linux-kernel - [intel-tdx:guest-rebased 77/83] arch/x86/kernel/head_64.o: warning: objtool: verify

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Message-ID: <202204220440.BCSQowTi-lkp@intel.com>
Date:   Fri, 22 Apr 2022 04:05:10 +0800
From:   kernel test robot <lkp@...el.com>
To:     Andi Kleen <ak@...ux.intel.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
Subject: [intel-tdx:guest-rebased 77/83] arch/x86/kernel/head_64.o: warning:
 objtool: verify_cpu()+0x4d: unreachable instruction

tree:   https://github.com/intel/tdx.git guest-rebased
head:   4c095660b91dbdd18042456e395af0deeef93485
commit: 557120ad3fe964723adac78b3cbf4193c4327d78 [77/83] [REVERTME] x86/tdx: Add CONFIG option for KVM SDV workarounds
config: x86_64-randconfig-a002 (https://download.01.org/0day-ci/archive/20220422/202204220440.BCSQowTi-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
reproduce (this is a W=1 build):
        # https://github.com/intel/tdx/commit/557120ad3fe964723adac78b3cbf4193c4327d78
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest-rebased
        git checkout 557120ad3fe964723adac78b3cbf4193c4327d78
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/head_64.o: warning: objtool: verify_cpu()+0x4d: unreachable instruction

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp