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>
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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>
hvf_arch_init_vcpu(), along with hvf_put_guest_debug_registers()
and hvf_put_gdbstub_debug_registers(), calls hv_vcpu_set_sys_reg(),
which must run on a vCPU. Mention they also must.
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>
hvf_put_registers() and hvf_get_registers() are implemented per
target, rename them using the 'hvf_arch_' prefix following the
per target pattern.
Since they call hv_vcpu_set_reg() / hv_vcpu_get_reg(), mention
they must be called on the vCPU.
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>
hvf_vcpu_exec() is implemented per target, rename it as
hvf_arch_vcpu_exec(), following the per target pattern.
Since it calls hv_vcpu_run(), mention it must be called
on the vCPU.
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>
The VirtMachineClass::kvm_no_adjvtime field was only used by the
virt-4.2 machine, which got removed. Remove it as now unused, but
keep the ARMCPU homonym property.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20251020094022.68768-5-philmd@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The VirtMachineClass::no_ged field was only used by virt-4.1
machine, which got removed. Remove it as now unused.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20251020094022.68768-3-philmd@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Merge tag 'pull-loongarch-20251030' of https://github.com/bibo-mao/qemu into staging
loongarch queue
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# =zfDK
# -----END PGP SIGNATURE-----
# gpg: Signature made Thu 30 Oct 2025 03:38:05 AM CET
# gpg: using EDDSA key 0D8642A3A2659F80B0B3D1A41F7B0C1251ACE7D1
# gpg: Good signature from "bibo mao <maobibo@loongson.cn>" [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: 7044 3A00 19C0 E97A 31C7 13C4 8E86 8FB7 A176 9D4C
# Subkey fingerprint: 0D86 42A3 A265 9F80 B0B3 D1A4 1F7B 0C12 51AC E7D1
* tag 'pull-loongarch-20251030' of https://github.com/bibo-mao/qemu:
target/loongarch: Add PTW feature support in KVM mode
linux-headers: Update to Linux v6.18-rc3
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
For Arm, we need 3 cases: (1) the alignment required when accessing
Normal memory, (2) the alignment required when accessing Device memory,
and (3) the atomicity of the access.
When we added TLB_CHECK_ALIGNED, we assumed that cases 2 and 3 were
identical, and thus used memop_atomicity_bits for TLB_CHECK_ALIGNED.
This is incorrect for multiple reasons, including that the atomicity
of the access is adjusted depending on whether or not we are executing
within a serial context.
For Arm, what is true is that there is an underlying alignment
requirement of the access, and for that access Normal memory
will support unalignement.
Introduce MO_ALIGN_TLB_ONLY to indicate that the alignment
specified in MO_AMASK only applies when the TLB entry has
TLB_CHECK_ALIGNED set; otherwise no alignment required.
Introduce memop_tlb_alignment_bits with an additional bool
argument that specifies whether TLB_CHECK_ALIGNED is set.
All other usage of memop_alignment_bits assumes it is not.
Remove memop_atomicity_bits as unused; it didn't properly
support MO_ATOM_SUBWORD anyway.
Update target/arm finalize_memop_atom to set MO_ALIGN_TLB_ONLY
when strict alignment isn't otherwise required.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3171
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
- Make hw/arm/ common by adding a QOM type to machines to
tag in which binary (32 or 64-bit) they can be used.
Convert the Virt and SBSA-Ref machines.
- Build Xen files once
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Merge tag 'single-binary-20251030' of https://github.com/philmd/qemu into staging
Various patches related to single binary work:
- Make hw/arm/ common by adding a QOM type to machines to
tag in which binary (32 or 64-bit) they can be used.
Convert the Virt and SBSA-Ref machines.
