Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753760AbdFMXJ6 (ORCPT ); Tue, 13 Jun 2017 19:09:58 -0400 Received: from mail-pg0-f45.google.com ([74.125.83.45]:34387 "EHLO mail-pg0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752643AbdFMXJ4 (ORCPT ); Tue, 13 Jun 2017 19:09:56 -0400 From: Matthias Kaehlcke To: Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , "H . J . Lu" , David Woodhouse , Masahiro Yamada , Michal Marek Cc: x86@kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, Michael Davidson , Greg Hackmann , Nick Desaulniers , Stephen Hines , Kees Cook , Arnd Bergmann , Bernhard.Rosenkranzer@linaro.org, Peter Foley , Behan Webster , Douglas Anderson , Matthias Kaehlcke Subject: [PATCH v2 0/4] x86: stack alignment for boot code and clang Date: Tue, 13 Jun 2017 16:08:50 -0700 Message-Id: <20170613230854.112282-1-mka@chromium.org> X-Mailer: git-send-email 2.13.1.518.g3df882009-goog Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 845 Lines: 22 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(-) -- 2.13.1.518.g3df882009-goog