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rust: arch/um: Add support for CONFIG_RUST under x86_64 UML

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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@google.com>
Reviewed-by: Sergio González Collado <sergio.collado@gmail.com>
Tested-by: Sergio González Collado <sergio.collado@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
David Gow 2022-12-17 12:44:36 +08:00 committed by Richard Weinberger
parent 8849818679
commit 0438aadfa6
2 changed files with 3 additions and 0 deletions
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2
Documentation/rust/arch-support.rst
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@ -17,3 +17,5 @@ Architecture Level of support Constraints
============ ================ ============================================== ============ ================ ==============================================
``x86`` Maintained ``x86_64`` only. ``x86`` Maintained ``x86_64`` only.
============ ================ ============================================== ============ ================ ==============================================
``um`` Maintained ``x86_64`` only.
============ ================ ==============================================

1
arch/um/Kconfig
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@ -28,6 +28,7 @@ config UML
select TRACE_IRQFLAGS_SUPPORT select TRACE_IRQFLAGS_SUPPORT
select TTY # Needed for line.c select TTY # Needed for line.c
select HAVE_ARCH_VMAP_STACK select HAVE_ARCH_VMAP_STACK
select HAVE_RUST if X86_64
config MMU config MMU
bool bool