- Build Xen files once
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# gpg: Signature made Thu 30 Oct 2025 02:50:38 PM 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 'single-binary-20251030' of https://github.com/philmd/qemu: (23 commits)
hw/riscv: Replace target_ulong uses
hw/xen: Build only once
hw/xen: Replace target_ulong by agnostic target_long_bits()
hw/xen: Use BITS_PER_BYTE & MAKE_64BIT_MASK() in req_size_bits()
hw/arm/meson: Move Xen files to arm_common_ss[]
hw/arm/virt: Build only once
hw/arm/virt-acpi-build: Build only once
hw/arm/virt-acpi-build: Include missing 'cpu.h' header
hw/arm/sbsa-ref: Build only once
hw/arm/sbsa-ref: Include missing 'cpu.h' header
hw/arm/virt: Get default CPU type at runtime
hw/arm/virt: Replace TARGET_AARCH64 -> target_aarch64()
qemu/target_info: Add target_base_arm() helper
qemu/target_info: Add target_aarch64() helper
qemu/target_info: Add target_arm() helper
hw/arm/virt: Check accelerator availability at runtime
hw/arm/virt: Register valid CPU types dynamically
config/target: Implement per-binary TargetInfo structure (ARM, AARCH64)
meson: Prepare to accept per-binary TargetInfo structure implementation
hw/arm: Filter machine types for qemu-system-arm/aarch64 binaries
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
For modularity/clarity reasons, move the capture API in a specific
header.
The current audio/ header license is MIT.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Use slightly better types for the job.
Fix some checkpatch issues.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
There is no clear need for this extra intermediary structure between
the audio backend and its user.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Add a helper to check whether the target base architecture
is ARM (either 32-bit or 64-bit).
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20251021210144.58108-3-philmd@linaro.org>
Add a helper to distinct whether the binary is targetting
Aarch64 or not.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20251021210144.58108-2-philmd@linaro.org>
Add a helper to distinct whether the binary is targetting
ARM (32-bit only) or not.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20251021210144.58108-1-philmd@linaro.org>
That's no longer necessary, the code is bus-agnostic.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
All the functions are about "-audio model=" handling, a simpler
way to setup audio. Rename functions/variables to reflect this better.
audio_register_model_with_cb() dropped "pci" from the name, since it
will be generalized next.
deprecated_register_soundhw() was actually not a function to be
removed since it's used for "-audio model=" aliasing.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
- Expose block limits in monitor and qemu-img info
- Resize: Refresh filter node size when its child was resized
- Support configuring stats-intervals in -device (instead of only -drive)
- luks: Fix QMP x-blockdev-amend crash and image creation with detached-header
- iotests: Several test case fixes
- Code cleanups
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Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging
Block layer patches
- Expose block limits in monitor and qemu-img info
- Resize: Refresh filter node size when its child was resized
- Support configuring stats-intervals in -device (instead of only -drive)
- luks: Fix QMP x-blockdev-amend crash and image creation with detached-header
- iotests: Several test case fixes
- Code cleanups
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# gpg: Signature made Wed 29 Oct 2025 01:02:10 PM CET
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@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: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* tag 'for-upstream' of https://repo.or.cz/qemu/kevin:
qemu-img info: Add cache mode option
qemu-img info: Optionally show block limits
block: Expose block limits for images in QMP
block: Improve comments in BlockLimits
iotests: add test for resizing a 'file' node below a 'raw' node
iotests: add test for resizing a node below filters
block: implement 'resize' callback for child_of_bds class
block: make bdrv_co_parent_cb_resize() a proper IO API function
include/block/block_int-common: document when resize callback is used
MAINTAINERS: Mark VHDX block driver as "Odd Fixes"
block: enable stats-intervals for storage devices
iotests: Adjust fuse-allow-other expected output
iotests: Adjust nbd expected outputs to match current behavior
block/curl.c: Fix CURLOPT_VERBOSE parameter type
block/monitor: Use hmp_handle_error to report error
block: fix luks 'amend' when run in coroutine
block: remove 'detached-header' option from opts after use
tests/qemu-iotests: Mark the 'inactive-node-nbd' as unsupported with -luks
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This patch extends the existing support we have for NVMe with only DoE
to also add support to SPDM over the NVMe Security Send/Recv commands.
With the new definition of the `spdm-trans` argument, users can specify
`spdm_trans=nvme` or `spdm_trans=doe`. This allows us to select the SPDM
transport respectively. SPDM over the NVMe Security Send/Recv commands
are defined in the DMTF DSP0286.
Signed-off-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
[k.jensen: fix declaration in case statement; fix quotes in docs]
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
SPDM maybe used over different transports. This patch specifies the
trasnport types as an enum with a qdev property definition such that
a user input transport type (string) can be mapped directly into the
respective SPDM transportenum for internal use.
Signed-off-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Adds the NVMe Admin Security Send/Receive command support with support
for DMTFs SPDM. The transport binding for SPDM is defined in the
DMTF DSP0286.
