This patch is pure refactoring: instead of hard-coding permission to
use a protocol prefix when creating an image, the drivers can now pass
in a parameter, comparable to what they could already do for opening a
pre-existing image. This patch is purely mechanical (all drivers pass
in true for now), but it will enable the next patch to cater to
drivers that want to differ in behavior for the primary image vs. any
secondary images that are opened at the same time as creating the
primary image.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-ID: <20250915213919.3121401-5-eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Bring the block files in line with the QEMU coding style, with spaces
for indentation. This patch partially resolves the issue 371.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/371
Signed-off-by: Yeqi Fu <fufuyqqqqqq@gmail.com>
Message-ID: <20230325085224.23842-1-fufuyqqqqqq@gmail.com>
[thuth: Rebased the patch to the current master branch]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20251007163511.334178-1-thuth@redhat.com>
[kwolf: Fixed up vertical alignemnt]
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
AioContext has its own io_uring instance for file descriptor monitoring.
The disk I/O io_uring code was developed separately. Originally I
thought the characteristics of file descriptor monitoring and disk I/O
were too different, requiring separate io_uring instances.
Now it has become clear to me that it's feasible to share a single
io_uring instance for file descriptor monitoring and disk I/O. We're not
using io_uring's IOPOLL feature or anything else that would require a
separate instance.
Unify block/io_uring.c and util/fdmon-io_uring.c using the new
aio_add_sqe() API that allows user-defined io_uring sqe submission. Now
block/io_uring.c just needs to submit readv/writev/fsync and most of the
io_uring-specific logic is handled by fdmon-io_uring.c.
There are two immediate advantages:
1. Fewer system calls. There is no need to monitor the disk I/O io_uring
ring fd from the file descriptor monitoring io_uring instance. Disk
I/O completions are now picked up directly. Also, sqes are
accumulated in the sq ring until the end of the event loop iteration
and there are fewer io_uring_enter(2) syscalls.
2. Less code duplication.
Note that error_setg() messages are not supposed to end with
punctuation, so I removed a '.' for the non-io_uring build error
message.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-ID: <20251104022933.618123-15-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Introduce the aio_add_sqe() API for submitting io_uring requests in the
current AioContext. This allows other components in QEMU, like the block
layer, to take advantage of io_uring features without creating their own
io_uring context.
This API supports nested event loops just like file descriptor
monitoring and BHs do. This comes at a complexity cost: CQE callbacks
must be placed on a list so that nested event loops can invoke pending
CQE callbacks from parent event loops. If you're wondering why
CqeHandler exists instead of just a callback function pointer, this is
why.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-ID: <20251104022933.618123-14-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The ppoll and epoll file descriptor monitoring implementations rely on
the event loop's generic file descriptor, timer, and BH dispatch code to
invoke user callbacks.
The io_uring file descriptor monitoring implementation will need
io_uring-specific dispatch logic for CQE handlers for custom SQEs.
Introduce a new FDMonOps ->dispatch() callback that allows file
descriptor monitoring implementations to invoke user callbacks. The next
patch will use this new callback.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20251104022933.618123-13-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
When aio_context_new() -> aio_context_setup() fails at startup it
doesn't really matter whether errors are returned to the caller or the
process terminates immediately.
However, it is not acceptable to terminate when hotplugging --object
iothread at runtime. Refactor aio_context_setup() so that errors can be
propagated. The next commit will set errp when fdmon_io_uring_setup()
fails.
Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20251104022933.618123-10-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
g_source_destroy() only removes the GSource from the GMainContext it's
attached to, if any. It does not free it.
Use g_source_unref() instead so that the AioContext (which embeds a
GSource) is freed. There is no need to call g_source_destroy() in
aio_context_new() because the GSource isn't attached to a GMainContext
yet.
aio_ctx_finalize() expects everything to be set up already, so introduce
the new ctx->initialized boolean and do nothing when called with
!initialized. This also requires moving aio_context_setup() down after
event_notifier_init() since aio_ctx_finalize() won't release any
resources that aio_context_setup() acquired.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-ID: <20251104022933.618123-9-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
There is no need for aio_context_use_g_source() now that epoll(7) and
io_uring(7) file descriptor monitoring works with the glib event loop.
