From: Matthias Kaehlcke <mka@chromium.org>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H . Peter Anvin" <hpa@zytor.com>,
"H . J . Lu" <hjl.tools@gmail.com>,
David Woodhouse <dwmw2@infradead.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Michal Marek <mmarek@suse.com>
Cc: x86@kernel.org, linux-kbuild@vger.kernel.org,
linux-kernel@vger.kernel.org, Michael Davidson <md@google.com>,
Greg Hackmann <ghackmann@google.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Stephen Hines <srhines@google.com>,
Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
Bernhard.Rosenkranzer@linaro.org,
Peter Foley <pefoley2@pefoley.com>,
Behan Webster <behanw@converseincode.com>,
Douglas Anderson <dianders@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>
Subject: [PATCH v4 0/3] x86: stack alignment for boot code and clang
Date: Mon, 19 Jun 2017 11:37:54 -0700 [thread overview]
Message-ID: <20170619183757.124992-1-mka@chromium.org> (raw)
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 macro __cc-option and
refactors the macros cc-option and hostcc-option to make use of
__cc-option.
Matthias Kaehlcke (3):
kbuild: Add __cc-option macro
x86/build: Use __cc-option for boot code compiler options
x86/build: Specify stack alignment for clang
Makefile | 2 +-
arch/x86/Makefile | 33 +++++++++++++++++++++++++--------
scripts/Kbuild.include | 14 ++++++++++++--
scripts/Makefile.host | 6 ------
4 files changed, 38 insertions(+), 17 deletions(-)
--
2.13.1.518.g3df882009-goog
next reply other threads:[~2017-06-19 18:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-19 18:37 Matthias Kaehlcke [this message]
2017-06-19 18:37 ` [PATCH v4 1/3] kbuild: Add __cc-option macro Matthias Kaehlcke
2017-06-20 9:37 ` Masahiro Yamada
2017-06-19 18:37 ` [PATCH v4 2/3] x86/build: Use __cc-option for boot code compiler options Matthias Kaehlcke
2017-06-19 18:37 ` [PATCH v4 3/3] x86/build: Specify stack alignment for clang Matthias Kaehlcke
2017-06-19 20:17 ` hpa
2017-06-19 20:47 ` Matthias Kaehlcke
2017-06-20 9:20 ` Ingo Molnar
2017-06-20 17:37 ` Matthias Kaehlcke
2017-06-21 7:18 ` Ingo Molnar
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