Signed-off-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This header contains the transport encoding for an SPDM message that
uses the SPDM over Storage transport as defined by the DMTF DSP0286.
Note that in the StorageSpdmTransportHeader structure, security_protocol
field is defined in the SCSI Primary Commands 5 (SPC-5) specification.
The NVMe specification also refers to the SPC-5 for this definition.
The security_protocol_specific field is defined in DSP0286 and is
referred to as SP Specific for NVMe and ATA.
Signed-off-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This is to support uni-directional transports such as SPDM over Storage.
As specified by the DMTF DSP0286.
Also update spdm_socket_rsp() to use the new send()/receive() functions. For
the case of spdm_socket_receive(), this allows us to do error checking
in one place with the addition of spdm_socket_command_valid().
Signed-off-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Update headers to retrieve the latest KVM caps for LoongArch. It is added
to the tree by running `update-linux-headers.sh` on linux v6.18-rc3.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
This helper is used next by -audio code.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
A machine defined with the DEFINE_MACHINE_ARM() macro will
be available in both qemu-system-arm and qemu-system-aarch64
binaries.
One defined with DEFINE_MACHINE_AARCH64() will only be
available in the qemu-system-aarch64 binary.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20251021205741.57109-4-philmd@linaro.org>
Define the TYPE_TARGET_ARM_MACHINE and TYPE_TARGET_AARCH64_MACHINE
QOM interface names to allow machines to implement them.
Register these interfaces in common code in target_info-qom.c used
by all binaries because QOM interfaces must be registered before
being checked (see next commit with the 'none' machine).
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20251021205741.57109-2-philmd@linaro.org>
The plugin API allows registration of callbacks for a variety of VCPU
related events, such as VCPU reset, idle and resume. In addition, we
recently introduced API for registering callbacks for discontinuity
events, specifically for interrupts, exceptions and host calls.
This change introduces the corresponding hooks called from target
specific code inside qemu.
Signed-off-by: Julian Ganz <neither@nut.email>
Message-ID: <20251027110344.2289945-10-alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
The plugin API allows registration of callbacks for a variety of VCPU
related events, such as VCPU reset, idle and resume. In addition to
those events, we recently defined discontinuity events, which include
traps.
This change introduces a function to register callbacks for these
events. We define one distinct plugin event type for each type of
discontinuity, granting fine control to plugins in term of which events
they receive.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Julian Ganz <neither@nut.email>
Message-ID: <20251027110344.2289945-9-alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
The plugin API allows registration of callbacks for a variety of VCPU
related events, such as VCPU reset, idle and resume. However, traps of
any kind, i.e. interrupts or exceptions, were previously not covered.
These kinds of events are arguably quite significant and usually go hand
in hand with a PC discontinuity. On most platforms, the discontinuity
also includes a transition from some "mode" to another. Thus, plugins
for the analysis of (virtualized) embedded systems may benefit from or
even require the possiblity to perform work on the occurance of an
interrupt or exception.
This change introduces the concept of such a discontinuity event in the
form of an enumeration. Currently only traps are covered. Specifically
we (loosely) define interrupts, exceptions and host calls across all
platforms. In addition, this change introduces a type to use for
callback functions related to such events. Since possible modes and the
enumeration of interupts and exceptions vary greatly between different
architectures, the callback type only receives the VCPU id, the type of
event as well as the old and new PC.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Julian Ganz <neither@nut.email>
Message-ID: <20251027110344.2289945-8-alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Add a new --limits option to 'qemu-img info' that displays the block
limits for the image and all of its children, making the information
more accessible for human users than in QMP. This option is not enabled
by default because it can be a lot of output that isn't usually relevant
if you're not specifically trying to diagnose some I/O problem.
This makes the same information automatically also available in HMP
'info block -v'.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Message-ID: <20251024123041.51254-4-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Patches to expose the limits in QAPI have made clear that the existing
documentation of BlockLimits could be improved: The meaning of
min_mem_alignment and opt_mem_alignment could be clearer, and talking
about better alignment values isn't helpful when we only detect these
values and never choose them.
Make the changes in the BlockLimits documentation now, so that the
patches exposing the fields in QAPI can use descriptions consistent with
it.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20251024123041.51254-2-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
If a filtered child is resized, the size of the parent node is now
also refreshed (recursively for chains of filtered children).