AioContext doesn't need to be notified that GSource is being used.
On hosts with io_uring support this now enables fdmon-io_uring.c by
default, replacing fdmon-poll.c and fdmon-epoll.c. In other words, the
event loop will use io_uring!
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20251104022933.618123-8-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
AioContext's glib integration only supports ppoll(2) file descriptor
monitoring. epoll(7) and io_uring(7) disable themselves and switch back
to ppoll(2) when the glib event loop is used. The main loop thread
cannot use epoll(7) or io_uring(7) because it always uses the glib event
loop.
Future QEMU features may require io_uring(7). One example is uring_cmd
support in FUSE exports. Each feature could create its own io_uring(7)
context and integrate it into the event loop, but this is inefficient
due to extra syscalls. It would be more efficient to reuse the
AioContext's existing fdmon-io_uring.c io_uring(7) context because
fdmon-io_uring.c will already be active on systems where Linux io_uring
is available.
In order to keep fdmon-io_uring.c's AioContext operational even when the
glib event loop is used, extend FDMonOps with an API similar to
GSourceFuncs so that file descriptor monitoring can integrate into the
glib event loop.
A quick summary of the GSourceFuncs API:
- prepare() is called each event loop iteration before waiting for file
descriptors and timers.
- check() is called to determine whether events are ready to be
dispatched after waiting.
- dispatch() is called to process events.
More details here: https://docs.gtk.org/glib/struct.SourceFuncs.html
Move the ppoll(2)-specific code from aio-posix.c into fdmon-poll.c and
also implement epoll(7)- and io_uring(7)-specific file descriptor
monitoring code for glib event loops.
Note that it's still faster to use aio_poll() rather than the glib event
loop since glib waits for file descriptor activity with ppoll(2) and
does not support adaptive polling. But at least epoll(7) and io_uring(7)
now work in glib event loops.
Splitting this into multiple commits without temporarily breaking
AioContext proved difficult so this commit makes all the changes. The
next commit will remove the aio_context_use_g_source() API because it is
no longer needed.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-ID: <20251104022933.618123-7-stefanha@redhat.com>
[kwolf: Build fixes; fix AioContext.list_lock use after destroy]
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Adds a new entry VTDPASIDCacheEntry in VTDAddressSpace to cache the pasid
entry and track PASID usage and future PASID tagged DMA address translation
support in vIOMMU.
When guest triggers pasid cache invalidation, QEMU will capture it and
update or invalidate pasid cache.
vIOMMU emulator could figure out the reason by fetching latest guest pasid
entry in memory and compare it with cached PASID entry if it's valid.
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20251017093602.525338-2-zhenzhong.duan@intel.com>
- Add RPMB emulation to eMMC model
- Use generic MachineState::fdt field in microvm machine
- Remove dead code in ac97_realize()
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Merge tag 'hw-misc-20251104' of https://github.com/philmd/qemu into staging
Misc HW patches
- Add RPMB emulation to eMMC model
- Use generic MachineState::fdt field in microvm machine
- Remove dead code in ac97_realize()
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# gpg: Signature made Wed 05 Nov 2025 09:56:35 AM CET
# gpg: using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [unknown]
# 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: FAAB E75E 1291 7221 DCFD 6BB2 E3E3 2C2C DEAD C0DE
* tag 'hw-misc-20251104' of https://github.com/philmd/qemu:
hw/audio: Remove dead code from ac97_realize
hw/i386/microvm: Use fdt field from MachineState
docs: Add eMMC device model description
scripts: Add helper script to generate eMMC block device images
hw/sd/sdcard: Handle RPMB MAC field
hw/sd/sdcard: Add basic support for RPMB partition
hw/sd/sdcard: Allow user creation of eMMCs
hw/sd/sdcard: Fix size check for backing block image
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
As part of the Google Summer of Code 2025 program "Implementing LASI Network
Card and NCR 710 SCSI Controller Device Models" Soumyajyotii Ssarkar fixed
various bugs and enhanced the existing Qemu i82596 network card implementation.
