linux-kernel - Re: [PATCH v2 2/9] x86: objtool: use asm macro for better compiler decisions

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Message-ID: <201806051343.jOeEcDni%fengguang.wu@intel.com>
Date:   Tue, 5 Jun 2018 13:41:03 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Nadav Amit <namit@...are.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org, x86@...nel.org,
        Nadav Amit <namit@...are.com>,
        Christopher Li <sparse@...isli.org>,
        linux-sparse@...r.kernel.org
Subject: Re: [PATCH v2 2/9] x86: objtool: use asm macro for better compiler
 decisions

Hi Nadav,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.17 next-20180604]
[cannot apply to tip/x86/core]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Nadav-Amit/x86-macrofying-inline-asm-for-better-compilation/20180605-124313
config: c6x-evmc6678_defconfig (attached as .config)
compiler: c6x-elf-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=c6x 

All errors (new ones prefixed by >>):

   include/linux/compiler.h: Assembler messages:
>> include/linux/compiler.h:308: Error: Macro `annotate_unreachable' was already defined

vim +308 include/linux/compiler.h

   307	
 > 308	.macro ANNOTATE_UNREACHABLE counter:req
   309	.endm
   310	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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