags/pull-block-2021-09-01' into staging

Block patches:
- Make the backup-top filter driver available for user-created block
nodes (i.e. via blockdev-add)
- Allow running iotests with gdb or valgrind being attached to qemu
instances
- Fix the raw format driver's permissions: There is no metadata, so we
only need WRITE or RESIZE when the parent needs it
- Basic reopen implementation for win32 files (file-win32.c) so that
qemu-img commit can work
- uclibc/musl build fix for the FUSE export code
- Some iotests delinting
- block-hmp-cmds.c refactoring

# gpg: Signature made Wed 01 Sep 2021 16:01:54 BST
# gpg: using RSA key CB62D7A0EE3829E45F004D34A1FA40D098019CDF
# gpg: issuer "hreitz@redhat.com"
# gpg: Good signature from "Hanna Reitz <hreitz@redhat.com>" [marginal]
# 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: CB62 D7A0 EE38 29E4 5F00 4D34 A1FA 40D0 9801 9CDF

* remotes/hreitz/tags/pull-block-2021-09-01: (56 commits)
block/file-win32: add reopen handlers
block/export/fuse.c: fix fuse-lseek on uclibc or musl
block/block-copy: block_copy_state_new(): drop extra arguments
iotests/image-fleecing: add test-case for copy-before-write filter
iotests/image-fleecing: prepare for adding new test-case
iotests/image-fleecing: rename tgt_node
iotests/image-fleecing: proper source device
iotests.py: hmp_qemu_io: support qdev
iotests: move 222 to tests/image-fleecing
iotests/222: constantly use single quotes for strings
iotests/222: fix pylint and mypy complains
python:QEMUMachine: template typing for self returning methods
python/qemu/machine: QEMUMachine: improve qmp() method
python/qemu/machine.py: refactor _qemu_args()
qapi: publish copy-before-write filter
block/copy-before-write: make public block driver
block/block-copy: make setting progress optional
block/copy-before-write: initialize block-copy bitmap
block/copy-before-write: cbw_init(): use options
block/copy-before-write: bdrv_cbw_append(): drop unused compress arg
...

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

show more ...

block/file-win32: add reopen handlers

Make 'qemu-img commit' work on Windows.

Command 'commit' requires reopening backing file in RW mode. So,
add reopen prepare/commit/abort handlers and change dw

block/file-win32: add reopen handlers

Make 'qemu-img commit' work on Windows.

Command 'commit' requires reopening backing file in RW mode. So,
add reopen prepare/commit/abort handlers and change dwShareMode
for CreateFile call in order to allow further read/write reopening.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/418

Suggested-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Viktor Prutyanov <viktor.prutyanov@phystech.edu>
Tested-by: Helge Konetzka <hk@zapateado.de>
Message-Id: <20210825173625.19415-1-viktor.prutyanov@phystech.edu>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

show more ...

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

block: improve error reporting for unsupported O_DIRECT

# gpg: Signature made Wed 16 Sep 2020 10:45:48 B

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

block: improve error reporting for unsupported O_DIRECT

# gpg: Signature made Wed 16 Sep 2020 10:45:48 BST
# gpg: using RSA key DAF3A6FDB26B62912D0E8E3FBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>" [full]
# gpg: aka "Daniel P. Berrange <berrange@redhat.com>" [full]
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E 8E3F BE86 EBB4 1510 4FDF

* remotes/berrange/tags/block-odirect-pull-request:
block/file: switch to use qemu_open/qemu_create for improved errors
util: give a specific error message when O_DIRECT doesn't work
util: introduce qemu_open and qemu_create with error reporting
util: add Error object for qemu_open_internal error reporting
util: refactor qemu_open_old to split off variadic args handling
util: rename qemu_open() to qemu_open_old()
util: split off a helper for dealing with O_CLOEXEC flag
monitor: simplify functions for getting a dup'd fdset entry

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

show more ...

block/file: switch to use qemu_open/qemu_create for improved errors

Currently at startup if using cache=none on a filesystem lacking
O_DIRECT such as tmpfs, at startup QEMU prints

qemu-system-x86_6

block/file: switch to use qemu_open/qemu_create for improved errors

Currently at startup if using cache=none on a filesystem lacking
O_DIRECT such as tmpfs, at startup QEMU prints

qemu-system-x86_64: -drive file=/tmp/foo.img,cache=none: file system may not support O_DIRECT
qemu-system-x86_64: -drive file=/tmp/foo.img,cache=none: Could not open '/tmp/foo.img': Invalid argument

while at QMP level the hint is missing, so QEMU reports just

"error": {
"class": "GenericError",
"desc": "Could not open '/tmp/foo.img': Invalid argument"
}

which is close to useless for the end user trying to figure out what
they did wrong.

