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Diffstat (limited to 'arch/x86/kvm/pmu.c')
-rw-r--r--arch/x86/kvm/pmu.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index 7aad5446f393..a73f0c104813 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -33,10 +33,11 @@ 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 },
};
/* mapping between fixed pmc index and arch_events array */
-int fixed_pmc_events[] = {1, 0, 2};
+int fixed_pmc_events[] = {1, 0, 7};
static bool pmc_is_gp(struct kvm_pmc *pmc)
{
@@ -210,6 +211,9 @@ static void reprogram_gp_counter(struct kvm_pmc *pmc, u64 eventsel)
unsigned config, type = PERF_TYPE_RAW;
u8 event_select, unit_mask;
+ if (eventsel & ARCH_PERFMON_EVENTSEL_PIN_CONTROL)
+ printk_once("kvm pmu: pin control bit is ignored\n");
+
pmc->eventsel = eventsel;
stop_counter(pmc);
@@ -220,7 +224,7 @@ static void reprogram_gp_counter(struct kvm_pmc *pmc, u64 eventsel)
event_select = eventsel & ARCH_PERFMON_EVENTSEL_EVENT;
unit_mask = (eventsel & ARCH_PERFMON_EVENTSEL_UMASK) >> 8;
- if (!(event_select & (ARCH_PERFMON_EVENTSEL_EDGE |
+ if (!(eventsel & (ARCH_PERFMON_EVENTSEL_EDGE |
ARCH_PERFMON_EVENTSEL_INV |
ARCH_PERFMON_EVENTSEL_CMASK))) {
config = find_arch_event(&pmc->vcpu->arch.pmu, event_select,
@@ -413,7 +417,7 @@ int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data)
struct kvm_pmc *counters;
u64 ctr;
- pmc &= (3u << 30) - 1;
+ pmc &= ~(3u << 30);
if (!fixed && pmc >= pmu->nr_arch_gp_counters)
return 1;
if (fixed && pmc >= pmu->nr_arch_fixed_counters)