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| author | Pawan Gupta <pawan.kumar.gupta@linux.intel.com> | 2025-03-11 08:03:08 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-03-19 11:17:23 +0100 |
| commit | 722fa0dba74f206999244facb177a8bfe3d513e6 (patch) | |
| tree | 255772494e27df311e8e918e5917711ae7536009 /tools/perf/scripts/python/bin | |
| parent | x86/cpu: Update x86_match_cpu() to also use cpu-type (diff) | |
| download | linux-722fa0dba74f206999244facb177a8bfe3d513e6.tar.gz linux-722fa0dba74f206999244facb177a8bfe3d513e6.zip | |
x86/rfds: Exclude P-only parts from the RFDS affected list
The affected CPU table (cpu_vuln_blacklist) marks Alderlake and Raptorlake
P-only parts affected by RFDS. This is not true because only E-cores are
affected by RFDS. With the current family/model matching it is not possible
to differentiate the unaffected parts, as the affected and unaffected
hybrid variants have the same model number.
Add a cpu-type match as well for such parts so as to exclude P-only parts
being marked as affected.
Note, family/model and cpu-type enumeration could be inaccurate in
virtualized environments. In a guest affected status is decided by RFDS_NO
and RFDS_CLEAR bits exposed by VMMs.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/r/20250311-add-cpu-type-v8-5-e8514dcaaff2@linux.intel.com
Diffstat (limited to 'tools/perf/scripts/python/bin')
0 files changed, 0 insertions, 0 deletions