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

diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c
index 915847655c0652820ef9083faae49d63e85007d1..b044577785bbb20bd0b93a27caa5f6bfeabbfa7b 100644 (file)
--- 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),