linux-kernel - [PATCH 0/3] x86: stack alignment for boot code and clang

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Message-Id: <20170613005531.77656-1-mka@chromium.org>
Date:   Mon, 12 Jun 2017 17:55:28 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     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>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <mmarek@...e.com>
Cc:     x86@...nel.org, linux-kbuild@...r.kernel.org,
        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.Rosenkranzer@...aro.org,
        Peter Foley <pefoley2@...oley.com>,
        Behan Webster <behanw@...verseincode.com>,
        Douglas Anderson <dianders@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: [PATCH 0/3] x86: stack alignment for boot code and clang

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)

Matthias Kaehlcke (3):
  kbuild: Add cc-option-no-kbuild macro
  x86/build: Use cc-option-no-kbuild for boot code compiler options
  x86/build: Specify stack alignment for clang

 arch/x86/Makefile      | 25 +++++++++++++++++--------
 scripts/Kbuild.include |  5 +++++
 2 files changed, 22 insertions(+), 8 deletions(-)

-- 
2.13.1.508.gb3defc5cc-goog