diff options
| author | Kim Phillips <kim.phillips@amd.com> | 2023-01-24 19:33:14 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-01-25 14:36:34 +0300 |
| commit | a9dc9ec5a1fafc3d2fe7a7b594eefaeaccf89a6b (patch) | |
| tree | 1b5bcfbc2c0518353bd3f81e72359820cbd0ad4c /arch/x86/include/asm/cpufeatures.h | |
| parent | c35ac8c4bf600ee23bacb20f863aa7830efb23fb (diff) | |
| download | linux-a9dc9ec5a1fafc3d2fe7a7b594eefaeaccf89a6b.tar.xz | |
x86/cpu, kvm: Add the NO_NESTED_DATA_BP feature
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@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20230124163319.2277355-4-kim.phillips@amd.com
Diffstat (limited to 'arch/x86/include/asm/cpufeatures.h')
| -rw-r--r-- | arch/x86/include/asm/cpufeatures.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index b89005819cd5..1b2d40a96b97 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -427,6 +427,9 @@ #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) */ |