Merge tag 'ui-pull-request' of https://gitlab.com/marcandre.lureau/qemu into staging

ui: support multi plane texture

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Merge tag 'ui-pull-request' of https://gitlab.com/marcandre.lureau/qemu into staging

ui: support multi plane texture

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# gpg: Signature made Wed 07 May 2025 01:43:36 EDT
# gpg: using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg: issuer "marcandre.lureau@redhat.com"
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [full]
# gpg: aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [full]
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276 F62D DAE8 E109 7596 9CE5

* tag 'ui-pull-request' of https://gitlab.com/marcandre.lureau/qemu:
ui/spice: support multi plane dmabuf scanout
ui/dbus: change dbus ScanoutDMABUF interface
ui/egl: support multi-plane dmabuf when egl export/import
ui/egl: use DRM_FORMAT_MOD_INVALID as default modifier
ui/egl: require EGL_EXT_image_dma_buf_import_modifiers
ui/dmabuf: extend QemuDmaBuf to support multi-plane

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

show more ...

ui/spice: support multi plane dmabuf scanout

We need spice version >= 0.15.3 which has spice_qxl_gl_scanout2
API for multi plane scanout support.

v2:
* use new dmabuf API and check length
* che

ui/spice: support multi plane dmabuf scanout

We need spice version >= 0.15.3 which has spice_qxl_gl_scanout2
API for multi plane scanout support.

v2:
* use new dmabuf API and check length
* check spice_qxl_gl_scanout2 present instead of
bump spice version dependency

Signed-off-by: Qiang Yu <yuq825@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[ Fix style ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20250327025848.46962-7-yuq825@gmail.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 ...

meson: Add wasm build in build scripts

has_int128_type is set to false on emscripten as of now to avoid errors by
libffi. Tests are disabled on emscripten because they rely on host
features that are

meson: Add wasm build in build scripts

has_int128_type is set to false on emscripten as of now to avoid errors by
libffi. Tests are disabled on emscripten because they rely on host
features that aren't supported by emscripten (e.g. fork and unix
socket).

Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
Link: https://lore.kernel.org/r/ad03b3b180335f59e785e930968077bf15c46260.1745820062.git.ktokunaga.mail@gmail.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

meson, cargo: require Rust 1.77.0

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Merge tag 'pull-request-2025-04-30' of https://gitlab.com/thuth/qemu into staging

* Extend s390x diagnose call 308 subcode 10 to return more information
* Make valgrind support configurable
* Drop s

Merge tag 'pull-request-2025-04-30' of https://gitlab.com/thuth/qemu into staging

* Extend s390x diagnose call 308 subcode 10 to return more information
* Make valgrind support configurable
* Drop support for Python 3.8
* Some other misc cosmetic changes

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# gpg: Signature made Wed 30 Apr 2025 14:48:36 EDT
# gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg: issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg: aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2025-04-30' of https://gitlab.com/thuth/qemu:
docs/devel/build-environment: enhance MSYS2 instructions
hw/rtc/mc146818rtc: Drop pre-v3 migration stream support
meson.build: Put the D-Bus summary into the UI section
tests/functional/test_ppc64_pseries: Skip test_ppc64_linux_smt_boot if necessary
Drop support for Python 3.8
meson/configure: add 'valgrind' option & --{en, dis}able-valgrind flag
target/s390x: Return UVC cmd code, RC and RRC value when DIAG 308 Subcode 10 fails to enter secure mode
target/s390x: Introduce function when exiting PV
target/s390x: Introduce constant when checking if PV header couldn't be decrypted

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

show more ...

meson.build: Put the D-Bus summary into the UI section

We've got a dedicated section for UI options nowadays, so the
D-Bus display should get reported here, too.

Message-ID: <20250325055125.253669-

meson.build: Put the D-Bus summary into the UI section

We've got a dedicated section for UI options nowadays, so the
D-Bus display should get reported here, too.