Specifically he added or fixed the following functionality:
- Monitor Mode
- Promiscuous Mode
- Support for linear mode, segmented mode, and flexible memory models
- RX Timer
- Bus Throttle Timers
- Support for Little Endian mode
- Accurate CU and RU transition State
- HP-UX Specific Behavior Support
- Support for Loopback mode
- Self test
- Statistical counters
- VMstate descriptors
- Polling mechanism
- Transmit and Receive functions
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Merge tag 'i82596-fixes-pull-request' of https://github.com/hdeller/qemu-hppa into staging
LASI i82596 network driver fixes
As part of the Google Summer of Code 2025 program "Implementing LASI Network
Card and NCR 710 SCSI Controller Device Models" Soumyajyotii Ssarkar fixed
various bugs and enhanced the existing Qemu i82596 network card implementation.
Specifically he added or fixed the following functionality:
- Monitor Mode
- Promiscuous Mode
- Support for linear mode, segmented mode, and flexible memory models
- RX Timer
- Bus Throttle Timers
- Support for Little Endian mode
- Accurate CU and RU transition State
- HP-UX Specific Behavior Support
- Support for Loopback mode
- Self test
- Statistical counters
- VMstate descriptors
- Polling mechanism
- Transmit and Receive functions
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# gpg: Signature made Tue 04 Nov 2025 04:21:56 PM CET
# gpg: using EDDSA key BCE9123E1AD29F07C049BBDEF712B510A23A0F5F
# gpg: Good signature from "Helge Deller <deller@gmx.de>" [unknown]
# gpg: aka "Helge Deller <deller@kernel.org>" [unknown]
# 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: 4544 8228 2CD9 10DB EF3D 25F8 3E5F 3D04 A7A2 4603
# Subkey fingerprint: BCE9 123E 1AD2 9F07 C049 BBDE F712 B510 A23A 0F5F
* tag 'i82596-fixes-pull-request' of https://github.com/hdeller/qemu-hppa:
i82596: Implement enhanced TX/RX with packet queuing and filtering
i82596: Added core infrastructure and helper functions
hw/hppa: Enable LASI i82596 network on 715 machine
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
MachineState already provides an fdt field, remove it from
MicrovmMachineState and use that instead.
This is useful when using the `dumpdtb` option, as QEMU expects the
device tree to be stored in the MachineState struct, otherwise it
will return this error:
qemu-system-x86_64: This machine doesn't have an FDT
Signed-off-by: Luigi Leonardi <leonardi@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20251030-fix_microvm-v1-1-f89544a04be3@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
* Move Aspeed machine models in separate source files to ease maintenance
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Merge tag 'pull-aspeed-20251104' of https://github.com/legoater/qemu into staging
aspeed queue:
* Move Aspeed machine models in separate source files to ease maintenance
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# gpg: Signature made Tue 04 Nov 2025 09:31:17 AM CET
# gpg: using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@redhat.com>" [full]
# gpg: aka "Cédric Le Goater <clg@kaod.org>" [full]
* tag 'pull-aspeed-20251104' of https://github.com/legoater/qemu: (30 commits)
hw/arm/aspeed: Split AST1030 EVB machine into a separate source file for maintainability
hw/arm/aspeed: Rename and export connect_serial_hds_to_uarts() as aspeed_connect_serial_hds_to_uarts()
hw/arm/aspeed: Split AST2700 EVB machine into a separate source file for maintainability
hw/arm/aspeed: Split AST2600 EVB machine into a separate source file for maintainability
hw/arm/aspeed: Split Catalina machine into a separate source file for maintainability
hw/arm/aspeed: Split Rainier machine into a separate source file for maintainability
hw/arm/aspeed: Split GB200NVL machine into a separate source file for maintainability
hw/arm/aspeed: Make aspeed_machine_ast2600_class_emmc_init() a common API for eMMC boot setup
hw/arm/aspeed: Split QCOM DC-SCM V1 machine into a separate source file for maintainability
hw/arm/aspeed: Split QCOM Firework machine into a separate source file for maintainability
hw/arm/aspeed: Split Fuji machine into a separate source file for maintainability
hw/arm/aspeed: Split FBY35 BMC machine into a separate source file for maintainability
hw/arm/aspeed: Split Bletchley machine into a separate source file for maintainability
