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| author | Pawan Gupta <pawan.kumar.gupta@linux.intel.com> | 2022-05-19 20:27:08 -0700 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-05-21 12:14:30 +0200 |
| commit | 51802186158c74a0304f51ab963e7c2b3a2b046f (patch) | |
| tree | b7cb6c36bbc228d5f22cd3343297d3f601ec998c /tools/arch/x86/include/asm/cpufeatures.h | |
| parent | 4419470191386456e0b8ed4eb06a70b0021798a6 (diff) | |
| download | lwn-51802186158c74a0304f51ab963e7c2b3a2b046f.tar.gz lwn-51802186158c74a0304f51ab963e7c2b3a2b046f.zip | |
x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug
Processor MMIO Stale Data is a class of vulnerabilities that may
expose data after an MMIO operation. For more details please refer to
Documentation/admin-guide/hw-vuln/processor_mmio_stale_data.rst
Add the Processor MMIO Stale Data bug enumeration. A microcode update
adds new bits to the MSR IA32_ARCH_CAPABILITIES, define them.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'tools/arch/x86/include/asm/cpufeatures.h')
| -rw-r--r-- | tools/arch/x86/include/asm/cpufeatures.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/arch/x86/include/asm/cpufeatures.h b/tools/arch/x86/include/asm/cpufeatures.h index 73e643ae94b6..e17de69faa54 100644 --- a/tools/arch/x86/include/asm/cpufeatures.h +++ b/tools/arch/x86/include/asm/cpufeatures.h @@ -443,5 +443,6 @@ #define X86_BUG_TAA X86_BUG(22) /* CPU is affected by TSX Async Abort(TAA) */ #define X86_BUG_ITLB_MULTIHIT X86_BUG(23) /* CPU may incur MCE during certain page attribute changes */ #define X86_BUG_SRBDS X86_BUG(24) /* CPU may leak RNG bits if not mitigated */ +#define X86_BUG_MMIO_STALE_DATA X86_BUG(25) /* CPU is affected by Processor MMIO Stale Data vulnerabilities */ #endif /* _ASM_X86_CPUFEATURES_H */ |