[kbuild-all] [tip:x86/seves 48/74] arch/x86/kernel/sev-es.o: warning: objtool: safe_stack_exc_vmm_communication()+0x209: unreachable instruction

CC: linux-kernel(a)vger.kernel.org CC: x86(a)kernel.org TO: Tom Lendacky <thomas.lendacky(a)amd.com&gt; CC: Borislav Petkov <bp(a)suse.de&gt; CC: Joerg Roedel <jroedel(a)suse.de&gt; tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/seves head: f5ed777586e08e09c4b6f1e87161a145ee1431cf commit: 0786138c78e79343c7b015d77507cbf9d5f15d00 [48/74] x86/sev-es: Add a Runtime #VC Exception Handler config: x86_64-randconfig-a004-20200911 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 0a5dc7effb191eff740e0e7ae7bd8e1f6bdb3ad9) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 0786138c78e79343c7b015d77507cbf9d5f15d00 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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