[kbuild-all] [intel-tdx:guest 143/144] arch/x86/kernel/head_64.o: warning: objtool: verify_cpu()+0x4d: unreachable instruction

CC: linux-kernel(a)vger.kernel.org TO: Andi Kleen <ak(a)linux.intel.com&gt; CC: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy(a)linux.intel.com&gt; tree: https://github.com/intel/tdx.git guest head: 41fe88a1b3c28543f49fa6ed9e0e9b6650ed7614 commit: 4844d5297235bef6b92fe9d0649d2f066f623d5a [143/144] [REVERTME] x86/tdx: Add CONFIG option for KVM SDV workarounds config: x86_64-randconfig-a011-20211209 (https://download.01.org/0day-ci/archive/20211209/202112092243.McNUP2KL-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a) 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/4844d5297235bef6b92fe9d0649d2f066f623d5a git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx guest git checkout 4844d5297235bef6b92fe9d0649d2f066f623d5a # save the config file 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(a)intel.com&gt; All warnings (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org