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

* futex: support Windows
* qemu-thread: Avoid futex abstraction for non-Linux
* migration, hw/display/apple-gfx: replace Qemu

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

* futex: support Windows
* qemu-thread: Avoid futex abstraction for non-Linux
* migration, hw/display/apple-gfx: replace QemuSemaphore with QemuEvent
* rust: bindings for Error
* hpet, rust/hpet: return errors from realize if properties are incorrect
* rust/hpet: Drop BqlCell wrapper for num_timers
* target/i386: Emulate ftz and denormal flag bits correctly
* i386/kvm: Prefault memory on page state change

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# gpg: Signature made Fri 06 Jun 2025 08:33:12 EDT
# 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]
# 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: (31 commits)
tests/tcg/x86_64/fma: add test for exact-denormal output
target/i386: Wire up MXCSR.DE and FPUS.DE correctly
target/i386: Use correct type for get_float_exception_flags() values
target/i386: Detect flush-to-zero after rounding
hw/display/apple-gfx: Replace QemuSemaphore with QemuEvent
migration/postcopy: Replace QemuSemaphore with QemuEvent
migration/colo: Replace QemuSemaphore with QemuEvent
migration: Replace QemuSemaphore with QemuEvent
qemu-thread: Document QemuEvent
qemu-thread: Use futex if available for QemuLockCnt
qemu-thread: Use futex for QemuEvent on Windows
qemu-thread: Avoid futex abstraction for non-Linux
qemu-thread: Replace __linux__ with CONFIG_LINUX
futex: Support Windows
futex: Check value after qemu_futex_wait()
i386/kvm: Prefault memory on page state change
rust: make TryFrom macro more resilient
docs: update Rust module status
rust/hpet: Drop BqlCell wrapper for num_timers
rust/hpet: return errors from realize if properties are incorrect
...

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

show more ...

rust: qemu-api: add bindings to Error

Provide an implementation of std::error::Error that bridges the Rust
anyhow::Error and std::panic::Location types with QEMU's Error*.

It also has several utili

rust: qemu-api: add bindings to Error

Provide an implementation of std::error::Error that bridges the Rust
anyhow::Error and std::panic::Location types with QEMU's Error*.

It also has several utility methods, analogous to error_propagate(),
that convert a Result into a return value + Error** pair. One important
difference is that these propagation methods *panic* if *errp is NULL,
unlike error_propagate() which eats subsequent errors[1]. The reason
for this is that in C you have an error_set*() call at the site where
the error is created, and calls to error_propagate() are relatively rare.

In Rust instead, even though these functions do "propagate" a
qemu_api::Error into a C Error**, there is no error_setg() anywhere that
could check for non-NULL errp and call abort(). error_propagate()'s
behavior of ignoring subsequent errors is generally considered weird,
and there would be a bigger risk of triggering it from Rust code.

[1] This is actually a violation of the preconditions of error_propagate(),
so it should not happen. But you never know...

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

subprojects: add the foreign crate

This is a cleaned up and separated version of the patches at
https://lore.kernel.org/all/20240701145853.1394967-4-pbonzini@redhat.com/
https://lore.kernel.org/all/

subprojects: add the foreign crate

This is a cleaned up and separated version of the patches at
https://lore.kernel.org/all/20240701145853.1394967-4-pbonzini@redhat.com/
https://lore.kernel.org/all/20240701145853.1394967-5-pbonzini@redhat.com/

Its first user will be the Error bindings; for example a QEMU Error ** can be
converted to a Rust Option using

unsafe { Option::<Error>::from_foreign(c_error) }

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

subprojects: add the anyhow crate

This is a standard replacement for Box<dyn Error> which is more efficient (it only
occcupies one word) and provides a backtrace of the error. This could be plumbed

subprojects: add the anyhow crate

This is a standard replacement for Box<dyn Error> which is more efficient (it only
occcupies one word) and provides a backtrace of the error. This could be plumbed
into &error_abort in the future.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

