Re: [PATCH] kbuild: fix Clang LTO with CONFIG_OBJTOOL=n

[Yonghong Song]

On 1/31/25 6:04 AM, Masahiro Yamada wrote:
> Since commit bede169618c6 ("kbuild: enable objtool for *.mod.o and
> additional kernel objects"), Clang LTO builds do not perform any
> optimizations when CONFIG_OBJTOOL is disable (e.g., for ARCH=arm64).
> This is because every LLVM bitcode file is immediately converted to
> ELF format before the object files are linked together.
>
> This commit fixes the breakage.
>
> Fixes: bede169618c6 ("kbuild: enable objtool for *.mod.o and additional kernel objects")
> Reported-by: Yonghong Song <yonghong.song@xxxxxxxxx>
> Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>

Thanks for the fix!

I tested x86_64 and arm64 for with and without lto, everything works fine. So

Tested-by: Yonghong Song <yonghong.song@xxxxxxxxx>