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| author | Xiaoyao Li <xiaoyao.li@intel.com> | 2021-08-24 12:06:22 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-22 11:47:46 +0200 |
| commit | f109e8a1678ce920b7f0df7865f2a31754ec5d1c (patch) | |
| tree | eb92d87b153e252987cea3dbe7267937f1ad0ba4 | |
| parent | cda01d1da3b0ba663ac77acd9dc254762746ebfd (diff) | |
| download | linux-stable-f109e8a1678ce920b7f0df7865f2a31754ec5d1c.tar.gz linux-stable-f109e8a1678ce920b7f0df7865f2a31754ec5d1c.tar.bz2 linux-stable-f109e8a1678ce920b7f0df7865f2a31754ec5d1c.zip | |
perf/x86/intel/pt: Fix mask of num_address_ranges
[ Upstream commit c53c6b7409f4cd9e542991b53d597fbe2751d7db ]
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
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/x86/events/intel/pt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c index f03100bc5fd1..849f0ba53a9b 100644 --- a/arch/x86/events/intel/pt.c +++ b/arch/x86/events/intel/pt.c @@ -69,7 +69,7 @@ static struct pt_cap_desc { PT_CAP(topa_multiple_entries, 0, CPUID_ECX, BIT(1)), PT_CAP(single_range_output, 0, CPUID_ECX, BIT(2)), 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), |