Commit Graph

893 Commits

Author SHA1 Message Date
Peter Maydell
92ec780519 RISC-V PR for 9.2
* Fix an access to VXSAT
 * Expose RV32 cpu to RV64 QEMU
 * Don't clear PLIC pending bits on IRQ lowering
 * Make PLIC zeroth priority register read-only
 * Set vtype.vill on CPU reset
 * Check and update APLIC pending when write sourcecfg
 * Avoid dropping charecters with HTIF
 * Apply FIFO backpressure to guests using SiFive UART
 * Support for control flow integrity extensions
 * Support for the IOMMU with the virt machine
 * set 'aia_mode' to default in error path
 * clarify how 'riscv-aia' default works
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Merge tag 'pull-riscv-to-apply-20241031-1' of https://github.com/alistair23/qemu into staging

RISC-V PR for 9.2

* Fix an access to VXSAT
* Expose RV32 cpu to RV64 QEMU
* Don't clear PLIC pending bits on IRQ lowering
* Make PLIC zeroth priority register read-only
* Set vtype.vill on CPU reset
* Check and update APLIC pending when write sourcecfg
* Avoid dropping charecters with HTIF
* Apply FIFO backpressure to guests using SiFive UART
* Support for control flow integrity extensions
* Support for the IOMMU with the virt machine
* set 'aia_mode' to default in error path
* clarify how 'riscv-aia' default works

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# gpg: Signature made Thu 31 Oct 2024 03:51:48 GMT
# gpg:                using RSA key 6AE902B6A7CA877D6D659296AF7C95130C538013
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [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: 6AE9 02B6 A7CA 877D 6D65  9296 AF7C 9513 0C53 8013

* tag 'pull-riscv-to-apply-20241031-1' of https://github.com/alistair23/qemu: (50 commits)
  target/riscv: Fix vcompress with rvv_ta_all_1s
  target/riscv/kvm: clarify how 'riscv-aia' default works
  target/riscv/kvm: set 'aia_mode' to default in error path
  docs/specs: add riscv-iommu
  qtest/riscv-iommu-test: add init queues test
  hw/riscv/riscv-iommu: add DBG support
  hw/riscv/riscv-iommu: add ATS support
  hw/riscv/riscv-iommu: add Address Translation Cache (IOATC)
  test/qtest: add riscv-iommu-pci tests
  hw/riscv/virt.c: support for RISC-V IOMMU PCIDevice hotplug
  hw/riscv: add riscv-iommu-pci reference device
  pci-ids.rst: add Red Hat pci-id for RISC-V IOMMU device
  hw/riscv: add RISC-V IOMMU base emulation
  hw/riscv: add riscv-iommu-bits.h
  exec/memtxattr: add process identifier to the transaction attributes
  target/riscv: Expose zicfiss extension as a cpu property
  disas/riscv: enable disassembly for compressed sspush/sspopchk
  disas/riscv: enable disassembly for zicfiss instructions
  target/riscv: compressed encodings for sspush and sspopchk
  target/riscv: implement zicfiss instructions
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-31 16:34:25 +00:00
Tomasz Jeznach
0c54acb824 hw/riscv: add RISC-V IOMMU base emulation
The RISC-V IOMMU specification is now ratified as-per the RISC-V
international process. The latest frozen specifcation can be found at:

https://github.com/riscv-non-isa/riscv-iommu/releases/download/v1.0/riscv-iommu.pdf

Add the foundation of the device emulation for RISC-V IOMMU. It includes
support for s-stage (sv32, sv39, sv48, sv57 caps) and g-stage (sv32x4,
sv39x4, sv48x4, sv57x4 caps).

Other capabilities like ATS and DBG support will be added incrementally
in the next patches.

Co-developed-by: Sebastien Boeuf <seb@rivosinc.com>
Signed-off-by: Sebastien Boeuf <seb@rivosinc.com>
Signed-off-by: Tomasz Jeznach <tjeznach@rivosinc.com>
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Jason Chien <jason.chien@sifive.com>
Message-ID: <20241016204038.649340-4-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2024-10-31 13:51:24 +10:00
Peter Maydell
e4bad9cc5e virtio-gpu: add venus/vulkan capability
We are currently lacking a declared maintainer for the sub-system so
 while we look for one I'm merging after testing locally.
 
   - convert some fprintfs to proper trace events
   - move timers used by GL devices into GL structures
   - handle virtio_gpu_virgl_init() failure better
   - implement unrealize for GL devices
   - use virgl version numbering to gate features
   - support context-init feature
   - don't require udmabuf for virgl only
   - add virgl resource tracker
   - allow command submission to be suspended
   - handle resource blob commands
   - dynamically handle capabilit sets
   - add venus context support for passing vulkan
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Merge tag 'pull-virtio-gpu-vulkan-291024-1' of https://gitlab.com/stsquad/qemu into staging

virtio-gpu: add venus/vulkan capability

We are currently lacking a declared maintainer for the sub-system so
while we look for one I'm merging after testing locally.

