The "Processor ignores nested data breakpoints" feature was being open-coded for KVM. Add the feature to its newly introduced CPUID leaf 0x80000021 EAX proper. Signed-off-by: Kim Phillips <kim.phillips@xxxxxxx> --- arch/x86/include/asm/cpufeatures.h | 3 +++ arch/x86/kvm/cpuid.c | 2 +- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index a84536876794..7f0fb894e432 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -428,6 +428,9 @@ #define X86_FEATURE_V_TSC_AUX (19*32+ 9) /* "" Virtual TSC_AUX */ #define X86_FEATURE_SME_COHERENT (19*32+10) /* "" AMD hardware-enforced cache coherency */ +/* AMD-defined Extended Feature 2 EAX, CPUID level 0x80000021 (EAX), word 20 */ +#define X86_FEATURE_NO_NESTED_DATA_BP (20*32+ 0) /* "" No Nested Data Breakpoints */ + /* * BUG word(s) */ diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 3930452bf06e..13bd2769fa5a 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -742,7 +742,7 @@ void kvm_set_cpu_caps(void) F(SME_COHERENT)); kvm_cpu_cap_mask(CPUID_8000_0021_EAX, - BIT(0) /* NO_NESTED_DATA_BP */ | 0 /* SmmPgCfgLock */ | + F(NO_NESTED_DATA_BP) | 0 /* SmmPgCfgLock */ | BIT(6) /* NULL_SEL_CLR_BASE */ | 0 /* PrefetchCtlMsr */ ); if (cpu_feature_enabled(X86_FEATURE_LFENCE_RDTSC)) -- 2.34.1
