linux-kernel - Re: [PATCH 0/3] Fix cross compiling x86 with clang

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Message-ID: <CAMj1kXHhdw2EDmsuM0KHXcbKVNSPjrYkTYELHGShDN5NhAkvOQ@mail.gmail.com>
Date:   Fri, 26 Mar 2021 09:43:00 +0100
From:   Ard Biesheuvel <ardb@...nel.org>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        X86 ML <x86@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-efi <linux-efi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH 0/3] Fix cross compiling x86 with clang

On Fri, 26 Mar 2021 at 01:04, Nathan Chancellor <nathan@...nel.org> wrote:
>
> Hi all,
>
> This series fixes cross compiling x86 with clang, which was initially
> brought up by John here:
>
> https://lore.kernel.org/r/cceb074c-861c-d716-5e19-834a8492f245@gmail.com/
>
> I have picked up that patch and added the same fix in a couple of other
> places where it is needed.
>
> I have tested this on an ARM based server with both defconfig and
> allmodconfig, where the build now passes.
>
> Please let me know if there are any problems.
>
> Cheers,
> Nathan
>
> John Millikin (1):
>   x86: Propagate $(CLANG_FLAGS) to $(REALMODE_FLAGS)
>
> Nathan Chancellor (2):
>   x86/boot: Add $(CLANG_FLAGS) to compressed KBUILD_CFLAGS
>   efi/libstub: Add $(CLANG_FLAGS) to x86 flags
>

Acked-by: Ard Biesheuvel <ardb@...nel.org>

>  arch/x86/Makefile                     | 1 +
>  arch/x86/boot/compressed/Makefile     | 1 +
>  drivers/firmware/efi/libstub/Makefile | 3 ++-
>  3 files changed, 4 insertions(+), 1 deletion(-)
>
>
> base-commit: 0d02ec6b3136c73c09e7859f0d0e4e2c4c07b49b
> --
> 2.31.0
>