diff options
| author | Kan Liang <kan.liang@linux.intel.com> | 2023-01-04 12:13:44 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-01-09 12:22:08 +0100 |
| commit | a018d2e3d4b1abc4a3cb64415c5d204fc5d2eafd (patch) | |
| tree | a728c5c449198e5328c1f349ce31e707508fd57e /arch/x86/events | |
| parent | c87a31093c707eb0b8c48aab89922c1d0bf4bd90 (diff) | |
x86/cpufeatures: Add Architectural PerfMon Extension bit
CPUID.(EAX=07H, ECX=1):EAX[8] indicates whether the Architectural
PerfMon Extension leaf (CPUID leaf 23) is supported.
The "X86_FEATURE_..., word 12" is already mirrored from CPUID
"0x00000007:1 (EAX)". Add X86_FEATURE_ARCH_PERFMON_EXT under the
"word 12" section.
The new Architectural PerfMon Extension leaf (CPUID leaf 23) will be
supported in the perf_events subsystem later.
The feature will not appear in /proc/cpuinfo.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230104201349.1451191-4-kan.liang@linux.intel.com
Diffstat (limited to 'arch/x86/events')
0 files changed, 0 insertions, 0 deletions