Miguel Ojeda 2d476222e8 Add -Zfunction-return={keep,thunk-extern} option ...

This is intended to be used for Linux kernel RETHUNK builds.

With this commit (optionally backported to Rust 1.73.0), plus a
patched Linux kernel to pass the flag, I get a RETHUNK build with
Rust enabled that is `objtool`-warning-free and is able to boot in
QEMU and load a sample Rust kernel module.

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

2023-11-30 20:21:31 +01:00

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requires-x86-or-x86_64.aarch64.stderr

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requires-x86-or-x86_64.rs

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thunk-extern-requires-non-large-code-model.large.stderr

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thunk-extern-requires-non-large-code-model.rs

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