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

* rust: use native Meson support for clippy and rustdoc
* rust: add "bits", a custom bitflags implementation
* target/i386: R

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

* rust: use native Meson support for clippy and rustdoc
* rust: add "bits", a custom bitflags implementation
* target/i386: Remove FRED dependency on WRMSRNS
* target/i386: Add the immediate form MSR access instruction support
* TDX fixes

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# gpg: Signature made Tue 03 Jun 2025 16:44:43 EDT
# 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]
# 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: qemu-api-macros: add from_bits and into_bits to #[derive(TryInto)]
rust: pl011: use the bits macro
rust: add "bits", a custom bitflags implementation
i386/tdvf: Fix build on 32-bit host
i386/tdx: Fix build on 32-bit host
meson: use config_base_arch for target libraries
target/i386: Add the immediate form MSR access instruction support
target/i386: Add a new CPU feature word for CPUID.7.1.ECX
target/i386: Remove FRED dependency on WRMSRNS
rust: use native Meson support for clippy and rustdoc
rust: cell: remove support for running doctests with "cargo test --doc"
rust: add qemu-api doctests to "meson test"
build, dockerfiles: add support for detecting rustdoc
rust: use "objects" for Rust executables as well
meson: update to version 1.8.1
rust: bindings: allow ptr_offset_with_cast

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

show more ...

rust: add qemu-api doctests to "meson test"

Doctests are weird. They are essentially integration tests, but they're
"ran" by executing rustdoc --test, which takes a compiler-ish
command line. This

rust: add qemu-api doctests to "meson test"

Doctests are weird. They are essentially integration tests, but they're
"ran" by executing rustdoc --test, which takes a compiler-ish
command line. This is supported by Meson 1.8.0.

Because they run the linker and need all the .o files, run them in the
build jobs rather than the test jobs.

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

show more ...

rust: use "objects" for Rust executables as well

libqemuutil is not meant be linked as a whole; if modules are enabled, doing
so results in undefined symbols (corresponding to QMP commands) in
rust/

rust: use "objects" for Rust executables as well

libqemuutil is not meant be linked as a whole; if modules are enabled, doing
so results in undefined symbols (corresponding to QMP commands) in
rust/qemu-api/rust-qemu-api-integration.

Support for "objects" in Rust executables is available in Meson 1.8.0; use it
to switching to the same dependencies that C targets use: link_with for
libqemuutil, and objects for everything else.

Reported-by: Bernhard Beschow <shentey@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

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

* target/i386/kvm: Intel TDX support
* target/i386/emulate: more lflags cleanups
* meson: remove need for explicit listing of

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

* target/i386/kvm: Intel TDX support
* target/i386/emulate: more lflags cleanups
* meson: remove need for explicit listing of dependencies in hw_common_arch and
target_common_arch
* rust: small fixes
* hpet: Reorganize register decoding to be more similar to Rust code
* target/i386: fixes for AMD models
* target/i386: new EPYC-Turin CPU model

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# gpg: Signature made Thu 29 May 2025 03:05:00 EDT
# 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]
# 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: (77 commits)
target/i386/tcg/helper-tcg: fix file references in comments
target/i386: Add support for EPYC-Turin model
target/i386: Update EPYC-Genoa for Cache property, perfmon-v2, RAS and SVM feature bits
target/i386: Add couple of feature bits in CPUID_Fn80000021_EAX
target/i386: Update EPYC-Milan CPU model for Cache property, RAS, SVM feature bits
target/i386: Update EPYC-Rome CPU model for Cache property, RAS, SVM feature bits
target/i386: Update EPYC CPU model for Cache property, RAS, SVM feature bits
rust: make declaration of dependent crates more consistent
docs: Add TDX documentation
i386/tdx: Validate phys_bits against host value
i386/tdx: Make invtsc default on
i386/tdx: Don't treat SYSCALL as unavailable
i386/tdx: Fetch and validate CPUID of TD guest
target/i386: Print CPUID subleaf info for unsupported feature
i386: Remove unused parameter "uint32_t bit" in feature_word_description()
i386/cgs: Introduce x86_confidential_guest_check_features()
i386/tdx: Define supported KVM features for TDX
i386/tdx: Add XFD to supported bit of TDX
i386/tdx: Add supported CPUID bits relates to XFAM
i386/tdx: Add supported CPUID bits related to TD Attributes
...

