Hi Li, Thank you for the patch! Yet something to improve: [auto build test ERROR on tip/sched/core] [also build test ERROR on vhost/linux-next v5.14-rc2 next-20210722] [cannot apply to kvm/queue] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Li-RongQing/KVM-Consider-SMT-idl... base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 031e3bd8986fffe31e1ddbf5264cccfe30c9abd7 config: s390-buildonly-randconfig-r003-20210722 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9625ca5b602616b2f5584e8a49ba93c52c141e40) 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 s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://github.com/0day-ci/linux/commit/df205655d183524ffe8547bcc0f230a6f... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Li-RongQing/KVM-Consider-SMT-idle-status-when-halt-polling/20210722-120700 git checkout df205655d183524ffe8547bcc0f230a6f3217566 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org