rust: add back to Ubuntu 22.04 jobs

Ubuntu is now including updated versions of Rust (up to 1.85) for
its LTS releases.  Adjust the CI containers and re-add --enable-rust
to the Ubuntu jobs.

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

.gitlab-ci.d/buildtest.yml

@@ -39,7 +39,7 @@ build-system-ubuntu:
     - job: amd64-ubuntu2204-container
   variables:
     IMAGE: ubuntu2204
-    CONFIGURE_ARGS: --enable-docs
+    CONFIGURE_ARGS: --enable-docs --enable-rust
     TARGETS: alpha-softmmu microblazeel-softmmu mips64el-softmmu
     MAKE_CHECK_ARGS: check-build
 

docs/about/build-platforms.rst

@@ -117,14 +117,14 @@ Rust build dependencies
   a newer version using ``cargo install bindgen-cli``.
 
   QEMU requires Rust 1.83.0.  This is available on all supported platforms
-  with two exception: Ubuntu LTS releases 22.04 and 24.04, and the
-  ``mips64el`` architecture on Debian bookworm.  For all other
+  except for the ``mips64el`` architecture on Debian bookworm.  For all other
   architectures, Debian bookworm provides a new-enough Rust compiler
   in the ``rustc-web`` package.
 
-  It is expected that in the future Ubuntu will provide updated packages
-  like the existing ``rustc-1.82`` package.  The path to ``rustc`` and
-  ``rustdoc`` will have to be provided manually to the configure script.
+  For Ubuntu 22.04 ("Jammy") and 24.04 ("Noble") updated versions of
+  Rust are available through packages such as ``rustc-1.83`` package;
+  the path to ``rustc`` and ``rustdoc`` has to be provided manually to
+  the configure script.
 
   Some distros prefer to avoid vendored crate sources, and instead use
   local sources from e.g. ``/usr/share/cargo/registry``.  QEMU includes a

scripts/ci/setup/ubuntu/ubuntu-2404-aarch64.yaml

@@ -119,7 +119,7 @@ packages:
   - python3-wheel
   - python3-yaml
   - rpm2cpio
-  - rustc-1.77
+  - rustc-1.83
   - sed
   - socat
   - sparse

scripts/ci/setup/ubuntu/ubuntu-2404-s390x.yaml

@@ -117,7 +117,7 @@ packages:
   - python3-wheel
   - python3-yaml
   - rpm2cpio
-  - rustc-1.77
+  - rustc-1.83
   - sed
   - socat
   - sparse

tests/docker/dockerfiles/ubuntu2204.docker

@@ -124,7 +124,7 @@ RUN export DEBIAN_FRONTEND=noninteractive && \
                       python3-wheel \
                       python3-yaml \
                       rpm2cpio \
-                      rustc-1.77 \
+                      rustc-1.83 \
                       sed \
                       socat \
                       sparse \
@@ -155,8 +155,8 @@ ENV LANG "en_US.UTF-8"
 ENV MAKE "/usr/bin/make"
 ENV NINJA "/usr/bin/ninja"
 ENV PYTHON "/usr/bin/python3"
-ENV RUSTC=/usr/bin/rustc-1.77
-ENV RUSTDOC=/usr/bin/rustdoc-1.77
+ENV RUSTC=/usr/bin/rustc-1.83
+ENV RUSTDOC=/usr/bin/rustdoc-1.83
 ENV CARGO_HOME=/usr/local/cargo
 ENV PATH=$CARGO_HOME/bin:$PATH
 RUN DEBIAN_FRONTEND=noninteractive eatmydata \

tests/lcitool/mappings.yml

@@ -70,8 +70,8 @@ mappings:
 
   rust:
     Debian12: rustc-web
-    Ubuntu2204: rustc-1.77
-    Ubuntu2404: rustc-1.77
+    Ubuntu2204: rustc-1.83
+    Ubuntu2404: rustc-1.83
 
 pypi_mappings:
   # Request more recent version

tests/lcitool/refresh

@@ -152,8 +152,8 @@ fedora_rustup_nightly_extras = [
 ]
 
 ubuntu2204_rust_extras = [
-    "ENV RUSTC=/usr/bin/rustc-1.77\n",
-    "ENV RUSTDOC=/usr/bin/rustdoc-1.77\n",
+    "ENV RUSTC=/usr/bin/rustc-1.83\n",
+    "ENV RUSTDOC=/usr/bin/rustdoc-1.83\n",
     "ENV CARGO_HOME=/usr/local/cargo\n",
     'ENV PATH=$CARGO_HOME/bin:$PATH\n',
     "RUN DEBIAN_FRONTEND=noninteractive eatmydata \\\n",