hw/arm/aspeed: Move ASPEED_RAM_SIZE() macro to common header for reuse
hw/arm/aspeed: Split Palmetto machine into a separate source file for maintainability
hw/arm/aspeed: Split Supermicro X11 machine into a separate source file for maintainability
hw/arm/aspeed: Split Quanta-Q71L machine into a separate source file for maintainability
hw/arm/aspeed: Split AST2500 EVB machine into a separate source file for maintainability
hw/arm/aspeed: Split Supermicro X11SPI machine into a separate file for maintainability
hw/arm/aspeed: Split Romulus machine into a separate source file for maintainability
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
- Fabiano's patch to fix snapshot crash by rejecting some caps
- Marco's mapped-ram support on snapshot save/load
- Steve's cpr maintainers entry update on retirement
- Peter's coverity fixes
- Chenyi's tdx fix on hugetlbfs regression
- Peter's doc update on migrate resume flag
- Peter's doc update on HMP set parameter for cpr-exec-command's char** parsing
- Xiaoyao's guest-memfd fix for enabling shmem
- Arun's fix on error_fatal regression for migration errors
- Bin's fix on redundant error free for add block failures
- Markus's cleanup around MigMode sets
- Peter's two patches (out of loadvm threadify) to cleanup qio read peek process
- Thomas's vmstate-static-checker update for possible deprecation of argparse use
- Stefan's fix on windows deadlock by making unassigned MMIOs lockless
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Merge tag 'staging-pull-request' of https://gitlab.com/peterx/qemu into staging
mem + migration pull for 10.2
- Fabiano's patch to fix snapshot crash by rejecting some caps
- Marco's mapped-ram support on snapshot save/load
- Steve's cpr maintainers entry update on retirement
- Peter's coverity fixes
- Chenyi's tdx fix on hugetlbfs regression
- Peter's doc update on migrate resume flag
- Peter's doc update on HMP set parameter for cpr-exec-command's char** parsing
- Xiaoyao's guest-memfd fix for enabling shmem
- Arun's fix on error_fatal regression for migration errors
- Bin's fix on redundant error free for add block failures
- Markus's cleanup around MigMode sets
- Peter's two patches (out of loadvm threadify) to cleanup qio read peek process
- Thomas's vmstate-static-checker update for possible deprecation of argparse use
- Stefan's fix on windows deadlock by making unassigned MMIOs lockless
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# gpg: Signature made Mon 03 Nov 2025 10:06:04 PM CET
# gpg: using EDDSA key B9184DC20CC457DACF7DD1A93B5FCCCDF3ABD706
# gpg: issuer "peterx@redhat.com"
# gpg: Good signature from "Peter Xu <xzpeter@gmail.com>" [unknown]
# gpg: aka "Peter Xu <peterx@redhat.com>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: B918 4DC2 0CC4 57DA CF7D D1A9 3B5F CCCD F3AB D706
* tag 'staging-pull-request' of https://gitlab.com/peterx/qemu: (36 commits)
migration: Introduce POSTCOPY_DEVICE state
migration: Make postcopy listen thread joinable
migration: Respect exit-on-error when migration fails before resuming
migration: Refactor all incoming cleanup info migration_incoming_destroy()
migration: Introduce postcopy incoming setup and cleanup functions
migration: Move postcopy_ram_listen_thread() to postcopy-ram.c
migration: Do not try to start VM if disk activation fails
migration: Flush migration channel after sending data of CMD_PACKAGED
system/physmem: mark io_mem_unassigned lockless
scripts/vmstate-static-checker: Fix deprecation warnings with latest argparse
migration: vmsd errp handlers: return bool
migration/vmstate: stop reporting error number for new _errp APIs
tmp_emulator: improve and fix use of errp
migration: vmstate_save_state_v(): fix error path
migration: Properly wait on G_IO_IN when peeking messages
io: Add qio_channel_wait_cond() helper
migration: Put Error **errp parameter last
migration: Use bitset of MigMode instead of variable arguments
migration: Use unsigned instead of int for bit set of MigMode
migration: Don't free the reason after calling migrate_add_blocker
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Enable the i82596 network chip which is included in the LASI
multi I/O chip. Since LASI has different start addresses on
the various machines, always initialize the LASI components
by their offsets.