  - convert some fprintfs to proper trace events
  - move timers used by GL devices into GL structures
  - handle virtio_gpu_virgl_init() failure better
  - implement unrealize for GL devices
  - use virgl version numbering to gate features
  - support context-init feature
  - don't require udmabuf for virgl only
  - add virgl resource tracker
  - allow command submission to be suspended
  - handle resource blob commands
  - dynamically handle capabilit sets
  - add venus context support for passing vulkan

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# gpg: Signature made Tue 29 Oct 2024 12:08:59 GMT
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* tag 'pull-virtio-gpu-vulkan-291024-1' of https://gitlab.com/stsquad/qemu:
  virtio-gpu: Support Venus context
  virtio-gpu: Register capsets dynamically
  virtio-gpu: Handle resource blob commands
  virtio-gpu: Support suspension of commands processing
  virtio-gpu: Add virgl resource management
  virtio-gpu: Don't require udmabuf when blobs and virgl are enabled
  virtio-gpu: Support context-init feature with virglrenderer
  virtio-gpu: Use pkgconfig version to decide which virgl features are available
  virtio-gpu: Unrealize GL device
  virtio-gpu: Handle virtio_gpu_virgl_init() failure
  virtio-gpu: Move print_stats timer to VirtIOGPUGL
  virtio-gpu: Move fence_poll timer to VirtIOGPUGL
  virtio-gpu: Use trace events for tracking number of in-flight fences

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-29 17:05:54 +00:00
Peter Maydell
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Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging

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# gpg: Signature made Tue 29 Oct 2024 07:54:14 GMT
# gpg:                using RSA key 215D46F48246689EC77F3562EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [marginal]
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* tag 'net-pull-request' of https://github.com/jasowang/qemu:
  virtio-net: Avoid indirection_table_mask overflow
  Fix calculation of minimum in colo_compare_tcp
  net: Check if nc is NULL in qemu_get_vnet_hdr_len()
  net/tap-win32: Fix gcc 14 format truncation errors
  chardev: finalize 'reconnect' deprecation
  net/stream: deprecate 'reconnect' in favor of 'reconnect-ms'
  hw/net: improve tracing of eBPF RSS setup
  ebpf: improve trace event coverage to all key operations
  hw/net: report errors from failing to use eBPF RSS FDs
  ebpf: add formal error reporting to all APIs
  ebpf: improve error trace events
  ebpf: drop redundant parameter checks in static methods
  hw/net: fix typo s/epbf/ebpf/ in virtio-net
  net: fix build when libbpf is disabled, but libxdp is enabled

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-29 14:00:43 +00:00
Dmitry Osipenko
ffac9641ba virtio-gpu: Use pkgconfig version to decide which virgl features are available
New virglrerenderer features were stabilized with release of v1.0.0.
Presence of symbols in virglrenderer.h doesn't guarantee ABI compatibility
with pre-release development versions of libvirglerender. Use virglrenderer
version to decide reliably which virgl features are available.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Message-Id: <20241024210311.118220-7-dmitry.osipenko@collabora.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2024-10-28 16:56:35 +00:00
Daniel P. Berrangé
1f37280b37 net: fix build when libbpf is disabled, but libxdp is enabled
The net/af-xdp.c code is enabled when the libxdp library is present,
however, it also has direct API calls to bpf_xdp_query_id &
bpf_xdp_detach which are provided by the libbpf library.

As a result if building with --disable-libbpf, but libxdp gets
auto-detected, we'll fail to link QEMU

  /usr/bin/ld: libcommon.a.p/net_af-xdp.c.o: undefined reference to symbol 'bpf_xdp_query_id@@LIBBPF_0.7.0'

There are two bugs here

 * Since we have direct libbpf API calls, when building
   net/af-xdp.c, we must tell meson that libbpf is a
   dependancy, so that we directly link to it, rather
   than relying on indirect linkage.

 * When must skip probing for libxdp at all, when libbpf
   is not found, raising an error if --enable-libxdp was
   given explicitly.

Fixes: cb039ef3d9
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2024-10-28 14:37:25 +08:00
Peter Maydell
fdf250e5a3 testing, gdbstub and plugin updates
- update MAINTAINERS with pointers to foo/next
   - add NOFETCH to help test custom docker builds
   - update microblaze toolchain with atomic fixes
   - update tsan build and documentation
   - don't restrict build-environment by arch unless needed
   - add cross-modifying code test
   - add tracepoints for cpu_step_atomic fallbacks
   - fix defaults for loongarch cross build
   - make check-[dco|patch] a little more verbose
   - fix gdbstub bug preventing aarch64_be-linux-user starting
   - add basic test for aarch64_be
   - clean up some gdbstub test scripts
   - fix qemu_plugin_reset
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Merge tag 'pull-maintainer-oct-misc-241024-1' of https://gitlab.com/stsquad/qemu into staging

testing, gdbstub and plugin updates

  - update MAINTAINERS with pointers to foo/next
  - add NOFETCH to help test custom docker builds
  - update microblaze toolchain with atomic fixes
  - update tsan build and documentation
  - don't restrict build-environment by arch unless needed
  - add cross-modifying code test
  - add tracepoints for cpu_step_atomic fallbacks
  - fix defaults for loongarch cross build
  - make check-[dco|patch] a little more verbose
  - fix gdbstub bug preventing aarch64_be-linux-user starting
  - add basic test for aarch64_be
  - clean up some gdbstub test scripts
  - fix qemu_plugin_reset

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# gpg: Signature made Thu 24 Oct 2024 10:05:40 BST
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# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* tag 'pull-maintainer-oct-misc-241024-1' of https://gitlab.com/stsquad/qemu:
  plugins: fix qemu_plugin_reset
  MAINTAINERS: mention my plugins/next tree
  testing: Enhance gdb probe script
  tests/tcg/aarch64: Use raw strings for regexes in test-mte.py
  tests/tcg: enable basic testing for aarch64_be-linux-user
  config/targets: update aarch64_be-linux-user gdb XML list
  MAINTAINERS: mention my gdbstub/next tree
  gitlab: make check-[dco|patch] a little more verbose
  dockerfiles: fix default targets for debian-loongarch-cross
  accel/tcg: add tracepoints for cpu_loop_exit_atomic
  tests/tcg/x86_64: Add cross-modifying code test
  scripts/ci: remove architecture checks for build-environment updates
  docs/devel: update tsan build documentation
  meson: hide tsan related warnings
  MAINTAINERS: mention my testing/next tree
  tests/docker: add NOFETCH env variable for testing
  tests/docker: Fix microblaze atomics

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-25 19:12:06 +01:00
Pierrick Bouvier
cf6fbba724 meson: hide tsan related warnings
When building with gcc-12 -fsanitize=thread, gcc reports some
constructions not supported with tsan.
Found on debian stable.

qemu/include/qemu/atomic.h:36:52: error: ‘atomic_thread_fence’ is not supported with ‘-fsanitize=thread’ [-Werror=tsan]
   36 | #define smp_mb()                     ({ barrier(); __atomic_thread_fence(__ATOMIC_SEQ_CST); })
      |                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20240910174013.1433331-2-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20241023113406.1284676-5-alex.bennee@linaro.org>
2024-10-24 09:56:09 +01:00
Brad Smith
f8d3116fdd meson.build: Remove ncurses workaround for OpenBSD
meson.build: Remove ncurses workaround for OpenBSD

OpenBSD 7.5 has upgraded to ncurses 6.4.

Signed-off-by: Brad Smith <brad@comstyle.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-10-21 22:40:47 +03:00
Peter Maydell
35152940b7 UI-related fixes & shareable 2d memory with -display dbus
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Merge tag 'ui-pull-request' of https://gitlab.com/marcandre.lureau/qemu into staging

UI-related fixes & shareable 2d memory with -display dbus

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# 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:
  audio/pw: Report more accurate error when connecting to PipeWire fails
  tests: add basic -display dbus Map.Unix test
  ui: refactor using a common qemu_pixman_shareable
  virtio-gpu: allocate shareable 2d resources on !win32
  ui/dbus: implement Unix.Map
  ui/dbus: add Listener.Unix.Map interface XML
  ui/dbus: make Listener.Win32.Map win32-specific
  meson: find_program('gdbus-codegen') directly
  ui/surface: allocate shared memory on !win32
  ui/dbus: add trace for can_share_map
  ui/dbus: do not limit to one listener per connection / bus name
  ui/pixman: generalize shared_image_destroy
  util/memfd: report potential errors on free
  ui/dbus: discard pending CursorDefine on new one
  ui/dbus: discard display messages on disable
  ui/dbus: fix filtering all update messages
  ui/win32: fix potential use-after-free with dbus shared memory
  ui/dbus: fix leak on message filtering
  hw/audio/hda: fix memory leak on audio setup
  hw/audio/hda: free timer on exit

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-14 17:05:25 +01:00
Paolo Bonzini
95e82f9b38 meson: check in main meson.build for native Rust compiler
A working native Rust compiler is always needed in order to compile Rust
code, even when cross compiling, in order to build the procedural macros
that QEMU uses.

Right now, the check is done in rust/qemu-api-macros/meson.build, but this
has two disadvantages.  First, it makes the build fail when the Meson "rust"
option is set to "auto" (instead, Rust support should be disabled).  Second,
add_languages() is one of the few functions that are executed even by
"meson introspect", except that "meson introspect" executes both branches
of "if" statements!  Therefore, "meson introspect" tries to look for a
Rust compiler even if the option is disabled---and then fails because
the compiler is required by rust/qemu-api-macros/meson.build.  This is
visible for example if the compilation host has a stale
scripts/meson-buildoptions.sh and no rustc installed.

Both issues can be fixed by moving the check to the main meson.build,
together with the check for the cross compiler.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-14 15:48:05 +01:00
Marc-André Lureau
c118c8eb3e meson: find_program('gdbus-codegen') directly
gio.pc variable is a bit bogus in context of cross-compilation, since it
contains an absolute path, relative to the sysroot directory. On Fedora, it ends
up as:
/usr/x86_64-w64-mingw32/sys-root/mingw/lib/pkgconfig/usr/bin/gdbus-codegen
path which does not exist because it is not shipped by Fedora mingw
packages.