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

show more ...

rust: make declaration of dependent crates more consistent

Crates like "bilge" and "libc" can be shared by more than one directory,
so declare them directly in rust/meson.build. While at it, make t

rust: make declaration of dependent crates more consistent

Crates like "bilge" and "libc" can be shared by more than one directory,
so declare them directly in rust/meson.build. While at it, make their
variable names end with "_rs" and always add a subproject() statement
(as that pinpoints the error better if the subproject is missing and
cannot be downloaded).

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

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

* ci: enable RISC-V cross jobs
* rust: bump minimum supported version to 1.77
* rust: enable uninlined_format_args lint
* ini

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

* ci: enable RISC-V cross jobs
* rust: bump minimum supported version to 1.77
* rust: enable uninlined_format_args lint
* initial Emscripten support
* small fixes

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# gpg: Signature made Tue 06 May 2025 10:03:27 EDT
# 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]
# 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: (30 commits)
gitlab: Enable CI for wasm build
tests: Add Dockerfile containing dependencies for Emscripten build
meson: Add wasm build in build scripts
util: Add coroutine backend for emscripten
util: exclude mmap-alloc.c from compilation target on Emscripten
Disable options unsupported on Emscripten
include/qemu/osdep.h: Add Emscripten-specific OS dependencies
block: Fix type conflict of the copy_file_range stub
block: Add including of ioctl header for Emscripten build
util/cacheflush.c: Update cache flushing mechanism for Emscripten
include/glib-compat.h: Poison g_list_sort and g_slist_sort
target/s390x: Fix type conflict of GLib function pointers
target/ppc: Fix type conflict of GLib function pointers
target/i386/cpu.c: Fix type conflict of GLib function pointers
target/arm/helper.c: Fix type conflict of GLib function pointers
docs: build-system: fix typo
ci: run RISC-V cross jobs by default
rust: clippy: enable uninlined_format_args lint
target/i386/emulate: fix target_ulong format strings
docs: rust: update for newer minimum supported version
...

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

show more ...

rust: replace c_str! with c"" literals

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

rust: remove offset_of replacement

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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

* exec/cpu-all: remove BSWAP_NEEDED
* pl011: pad C PL011State struct to same size as Rust struct
* rust: hpet: fix type of "t

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

* exec/cpu-all: remove BSWAP_NEEDED
* pl011: pad C PL011State struct to same size as Rust struct
* rust: hpet: fix type of "timers" property
* rust: hpet: fix functional tests (and really everything that uses it)
* rust: Kconfig: Factor out whether devices are Rust or C
* rust: vmstate: Fixes and tests

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# gpg: Signature made Fri 21 Mar 2025 14:34:51 EDT
# 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]
# 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: (24 commits)
rust: hpet: fix decoding of timer registers
rust/vmstate: Include complete crate path of VMStateFlags in vmstate_clock
rust/vmstate: Add unit test for vmstate_validate
rust/vmstate: Add unit test for pointer case
rust/vmstate: Add unit test for vmstate_{of|struct} macro
rust/vmstate: Add unit test for vmstate_of macro
rust/vmstate: Support vmstate_validate
rust/vmstate: Re-implement VMState trait for timer binding
rust/vmstate: Relax array check when build varray in vmstate_struct
rust/vmstate: Fix unnecessary VMState bound of with_varray_flag()
rust/vmstate: Fix "cannot infer type" error in vmstate_struct
rust/vmstate: Fix type check for varray in vmstate_struct
rust/vmstate: Fix size field of VMStateField with VMS_ARRAY_OF_POINTER flag
rust/vmstate: Fix num field when varray flags are set
rust/vmstate: Fix num_offset in vmstate macros
rust/vmstate: Remove unnecessary unsafe
exec/cpu-all: remove BSWAP_NEEDED
load_aout: replace bswap_needed with big_endian
rust: pl011: Check size of state struct at compile time
hw/char/pl011: Pad PL011State struct to same size as Rust impl
...

