diff options
Diffstat (limited to 'arch/x86/kvm/pmu.h')
| -rw-r--r-- | arch/x86/kvm/pmu.h | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/arch/x86/kvm/pmu.h b/arch/x86/kvm/pmu.h index 5c3939e91f1d..0925246731cb 100644 --- a/arch/x86/kvm/pmu.h +++ b/arch/x86/kvm/pmu.h @@ -37,13 +37,26 @@ struct kvm_pmu_ops { void (*deliver_pmi)(struct kvm_vcpu *vcpu); void (*cleanup)(struct kvm_vcpu *vcpu); + bool (*is_mediated_pmu_supported)(struct x86_pmu_capability *host_pmu); + void (*mediated_load)(struct kvm_vcpu *vcpu); + void (*mediated_put)(struct kvm_vcpu *vcpu); + void (*write_global_ctrl)(u64 global_ctrl); + const u64 EVENTSEL_EVENT; const int MAX_NR_GP_COUNTERS; const int MIN_NR_GP_COUNTERS; + + const u32 PERF_GLOBAL_CTRL; + const u32 GP_EVENTSEL_BASE; + const u32 GP_COUNTER_BASE; + const u32 FIXED_COUNTER_BASE; + const u32 MSR_STRIDE; }; void kvm_pmu_ops_update(const struct kvm_pmu_ops *pmu_ops); +void kvm_handle_guest_mediated_pmi(void); + static inline bool kvm_pmu_has_perf_global_ctrl(struct kvm_pmu *pmu) { /* @@ -58,6 +71,11 @@ static inline bool kvm_pmu_has_perf_global_ctrl(struct kvm_pmu *pmu) return pmu->version > 1; } +static inline bool kvm_vcpu_has_mediated_pmu(struct kvm_vcpu *vcpu) +{ + return enable_mediated_pmu && vcpu_to_pmu(vcpu)->version; +} + /* * KVM tracks all counters in 64-bit bitmaps, with general purpose counters * mapped to bits 31:0 and fixed counters mapped to 63:32, e.g. fixed counter 0 @@ -101,6 +119,9 @@ static inline u64 pmc_read_counter(struct kvm_pmc *pmc) { u64 counter, enabled, running; + if (kvm_vcpu_has_mediated_pmu(pmc->vcpu)) + return pmc->counter & pmc_bitmask(pmc); + counter = pmc->counter + pmc->emulated_counter; if (pmc->perf_event && !pmc->is_paused) @@ -174,7 +195,7 @@ static inline bool pmc_is_locally_enabled(struct kvm_pmc *pmc) extern struct x86_pmu_capability kvm_pmu_cap; -void kvm_init_pmu_capability(const struct kvm_pmu_ops *pmu_ops); +void kvm_init_pmu_capability(struct kvm_pmu_ops *pmu_ops); void kvm_pmu_recalc_pmc_emulation(struct kvm_pmu *pmu, struct kvm_pmc *pmc); @@ -213,6 +234,16 @@ static inline bool pmc_is_globally_enabled(struct kvm_pmc *pmc) return test_bit(pmc->idx, (unsigned long *)&pmu->global_ctrl); } +static inline bool kvm_pmu_is_fastpath_emulation_allowed(struct kvm_vcpu *vcpu) +{ + struct kvm_pmu *pmu = vcpu_to_pmu(vcpu); + + return !kvm_vcpu_has_mediated_pmu(vcpu) || + !bitmap_intersects(pmu->pmc_counting_instructions, + (unsigned long *)&pmu->global_ctrl, + X86_PMC_IDX_MAX); +} + void kvm_pmu_deliver_pmi(struct kvm_vcpu *vcpu); void kvm_pmu_handle_event(struct kvm_vcpu *vcpu); int kvm_pmu_rdpmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data); @@ -227,8 +258,12 @@ void kvm_pmu_destroy(struct kvm_vcpu *vcpu); int kvm_vm_ioctl_set_pmu_event_filter(struct kvm *kvm, void __user *argp); void kvm_pmu_instruction_retired(struct kvm_vcpu *vcpu); void kvm_pmu_branch_retired(struct kvm_vcpu *vcpu); +void kvm_mediated_pmu_load(struct kvm_vcpu *vcpu); +void kvm_mediated_pmu_put(struct kvm_vcpu *vcpu); bool is_vmware_backdoor_pmc(u32 pmc_idx); +bool kvm_need_perf_global_ctrl_intercept(struct kvm_vcpu *vcpu); +bool kvm_need_rdpmc_intercept(struct kvm_vcpu *vcpu); extern struct kvm_pmu_ops intel_pmu_ops; extern struct kvm_pmu_ops amd_pmu_ops; |