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Soumyajyotii Ssarkar <soumyajyotisarkar23@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
* Increase minimum gnutls to 3.7.5
* Increase minimum libgcrypt to 1.9.4
* Increase minimum nettle to 3.7.3
* Drop obsolete in-tree XTS impl
* Fix memory leak when loading certificates
* Remove/reduce duplication when loading certifcates
* Fix possible crash when certificates are unloaded
while an active TLS connection is using when in a
TLS handshake operation
* Deprecate use of dh-params.pem file
* Document how to create certificates with Post-Quantum
Cryptography compliant algorithms.
* Support loading multiple certificate identities to
allow support for Post-Quantum crypto in parallel
with traditional RSA/ECC
* Add "-run-with exit-with-parent=on" parameter
* Flush pending errors when seeing ENOBUFS with
a zero-copy send attempt
* Fix data buffer parameters in hash & IO channel APIs
to use 'void *'
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Merge tag 'next-pr-pull-request' of https://gitlab.com/berrange/qemu into staging
Merge crypto and other misc fixes / features
* Increase minimum gnutls to 3.7.5
* Increase minimum libgcrypt to 1.9.4
* Increase minimum nettle to 3.7.3
* Drop obsolete in-tree XTS impl
* Fix memory leak when loading certificates
* Remove/reduce duplication when loading certifcates
* Fix possible crash when certificates are unloaded
while an active TLS connection is using when in a
TLS handshake operation
* Deprecate use of dh-params.pem file
* Document how to create certificates with Post-Quantum
Cryptography compliant algorithms.
* Support loading multiple certificate identities to
allow support for Post-Quantum crypto in parallel
with traditional RSA/ECC
* Add "-run-with exit-with-parent=on" parameter
* Flush pending errors when seeing ENOBUFS with
a zero-copy send attempt
* Fix data buffer parameters in hash & IO channel APIs
to use 'void *'
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# gpg: Signature made Mon 03 Nov 2025 02:37:03 PM CET
# gpg: using RSA key DAF3A6FDB26B62912D0E8E3FBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>" [unknown]
# gpg: aka "Daniel P. Berrange <berrange@redhat.com>" [unknown]
# 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: DAF3 A6FD B26B 6291 2D0E 8E3F BE86 EBB4 1510 4FDF
* tag 'next-pr-pull-request' of https://gitlab.com/berrange/qemu: (32 commits)
docs: creation of x509 certs compliant with post-quantum crypto
crypto: support upto 5 parallel certificate identities
crypto: expand logic to cope with multiple certificate identities
crypto: avoid loading the identity certs twice
crypto: avoid loading the CA certs twice
crypto: deprecate use of external dh-params.pem file
crypto: make TLS credentials structs private
crypto: fix lifecycle handling of gnutls credentials objects
crypto: introduce a wrapper around gnutls credentials
crypto: introduce method for reloading TLS creds
crypto: reduce duplication in handling TLS priority strings
crypto: remove duplication loading x509 CA cert
crypto: shorten the endpoint == server check in TLS creds
crypto: move release of DH parameters into TLS creds parent
crypto: remove needless indirection via parent_obj field
crypto: use g_autofree when loading x509 credentials
crypto: move check for TLS creds 'dir' property
crypto: remove redundant access() checks before loading certs
crypto: replace stat() with access() for credential checks
crypto: add missing free of certs array
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The helper function connect_serial_hds_to_uarts() has been renamed to
aspeed_connect_serial_hds_to_uarts() and promoted to a public Aspeed
machine API.
Previously, this function was declared static within aspeed.c and only
used internally. Renaming it with the aspeed_ prefix and exporting its
declaration in aspeed.h makes the function accessible to other Aspeed
machine implementations that need to attach host serial devices to SoC
UARTs.
