On Sat, Dec 27, 2025 at 7:33 AM <[email protected]> wrote:
>
> From: Harish Sadineni <[email protected]>
>
> This patch series introduces Rust support into the linux-yocto kernel recipe
> and related build infrastructure in the Yocto Project. The goal is to enable
> building the Linux kernel with Rust components and provide support for
> building
> kernel module which is written in rust and also provide support to build
> rust kernel modules in sdk.
>
> And this series adds test for Linux Rust sample and also added support for
> out-of-tree kernel
> module written in Rust as well as associated test.
What are the changes in this version compared to the last ?
I didn't get a chance to look at the previous series in detail, but will look
at this one. Knowing what was done in the different iterations is
helpful in guiding what I look at.
Bruce
>
> Summary of patches:
>
> - Patch 01: Extend 'bindgen-cli' to support 'nativesdk', allowing it to be
> available in the SDK environment.
> - Patch 02: Add required dependencies ('clang-native', 'rust-native',
> 'bindgen-cli-native') to the kernel to support Rust binding generation.
> - Patch 03: Install the Rust standard library source ('library/') into
> `work-shared` and which will be later copied to
> linux-yocto recipe-sysroot-native.
> - Patch 04: Added 'rust-kernel' to DISTRO_FEATURES_FILTER_NATIVE and
> DISTRO_FEATURES_FILTER_NATIVESDK, the 'rust-kernel' feature automatically
> propagates from target DISTRO_FEATURES to native/nativesdk builds
> - Patch 05: Stage the Rust sources into `recipe-sysroot-native` for kernel
> build compatibility, making them visible during native builds.
> - Patch 06: Update `kernel-yocto.bbclass` to invoke `make rustavailable`
> during 'do_kernel_configme', ensuring Rust readiness.
> - Patch 07: Add kernel configuration support for Rust (via
> 'kernel-rust.scc'), enabling the Rust build options in kernel config.
> - Patch 08: Fixed buildpaths errors when rust is enabled for kernel by
> appending --remap-path-prefix to RUST_DEBUG_REMAP
> - Patch 09: Disabling ccache when rust-kernel is enabled for linux-yocto.
> - Patch 10: Copy Rust kernel sources into kernel-devsrc build directory which
> will be required while running 'make prepare' in sdk.
> - Patch 11: Added oe-selftest case for the Linux Rust sample.
> - patch 12: Copying include/config/auto.conf in STAGING_KERNEL_BUILDDIR
> - patch 13: Export artifacts needed for out-of-tree Rust compilation
> - patch 14: Prepare out-of-tree rust module compilation
> - patch 15: Added rust-out-of-tree-module recipe in meta-skeleton layer
> - patch 16: Added rust-out-of-tree selftest
>
> Patches have been build-tested successfully on:
> - qemuarm64
> - qemux86-64
>
> Benchmark test-result for x86-64:
> +-------------------------------+------------+-----------+-----------+-----------+
> | DISTRO_FEATURES | real | user | sys | FS
> usage |
> +-------------------------------+------------+-----------+-----------+-----------+
> | rust-kernel (enabled) | 46m1.720s | 0m28.864s | 0m3.696s | 58
> GB |
> | rust-kernel (disabled) | 30m1.053s | 0m20.091s | 0m2.748s | 33
> GB |
> +-------------------------------+------------+-----------+-----------+-----------+
>
> The increased in time & fs is due to kernel rust dependencies in
> linux-yocto.
>
>
> Harish Sadineni (9):
> bindgen-cli: extend BBCLASSEXTEND to include nativesdk
> linux-yocto: conditionally add clang/rust/bindgen-cli-native to
> DEPENDS
> rust: install Rust library sources for 'make rustavailable' support
> bitbake.conf: Include "rust-kernel" in native/nativesdk feature
> filters
> kernel-yocto: stage rustlib sources for linux-yocto 'make
> rustavailable' support
> kernel-yocto: add rust support via "make rustavailable" in
> do_kernel_configme
> linux-yocto: enable Rust support in kernel configuration
> kernel-yocto: Fix for buildpaths errors when rust is enabled for
> kernel
> kernel-devsrc: copying rust-kernel source to $kerneldir/build
>
> Yoann Congal (7):
> kernel-yocto.bbclass: Disable ccache when rust-kernel is enabled
> selftest/cases/runtime_test: Add test for Linux Rust sample
> kernel.bbclass: Copy include/config/auto.conf in
> STAGING_KERNEL_BUILDDIR
> kernel.bbclass: Export artifacts needed for out-of-tree Rust
> compilation
> module.bbclass: Prepare out-of-tree rust module compilation
> meta-skeleton: Add rust-out-of-tree-module recipe
> runtime_test: Add rust-out-of-tree selftest
>
> .../rust-out-of-tree-module_git.bb | 18 ++++++++++
> meta/classes-recipe/kernel-yocto.bbclass | 28 +++++++++++++++
> meta/classes-recipe/kernel.bbclass | 19 ++++++++++
> meta/classes-recipe/module.bbclass | 8 +++++
> meta/conf/bitbake.conf | 4 +--
> meta/lib/oeqa/selftest/cases/runtime_test.py | 35 +++++++++++++++++++
> .../bindgen-cli/bindgen-cli_0.72.1.bb | 2 +-
> meta/recipes-devtools/rust/rust_1.91.1.bb | 17 +++++++++
> meta/recipes-kernel/linux/kernel-devsrc.bb | 4 +++
> meta/recipes-kernel/linux/linux-yocto.inc | 2 ++
> meta/recipes-kernel/linux/linux-yocto_6.16.bb | 1 +
> meta/recipes-kernel/linux/linux-yocto_6.18.bb | 1 +
> 12 files changed, 136 insertions(+), 3 deletions(-)
> create mode 100644
> meta-skeleton/recipes-kernel/rust-out-of-tree-module/rust-out-of-tree-module_git.bb
>
> --
> 2.49.0
>
--
- Thou shalt not follow the NULL pointer, for chaos and madness await
thee at its end
- "Use the force Harry" - Gandalf, Star Trek II
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