2014-02-20 17:45:31

by Stephane Eranian

[permalink] [raw]
Subject: [PATCH] kvm/pmu: fix mapping of unhalted_reference_cycles event


The pseudo encoding for unhalted_reference_cycles
is 0x0300. The KVM table was mapping it to 0x3000
This patch fixes this.

Signed-off-by: Stephane Eranian <[email protected]>

diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index 5c4f631..db79c00 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -33,7 +33,7 @@ static struct kvm_arch_event_perf_mapping {
[4] = { 0x2e, 0x41, PERF_COUNT_HW_CACHE_MISSES },
[5] = { 0xc4, 0x00, PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
[6] = { 0xc5, 0x00, PERF_COUNT_HW_BRANCH_MISSES },
- [7] = { 0x00, 0x30, PERF_COUNT_HW_REF_CPU_CYCLES },
+ [7] = { 0x00, 0x03, PERF_COUNT_HW_REF_CPU_CYCLES },
};

/* mapping between fixed pmc index and arch_events array */