[intel-tdx:guest 125/127] arch/x86/kernel/head_64.o: warning: objtool: verify_cpu()+0x4d: unreachable instruction

[intel-tdx:guest 125/127] arch/x86/kernel/head_64.o: warning: objtool: verify_cpu()+0x4d: unreachable instruction

[kernel test robot]

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CC: linux-kernel@vger.kernel.org
TO: Andi Kleen <ak@linux.intel.com>
CC: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>

Hi Andi,

First bad commit (maybe != root cause):

tree:   https://github.com/intel/tdx.git guest
head:   10b6ec254ee65ec602a7c3efde66ac0ca545b4bc
commit: 9828794c4c0f3c199a3de72445711d19e162c971 [125/127] [REVERTME] x86/tdx: Add CONFIG option for KVM SDV workarounds
config: x86_64-randconfig-a005-20210928 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel/tdx/commit/9828794c4c0f3c199a3de72445711d19e162c971
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest
        git checkout 9828794c4c0f3c199a3de72445711d19e162c971
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross 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@intel.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, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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[intel-tdx:guest 125/127] arch/x86/kernel/head_64.o: warning: objtool: verify_cpu()+0x4d: unreachable instruction

[kernel test robot]

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CC: linux-kernel(a)vger.kernel.org
TO: Andi Kleen <ak@linux.intel.com>
CC: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>

Hi Andi,

First bad commit (maybe != root cause):

tree:   https://github.com/intel/tdx.git guest
head:   10b6ec254ee65ec602a7c3efde66ac0ca545b4bc
commit: 9828794c4c0f3c199a3de72445711d19e162c971 [125/127] [REVERTME] x86/tdx: Add CONFIG option for KVM SDV workarounds
config: x86_64-randconfig-a005-20210928 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel/tdx/commit/9828794c4c0f3c199a3de72445711d19e162c971
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest
        git checkout 9828794c4c0f3c199a3de72445711d19e162c971
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross 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@intel.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, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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