Hi Chenyi, Thank you for the patch! Yet something to improve: [auto build test ERROR on kvm/linux-next] [also build test ERROR on v5.11-rc2 next-20210108] [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/Chenyi-Qiang/Add-KVM-support-for-bus-lock-debug-exception/20210108-144848 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next config: i386-randconfig-r015-20210108 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/b1bac74da16aca55f4fb7f49c18849a5e3f66ae7 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Chenyi-Qiang/Add-KVM-support-for-bus-lock-debug-exception/20210108-144848 git checkout b1bac74da16aca55f4fb7f49c18849a5e3f66ae7 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from include/asm-generic/bug.h:5, from arch/x86/include/asm/bug.h:93, from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/percpu.h:5, from include/linux/context_tracking_state.h:5, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:7, from arch/x86/kvm/x86.c:19: arch/x86/kvm/x86.c: In function 'kvm_dr6_fixed': >> arch/x86/kvm/x86.c:1131:29: error: 'X86_FEATURE_BUS_LOCK_DETECT' undeclared (first use in this function); did you mean 'X86_FEATURE_SPLIT_LOCK_DETECT'? 1131 | if (!guest_cpuid_has(vcpu, X86_FEATURE_BUS_LOCK_DETECT)) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ arch/x86/kvm/x86.c:1131:2: note: in expansion of macro 'if' 1131 | if (!guest_cpuid_has(vcpu, X86_FEATURE_BUS_LOCK_DETECT)) | ^~ arch/x86/kvm/x86.c:1131:29: note: each undeclared identifier is reported only once for each function it appears in 1131 | if (!guest_cpuid_has(vcpu, X86_FEATURE_BUS_LOCK_DETECT)) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ arch/x86/kvm/x86.c:1131:2: note: in expansion of macro 'if' 1131 | if (!guest_cpuid_has(vcpu, X86_FEATURE_BUS_LOCK_DETECT)) | ^~ vim +1131 arch/x86/kvm/x86.c 1123 1124 static u64 kvm_dr6_fixed(struct kvm_vcpu *vcpu) 1125 { 1126 u64 fixed = DR6_FIXED_1; 1127 1128 if (!guest_cpuid_has(vcpu, X86_FEATURE_RTM)) 1129 fixed |= DR6_RTM; 1130 > 1131 if (!guest_cpuid_has(vcpu, X86_FEATURE_BUS_LOCK_DETECT)) 1132 fixed |= DR6_BUS_LOCK; 1133 return fixed; 1134 } 1135 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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