Message-ID: <20250325055125.253669-1-thuth@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

show more ...

meson/configure: add 'valgrind' option & --{en, dis}able-valgrind flag

Currently valgrind debugging support for coroutine stacks is enabled
unconditionally when valgrind/valgrind.h is found. There i

meson/configure: add 'valgrind' option & --{en, dis}able-valgrind flag

Currently valgrind debugging support for coroutine stacks is enabled
unconditionally when valgrind/valgrind.h is found. There is no way
to disable valgrind support if valgrind.h is present in the build env.

This is bad for distros, as an dependency far down the chain may cause
valgrind.h to become installed, inadvertently enabling QEMU's valgrind
debugging support. It also means if a distro wants valgrind support
there is no way to mandate this.

The solution is to add a 'valgrind' build feature to meson and thus
configure script.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20250425121713.1913424-1-berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

show more ...

Merge tag 'single-binary-20250425' of https://github.com/philmd/qemu into staging

Various patches loosely related to single binary work:

- Replace cpu_list() definition by CPUClass::list_cpus() cal

Merge tag 'single-binary-20250425' of https://github.com/philmd/qemu into staging

Various patches loosely related to single binary work:

- Replace cpu_list() definition by CPUClass::list_cpus() callback
- Remove few MO_TE definitions on Hexagon / X86 targets
- Remove target_ulong uses in ARMMMUFaultInfo and ARM CPUWatchpoint
- Remove DEVICE_HOST_ENDIAN definition
- Evaluate TARGET_BIG_ENDIAN at compile time and use target_needs_bswap() more
- Rename target_words_bigendian() as target_big_endian()
- Convert target_name() and target_cpu_type() to TargetInfo API
- Constify QOM TypeInfo class_data/interfaces fields
- Get default_cpu_type calling machine_class_default_cpu_type()
- Correct various uses of GLibCompareDataFunc prototype
- Simplify ARM/Aarch64 gdb_get_core_xml_file() handling a bit
- Move device tree files in their own pc-bios/dtb/ subdir
- Correctly check strchrnul() symbol availability on macOS SDK
- Move target-agnostic methods out of cpu-target.c and accel-target.c
- Unmap canceled USB XHCI packet
- Use deposit/extract API in designware model
- Fix MIPS16e translation
- Few missing header fixes

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# gpg: Signature made Fri 25 Apr 2025 11:26:55 EDT
# gpg: using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD 6BB2 E3E3 2C2C DEAD C0DE

* tag 'single-binary-20250425' of https://github.com/philmd/qemu: (58 commits)
qemu: Convert target_name() to TargetInfo API
accel: Move target-agnostic code from accel-target.c -> accel-common.c
accel: Make AccelCPUClass structure target-agnostic
accel: Include missing 'qemu/accel.h' header in accel-internal.h
accel: Implement accel_init_ops_interfaces() for both system/user mode
cpus: Move target-agnostic methods out of cpu-target.c
cpus: Replace CPU_RESOLVING_TYPE -> target_cpu_type()
qemu: Introduce target_cpu_type()
qapi: Rename TargetInfo structure as QemuTargetInfo
hw/microblaze: Evaluate TARGET_BIG_ENDIAN at compile time
hw/mips: Evaluate TARGET_BIG_ENDIAN at compile time
target/xtensa: Evaluate TARGET_BIG_ENDIAN at compile time
target/mips: Check CPU endianness at runtime using env_is_bigendian()
accel/kvm: Use target_needs_bswap()
linux-user/elfload: Use target_needs_bswap()
target/hexagon: Include missing 'accel/tcg/getpc.h'
accel/tcg: Correct list of included headers in tcg-stub.c
system/kvm: make functions accessible from common code
meson: Use osdep_prefix for strchrnul()
meson: Share common C source prefixes
...

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

show more ...

qemu: Convert target_name() to TargetInfo API

Have target_name() be a target-agnostic method, dispatching
to a per-target TargetInfo singleton structure.
By default a stub singleton is used. No logi

qemu: Convert target_name() to TargetInfo API

Have target_name() be a target-agnostic method, dispatching
to a per-target TargetInfo singleton structure.
By default a stub singleton is used. No logical change
expected.

