# \[PATCH\] perf/x86/intel/pt: Fix mask of num\_address\_ranges - Subsystems: PERFORMANCE EVENTS SUBSYSTEM, THE REST, X86 ARCHITECTURE (32-BIT AND 64-BIT) - Maintainers: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds, Thomas Gleixner, Borislav Petkov, Dave Hansen - Status: LANDED · 1 review, 1 by a maintainer (c53c6b7409f4 · 2021-08-25 13:42 M Alexander Shishkin) - Landed in mainline as c53c6b7409f4 on 2021-08-25. - 1 review trailer (1 from subsystem maintainers). - List: linux-perf-users - 1 message, 1 author - Page: https://ratatoskr.run/linux-perf-users/2021/08/1486534/t ## \[PATCH\] perf/x86/intel/pt: Fix mask of num\_address\_ranges - From: Xiaoyao Li \ - Date: 2021-08-24 04:06:29 - Message: https://ratatoskr.run/linux-perf-users/2021/08/1486534.md ```text 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 Acked-by: Alexander Shishkin --- 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 ```