tree: https://git.kernel.org/pub/scm/virt/kvm/kvm.git master head: 988896bb61827345c6d074dd5f2af1b7b008193f commit: 988896bb61827345c6d074dd5f2af1b7b008193f [22/22] x86/kvm/fpu: Remove kvm_vcpu_arch.guest_supported_xcr0 config: i386-randconfig-a002 (https://download.01.org/0day-ci/archive/20220218/202202180700.dnGoHs4Z-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e) 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://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=988896bb618273... git remote add kvm https://git.kernel.org/pub/scm/virt/kvm/kvm.git git fetch --no-tags kvm master git checkout 988896bb61827345c6d074dd5f2af1b7b008193f # 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=i386 SHELL=/bin/bash 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 >>): static inline u64 kvm_guest_supported_xfd(struct kvm_vcpu *vcpu) ^ arch/x86/kvm/x86.c:2364:19: error: unused function 'gtod_is_based_on_tsc' [-Werror,-Wunused-function] static inline int gtod_is_based_on_tsc(int mode) ^ 2 errors generated. vim +/kvm_guest_supported_xfd +992 arch/x86/kvm/x86.c 991 993 { 994 return kvm_guest_supported_xcr0(vcpu) & XFEATURE_MASK_USER_DYNAMIC; 995 } 996 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org