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* ci: enable RISC-V cross jobs

Browse source 
* rust: bump minimum supported version to 1.77
 * rust: enable uninlined_format_args lint
 * initial Emscripten support
 * small fixes
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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
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* 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>
This commit is contained in:
Stefan Hajnoczi 2025-05-07 16:10:59 -04:00
commit c5f122fdcc
78 changed files with 861 additions and 654 deletions
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2
docs/devel/build-system.rst
View file

@ -168,7 +168,7 @@ The required versions of the packages are stored in a configuration file
``pythondeps.toml``. The format is custom to QEMU, but it is documented
at the top of the file itself and it should be easy to understand. The
requirements should make it possible to use the version that is packaged
that is provided by supported distros.
by QEMU's supported distros.
When dependencies are downloaded, instead, ``configure`` uses a "known
good" version that is also listed in ``pythondeps.toml``. In this

38
docs/devel/rust.rst
View file

@ -71,36 +71,9 @@ Building Rust code with ``--enable-modules`` is not supported yet.
Supported tools
'''''''''''''''
QEMU supports rustc version 1.63.0 and newer. Notably, the following features
QEMU supports rustc version 1.77.0 and newer. Notably, the following features
are missing:
* ``core::ffi`` (1.64.0). Use ``std::os::raw`` and ``std::ffi`` instead.
* ``cast_mut()``/``cast_const()`` (1.65.0). Use ``as`` instead.
* "let ... else" (1.65.0). Use ``if let`` instead. This is currently patched
in QEMU's vendored copy of the bilge crate.
* Generic Associated Types (1.65.0)
* ``CStr::from_bytes_with_nul()`` as a ``const`` function (1.72.0).
* "Return position ``impl Trait`` in Traits" (1.75.0, blocker for including
the pinned-init create).
* ``MaybeUninit::zeroed()`` as a ``const`` function (1.75.0). QEMU's
``Zeroable`` trait can be implemented without ``MaybeUninit::zeroed()``,
so this would be just a cleanup.
* ``c"" literals`` (stable in 1.77.0). QEMU provides a ``c_str!()`` macro
to define ``CStr`` constants easily
* ``offset_of!`` (stable in 1.77.0). QEMU uses ``offset_of!()`` heavily; it
provides a replacement in the ``qemu_api`` crate, but it does not support
lifetime parameters and therefore ``&'a Something`` fields in the struct
may have to be replaced by ``NonNull<Something>``. *Nested* ``offset_of!``
was only stabilized in Rust 1.82.0, but it is not used.
* inline const expression (stable in 1.79.0), currently worked around with
associated constants in the ``FnCall`` trait.
@ -125,12 +98,6 @@ are missing:
__ https://github.com/rust-lang/rust/pull/125258
It is expected that QEMU will advance its minimum supported version of
rustc to 1.77.0 as soon as possible; as of January 2025, blockers
for that right now are Debian bookworm and 32-bit MIPS processors.
This unfortunately means that references to statics in constants will
remain an issue.
QEMU also supports version 0.60.x of bindgen, which is missing option
``--generate-cstr``. This option requires version 0.66.x and will
be adopted as soon as supporting these older versions is not necessary
@ -183,7 +150,6 @@ module status
``bitops`` complete
``callbacks`` complete
``cell`` stable
``c_str`` complete
``errno`` complete
``irq`` complete
``memory`` stable
@ -440,7 +406,7 @@ Adding dependencies
Generally, the set of dependent crates is kept small. Think twice before
adding a new external crate, especially if it comes with a large set of
dependencies itself. Sometimes QEMU only needs a small subset of the
functionality; see for example QEMU's ``assertions`` or ``c_str`` modules.
functionality; see for example QEMU's ``assertions`` module.
On top of this recommendation, adding external crates to QEMU is a
slightly complicated process, mostly due to the need to teach Meson how