(subset) Re: [PATCH v9 0/7] Rust bindings for gem shmem

["Danilo Krummrich" <dakr@kernel.org>]

On Mon Mar 16, 2026 at 10:16 PM CET, Lyude Paul wrote:

Applied to drm-rust-next, thanks!

> Asahi Lina (2):
>   rust: drm: gem: shmem: Add DRM shmem helper abstraction

    [ * DRM_GEM_SHMEM_HELPER is a tristate; when a module driver selects it,
        it becomes =m. The Rust kernel crate and its C helpers are always
        built into vmlinux and can't reference symbols from a module,
        causing link errors.

        Thus, add RUST_DRM_GEM_SHMEM_HELPER bool Kconfig that selects
        DRM_GEM_SHMEM_HELPER, forcing it built-in when Rust drivers need it;
        use cfg(CONFIG_RUST_DRM_GEM_SHMEM_HELPER) for the shmem module.

      * Add cfg_attr(not(CONFIG_RUST_DRM_GEM_SHMEM_HELPER), expect(unused))
        on pub(crate) use impl_aref_for_gem_obj and BaseObjectPrivate, so
        that unused warnings are suppressed when shmem is not enabled.

      * Enable const_refs_to_static (stabilized in 1.83) to prevent build
        errors with older compilers.

      * Use &raw const for bindings::drm_gem_shmem_vm_ops and add
        #[allow(unused_unsafe, reason = "Safe since Rust 1.82.0")].

      * Fix incorrect C Header path and minor spelling and formatting
        issues.

      * Drop shmem::Object::sg_table() as the current implementation is
        unsound.

        - Danilo ]

>
> Lyude Paul (5):
>   rust: drm: gem: Add raw_dma_resv() function

    [ Fix incorrect reference in safety comment. - Danilo ]