Inspired-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
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>
Message-Id: <20250424222112.36194-3-philmd@linaro.org>

show more ...

qemu: Introduce target_cpu_type()

Introduce the target_cpu_type() helper to access the
CPU_RESOLVING_TYPE target-specific definition from
target-agnostic code.

Reviewed-by: Pierrick Bouvier <pierri

qemu: Introduce target_cpu_type()

Introduce the target_cpu_type() helper to access the
CPU_RESOLVING_TYPE target-specific definition from
target-agnostic code.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20250417165430.58213-2-philmd@linaro.org>

show more ...

meson: Use osdep_prefix for strchrnul()

macOS SDK may have the symbol of strchrnul(), but it is actually
available only on macOS 15.4 or later and that fact is codified in
string.h. Include the head

meson: Use osdep_prefix for strchrnul()

macOS SDK may have the symbol of strchrnul(), but it is actually
available only on macOS 15.4 or later and that fact is codified in
string.h. Include the header file using osdep_prefix to check if the
function is available on the deployment target.

Cc: qemu-stable@nongnu.org
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250424-buildsys-v1-4-97655e3b25d7@daynix.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

show more ...

meson: Share common C source prefixes

gnu_source_prefix defines _GNU_SOURCE for compiler object functions.
The definition is universally available in the code base.

docs/devel/style.rst also says t

meson: Share common C source prefixes

gnu_source_prefix defines _GNU_SOURCE for compiler object functions.
The definition is universally available in the code base.

docs/devel/style.rst also says that the "qemu/osdep.h" header is
always included, so files included in the file is also universally
available in the code base.

Rename gnu_source_prefix to osdep_prefix, and add #include directives
that are referred by the users of gnu_source_prefix and contained in
qemu/osdep.h to safely de-duplicate #include directives.

Cc: qemu-stable@nongnu.org
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250424-buildsys-v1-3-97655e3b25d7@daynix.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

show more ...

meson: Remove CONFIG_STATX and CONFIG_STATX_MNT_ID

CONFIG_STATX and CONFIG_STATX_MNT_ID are not used since commit
e0dc2631ec4 ("virtiofsd: Remove source").

Cc: qemu-stable@nongnu.org
Signed-off-by:

meson: Remove CONFIG_STATX and CONFIG_STATX_MNT_ID

CONFIG_STATX and CONFIG_STATX_MNT_ID are not used since commit
e0dc2631ec4 ("virtiofsd: Remove source").

Cc: qemu-stable@nongnu.org
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250424-buildsys-v1-2-97655e3b25d7@daynix.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

show more ...

meson: Use has_header_symbol() to check getcpu()

The use of gnu_source_prefix in the detection of getcpu() was
ineffective because the header file that declares getcpu() when
_GNU_SOURCE is defined

meson: Use has_header_symbol() to check getcpu()

The use of gnu_source_prefix in the detection of getcpu() was
ineffective because the header file that declares getcpu() when
_GNU_SOURCE is defined was not included. Pass sched.h to
has_header_symbol() so that the existence of the declaration will be
properly checked.

Cc: qemu-stable@nongnu.org
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250424-buildsys-v1-1-97655e3b25d7@daynix.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

show more ...

Merge tag 'pull-tcg-20250423' of https://gitlab.com/rth7680/qemu into staging

meson: Introduce top-level libuser_ss and libsystem_ss
meson: Add hw_common_arch dictionary
accel/tcg: Lots of cleanups