No functional changes.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251104031325.146374-30-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit exposes the function aspeed_machine_ast2600_class_emmc_init() as
a common API so that other AST2600-based machine implementations can reuse it
to enable the "boot-emmc" property.
Previously, this function was defined as a static helper within aspeed.c,
limiting its visibility to that file. By making it global and declaring it in
aspeed.h, other machine definition files (e.g., for specific AST2600 boards)
can now easily call this API to register eMMC boot configuration support.
No functional changes.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251104031325.146374-24-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Moving it into aspeed.h allows all Aspeed machine source files
(AST2400, AST2500, AST2600, AST2700, etc.) to reuse the same macro
definition for consistent behavior and maintainability.
No functional changes.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251104031325.146374-18-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The helper function create_pca9554() has been renamed to
aspeed_create_pca9554() and made globally available.
Previously, the function was declared static inside aspeed.c, restricting
its visibility to that file. As more Aspeed machine implementations
require PCA9554 I2C expander setup, it makes sense to rename it with the
aspeed_ prefix and export its declaration in aspeed.h for shared use.
No functional changes.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251104031325.146374-5-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The helper function create_pca9552() has been renamed to
aspeed_create_pca9552() and made non-static for reuse by other Aspeed
machine source files. A corresponding prototype is now declared in
aspeed.h.
This allows multiple Aspeed platforms to share PCA9552 I2C LED controller
initialization logic, improving code reuse and reducing duplication.
No functional changes.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251104031325.146374-4-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The function aspeed_machine_class_init_cpus_defaults() is now made
globally visible so that it can be used by other Aspeed machine C files.
Previously, this function was declared as static, restricting its
visibility to aspeed.c. Since future machine split files will also
need to call this helper to initialize default CPU settings, its
declaration has been moved to the common header aspeed.h and the
static keyword has been removed.
No functional changes.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251104031325.146374-3-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Aspeed machines will be moved into split C files for better
modularization and future maintenance.
To allow all machine implementations to reuse the same
AspeedMachineState structure, the struct definition is moved
from aspeed.c to the shared header aspeed.h.
This change centralizes the common state structure used across
all Aspeed machine models, reduces redundancy, and simplifies
future refactoring work for new machines.
No functional changes.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251104031325.146374-2-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
No code actually depend on specific errno values returned by
vmstate_load_state. The only use of it is to check for success,
and sometimes inject numeric error values into error messages
in migration code. The latter is not a stopper for gradual
conversion to "errp + bool return value" APIs.
Big analysis of vmstate_load_state() callers, showing that
specific errno values are not actually used, is done by Peter
here:
https://lore.kernel.org/qemu-devel/aQDdRn8t0B8oE3gf@x1.local/
Converting of vmstate_load_state() itself will follow in
another series.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Link: https://lore.kernel.org/r/20251028170926.77219-2-vsementsov@yandex-team.ru
Signed-off-by: Peter Xu <peterx@redhat.com>
Add the helper to wait for QIO channel's IO availability in any
context (coroutine, or non-coroutine). Use it tree-wide for three
occurences.
Cc: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Link: https://lore.kernel.org/r/20251022192612.2737648-2-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
migrate_add_blocker_modes() and migration_add_notifier_modes use
variable arguments for a set of migration modes. The variable
arguments get collected into a bitset for processsing. Take a bitset
argument instead, it's simpler.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20251027064503.1074255-3-armbru@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Per reported and analyzed by Peter:
https://lore.kernel.org/r/CAFEAcA_mUQ2NeoguR5efrhw7XYGofnriWEA=+Dg+Ocvyam1wAw@mail.gmail.com
mfd leak is a false positive, try to use a coverity annotation (which I
didn't find manual myself, but still give it a shot).
Fix the other one by capture error if setenv() failed. When at it, pass
the error to the top (cpr_state_save()). Along the way, changing all
retval to bool when errp is around.
