Hi Cathy, Thank you for the patch! Yet something to improve: [auto build test ERROR on kvm/linux-next] [also build test ERROR on tip/auto-latest linux/master linus/master v5.8-rc4 next-20200706] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Cathy-Zhang/Expose-new-features-for-intel-processor/20200706-070640 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next config: x86_64-rhel-7.6 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce (this is a W=1 build): # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from arch/x86/kvm/cpuid.c:21: arch/x86/kvm/cpuid.c: In function 'kvm_set_cpu_caps': arch/x86/kvm/cpuid.h:91:42: error: 'X86_FEATURE_SERIALIZE' undeclared (first use in this function); did you mean 'X86_FEATURE_RETPOLINE'? 91 | #define feature_bit(name) __feature_bit(X86_FEATURE_##name) | ^~~~~~~~~~~~ arch/x86/kvm/cpuid.c:55:11: note: in expansion of macro 'feature_bit' 55 | #define F feature_bit | ^~~~~~~~~~~ arch/x86/kvm/cpuid.c:345:3: note: in expansion of macro 'F' 345 | F(SERIALIZE) | F(TSX_LDTRK) | ^ arch/x86/kvm/cpuid.h:91:42: note: each undeclared identifier is reported only once for each function it appears in 91 | #define feature_bit(name) __feature_bit(X86_FEATURE_##name) | ^~~~~~~~~~~~ arch/x86/kvm/cpuid.c:55:11: note: in expansion of macro 'feature_bit' 55 | #define F feature_bit | ^~~~~~~~~~~ arch/x86/kvm/cpuid.c:345:3: note: in expansion of macro 'F' 345 | F(SERIALIZE) | F(TSX_LDTRK) | ^ >> arch/x86/kvm/cpuid.h:91:42: error: 'X86_FEATURE_TSX_LDTRK' undeclared (first use in this function); did you mean 'X86_FEATURE_TSC_ADJUST'? 91 | #define feature_bit(name) __feature_bit(X86_FEATURE_##name) | ^~~~~~~~~~~~ arch/x86/kvm/cpuid.c:55:11: note: in expansion of macro 'feature_bit' 55 | #define F feature_bit | ^~~~~~~~~~~ arch/x86/kvm/cpuid.c:345:18: note: in expansion of macro 'F' 345 | F(SERIALIZE) | F(TSX_LDTRK) | ^ vim +91 arch/x86/kvm/cpuid.h a0a2260c12d865 Sean Christopherson 2019-12-17 90 87382003e35559 Sean Christopherson 2019-12-17 @91 #define feature_bit(name) __feature_bit(X86_FEATURE_##name) 87382003e35559 Sean Christopherson 2019-12-17 92 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org