Merge tag 'pull-tcg-20250423' of https://gitlab.com/rth7680/qemu into staging

meson: Introduce top-level libuser_ss and libsystem_ss
meson: Add hw_common_arch dictionary
accel/tcg: Lots of cleanups to enable build once for:
user-exec-stub.c,
plugin-gen.c,
translator.c
page-vary: Restrict scope of TARGET_PAGE_BITS_MIN
tcg: Always define TARGET_INSN_START_EXTRA_WORDS
tcg: Convert TARGET_GUEST_DEFAULT_MO to TCGCPUOps::guest_default_memory_order
tcg: Convert TARGET_SUPPORTS_MTTCG to TCGCPUOps::mttcg_supported field
target/riscv: Do not expose rv128 CPU on user mode emulation

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# gpg: Signature made Wed 23 Apr 2025 20:48:05 EDT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F

* tag 'pull-tcg-20250423' of https://gitlab.com/rth7680/qemu: (148 commits)
tcg: Convert TARGET_SUPPORTS_MTTCG to TCGCPUOps::mttcg_supported field
target/i386: Remove AccelCPUClass::cpu_class_init need
target/riscv: Remove AccelCPUClass::cpu_class_init need
accel/tcg: Move mttcg warning to tcg_init_machine
tcg: Convert TCGState::mttcg_enabled to TriState
accel/tcg: Remove mttcg_enabled
tcg: Move qemu_tcg_mttcg_enabled() to 'system/tcg.h'
tcg: Pass max_threads not max_cpus to tcg_init
tcg: Move cpu_req_mo() macro to target-agnostic 'backend-ldst.h'
tcg: Remove the TCG_GUEST_DEFAULT_MO definition globally
tcg: Have tcg_req_mo() use TCGCPUOps::guest_default_memory_order
tcg: Propagate CPUState argument to cpu_req_mo()
tcg: Remove use of TCG_GUEST_DEFAULT_MO in tb_gen_code()
tcg: Define guest_default_memory_order in TCGCPUOps
tcg: Simplify tcg_req_mo() macro
tcg: Always define TCG_GUEST_DEFAULT_MO
exec: Do not include 'accel/tcg/cpu-ldst.h' in 'exec-all.h'
exec: Restrict 'cpu_ldst.h' to accel/tcg/
exec: Restrict 'cpu-ldst-common.h' to accel/tcg/
tcg: Always define TARGET_INSN_START_EXTRA_WORDS
...

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

show more ...

meson: add common hw files

Those files will be compiled once per base architecture ("arm" in this
case), instead of being compiled for every variant/bitness of
architecture.

We make sure to not inc

meson: add common hw files

Those files will be compiled once per base architecture ("arm" in this
case), instead of being compiled for every variant/bitness of
architecture.

We make sure to not include target cpu definitions (exec/cpu-defs.h) by
defining header guard directly. This way, a given compilation unit can
access a specific cpu definition, but not access to compile time defines
associated.

Previous commits took care to clean up some headers to not rely on
cpu-defs.h content.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250325045915.994760-24-pierrick.bouvier@linaro.org>

show more ...

meson: Only allow CONFIG_USER_ONLY from certain source sets

Poison CONFIG_USER_ONLY and CONFIG_SOFTMMU unless
the compilation unit is in specific_ss, libuser_ss,
or libsystem_ss. This is intended t

meson: Only allow CONFIG_USER_ONLY from certain source sets

Poison CONFIG_USER_ONLY and CONFIG_SOFTMMU unless
the compilation unit is in specific_ss, libuser_ss,
or libsystem_ss. This is intended to prevent files
being incorrectly added to common_ss.

Remove #ifndef CONFIG_USER_ONLY / #error / #endif blocks.
All they do is trigger the poison error.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

meson: Introduce top-level libuser_ss and libsystem_ss

We already have two subdirectories for which we need
to build files twice, for user vs system modes.
Move this handling to the top level.

This

meson: Introduce top-level libuser_ss and libsystem_ss

We already have two subdirectories for which we need
to build files twice, for user vs system modes.
Move this handling to the top level.

This cannot be combined with user_ss or system_ss,
because the formulation has not been extended to support
configuration symbols.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

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

fixes

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

fixes

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# 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:
Revert "meson.build: default to -gsplit-dwarf for debug info"
hw/misc: use extract64 instead of 1 << i

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

show more ...