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

show more ...

rust/vmstate: Add unit test for vmstate_of macro

The vmstate has too many combinations of VMStateFlags and VMStateField.
Currently, the best way to test is to ensure that the Rust vmstate
definition

rust/vmstate: Add unit test for vmstate_of macro

The vmstate has too many combinations of VMStateFlags and VMStateField.
Currently, the best way to test is to ensure that the Rust vmstate
definition is consistent with the (possibly corresponding) C version.

Add a unit test to cover some patterns accepted by vmstate_of macro,
which correspond to the following C version macros:
* VMSTATE_U16
* VMSTATE_UNUSED
* VMSTATE_VARRAY_UINT16_UNSAFE
* VMSTATE_VARRAY_MULTIPLY

Note: Because vmstate_info_* are defined in vmstate-types.c, it's
necessary to link libmigration to rust unit tests. In the future,
maybe it's possible to spilt libmigration from rust_qemu_api_objs.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250318130219.1799170-12-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

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

* scripts: dump stdin on meson-buildoptions error
* rust: introduce qemu_api::cell::Opaque<>
* rust: express pinning requirem

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

* scripts: dump stdin on meson-buildoptions error
* rust: introduce qemu_api::cell::Opaque<>
* rust: express pinning requirements for timers
* rust: hpet: decode HPET registers into enums
* rust: cell: add full example of declaring a SysBusDevice
* rust: qom: remove operations on &mut

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# -----END PGP SIGNATURE-----
# gpg: Signature made Sun 09 Mar 2025 18:29:16 HKT
# 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]
# 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: (25 commits)
rust: pl011: Allow NULL chardev argument to pl011_create()
meson.build: default to -gsplit-dwarf for debug info
rust: qom: remove operations on &mut
rust: cell: add full example of declaring a SysBusDevice
rust: hpet: decode HPET registers into enums
rust: pl011: pass around registers::Data
rust: pl011: switch to safe chardev operation
rust: pl011: clean up visibilities of callbacks
rust: pl011: move register definitions out of lib.rs
rust: chardev: provide basic bindings to character devices
rust: bindings: remove more unnecessary Send/Sync impls
rust: chardev: wrap Chardev with Opaque<>
rust: memory: wrap MemoryRegion with Opaque<>
rust: sysbus: wrap SysBusDevice with Opaque<>
rust: hpet: do not access fields of SysBusDevice
rust: qdev: wrap Clock and DeviceState with Opaque<>
rust: qom: wrap Object with Opaque<>
rust: irq: wrap IRQState with Opaque<>
rust: timer: wrap QEMUTimer with Opaque<> and express pinning requirements
rust: hpet: embed Timer without the Option and Box indirection
...

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

show more ...

rust: chardev: provide basic bindings to character devices

Most of the character device API is pretty simple, with "0 or -errno"
or "number of bytes or -errno" as the convention for return codes.
Ad

rust: chardev: provide basic bindings to character devices

Most of the character device API is pretty simple, with "0 or -errno"
or "number of bytes or -errno" as the convention for return codes.
Add safe wrappers for the API to the CharBackend bindgen-generated
struct.

The API is not complete, but it covers the parts that are used
by the PL011 device, plus qemu_chr_fe_write which is needed to
implement the standard library Write trait.