With this change at startup QEMU prints

qemu-system-x86_64: -drive file=/tmp/foo.img,cache=none: Unable to open '/tmp/foo.img': filesystem does not support O_DIRECT

while at the QMP level QEMU reports a massively more informative

"error": {
"class": "GenericError",
"desc": "Unable to open '/tmp/foo.img': filesystem does not support O_DIRECT"
}

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

show more ...

util: rename qemu_open() to qemu_open_old()

We want to introduce a new version of qemu_open() that uses an Error
object for reporting problems and make this it the preferred interface.
Rename the ex

util: rename qemu_open() to qemu_open_old()

We want to introduce a new version of qemu_open() that uses an Error
object for reporting problems and make this it the preferred interface.
Rename the existing method to release the namespace for the new impl.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

show more ...

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

Block layer patches:

- qemu-img create: Fail gracefully when backing file is an empty string
- Fixes related to filter bl

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

Block layer patches:

- qemu-img create: Fail gracefully when backing file is an empty string
- Fixes related to filter block nodes ("Deal with filters" series)
- block/nvme: Various cleanups required to use multiple queues
- block/nvme: Use NvmeBar structure from "block/nvme.h"
- file-win32: Fix "locking" option
- iotests: Allow running from different directory

# gpg: Signature made Thu 10 Sep 2020 10:11:19 BST
# 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/kevin/tags/for-upstream: (65 commits)
block/qcow2-cluster: Add missing "fallthrough" annotation
block/nvme: Pair doorbell registers
block/nvme: Use generic NvmeBar structure
block/nvme: Group controller registers in NVMeRegs structure
file-win32: Fix "locking" option
iotests: Allow running from different directory
iotests: Test committing to overridden backing
iotests: Add test for commit in sub directory
iotests: Add filter mirror test cases
iotests: Add filter commit test cases
iotests: Let complete_and_wait() work with commit
iotests: Test that qcow2's data-file is flushed
block: Leave BDS.backing_{file,format} constant
block: Inline bdrv_co_block_status_from_*()
blockdev: Fix active commit choice
block: Drop backing_bs()
qemu-img: Use child access functions
nbd: Use CAF when looking for dirty bitmap
commit: Deal with filters
backup: Deal with filters
...

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

show more ...

file-win32: Fix "locking" option

The intended behaviour was that locking=off/auto work and have no
effect (to remain compatible with file-posix), whereas locking=on would
return an error. Unfortunat

file-win32: Fix "locking" option

The intended behaviour was that locking=off/auto work and have no
effect (to remain compatible with file-posix), whereas locking=on would
return an error. Unfortunately, the code forgot to remove "locking" from
the options QDict, so any attempt to use the option would fail.

Replace the option parsing code for "locking" with something that is
part of the raw_runtime_opts QemuOptsList (so it is properly removed
from the QDict) and looks more like file-posix.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200907092739.9988-1-kwolf@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2020-07-07-v2' into staging

Error reporting patches patches for 2020-07-07

# gpg: Signature made Fri 10 Jul 2020 14:24:42 BST
# gpg:

Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2020-07-07-v2' into staging

Error reporting patches patches for 2020-07-07

# gpg: Signature made Fri 10 Jul 2020 14:24:42 BST
# 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

* remotes/armbru/tags/pull-error-2020-07-07-v2: (53 commits)
xen: Use ERRP_GUARD()
nbd: Use ERRP_GUARD()
virtio-9p: Use ERRP_GUARD()
fw_cfg: Use ERRP_GUARD()
pflash: Use ERRP_GUARD()
sd: Use ERRP_GUARD()
scripts: Coccinelle script to use ERRP_GUARD()
error: New macro ERRP_GUARD()
hmp: Ignore Error objects where the return value suffices
qdev: Ignore Error objects where the return value suffices
qemu-img: Ignore Error objects where the return value suffices
error: Avoid error_propagate() after migrate_add_blocker()
qapi: Purge error_propagate() from QAPI core
qapi: Smooth visitor error checking in generated code
qapi: Smooth another visitor error checking pattern
block/parallels: Simplify parallels_open() after previous commit
error: Reduce unnecessary error propagation
error: Eliminate error_propagate() manually
error: Eliminate error_propagate() with Coccinelle, part 2
error: Eliminate error_propagate() with Coccinelle, part 1
...

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

show more ...