Revert "meson.build: default to -gsplit-dwarf for debug info"

This reverts commit 563b1a35ed1f1151505d4fe5f723827d1b3fd4bc.

Split debug info support is broken when cross compiling
(https://gcc.gnu.

Revert "meson.build: default to -gsplit-dwarf for debug info"

This reverts commit 563b1a35ed1f1151505d4fe5f723827d1b3fd4bc.

Split debug info support is broken when cross compiling
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99973). People
that would like to use it can add it via --extra-cflags.

Reported-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

Merge tag 'pull-target-arm-20250314-1' of https://git.linaro.org/people/pmaydell/qemu-arm into staging

target-arm queue:
* Correctly handle corner cases of guest attempting an exception
return t

Merge tag 'pull-target-arm-20250314-1' of https://git.linaro.org/people/pmaydell/qemu-arm into staging

target-arm queue:
* Correctly handle corner cases of guest attempting an exception
return to AArch32 when target EL is AArch64 only
* MAINTAINERS: Fix status for Arm boards I "maintain"
* tests/functional: Bump up arm_replay timeout
* Revert "hw/char/pl011: Warn when using disabled receiver"
* util/cacheflush: Make first DSB unconditional on aarch64
* target/arm: Fix SVE/SME access check logic
* meson.build: Set RUST_BACKTRACE for all tests

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# gpg: Signature made Fri 14 Mar 2025 09:15:49 EDT
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [full]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [full]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [full]
# gpg: aka "Peter Maydell <peter@archaic.org.uk>" [unknown]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE

* tag 'pull-target-arm-20250314-1' of https://git.linaro.org/people/pmaydell/qemu-arm:
meson.build: Set RUST_BACKTRACE for all tests
target/arm: Simplify pstate_sm check in sve_access_check
target/arm: Make DisasContext.{fp, sve}_access_checked tristate
util/cacheflush: Make first DSB unconditional on aarch64
Revert "hw/char/pl011: Warn when using disabled receiver"
tests/functional: Bump up arm_replay timeout
MAINTAINERS: Fix status for Arm boards I "maintain"
target/arm: Forbid return to AArch32 when CPU is AArch64-only
target/arm: Add cpu local variable to exception_return helper
target/arm: HCR_EL2.RW should be RAO/WI if EL1 doesn't support AArch32
target/arm: SCR_EL3.RW should be treated as 1 if EL2 doesn't support AArch32
target/arm: Move arm_current_el() and arm_el_is_aa64() to internals.h
target/arm: Move arm_cpu_data_is_big_endian() etc to internals.h
linux-user/arm: Remove unused get_put_user macros
linux-user/aarch64: Remove unused get/put_user macros
target/arm: Un-inline access_secure_reg()
target/arm: Move A32_BANKED_REG_{GET,SET} macros to cpregs.h

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

show more ...

meson.build: Set RUST_BACKTRACE for all tests

We want to capture potential Rust backtraces on panics in our test
logs, which isn't Rust's default behaviour. Set RUST_BACKTRACE=1 in
the add_test_set

meson.build: Set RUST_BACKTRACE for all tests

We want to capture potential Rust backtraces on panics in our test
logs, which isn't Rust's default behaviour. Set RUST_BACKTRACE=1 in
the add_test_setup environments, so that all our tests get run with
this environment variable set.

This makes the setting of that variable in the gitlab CI template
redundant, so we can remove it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20250310102950.3752908-1-peter.maydell@linaro.org

show more ...

