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From: kan.liang@linux.intel.com
To: peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
	linux-kernel@vger.kernel.org
Cc: ak@linux.intel.com, eranian@google.com, irogers@google.com,
	Kan Liang <kan.liang@linux.intel.com>
Subject: [PATCH V2 4/9] x86/cpufeatures: Add Architectural PerfMon Extension bit
Date: Wed,  4 Jan 2023 12:13:44 -0800	[thread overview]
Message-ID: <20230104201349.1451191-4-kan.liang@linux.intel.com> (raw)
In-Reply-To: <20230104201349.1451191-1-kan.liang@linux.intel.com>

From: Kan Liang <kan.liang@linux.intel.com>

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>
---

Change since V1
- Rebase on top of 6.2-rc1

 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 61012476d66e..b64555b68a14 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 */
 
-- 
2.35.1


  parent reply	other threads:[~2023-01-04 20:14 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-04 20:13 [PATCH V2 1/9] perf: Add PMU_FORMAT_ATTR_SHOW kan.liang
2023-01-04 20:13 ` [PATCH V2 2/9] perf/x86: Add Meteor Lake support kan.liang
2023-01-09 17:02   ` [tip: perf/core] " tip-bot2 for Kan Liang
2023-01-04 20:13 ` [PATCH V2 3/9] perf/x86: Support Retire Latency kan.liang
2023-01-09 17:02   ` [tip: perf/core] " tip-bot2 for Kan Liang
2023-01-04 20:13 ` kan.liang [this message]
2023-01-09 17:02   ` [tip: perf/core] x86/cpufeatures: Add Architectural PerfMon Extension bit tip-bot2 for Kan Liang
2023-01-04 20:13 ` [PATCH V2 5/9] perf/x86/intel: Support Architectural PerfMon Extension leaf kan.liang
2023-01-09 17:02   ` [tip: perf/core] " tip-bot2 for Kan Liang
2023-01-04 20:13 ` [PATCH V2 6/9] perf/x86/cstate: Add Meteor Lake support kan.liang
2023-01-09 11:15   ` [tip: perf/urgent] " tip-bot2 for Kan Liang
2023-01-09 17:02   ` [tip: perf/core] " tip-bot2 for Kan Liang
2023-01-04 20:13 ` [PATCH V2 7/9] perf/x86/msr: " kan.liang
2023-01-09 11:15   ` [tip: perf/urgent] " tip-bot2 for Kan Liang
2023-01-09 17:02   ` [tip: perf/core] " tip-bot2 for Kan Liang
2023-02-02  1:47   ` [PATCH V2 7/9] " Arnaldo Carvalho de Melo
2023-02-02 14:34     ` Liang, Kan
2023-02-02 14:45       ` Arnaldo Carvalho de Melo
2023-02-03 20:21       ` Arnaldo Carvalho de Melo
2023-02-03 20:28         ` Arnaldo Carvalho de Melo
2023-02-06 14:32           ` Liang, Kan
2023-02-06 14:51             ` Arnaldo Carvalho de Melo
2023-01-04 20:13 ` [PATCH V2 8/9] perf report: Support Retire Latency kan.liang
2023-01-04 20:13 ` [PATCH V2 9/9] perf script: " kan.liang
2023-01-09 17:02 ` [tip: perf/core] perf: Add PMU_FORMAT_ATTR_SHOW tip-bot2 for Kan Liang

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