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KVM: PMU: add proper support for fixed counter 2

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Currently pmu emulation emulates fixed counter 2 as bus cycles
architectural counter, but since commit 9c1497ea591b25d perf has
pseudo encoding for it. Use it.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Gleb Natapov 2012-02-26 16:55:42 +02:00 committed by Avi Kivity
parent fac3368310
commit 62079d8a43
1 changed files with 2 additions and 1 deletions
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arch/x86/kvm/pmu.c
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@ -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)
{