Instead, we can rely on meson find_program() behaviour to do a better
job based on its search order and capabilities.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-ID: <20241008125028.1177932-14-marcandre.lureau@redhat.com>
2024-10-14 17:34:09 +04:00
Peter Maydell
b38d263bca * first commit for Rust support
* add CI job using Fedora + Rust nightly
 * fix detection of ATOMIC128 on x86_64
 * fix compilation with Sphinx 8.1.0
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* first commit for Rust support
* add CI job using Fedora + Rust nightly
* fix detection of ATOMIC128 on x86_64
* fix compilation with Sphinx 8.1.0

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# gpg: Signature made Fri 11 Oct 2024 12:48:53 BST
# 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:
  docs: use consistent markup for footnotes
  docs: avoid footnotes consisting of just URLs
  docs: fix invalid footnote syntax
  gitlab-ci: add Rust-enabled CI job
  dockerfiles: add a Dockerfile using a nightly Rust toolchain
  meson: ensure -mcx16 is passed when detecting ATOMIC128
  meson: define qemu_isa_flags
  meson: fix machine option for x86_version
  rust: add PL011 device model
  rust: add utility procedural macro crate
  scripts/archive-source: find directory name for subprojects
  rust: add crate to expose bindings and interfaces
  meson.build: add HAVE_GLIB_WITH_ALIGNED_ALLOC flag
  .gitattributes: add Rust diff and merge attributes
  rust: add bindgen step as a meson dependency
  configure, meson: detect Rust toolchain
  build-sys: Add rust feature option
  Require meson version 1.5.0

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-11 18:19:37 +01:00
Paolo Bonzini
8db4e0f92e meson: ensure -mcx16 is passed when detecting ATOMIC128
Moving -mcx16 out of CPU_CFLAGS caused the detection of ATOMIC128 to
fail, because flags have to be specified by hand in cc.compiles and
cc.links invocations (why oh why??).

Ensure that these tests enable all the instruction set extensions that
will be used to build the emulators.

Fixes: c2bf2ccb26 ("configure: move -mcx16 flag out of CPU_CFLAGS", 2024-05-24)
Reported-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-11 12:32:17 +02:00
Paolo Bonzini
6ae8c5382b meson: define qemu_isa_flags
Create a separate variable for compiler flags that enable
specific instruction set extensions, so that they can be used with
cc.compiles/cc.links.

Note that -mfpmath=sse is a code generation option but it does not
enable new instructions, therefore I did not make it part of
qemu_isa_flags.

Suggested-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-11 12:32:17 +02:00
Pierrick Bouvier
461a9252e2 meson: fix machine option for x86_version
s/mbmi1/mbmi/

When configuring with -Dx86_version >= 3, meson step works, but
compilation fails because option -mbmi1 is unknown.

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Link: https://lore.kernel.org/r/20241004223715.1275428-1-pierrick.bouvier@linaro.org
Cc: qemu-stable@nongnu.org
Fixes: ef7d1adfa8 ("meson: allow configuring the x86-64 baseline", 2024-06-28)
Revieved-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-11 12:32:17 +02:00
Paolo Bonzini
d0f0cd5b1f rust: add PL011 device model
This commit adds a re-implementation of hw/char/pl011.c in Rust.

How to build:

1. Configure a QEMU build with:
   --enable-system --target-list=aarch64-softmmu --enable-rust
2. Launching a VM with qemu-system-aarch64 should use the Rust version
   of the pl011 device

Co-authored-by: Junjie Mao <junjie.mao@intel.com>
Co-authored-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Link: https://lore.kernel.org/r/6ec1d4fb8db2a1d7ba94c73e65d9770371b7857d.1727961605.git.manos.pitsidianakis@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-11 12:32:17 +02:00
Manos Pitsidianakis
dc43b18d2e meson.build: add HAVE_GLIB_WITH_ALIGNED_ALLOC flag
Rust crates, introduced from the next commit onwards, can optionally use
the glib allocator API and need to know whether g_aligned_alloc etc are
available.

This commit adds a define in config_host_data that depends on glib
version >= 2.72.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Link: https://lore.kernel.org/r/23f7b0cc9801d315f5d7835e30d775e133ec2fb9.1727961605.git.manos.pitsidianakis@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-11 12:32:17 +02:00
Manos Pitsidianakis
6fdc5bc173 rust: add bindgen step as a meson dependency
Add bindings_rs target for generating rust bindings to target-independent
qemu C APIs.

The bindings need be created before any rust crate that uses them is
compiled.

The bindings.rs file will end up in BUILDDIR/bindings.rs and have the
same name as a target:

  ninja bindings.rs

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Link: https://lore.kernel.org/r/1be89a27719049b7203eaf2eca8bbb75b33f18d4.1727961605.git.manos.pitsidianakis@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-11 12:32:17 +02:00
Paolo Bonzini
1a6ef6ff62 configure, meson: detect Rust toolchain
Include the correct path and arguments to rustc in the native
and cross files (native compilation is needed for procedural
macros).

Based on the host architecture and OS, the compiler and optionally the argument
to --cpu, the Rust target triple can be detected automatically for either a
native or a cross compiler.

In general, it is only a matter of translating the architecture and OS, and
adding a machine to form the triple, but there are some special cases (e.g.
detecting soft vs. hard floating point on ARM) and some inconsistencies.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Link: https://lore.kernel.org/r/207d2640b32d511e9c27478ce3192f5bb0bf3169.1727961605.git.manos.pitsidianakis@linaro.org
[Leave disabled by default until CI covers the Rust code on supported
 distros. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-11 12:32:17 +02:00
Michael Vogt
9729930344 linux-user: add strace support for openat2
This commit adds support for the `openat2()` to `QEMU_STRACE`. It
will use the `openat2.h` header if available to create user
readable flags for the `resolve` argument but does not require
the header otherwise.

It also makes `copy_struct_from_user()` available via `qemu.h`
and `open_how_ver0` via `syscall_defs.h` so that strace.c can use
them.