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

show more ...

rust: qemu_api_macros: add Wrapper derive macro

Add a derive macro that makes it easy to peel off all the layers of
specialness (UnsafeCell, MaybeUninit, etc.) and just get a pointer
to the wrapped

rust: qemu_api_macros: add Wrapper derive macro

Add a derive macro that makes it easy to peel off all the layers of
specialness (UnsafeCell, MaybeUninit, etc.) and just get a pointer
to the wrapped type; and likewise add them back starting from a
*mut.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

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

* qom: Use command line syntax for default values in help
* i386: support cache topology with machine's configuration
* rust:

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

* qom: Use command line syntax for default values in help
* i386: support cache topology with machine's configuration
* rust: fix duplicate symbols from monitor-fd.c
* rust: add module to convert between success/-errno and io::Result
* rust: move class_init implementation from trait to method
* pvg: configuration improvements
* kvm guestmemfd: replace assertion with error
* riscv: cleanups
* target/i386/hvf: cleanups to emulation
* target/i386: add Zhaoxin and Yongfeng CPU model

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# gpg: Signature made Wed 26 Feb 2025 16:56:43 HKT
# 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]
# 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: (34 commits)
target/i386: Mask CMPLegacy bit in CPUID[0x80000001].ECX for Zhaoxin CPUs
target/i386: Introduce Zhaoxin Yongfeng CPU model
target/i386: Add CPUID leaf 0xC000_0001 EDX definitions
target/i386: Add support for Zhaoxin CPU vendor identification
target/riscv: move 128-bit check to TCG realize
target/riscv: remove unused macro DEFINE_CPU
i386/cpu: add has_caches flag to check smp_cache configuration
i386/pc: Support cache topology in -machine for PC machine
i386/cpu: Update cache topology with machine's configuration
i386/cpu: Support module level cache topology
rust: qom: get rid of ClassInitImpl
rust: pl011, qemu_api tests: do not use ClassInitImpl
rust: qom: add ObjectImpl::CLASS_INIT
rust: add SysBusDeviceImpl
rust: add IsA bounds to QOM implementation traits
target/i386/hvf: drop some dead code
target/i386/hvf: move and rename simulate_{rdmsr, wrmsr}
target/i386/hvf: move and rename {load, store}_regs
target/i386/hvf: use x86_segment in x86_decode.c
target/i386/hvf: fix the declaration of hvf_handle_io
...

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

show more ...

rust: add module to convert between success/-errno and io::Result

It is a common convention in QEMU to return a positive value in case of
success, and a negated errno value in case of error. Unfort

rust: add module to convert between success/-errno and io::Result

It is a common convention in QEMU to return a positive value in case of
success, and a negated errno value in case of error. Unfortunately,
using errno portably in Rust is a bit complicated; on Unix the errno
values are supported natively by io::Error, but on Windows they are not;
so, use the libc crate.

This is a set of utility functions that are used by both chardev and
block layer bindings.

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

show more ...

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

* rust: more qdev bindings
* rust: HPET device model with timer and GPIO bindings
* rust: small cleanups and fixes; run docte

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

* rust: more qdev bindings
* rust: HPET device model with timer and GPIO bindings
* rust: small cleanups and fixes; run doctests during CI
* ui/sdl2: reenable the SDL2 Windows keyboard hook procedure

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# gpg: Signature made Thu 13 Feb 2025 07:50:49 EST
# 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]
# 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: (27 commits)
ui/sdl2: reenable the SDL2 Windows keyboard hook procedure
rust: fix doctests
rust: vmstate: remove redundant link targets
rust: qemu_api: add a documentation header for all modules
i386: enable rust hpet for pc when rust is enabled
rust/timer/hpet: add qom and qdev APIs support
rust/timer/hpet: add basic HPET timer and HPETState
rust/timer/hpet: define hpet_fw_cfg
rust: add bindings for timer
rust: add bindings for memattrs
rust: add bindings for gpio_{in|out} initialization
rust/irq: Add a helper to convert [InterruptSource] to pointer
rust/qdev: add the macro to define bit property
i386/fw_cfg: move hpet_cfg definition to hpet.c
rust: pl011: convert pl011_create to safe Rust
rust: chardev, qdev: add bindings to qdev_prop_set_chr
rust: irq: define ObjectType for IRQState
rust: bindings for MemoryRegionOps
rust: bindings: add Send and Sync markers for types that have bindings
rust: qdev: switch from legacy reset to Resettable
...