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

Block layer patches

- virtio-scsi: add iothread-vq-mapping parameter
- Improve writethrough performance
- Fix missing zero ini

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

Block layer patches

- virtio-scsi: add iothread-vq-mapping parameter
- Improve writethrough performance
- Fix missing zero init in bdrv_snapshot_goto()
- Added scripts/qcow2-to-stdout.py
- Code cleanup and iotests fixes

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# gpg: Signature made Fri 14 Mar 2025 01:00:27 HKT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (23 commits)
scripts/qcow2-to-stdout.py: Add script to write qcow2 images to stdout
virtio-scsi: only expose cmd vqs via iothread-vq-mapping
virtio-scsi: handle ctrl virtqueue in main loop
virtio-scsi: add iothread-vq-mapping parameter
virtio: extract iothread-vq-mapping.h API
virtio-blk: tidy up iothread_vq_mapping functions
virtio-blk: extract cleanup_iothread_vq_mapping() function
virtio-scsi: perform TMFs in appropriate AioContexts
virtio-scsi: protect events_dropped field
virtio-scsi: introduce event and ctrl virtqueue locks
scsi: introduce requests_lock
scsi: track per-SCSIRequest AioContext
dma: use current AioContext for dma_blk_io()
scsi-disk: drop unused SCSIDiskState->bh field
iotests: Limit qsd-migrate to working formats
aio-posix: Adjust polling time also for new handlers
aio-posix: Separate AioPolledEvent per AioHandler
aio-posix: Factor out adjust_polling_time()
aio: Create AioPolledEvent
block/io: Ignore FUA with cache.no-flush=on
...

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

show more ...

file-posix: Support FUA writes

Until now, FUA was always emulated with a separate flush after the write
for file-posix. The overhead of processing a second request can reduce
performance significant

file-posix: Support FUA writes

Until now, FUA was always emulated with a separate flush after the write
for file-posix. The overhead of processing a second request can reduce
performance significantly for a guest disk that has disabled the write
cache, especially if the host disk is already write through, too, and
the flush isn't actually doing anything.

Advertise support for REQ_FUA in write requests and implement it for
Linux AIO and io_uring using the RWF_DSYNC flag for write requests. The
thread pool still performs a separate fdatasync() call. This can be
improved later by using the pwritev2() syscall if available.

As an example, this is how fio numbers can be improved in some scenarios
with this patch (all using virtio-blk with cache=directsync on an nvme
block device for the VM, fio with ioengine=libaio,direct=1,sync=1):

| old | with FUA support
------------------------------+---------------+-------------------
bs=4k, iodepth=1, numjobs=1 | 45.6k iops | 56.1k iops
bs=4k, iodepth=1, numjobs=16 | 183.3k iops | 236.0k iops
bs=4k, iodepth=16, numjobs=1 | 258.4k iops | 311.1k iops

However, not all scenarios are clear wins. On another slower disk I saw
little to no improvment. In fact, in two corner case scenarios, I even
observed a regression, which I however consider acceptable:

1. On slow host disks in a write through cache mode, when the guest is
using virtio-blk in a separate iothread so that polling can be
enabled, and each completion is quickly followed up with a new
request (so that polling gets it), it can happen that enabling FUA
makes things slower - the additional very fast no-op flush we used to
have gave the adaptive polling algorithm a success so that it kept
polling. Without it, we only have the slow write request, which
disables polling. This is a problem in the polling algorithm that
will be fixed later in this series.

2. With a high queue depth, it can be beneficial to have flush requests
for another reason: The optimisation in bdrv_co_flush() that flushes
only once per write generation acts as a synchronisation mechanism
that lets all requests complete at the same time. This can result in
better batching and if the disk is very fast (I only saw this with a
null_blk backend), this can make up for the overhead of the flush and
improve throughput. In theory, we could optionally introduce a
similar artificial latency in the normal completion path to achieve
the same kind of completion batching. This is not implemented in this
series.

Compatibility is not a concern for the kernel side of io_uring, it has
supported RWF_DSYNC from the start. However, io_uring_prep_writev2() is
not available before liburing 2.2.

Linux AIO started supporting it in Linux 4.13 and libaio 0.3.111. The
kernel is not a problem for any supported build platform, so it's not
necessary to add runtime checks. However, openSUSE is still stuck with
an older libaio version that would break the build.

We must detect the presence of the writev2 functions in the user space
libraries at build time to avoid build failures.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20250307221634.71951-2-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...