For filter block drivers that do not implement .bdrv_co_getlength(),
this commit does not change the current behavior, because
bdrv_co_refresh_total_sectors() will used the current size via the
passed-in hint. This is the case for block drivers for (some) block
jobs, as well as copy-before-write.
Block jobs already set up a blocker preventing a QMP block_resize
operation while the job is running. That does not directly cover an
associated 'file' node of a 'raw' node, but resizing such a 'file'
node is already prevented too (backup, commit, mirror and stream were
checked).
The other case is copy-before-write. This commit does not change the
fact that the copy-before-write node still has the same size after its
filtered child is resized.
Block drivers that do implement .bdrv_co_getlength() and where
.is_filter is true, already returned the length of the file child, so
there is no change before and after this commit, with two exceptions:
1. preallocate can return an early data_end and otherwise queries the
file child, but that special casing is not changed.
2. blkverify returns the length of the test file. This commit does not
affect that behavior.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Message-ID: <20250917115509.401015-4-f.ebner@proxmox.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
In preparation for calling it via the bdrv_child_cb_resize() callback
that will be added by the next commit. Rename it to include the "_co_"
part while at it.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Message-ID: <20250917115509.401015-3-f.ebner@proxmox.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The 'resize' callback is only called by bdrv_parent_cb_resize() which
is only called by bdrv_co_write_req_finish() to notify the parent(s)
that the child was resized.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Message-ID: <20250917115509.401015-2-f.ebner@proxmox.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This patch allows stats-intervals to be used for storage
devices with the -device option. It accepts a list of interval
lengths in JSON format.
It configures and collects the stats in the BlockBackend layer
through the storage device that consumes the BlockBackend.
Signed-off-by: Chandan Somani <csomani@redhat.com>
Message-ID: <20251003220039.1336663-1-csomani@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* esp: fix esp_cdb_ready() FIFO wraparound limit calculation
* isapc: warn rather than reject modern x86 CPU models
* mshv: fix Coverity issues
* qdev: Change PropertyInfo method print() to return malloc'ed string
* qobject: make refcount atomic
* rcu: make synchronize_rcu() more efficient
* rust: cleanup glib_sys bindings
* rust: Convert bit value to u8 within #[property]
* rust: only leave leaf crates as workspace members
* scripts: clean up meson-buildoptions.py
* scsi: make refcount atomic
* target/i386: Init SMM cpu address space for hotplugged CPUs
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging
* char: rename CharBackend->CharFrontend
* esp: fix esp_cdb_ready() FIFO wraparound limit calculation
* isapc: warn rather than reject modern x86 CPU models
* mshv: fix Coverity issues
* qdev: Change PropertyInfo method print() to return malloc'ed string
* qobject: make refcount atomic
* rcu: make synchronize_rcu() more efficient
* rust: cleanup glib_sys bindings
* rust: Convert bit value to u8 within #[property]
* rust: only leave leaf crates as workspace members
* scripts: clean up meson-buildoptions.py
* scsi: make refcount atomic
* target/i386: Init SMM cpu address space for hotplugged CPUs
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# gpg: Signature made Wed 29 Oct 2025 10:24:21 AM CET
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [unknown]
# gpg: aka "Paolo Bonzini <pbonzini@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: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
rust: migration: allow passing ParentField<> to vmstate_of!
target/i386: clear CPU_INTERRUPT_SIPI for all accelerators
docs/about/deprecated.rst: document isapc deprecation for modern x86 CPU models
hw/i386/isapc.c: warn rather than reject modern x86 CPU models
qdev: Change PropertyInfo method print() to return malloc'ed string
scsi: make SCSIRequest refcount atomic
rust/qemu-macros: Convert bit value to u8 within #[property]
qtest/am53c974-test: add additional test for cmdfifo overflow
esp.c: fix esp_cdb_ready() FIFO wraparound limit calculation
accel/mshv: use return value of handle_pio_str_read
accel/mshv: initialize thread name
char: rename CharBackend->CharFrontend
qobject: make refcount atomic
rust: only leave leaf crates as workspace members
rust: remove useless glib_sys bindings
rcu: Unify force quiescent state
i386/kvm/cpu: Init SMM cpu address space for hotplugged CPUs
scripts: clean up meson-buildoptions.py
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