Resolves: Coverity CID 1641391
Resolves: Coverity CID 1641392
Fixes: efc6587313 ("migration: cpr-exec save and load")
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20251021220407.2662288-3-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
The last use of VMSTATE_UINTTL_EQUAL() was removed in commit
16a2497bd4 ("target-ppc: Fix CPU migration from qemu-2.6 <->
later versions"), 9 years ago; remove it.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Link: https://lore.kernel.org/r/20251016160313.25751-1-philmd@linaro.org
Signed-off-by: Peter Xu <peterx@redhat.com>
Otherwise we run the risk of name clashing, for example with
stm32l4x5_usart-test.c should we shuffle the includes.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20251030173302.1379174-1-alex.bennee@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
cpu_memory_rw_debug() dispatches to CPUClass::memory_rw_debug(),
move its declaration closer to the CPU API. Document.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20251001150529.14122-22-philmd@linaro.org>
QEMU has a per-thread "bql_locked" variable stored in TLS section, showing
whether the current thread is holding the BQL lock.
It's a pretty handy variable. Function-wise, QEMU have codes trying to
conditionally take bql, relying on the var reflecting the locking status
(e.g. BQL_LOCK_GUARD), or in a GDB debugging session, we could also look at
the variable (in reality, co_tls_bql_locked), to see which thread is
currently holding the bql.
When using that as a debugging facility, sometimes we can observe multiple
threads holding bql at the same time. It's because QEMU's condvar APIs
bypassed the bql_*() API, hence they do not update bql_locked even if they
have released the mutex while waiting.
It can cause confusion if one does "thread apply all p co_tls_bql_locked"
and see multiple threads reporting true.
Fix this by moving the bql status updates into the mutex debug hooks. Now
the variable should always reflect the reality.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250904223158.1276992-1-peterx@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
The default (required) identity is stored in server-cert.pem /
client-cert.pem and server-key.pem / client-key.pem.
The 4 extra (optional) identities are stored in server-cert-$N.pem /
client-cert-$N.pem and server-key-$N.pem / client-key-$N.pem. The
numbering starts at 0 and the first missing cert/key pair will
terminate the loading process.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This prevents direct access of the class members by the VNC
display code.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The logic for setting the TLS priority string on a session object has a
significant amount of logic duplication across the different credential
types. By recording the extra priority string suffix against the
credential class, we can introduce a common method for building the
priority string. The TLS session can now set the priority string without
caring about the credential type.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
nettle included XTS in 3.4.1, so with the new min version we
no longer require the in-tree XTS cipher mode impl.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The kernel allocates extra metadata SKBs in case of a zerocopy send,
eventually used for zerocopy's notification mechanism. This metadata
memory is accounted for in the OPTMEM limit. The kernel queues
completion notifications on the socket error queue and this error queue
is freed when userspace reads it.
Usually, in the case of in-order processing, the kernel will batch the
notifications and merge the metadata into a single SKB and free the
rest. As a result, it never exceeds the OPTMEM limit. However, if there
is any out-of-order processing or intermittent zerocopy failures, this
error chain can grow significantly, exhausting the OPTMEM limit. As a
result, all new sendmsg requests fail to allocate any new SKB, leading
to an ENOBUF error. Depending on the amount of data queued before the
flush (i.e., large live migration iterations), even large OPTMEM limits
are prone to failure.
To work around this, if we encounter an ENOBUF error with a zerocopy
sendmsg, flush the error queue and retry once more.
Co-authored-by: Manish Mishra <manish.mishra@nutanix.com>
Signed-off-by: Tejus GK <tejus.gk@nutanix.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
[DB: change TRUE/FALSE to true/false for 'bool' type;
add more #ifdef QEMU_MSG_ZEROCOPY blocks]
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Add a 'blocking' boolean field to QIOChannelSocket to track whether the
underlying socket is in blocking or non-blocking mode.
Signed-off-by: Tejus GK <tejus.gk@nutanix.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
I/O channel read/write functions can operate on any area of
memory, regardless of the content their represent. Do not
restrict to array of char, use the void* type, which is also
the type of the underlying iovec::iov_base field.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
[DB: also adapt test-crypto-tlssession.c func signatures]
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Cryptographic hash function can operate on any area of memory,
regardless of the content their represent. Do not restrict to
array of char, use the void* type, which is also the type of
the underlying iovec::iov_base field.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Libguestfs wants to use qemu to run a captive appliance. When the
program linked to libguestfs exits, we want qemu to be cleaned up.
Libguestfs goes to great lengths to do this at the moment: it either
forks a separate process to ensure clean-up is done, or it asks
libvirt to clean up the qemu process. However this is complicated and
not totally reliable.
On Linux, FreeBSD and macOS, there are mechanisms to ensure a signal
or message is delivered to a process when its parent process goes
away. The qemu test suite even uses this mechanism on Linux (see
PR_SET_PDEATHSIG in tests/qtest/libqtest.c).
In nbdkit we have long had the concept of running nbdkit captively,
and we have the nbdkit --exit-with-parent flag to help
(https://libguestfs.org/nbdkit-captive.1.html#EXIT-WITH-PARENT)
This commit adds the same mechanism. The syntax is:
qemu -run-with exit-with-parent=on [...]
This is not a feature that most typical users of qemu (for running
general purpose, long-lived VMs) should use, so it defaults to off.
The exit-with-parent.[ch] files are copied from nbdkit, where they
have a 3-clause BSD license which is compatible with qemu:
https://gitlab.com/nbdkit/nbdkit/-/tree/master/common/utils?ref_type=heads
Thanks: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Add IgvmNativeVpContextX64 struct holding the register state (see igvm
spec), and the qigvm_x86_load_context() function to load the register
state.
Wire up using two new functions: qigvm_x86_set_vp_context() is called
from igvm file handling code and stores the boot processor context.
qigvm_x86_bsp_reset() is called from i386 target cpu reset code and
loads the context into the cpu registers.
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Luigi Leonardi <leonardi@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-ID: <20251029105555.2492276-5-kraxel@redhat.com>
Add and wire up qigvm_x86_get_mem_map_entry function which converts the
e820 table into an igvm memory map parameter. This makes igvm files for
the native (non-confidential) platform with memory map parameter work.
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Luigi Leonardi <leonardi@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-ID: <20251029105555.2492276-4-kraxel@redhat.com>
Prepare for arch-specific igvm code being added to the code base.
Reviewed-by: Ani Sinha <anisinha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Luigi Leonardi <leonardi@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-ID: <20251029105555.2492276-2-kraxel@redhat.com>
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Merge tag 'audio-test-pull-request' of https://gitlab.com/marcandre.lureau/qemu into staging
Audio clean-ups
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# gpg: Signature made Fri 31 Oct 2025 07:43:56 AM CET
# gpg: using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg: issuer "marcandre.lureau@redhat.com"
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [unknown]
# gpg: aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276 F62D DAE8 E109 7596 9CE5
* tag 'audio-test-pull-request' of https://gitlab.com/marcandre.lureau/qemu: (36 commits)
audio: deprecate HMP audio commands
audio: Rename @endianness argument as @big_endian for clarity
audio: Remove pointless local variables
audio: drop needless audio_driver "descr" field
audio: move capture API to own header
audio: cleanup, use bool for booleans
audio: remove dependency on spice header
audio: move audio.h under include/qemu/
audio/dbus: use a helper function to set the backend dbus server
audio: remove QEMUSoundCard
audio: rename AudioState -> AudioBackend
audio: move internal APIs to audio_int.h
audio/replay: fix type punning
audio: introduce AUD_set_volume_{in,out}_lr()
audio: remove AUDIO_HOST_ENDIANNESS
audio: remove some needless headers
audio: initialize card_head during object init
audio: register and unregister vmstate with AudioState
audio: keep vmstate handle with AudioState
audio: drop needless error message
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Do not expose ARM specific fields to X86 implementation,
allowing to use the proper 'hv_vcpu_exit_t' type.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Call hv_vcpu_destroy() to destroy our vCPU context.
As hv_vcpu_destroy() must be called by the owning thread,
document hvf_arch_vcpu_destroy() also does.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Mads Ynddal <mads@ynddal.dk>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Since hvf_arch_update_guest_debug() calls hvf_arch_set_traps()
and hvf_arch_update_guest_debug(), which must run on a vCPU, it
also must. Mention it.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mads Ynddal <mads@ynddal.dk>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
