linux-kernel - Re: [PATCH v2 0/4] x86: stack alignment for boot code and clang

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Message-ID: <CAK7LNAQn74G3K5czGCXWqmZgqGrZ0OyNMMN0wcEprKTBPwFfpg@mail.gmail.com>
Date:   Wed, 14 Jun 2017 10:30:08 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        "H . J . Lu" <hjl.tools@...il.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Michal Marek <mmarek@...e.com>, X86 ML <x86@...nel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Michael Davidson <md@...gle.com>,
        Greg Hackmann <ghackmann@...gle.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Stephen Hines <srhines@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Arnd Bergmann <arnd@...db.de>,
        Bernhard Rosenkränzer 
        <Bernhard.Rosenkranzer@...aro.org>,
        Peter Foley <pefoley2@...oley.com>,
        Behan Webster <behanw@...verseincode.com>,
        Douglas Anderson <dianders@...omium.org>
Subject: Re: [PATCH v2 0/4] x86: stack alignment for boot code and clang

2017-06-14 8:08 GMT+09:00 Matthias Kaehlcke <mka@...omium.org>:
> This series fixes an issue with the stack of the x86 boot code not
> being aligned as intended. Further it adapts the Makefile to account
> for the fact that clang uses a different option to configure the
> stack alignment than gcc (-mstack-alignment=N vs
> -mpreferred-stack-boundary=N)
>
> Collaterally the series adds the new kbuild macros cc-option-raw and
> hostcc-option, it also reworks cc-option to make use of cc-option-raw.
>
> Matthias Kaehlcke (4):
>   kbuild: Add cc-option-raw macro
>   kbuild: Add hostcc-option macro
>   x86/build: Use cc-option-raw for boot code compiler options
>   x86/build: Specify stack alignment for clang
>
>  Makefile               |  2 +-
>  arch/x86/Makefile      | 33 +++++++++++++++++++++++++--------
>  scripts/Kbuild.include | 13 +++++++++++--
>  3 files changed, 37 insertions(+), 11 deletions(-)


I gave Acked-by to 1/4 and 2/4
so that the whole series can go to x86 tree.

Thanks!

-- 
Best Regards
Masahiro Yamada