Signed-off-by: Michael Vogt <mvogt@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <f02d40c7751c03af885ced6dd94e4734d4be4d8f.1727795334.git.mvogt@redhat.com>
[rth: Add braces around the expanded how structure, like strace(3)]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-08 06:31:36 -07:00
Manos Pitsidianakis
764a6ee9fe build-sys: Add rust feature option
Add rust feature in meson.build, configure, to prepare for adding Rust
code in the followup commits.

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Link: https://lore.kernel.org/r/14642d80fbccbc60f7aa78b449a7deb5e2784ed9.1727961605.git.manos.pitsidianakis@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-07 16:41:58 +02:00
Paolo Bonzini
07f0d32641 Require meson version 1.5.0
This is needed for Rust support.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Link: https://lore.kernel.org/r/74e1eb4b13717d061c5ad9c198bf56951fbfc14f.1727961605.git.manos.pitsidianakis@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-07 16:41:57 +02:00
Philippe Mathieu-Daudé
c700d06819 disas: Remove CRIS disassembler
We just removed the CRIS target, the disassembler is now dead code.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240904143603.52934-15-philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-10-07 11:33:20 +02:00
Paolo Bonzini
ed76671888 9p: remove 'proxy' filesystem backend driver
It has been deprecated since 8.1; remove it and suggest using the 'local' file
system backend driver instead or virtiofsd.

Acked-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-03 19:33:25 +02:00
Xianglai Li
b883fb93db roms: Support compile the efi bios for loongarch
Added loongarch UEFI BIOS support to compiled scripts.

  UEFI code images require 16M alignment, flash images require
16M alignment, under the loongarch architecture.This is agreed
upon when the firmware is loaded in QEMU under Loongarch.

  The naming of UEFI under loongarch refers to the x86 and arm naming methods,
and the UEFI image names in x86 and arm are:
edk2-i386-code.fd
edk2-i386-vars.fd
edk2-arm-code.fd
edk2-arm-vars.fd
So on loongarch, we named it:
edk2-loongarch64-code.fd
edk2-loongarch64-vars.fd

Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Message-ID: <20240724022245.1317884-1-lixianglai@loongson.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2024-09-17 10:26:26 +02:00
Richard Henderson
db770a206c meson: Move -fsanitize=undefined into normal configuraton
With 8e466dd092 and 23ef50ae2d, we disable function pointer
sanitization in CI because the qemu code base does not support it.
We must disable this for normal usage of --enable-ubsan as well,
so move it there.

Append options rather than prepend, since all of this requires
proper ordering of options.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20240813095216.306555-3-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-09-11 09:49:11 +02:00
Richard Henderson
cb771ac1f5 meson: Split --enable-sanitizers to --enable-{asan, ubsan}
We do not always want both address and undefined behavior
sanitizers running at the same time.

For the gitlab custom-runners, drop to only --enable-ubsan.
These jobs are not run by default, but as will be obvious in the
next patch, we don't run ASan on x86 either, and it seems wrong
to hold aarch64 and s390x to a different standard.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20240813095216.306555-2-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-09-11 09:49:11 +02:00
Bryan Zhang
e28ed313c2 meson: Introduce 'qatzip' feature to the build system
Add a 'qatzip' feature, which is automatically disabled, and which
depends on the QATzip library if enabled.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Bryan Zhang <bryan.zhang@bytedance.com>
Signed-off-by: Hao Xiang <hao.xiang@linux.dev>
Signed-off-by: Yichen Wang <yichen.wang@bytedance.com>
Link: https://lore.kernel.org/r/20240830232722.58272-3-yichen.wang@bytedance.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-09-09 10:55:39 -04:00
Thomas Huth
e25264fe7b meson.build: Check for the availability of __attribute__((gcc_struct)) on MSYS2
Since quite a while MSYS2 now supports Clang as a compiler, too.
Unfortunately, this compiler is lacking the __attribute__((gcc_struct))
that we need for compiling on Windows. But since the compiler is
available now, some people started to use it to compile QEMU on MSYS2,
apparently ignoring the compiler warnings (see for example the ticket at
https://gitlab.com/qemu-project/qemu/-/issues/2476 ). These builds are
likely broken in a couple of spots, so let's make sure that we rather
bail out early in the configuration phase instead of allowing the build
to succeed with warnings.

Message-ID: <20240815122719.727639-1-thuth@redhat.com>
Tested-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-08-16 09:15:19 +02:00
Stefano Garzarella
547c4e5092 block/blkio: use FUA flag on write zeroes only if supported
libblkio supports BLKIO_REQ_FUA with write zeros requests only since
version 1.4.0, so let's inform the block layer that the blkio driver
supports it only in this case. Otherwise we can have runtime errors
as reported in https://issues.redhat.com/browse/RHEL-32878

Fixes: fd66dbd424 ("blkio: add libblkio block driver")
Cc: qemu-stable@nongnu.org
Buglink: https://issues.redhat.com/browse/RHEL-32878
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240808080545.40744-1-sgarzare@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2024-08-12 11:41:29 -04:00
Kevin Wolf
7e17111646 block/graph-lock: Make WITH_GRAPH_RDLOCK_GUARD() fully checked
Upstream clang 18 (and backports to clang 17 in Fedora and RHEL)
implemented support for __attribute__((cleanup())) in its Thread Safety
Analysis, so we can now actually have a proper implementation of
WITH_GRAPH_RDLOCK_GUARD() that understands when we acquire and when we
release the lock.

-Wthread-safety is now only enabled if the compiler is new enough to
understand this pattern. In theory, we could have used some #ifdefs to
keep the existing basic checks on old compilers, but as long as someone
runs a newer compiler (and our CI does), we will catch locking problems,
so it's probably not worth keeping multiple implementations for this.

The implementation can't use g_autoptr any more because the glib macros
define wrapper functions that don't have the right TSA attributes, so
the compiler would complain about them. Just use the cleanup attribute
directly instead.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20240627181245.281403-3-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2024-08-06 20:12:39 +02:00
Brad Smith
27fca0a0d5 util/cpuinfo: Make use of elf_aux_info(3) on OpenBSD
Signed-off-by: Brad Smith <brad@comstyle.com>
Message-ID: <ZqXB_zz0fR1CpA7k@humpty.home.comstyle.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-30 07:59:23 +10:00
Daniel P. Berrangé
48fc887436 meson: build chardev trace files when have_block
The QSD depends on chardev code, and is built when have_tools is
true. This means conditionalizing chardev trace on have_system
is wrong, we need have_block which is set have_system || have_tools.

This latent bug was historically harmless because only the spice
chardev included tracing, which wasn't built in a !have_system
scenario.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2024-07-24 10:39:10 +01:00
Yao Zi
581b4cd5f1 meson.build: fix libgcrypt detection on system without libgcrypt-config
libgcrypt starts providing correct pkg-config configuration since 1.9,
in parallel with libgcrypt-config. Since 1.11 it may also stop
installing libgcrypt-config in some scenarios. Use the auto method for
detection of libgcrypt, in which meson will try both pkg-config and
libgcrypt-config.

Auto method for libgcrypt is supported by meson since 0.49.0, which is
higher than the version qemu requires.

Signed-off-by: Yao Zi <ziyao@disroot.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2024-07-24 10:39:10 +01:00
Philippe Mathieu-Daudé
dc37d1c56b crypto: Allow building with GnuTLS but without Libtasn1
We only use Libtasn1 in unit tests. As noted in commit d47b83b118
("tests: add migration tests of TLS with x509 credentials"), having
GnuTLS without Libtasn1 is a valid configuration, so do not require
Libtasn1, to avoid:

  Dependency gnutls found: YES 3.7.1 (cached)
  Run-time dependency libtasn1 found: NO (tried pkgconfig)

  ../meson.build:1914:10: ERROR: Dependency "libtasn1" not found, tried pkgconfig

Fixes: ba7ed407e6 ("configure, meson: convert libtasn1 detection to meson")
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>
2024-07-24 10:39:10 +01:00
Richard Henderson
43f59bf765 * target/i386/kvm: support for reading RAPL MSRs using a helper program
* hpet: emulation improvements
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* target/i386/kvm: support for reading RAPL MSRs using a helper program
* hpet: emulation improvements

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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  hpet: avoid timer storms on periodic timers
  hpet: store full 64-bit target value of the counter
  hpet: accept 64-bit reads and writes
  hpet: place read-only bits directly in "new_val"
  hpet: remove unnecessary variable "index"
  hpet: ignore high bits of comparator in 32-bit mode
  hpet: fix and cleanup persistence of interrupt status
  Add support for RAPL MSRs in KVM/Qemu
  tools: build qemu-vmsr-helper
  qio: add support for SO_PEERCRED for socket channel
  target/i386: do not crash if microvm guest uses SGX CPUID leaves

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-24 11:25:40 +10:00
Anthony Harivel
84369d7621 tools: build qemu-vmsr-helper
Introduce a privileged helper to access RAPL MSR.

The privileged helper tool, qemu-vmsr-helper, is designed to provide
virtual machines with the ability to read specific RAPL (Running Average
Power Limit) MSRs without requiring CAP_SYS_RAWIO privileges or relying
on external, out-of-tree patches.

The helper tool leverages Unix permissions and SO_PEERCRED socket
options to enforce access control, ensuring that only processes
explicitly requesting read access via readmsr() from a valid Thread ID
can access these MSRs.

The list of RAPL MSRs that are allowed to be read by the helper tool is
defined in rapl-msr-index.h. This list corresponds to the RAPL MSRs that
will be supported in the next commit titled "Add support for RAPL MSRs
in KVM/QEMU."

The tool is intentionally designed to run on the Linux x86 platform.
This initial implementation is tailored for Intel CPUs but can be
extended to support AMD CPUs in the future.

Signed-off-by: Anthony Harivel <aharivel@redhat.com>
Link: https://lore.kernel.org/r/20240522153453.1230389-3-aharivel@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-07-22 13:50:21 +02:00
Daniel P. Berrangé
4be55a4fce qga: conditionalize schema for commands not supported on other UNIX
Rather than creating stubs for every command that just return
QERR_UNSUPPORTED, use 'if' conditions in the QAPI schema  to
fully exclude generation of the commands on other UNIX.

