[intel-tdx:guest-rebased 128/133] arch/x86/kernel/head_64.o: warning: objtool: verify_cpu()+0x4d: unreachable instruction

[intel-tdx:guest-rebased 128/133] arch/x86/kernel/head_64.o: warning: objtool: verify_cpu()+0x4d: unreachable instruction

[kernel test robot]

CC: linux-kernel@vger.kernel.org
TO: Andi Kleen <ak@linux.intel.com>
CC: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>

tree:   https://github.com/intel/tdx.git guest-rebased
head:   36c91f6d572820e8556972fd7644bd96798e85d6
commit: fc9eb9756100201dbc23d220d3441115866085c8 [128/133] [REVERTME] x86/tdx: Add CONFIG option for KVM SDV workarounds
config: x86_64-randconfig-a002-20220214 (https://download.01.org/0day-ci/archive/20220215/202202152337.dgk9Lm8b-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 37f422f4ac31c8b8041c6b62065263314282dab6)
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/fc9eb9756100201dbc23d220d3441115866085c8
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest-rebased
        git checkout fc9eb9756100201dbc23d220d3441115866085c8
        # 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@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