linux-kernel - [PATCH 0/7] LLVM: make x86_64 kernel build with clang.

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Message-Id: <20170317001520.85223-1-md@google.com>
Date:   Thu, 16 Mar 2017 17:15:13 -0700
From:   Michael Davidson <md@...gle.com>
To:     Michal Marek <mmarek@...e.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Shaohua Li <shli@...nel.org>
Cc:     Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Matthias Kaehlcke <mka@...omium.org>, x86@...nel.org,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, linux-raid@...r.kernel.org,
        Michael Davidson <md@...gle.com>
Subject: [PATCH 0/7] LLVM: make x86_64 kernel build with clang.

This patch set is sufficient to get the x86_64 kernel to build
and boot correctly with clang-3.8 or greater.

The resulting build still has about 300 warnings, very few of
which appear to be significant. Most of them should be fixable
with some minor code refactoring although a few of them, such
as the complaints about implict conversions between enumerated
types may be candidates for just being disabled.

Michael Davidson (7):
  Makefile, LLVM: add -no-integrated-as to KBUILD_[AC]FLAGS
  Makefile, x86, LLVM: disable unsupported optimization flags
  x86, LLVM: suppress clang warnings about unaligned accesses
  x86, boot, LLVM: #undef memcpy etc in string.c
  x86, boot, LLVM: Use regparm=0 for memcpy and memset
  md/raid10, LLVM: get rid of variable length array
  crypto, x86, LLVM: aesni - fix token pasting

 Makefile                                |  4 ++++
 arch/x86/Makefile                       |  7 +++++++
 arch/x86/boot/copy.S                    | 15 +++++++++++++--
 arch/x86/boot/string.c                  |  9 +++++++++
 arch/x86/boot/string.h                  | 13 +++++++++++++
 arch/x86/crypto/aes_ctrby8_avx-x86_64.S |  7 ++-----
 drivers/md/raid10.c                     |  9 ++++-----
 7 files changed, 52 insertions(+), 12 deletions(-)

-- 
2.12.0.367.g23dc2f6d3c-goog