The command will be rejected at QMP dispatch time instead,
avoiding reimplementing rejection by blocking the stub commands.
This changes the error message for affected commands from

    {"class": "CommandNotFound", "desc": "Command FOO has been disabled"}

to

    {"class": "CommandNotFound", "desc": "The command FOO has not been found"}

This has the additional benefit that the QGA protocol reference
now documents what conditions enable use of the command.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-ID: <20240712132459.3974109-18-berrange@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
2024-07-19 11:50:35 +03:00
Daniel P. Berrangé
4bb3da4b14 qga: move CONFIG_FSFREEZE/TRIM to be meson defined options
Defining these at the meson level allows them to be used a conditional
tests in the QAPI schemas.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240712132459.3974109-8-berrange@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
2024-07-19 11:50:35 +03:00
Akihiko Odaki
d2277f02b8 ui/cocoa: Add cursor composition
Add accelerated cursor composition to ui/cocoa. This does not only
improve performance for display devices that exposes the capability to
the guest according to dpy_cursor_define_supported(), but fixes the
cursor display for devices that unconditionally expects the availability
of the capability (e.g., virtio-gpu).

The common pattern to implement accelerated cursor composition is to
replace the cursor and warp it so that the replaced cursor is shown at
the correct position on the guest display for relative pointer devices.
Unfortunately, ui/cocoa cannot do the same because warping the cursor
position interfers with the mouse input so it uses CALayer instead;
although it is not specialized for cursor composition, it still can
compose images with hardware acceleration.

Co-authored-by: Phil Dennis-Jordan <phil@philjordan.eu>
Tested-by: Phil Dennis-Jordan <phil@philjordan.eu>
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-ID: <20240715-cursor-v3-3-afa5b9492dbf@daynix.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-07-16 20:04:08 +02:00
Richard Henderson
5915139aba * meson: Pass objects and dependencies to declare_dependency(), not static_library()
* meson: Drop the .fa library suffix
 * target/i386: drop AMD machine check bits from Intel CPUID
 * target/i386: add avx-vnni-int16 feature
 * target/i386: SEV bugfixes
 * target/i386: SEV-SNP -cpu host support
 * char: fix exit issues
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* meson: Pass objects and dependencies to declare_dependency(), not static_library()
* meson: Drop the .fa library suffix
* target/i386: drop AMD machine check bits from Intel CPUID
* target/i386: add avx-vnni-int16 feature
* target/i386: SEV bugfixes
* target/i386: SEV-SNP -cpu host support
* char: fix exit issues

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# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  target/i386/SEV: implement mask_cpuid_features
  target/i386: add support for masking CPUID features in confidential guests
  char-stdio: Restore blocking mode of stdout on exit
  target/i386: add avx-vnni-int16 feature
  i386/sev: Fallback to the default SEV device if none provided in sev_get_capabilities()
  i386/sev: Fix error message in sev_get_capabilities()
  target/i386: do not include undefined bits in the AMD topoext leaf
  target/i386: SEV: fix formatting of CPUID mismatch message
  target/i386: drop AMD machine check bits from Intel CPUID
  target/i386: pass X86CPU to x86_cpu_get_supported_feature_word
  meson: Drop the .fa library suffix
  Revert "meson: Propagate gnutls dependency"
  meson: Pass objects and dependencies to declare_dependency()
  meson: merge plugin_ldflags into emulator_link_args
  meson: move block.syms dependency out of libblock
  meson: move shared_module() calls where modules are already walked

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-04 09:16:07 -07:00
Richard Henderson
1406b7fc4b virtio: features,fixes
A bunch of improvements:
 - vhost dirty log is now only scanned once, not once per device
 - virtio and vhost now support VIRTIO_F_NOTIFICATION_DATA
 - cxl gained DCD emulation support
 - pvpanic gained shutdown support
 - beginning of patchset for Generic Port Affinity Structure
 - s3 support
 - friendlier error messages when boot fails on some illegal configs
 - for vhost-user, VHOST_USER_SET_LOG_BASE is now only sent once
 - part of vhost-user support for any POSIX system -
   not yet enabled due to qtest failures
 - sr-iov VF setup code has been reworked significantly
 - new tests, particularly for risc-v ACPI
 - bugfixes
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio: features,fixes

A bunch of improvements:
- vhost dirty log is now only scanned once, not once per device
- virtio and vhost now support VIRTIO_F_NOTIFICATION_DATA
- cxl gained DCD emulation support
- pvpanic gained shutdown support
- beginning of patchset for Generic Port Affinity Structure
- s3 support
- friendlier error messages when boot fails on some illegal configs
- for vhost-user, VHOST_USER_SET_LOG_BASE is now only sent once
- part of vhost-user support for any POSIX system -
  not yet enabled due to qtest failures
- sr-iov VF setup code has been reworked significantly
- new tests, particularly for risc-v ACPI
- bugfixes

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (85 commits)
  hw/pci: Replace -1 with UINT32_MAX for romsize
  pcie_sriov: Register VFs after migration
  pcie_sriov: Remove num_vfs from PCIESriovPF
  pcie_sriov: Release VFs failed to realize
  pcie_sriov: Reuse SR-IOV VF device instances
  pcie_sriov: Ensure VF function number does not overflow
  pcie_sriov: Do not manually unrealize
  hw/ppc/spapr_pci: Do not reject VFs created after a PF
  hw/ppc/spapr_pci: Do not create DT for disabled PCI device
  hw/pci: Rename has_power to enabled
  virtio-iommu: Clear IOMMUDevice when VFIO device is unplugged
  virtio: remove virtio_tswap16s() call in vring_packed_event_read()
  hw/cxl/events: Mark cxl-add-dynamic-capacity and cxl-release-dynamic-capcity unstable
  hw/cxl/events: Improve QMP interfaces and documentation for add/release dynamic capacity.
  tests/data/acpi/rebuild-expected-aml.sh: Add RISC-V
  pc-bios/meson.build: Add support for RISC-V in unpack_edk2_blobs
  meson.build: Add RISC-V to the edk2-target list
  tests/data/acpi/virt: Move ARM64 ACPI tables under aarch64/${machine} path
  tests/data/acpi: Move x86 ACPI tables under x86/${machine} path
  tests/qtest/bios-tables-test.c: Set "arch" for x86 tests
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-03 20:54:17 -07:00
Sunil V L
008115bba0 meson.build: Add RISC-V to the edk2-target list
so that ACPI table test can be supported.

Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20240625150839.1358279-12-sunilvl@ventanamicro.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-07-03 18:14:07 -04:00
Richard Henderson
e57173085a util/cpuinfo-riscv: Use linux __riscv_hwprobe syscall
With recent linux kernels, there is a syscall to probe for various
ISA extensions.  These bits were phased in over several kernel
releases, so we still require checks for symbol availability.

Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-03 10:24:12 -07:00
Paolo Bonzini
4408155ac5 meson: Drop the .fa library suffix
The non-standard .fa library suffix breaks the link source
de-duplication done by Meson so drop it.

The lack of link source de-duplication causes AddressSanitizer to
complain ODR violations, and makes GNU ld abort when combined with
clang's LTO.

Fortunately, the non-standard suffix is not necessary anymore for
two reasons.

First, the non-standard suffix was necessary for fork-fuzzing.
Meson wraps all standard-suffixed libraries with --start-group and
--end-group. This made a fork-fuzz.ld linker script wrapped as well and
broke builds. Commit d2e6f9272d ("fuzz: remove fork-fuzzing
scaffolding") dropped fork-fuzzing so we can now restore the standard
suffix.

Second, the libraries are not even built anymore, because it is
possible to just use the object files directly via extract_all_objects().

The occurences of the suffix were detected and removed by performing
a tree-wide search with 'fa' and .fa (note the quotes and dot).

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-ID: <20240524-xkb-v4-4-2de564e5c859@daynix.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-07-03 18:41:26 +02:00
Akihiko Odaki
7b1070a7e1 Revert "meson: Propagate gnutls dependency"
This reverts commit 3eacf70bb5.

It was only needed because of duplicate objects caused by
declare_dependency(link_whole: ...), and can be dropped now
that meson.build specifies objects and dependencies separately
for the internal dependencies.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-ID: <20240524-objects-v1-2-07cbbe96166b@daynix.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-07-03 18:41:26 +02:00
Akihiko Odaki
414b180d42 meson: Pass objects and dependencies to declare_dependency()
We used to request declare_dependency() to link_whole static libraries.
If a static library is a thin archive, GNU ld keeps all object files
referenced by the archive open, and sometimes exceeds the open file limit.

Another problem with link_whole is that suboptimal handling of nested
dependencies.

link_whole by itself does not propagate dependencies. In particular,
gnutls, a dependency of crypto, is not propagated to its users, and we
currently workaround the issue by declaring gnutls as a dependency for
each crypto user.  On the other hand, if you write something like

  libfoo = static_library('foo', 'foo.c', dependencies: gnutls)
  foo = declare_dependency(link_whole: libfoo)

  libbar = static_library('bar', 'bar.c', dependencies: foo)
  bar = declare_dependency(link_whole: libbar, dependencies: foo)
  executable('prog', sources: files('prog.c'), dependencies: [foo, bar])

hoping to propagate the gnutls dependency into bar.c, you'll see a
linking failure for "prog", because the foo.c.o object file is included in
libbar.a and therefore it is linked twice into "prog": once from libfoo.a
and once from libbar.a.  Here Meson does not see the duplication, it
just asks the linker to link all of libfoo.a and libbar.a into "prog".

Instead of using link_whole, extract objects included in static libraries
and pass them to declare_dependency(); and then the dependencies can be
added as well so that they are propagated, because object files on the
linker command line are always deduplicated.

This requires Meson 1.1.0 or later.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-ID: <20240524-objects-v1-1-07cbbe96166b@daynix.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-07-03 18:41:25 +02:00
Paolo Bonzini
e8f62689ac meson: move block.syms dependency out of libblock
In order to define libqemuutil symbols that are requested by block modules,
QEMU currently uses a combination of the "link_depends" argument of
libraries (which is propagated into dependencies, but not available in
dependencies) and the "link_args" argument of declare_dependency()
(which _is_ available in static_library, but probably not used for
historical reasons only).

Unfortunately the link_depends will not be propagated into the
"block" dependency if it is defined using
declare_dependency(objects: ...); and it is not possible to
add it directly to the dependency because the keyword argument
simply is not available.

The only solution, in order to switch to defining the dependency
without using "link_whole" (which has problems of its own, see
https://github.com/mesonbuild/meson/pull/8151#issuecomment-754796420),
is unfortunately to add the link_args and link_depends to the
executables directly; fortunately there is just four of them.

It is possible (and I will look into it) to add "link_depends"
to declare_dependency(), but it probably will be a while before
QEMU can use it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-07-03 18:41:25 +02:00
Paolo Bonzini
fae7a427c7 meson: move shared_module() calls where modules are already walked
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-07-03 18:41:01 +02:00