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* [PATCH] perf/x86/intel/pt: Fix mask of num_address_ranges
@ 2021-08-24  4:06 Xiaoyao Li
  2021-08-26  6:56 ` [tip: perf/urgent] " tip-bot2 for Xiaoyao Li
  0 siblings, 1 reply; 2+ messages in thread
From: Xiaoyao Li @ 2021-08-24  4:06 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Thomas Gleixner, Borislav Petkov, H. Peter Anvin
  Cc: x86, linux-perf-users, linux-kernel, xiaoyao.li

Per SDM, bit 2:0 of CPUID(0x14,1).EAX[2:0] reports the number of
configurable address ranges for filtering, not bit 1:0.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
 arch/x86/events/intel/pt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c
index 915847655c06..b044577785bb 100644
--- a/arch/x86/events/intel/pt.c
+++ b/arch/x86/events/intel/pt.c
@@ -62,7 +62,7 @@ static struct pt_cap_desc {
 	PT_CAP(single_range_output,	0, CPUID_ECX, BIT(2)),
 	PT_CAP(output_subsys,		0, CPUID_ECX, BIT(3)),
 	PT_CAP(payloads_lip,		0, CPUID_ECX, BIT(31)),
-	PT_CAP(num_address_ranges,	1, CPUID_EAX, 0x3),
+	PT_CAP(num_address_ranges,	1, CPUID_EAX, 0x7),
 	PT_CAP(mtc_periods,		1, CPUID_EAX, 0xffff0000),
 	PT_CAP(cycle_thresholds,	1, CPUID_EBX, 0xffff),
 	PT_CAP(psb_periods,		1, CPUID_EBX, 0xffff0000),
-- 
2.27.0


^ permalink raw reply	[flat|nested] 2+ messages in thread

* [tip: perf/urgent] perf/x86/intel/pt: Fix mask of num_address_ranges
  2021-08-24  4:06 [PATCH] perf/x86/intel/pt: Fix mask of num_address_ranges Xiaoyao Li
@ 2021-08-26  6:56 ` tip-bot2 for Xiaoyao Li
  0 siblings, 0 replies; 2+ messages in thread
From: tip-bot2 for Xiaoyao Li @ 2021-08-26  6:56 UTC (permalink / raw)
  To: linux-tip-commits
  Cc: Xiaoyao Li, Peter Zijlstra (Intel),
	Alexander Shishkin, x86, linux-kernel

The following commit has been merged into the perf/urgent branch of tip:

Commit-ID:     c53c6b7409f4cd9e542991b53d597fbe2751d7db
Gitweb:        https://git.kernel.org/tip/c53c6b7409f4cd9e542991b53d597fbe2751d7db
Author:        Xiaoyao Li <xiaoyao.li@intel.com>
AuthorDate:    Tue, 24 Aug 2021 12:06:22 +08:00
Committer:     Peter Zijlstra <peterz@infradead.org>
CommitterDate: Wed, 25 Aug 2021 15:42:31 +02:00

perf/x86/intel/pt: Fix mask of num_address_ranges

Per SDM, bit 2:0 of CPUID(0x14,1).EAX[2:0] reports the number of
configurable address ranges for filtering, not bit 1:0.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Link: https://lkml.kernel.org/r/20210824040622.4081502-1-xiaoyao.li@intel.com
---
 arch/x86/events/intel/pt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c
index 9158476..b044577 100644
--- a/arch/x86/events/intel/pt.c
+++ b/arch/x86/events/intel/pt.c
@@ -62,7 +62,7 @@ static struct pt_cap_desc {
 	PT_CAP(single_range_output,	0, CPUID_ECX, BIT(2)),
 	PT_CAP(output_subsys,		0, CPUID_ECX, BIT(3)),
 	PT_CAP(payloads_lip,		0, CPUID_ECX, BIT(31)),
-	PT_CAP(num_address_ranges,	1, CPUID_EAX, 0x3),
+	PT_CAP(num_address_ranges,	1, CPUID_EAX, 0x7),
 	PT_CAP(mtc_periods,		1, CPUID_EAX, 0xffff0000),
 	PT_CAP(cycle_thresholds,	1, CPUID_EBX, 0xffff),
 	PT_CAP(psb_periods,		1, CPUID_EBX, 0xffff0000),

^ permalink raw reply	[flat|nested] 2+ messages in thread

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