Hi Yang, Thank you for the patch! Yet something to improve: [auto build test ERROR on vhost/linux-next] [also build test ERROR on tip/auto-latest linus/master v5.7-rc4 next-20200505] [cannot apply to kvm/linux-next linux/master] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Yang-Weijiang/Introduce-support-for-guest-CET-feature/20200507-021021 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 54b35c066417d4856e9d53313f7e98b354274584) reproduce: 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 # 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: kbuild test robot All errors (new ones prefixed by >>): >> arch/x86/kvm/vmx/vmx.c:3026:26: error: use of undeclared identifier 'X86_FEATURE_SHSTK'; did you mean 'XFEATURE_SSE'? (guest_cpuid_has(vcpu, X86_FEATURE_SHSTK) || ^~~~~~~~~~~~~~~~~ XFEATURE_SSE arch/x86/include/asm/fpu/types.h:104:2: note: 'XFEATURE_SSE' declared here XFEATURE_SSE, ^ arch/x86/kvm/vmx/vmx.c:3027:25: error: use of undeclared identifier 'X86_FEATURE_IBT' guest_cpuid_has(vcpu, X86_FEATURE_IBT))); ^ arch/x86/kvm/vmx/vmx.c:7114:40: error: use of undeclared identifier 'XFEATURE_MASK_CET_USER' incpt = !is_cet_state_supported(vcpu, XFEATURE_MASK_CET_USER); ^ >> arch/x86/kvm/vmx/vmx.c:7119:40: error: use of undeclared identifier 'MSR_IA32_U_CET' vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_U_CET, MSR_TYPE_RW, ^ >> arch/x86/kvm/vmx/vmx.c:7121:40: error: use of undeclared identifier 'MSR_IA32_PL3_SSP' vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_PL3_SSP, MSR_TYPE_RW, ^ arch/x86/kvm/vmx/vmx.c:7124:40: error: use of undeclared identifier 'XFEATURE_MASK_CET_KERNEL' incpt = !is_cet_state_supported(vcpu, XFEATURE_MASK_CET_KERNEL); ^ >> arch/x86/kvm/vmx/vmx.c:7129:40: error: use of undeclared identifier 'MSR_IA32_S_CET' vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_S_CET, MSR_TYPE_RW, ^ >> arch/x86/kvm/vmx/vmx.c:7131:40: error: use of undeclared identifier 'MSR_IA32_PL0_SSP' vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_PL0_SSP, MSR_TYPE_RW, ^ >> arch/x86/kvm/vmx/vmx.c:7133:40: error: use of undeclared identifier 'MSR_IA32_PL1_SSP' vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_PL1_SSP, MSR_TYPE_RW, ^ >> arch/x86/kvm/vmx/vmx.c:7135:40: error: use of undeclared identifier 'MSR_IA32_PL2_SSP' vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_PL2_SSP, MSR_TYPE_RW, ^ arch/x86/kvm/vmx/vmx.c:7138:34: error: use of undeclared identifier 'X86_FEATURE_SHSTK'; did you mean 'XFEATURE_SSE'? incpt |= !guest_cpuid_has(vcpu, X86_FEATURE_SHSTK); ^~~~~~~~~~~~~~~~~ XFEATURE_SSE arch/x86/include/asm/fpu/types.h:104:2: note: 'XFEATURE_SSE' declared here XFEATURE_SSE, ^ >> arch/x86/kvm/vmx/vmx.c:7140:40: error: use of undeclared identifier 'MSR_IA32_INT_SSP_TAB' vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_INT_SSP_TAB, MSR_TYPE_RW, ^ arch/x86/kvm/vmx/vmx.c:7183:23: error: use of undeclared identifier 'XFEATURE_MASK_CET_KERNEL' if (supported_xss & (XFEATURE_MASK_CET_KERNEL | XFEATURE_MASK_CET_USER)) ^ arch/x86/kvm/vmx/vmx.c:7183:50: error: use of undeclared identifier 'XFEATURE_MASK_CET_USER' if (supported_xss & (XFEATURE_MASK_CET_KERNEL | XFEATURE_MASK_CET_USER)) ^ 14 errors generated. vim +3026 arch/x86/kvm/vmx/vmx.c 3022 3023 static bool is_cet_state_supported(struct kvm_vcpu *vcpu, u32 xss_states) 3024 { 3025 return ((supported_xss & xss_states) && > 3026 (guest_cpuid_has(vcpu, X86_FEATURE_SHSTK) || 3027 guest_cpuid_has(vcpu, X86_FEATURE_IBT))); 3028 } 3029 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org