Re: [PATCH v6 22/25] x86/asm: annotate indirect jumps

Kees Cook
2020-10-15T02:24:47Z

On Mon, Oct 12, 2020 at 05:32:00PM -0700, Sami Tolvanen wrote:
> Running objtool --vmlinux --duplicate on vmlinux.o produces a few
> warnings about indirect jumps with retpoline:
>
> vmlinux.o: warning: objtool: wakeup_long64()+0x61: indirect jump
> found in RETPOLINE build
> ...
>
> This change adds ANNOTATE_RETPOLINE_SAFE annotations to the jumps
> in assembly code to stop the warnings.
>
> Signed-off-by: Sami Tolvanen <samitolvanen@google.com>

Reviewed-by: Kees Cook <keescook@chromium.org>

This looks like it's an independent fix -- can an x86 maintainer pick
up this patch directly?

--
Kees Cook