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From: "tip-bot2 for Kan Liang" <tip-bot2@linutronix.de>
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To: linux-tip-commits@vger.kernel.org
Subject: [tip: perf/core] x86/cpufeatures: Add Architectural PerfMon Extension
bit
Cc: Kan Liang <kan.liang@linux.intel.com>,
Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>, x86@kernel.org,
linux-kernel@vger.kernel.org
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[tip:,perf/core] x86/cpufeatures: Add Architectural PerfMon Extension bit
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Commit Message
tip-bot2 for Thomas Gleixner
Jan. 9, 2023, 5:02 p.m. UTC
The following commit has been merged into the perf/core branch of tip: Commit-ID: a018d2e3d4b1abc4a3cb64415c5d204fc5d2eafd Gitweb: https://git.kernel.org/tip/a018d2e3d4b1abc4a3cb64415c5d204fc5d2eafd Author: Kan Liang <kan.liang@linux.intel.com> AuthorDate: Wed, 04 Jan 2023 12:13:44 -08:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Mon, 09 Jan 2023 12:22:08 +01:00 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 --- arch/x86/include/asm/cpufeatures.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 6101247..b64555b 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -312,6 +312,7 @@ #define X86_FEATURE_AVX_VNNI (12*32+ 4) /* AVX VNNI instructions */ #define X86_FEATURE_AVX512_BF16 (12*32+ 5) /* AVX512 BFLOAT16 instructions */ #define X86_FEATURE_CMPCCXADD (12*32+ 7) /* "" CMPccXADD instructions */ +#define X86_FEATURE_ARCH_PERFMON_EXT (12*32+ 8) /* "" Intel Architectural PerfMon Extension */ #define X86_FEATURE_AMX_FP16 (12*32+21) /* "" AMX fp16 Support */ #define X86_FEATURE_AVX_IFMA (12*32+23) /* "" Support for VPMADD52[H,L]UQ */