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

show more ...

rust: add bindings for timer

Add timer bindings to help handle idiomatic Rust callbacks.

Additionally, wrap QEMUClockType in ClockType binding to avoid unsafe
calls in device code.

Signed-off-by:

rust: add bindings for timer

Add timer bindings to help handle idiomatic Rust callbacks.

Additionally, wrap QEMUClockType in ClockType binding to avoid unsafe
calls in device code.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250210030051.2562726-7-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

rust: chardev, qdev: add bindings to qdev_prop_set_chr

Because the argument to the function is an Owned<Chardev>, this also
adds an ObjectType implementation to Chardev.

Reviewed-by: Zhao Liu <zhao

rust: chardev, qdev: add bindings to qdev_prop_set_chr

Because the argument to the function is an Owned<Chardev>, this also
adds an ObjectType implementation to Chardev.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

rust: bindings for MemoryRegionOps

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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

* rust: miscellaneous changes
* target/i386: small code generation improvements
* target/i386: various cleanups and fixes
* c

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

* rust: miscellaneous changes
* target/i386: small code generation improvements
* target/i386: various cleanups and fixes
* cpu: remove env->nr_cores

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# gpg: Signature made Fri 10 Jan 2025 17:34:48 EST
# 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]
# 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: (38 commits)
i386/cpu: Set and track CPUID_EXT3_CMP_LEG in env->features[FEAT_8000_0001_ECX]
i386/cpu: Set up CPUID_HT in x86_cpu_expand_features() instead of cpu_x86_cpuid()
cpu: Remove nr_cores from struct CPUState
i386/cpu: Hoist check of CPUID_EXT3_TOPOEXT against threads_per_core
i386/cpu: Track a X86CPUTopoInfo directly in CPUX86State
i386/topology: Introduce helpers for various topology info of different level
i386/topology: Update the comment of x86_apicid_from_topo_ids()
i386/cpu: Drop cores_per_pkg in cpu_x86_cpuid()
i386/cpu: Drop the variable smp_cores and smp_threads in x86_cpu_pre_plug()
i386/cpu: Extract a common fucntion to setup value of MSR_CORE_THREAD_COUNT
target/i386/kvm: Replace ARRAY_SIZE(msr_handlers) with KVM_MSR_FILTER_MAX_RANGES
target/i386/kvm: Clean up error handling in kvm_arch_init()
target/i386/kvm: Return -1 when kvm_msr_energy_thread_init() fails
target/i386/kvm: Clean up return values of MSR filter related functions
target/i386/confidential-guest: Fix comment of x86_confidential_guest_kvm_type()
target/i386/kvm: Drop workaround for KVM_X86_DISABLE_EXITS_HTL typo
target/i386/kvm: Only save/load kvmclock MSRs when kvmclock enabled
target/i386/kvm: Remove local MSR_KVM_WALL_CLOCK and MSR_KVM_SYSTEM_TIME definitions
target/i386/kvm: Add feature bit definitions for KVM CPUID
i386/cpu: Mark avx10_version filtered when prefix is NULL
...

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

show more ...

rust: add a utility module for compile-time type checks

It is relatively common in the low-level qemu_api code to assert that
a field of a struct has a specific type; for example, it can be used
to

rust: add a utility module for compile-time type checks

It is relatively common in the low-level qemu_api code to assert that
a field of a struct has a specific type; for example, it can be used
to ensure that the fields match what the qemu_api and C code expects
for safety.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...