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| author | Ashish Kalra <ashish.kalra@amd.com> | 2026-08-10 19:21:17 +0000 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2026-09-18 15:50:58 -0700 |
| commit | 1ee97d0f7b20e1f71bdb9edf5950c8751538180a (patch) | |
| tree | e76fd155e1e11a58f4aa5145ece56d3932bdcf33 /tools/perf/scripts/python | |
| parent | fd73f4a6659897191fa0d40695fe370925dd3780 (diff) | |
x86/cpufeatures: Add X86_FEATURE_RMPOPT feature flag
Add a flag indicating whether RMPOPT instruction is supported.
RMPOPT is a new instruction that reduces the performance overhead of RMP
checks for the hypervisor and non-SNP guests by allowing those checks to be
skipped when 1-GB memory regions are known to contain no SEV-SNP guest memory.
For more information on the RMPOPT instruction, see the AMD64 RMPOPT
technical documentation.
[ bp: Zap respective tools/ change. ]
Suggested-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://patch.msgid.link/39e9ee269a572c516a3f4e937bfe12d00697d5e6.1782841284.git.ashish.kalra@amd.com
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions