diff options
| author | Like Xu <likexu@tencent.com> | 2022-05-18 21:25:12 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-06-08 04:49:06 -0400 |
| commit | 7aadaa988c5ea0894b3bbea598e4da56f078a289 (patch) | |
| tree | b94ef4ed14187483b2f90711fb980d35adf8896f /arch/x86/kvm/pmu.c | |
| parent | 08dca7a8e73abfeb3a998714272d1d1c974b0190 (diff) | |
| download | linux-7aadaa988c5ea0894b3bbea598e4da56f078a289.tar.bz2 | |
KVM: x86/pmu: Drop amd_event_mapping[] in the KVM context
All gp or fixed counters have been reprogrammed using PERF_TYPE_RAW,
which means that the table that maps perf_hw_id to event select values is
no longer useful, at least for AMD.
For Intel, the logic to check if the pmu event reported by Intel cpuid is
not available is still required, in which case pmc_perf_hw_id() could be
renamed to hw_event_is_unavail() and a bool value is returned to replace
the semantics of "PERF_COUNT_HW_MAX+1".
Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220518132512.37864-12-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/pmu.c')
| -rw-r--r-- | arch/x86/kvm/pmu.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c index 2843ce35c8d9..87483e503c46 100644 --- a/arch/x86/kvm/pmu.c +++ b/arch/x86/kvm/pmu.c @@ -158,9 +158,6 @@ static void pmc_reprogram_counter(struct kvm_pmc *pmc, u32 type, }; bool pebs = test_bit(pmc->idx, (unsigned long *)&pmu->pebs_enable); - if (type == PERF_TYPE_HARDWARE && config >= PERF_COUNT_HW_MAX) - return; - attr.sample_period = get_sample_period(pmc, pmc->counter); if ((attr.config & HSW_IN_TX_CHECKPOINTED) && @@ -258,6 +255,9 @@ static bool check_pmu_event_filter(struct kvm_pmc *pmc) __u64 key; int idx; + if (!static_call(kvm_x86_pmu_hw_event_available)(pmc)) + return false; + filter = srcu_dereference(kvm->arch.pmu_event_filter, &kvm->srcu); if (!filter) goto out; |