Re: [PATCH 3/3] rust: arch/um: Add support for CONFIG_RUST under x86_64 UML

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On Sat, 17 Dec 2022 at 05:48, David Gow <davidgow@xxxxxxxxxx> wrote:
>
> CONFIG_RUST currently supports x86_64, but does not support it under
> UML. With the previous patches applied, adding support is trivial:
> add CONFIG_HAVE_RUST to UML if X86_64 is set.
>
> The scripts/generate_rust_target.rs file already checks for
> CONFIG_X86_64, not CONFIG_X86, so is prepared for UML support.
>
> The Rust support does not currently support X86_32.
>
> Also, update the Rust architecture support documentation to not that
> this is being maintained: I intend to look after this as best I can.
>
> Signed-off-by: David Gow <davidgow@xxxxxxxxxx>
> ---
>  Documentation/rust/arch-support.rst | 2 ++
>  arch/um/Kconfig                     | 1 +
>  2 files changed, 3 insertions(+)
>
> diff --git a/Documentation/rust/arch-support.rst b/Documentation/rust/arch-support.rst
> index 6982b63775da..a526ca1c688b 100644
> --- a/Documentation/rust/arch-support.rst
> +++ b/Documentation/rust/arch-support.rst
> @@ -17,3 +17,5 @@ Architecture  Level of support  Constraints
>  ============  ================  ==============================================
>  ``x86``       Maintained        ``x86_64`` only.
>  ============  ================  ==============================================
> +``um``        Maintained        ``x86_64`` only.
> +============  ================  ==============================================
> diff --git a/arch/um/Kconfig b/arch/um/Kconfig
> index ad4ff3b0e91e..4db186f019ae 100644
> --- a/arch/um/Kconfig
> +++ b/arch/um/Kconfig
> @@ -28,6 +28,7 @@ config UML
>         select TRACE_IRQFLAGS_SUPPORT
>         select TTY # Needed for line.c
>         select HAVE_ARCH_VMAP_STACK
> +       select HAVE_RUST                        if X86_64
>
>  config MMU
>         bool
> --
> 2.39.0.314.g84b9a713c41-goog
>

Reviewed-by: Sergio González Collado <sergio.collado@xxxxxxxxx>




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