1 files changed, 53 insertions, 13 deletions

diff --git a/arch/x86/kvm/pmu.h b/arch/x86/kvm/pmu.h
index 59d6b76203d5..5cc5721f260b 100644
--- a/arch/x86/kvm/pmu.h
+++ b/arch/x86/kvm/pmu.h
@@ -8,6 +8,9 @@
 #define pmu_to_vcpu(pmu)  (container_of((pmu), struct kvm_vcpu, arch.pmu))
 #define pmc_to_pmu(pmc)   (&(pmc)->vcpu->arch.pmu)
 
+#define MSR_IA32_MISC_ENABLE_PMU_RO_MASK (MSR_IA32_MISC_ENABLE_PEBS_UNAVAIL |	\
+					  MSR_IA32_MISC_ENABLE_BTS_UNAVAIL)
+
 /* retrieve the 4 bits for EN and PMI out of IA32_FIXED_CTR_CTRL */
 #define fixed_ctrl_field(ctrl_reg, idx) (((ctrl_reg) >> ((idx)*4)) & 0xf)
 
@@ -15,8 +18,6 @@
 #define VMWARE_BACKDOOR_PMC_REAL_TIME		0x10001
 #define VMWARE_BACKDOOR_PMC_APPARENT_TIME	0x10002
 
-#define MAX_FIXED_COUNTERS	3
-
 struct kvm_event_hw_type_mapping {
 	u8 eventsel;
 	u8 unit_mask;
@@ -24,9 +25,7 @@ struct kvm_event_hw_type_mapping {
 };
 
 struct kvm_pmu_ops {
-	unsigned (*find_arch_event)(struct kvm_pmu *pmu, u8 event_select,
-				    u8 unit_mask);
-	unsigned (*find_fixed_event)(int idx);
+	bool (*hw_event_available)(struct kvm_pmc *pmc);
 	bool (*pmc_is_enabled)(struct kvm_pmc *pmc);
 	struct kvm_pmc *(*pmc_idx_to_pmc)(struct kvm_pmu *pmu, int pmc_idx);
 	struct kvm_pmc *(*rdpmc_ecx_to_pmc)(struct kvm_vcpu *vcpu,
@@ -43,6 +42,8 @@ struct kvm_pmu_ops {
 	void (*cleanup)(struct kvm_vcpu *vcpu);
 };
 
+void kvm_pmu_ops_update(const struct kvm_pmu_ops *pmu_ops);
+
 static inline u64 pmc_bitmask(struct kvm_pmc *pmc)
 {
 	struct kvm_pmu *pmu = pmc_to_pmu(pmc);
@@ -90,11 +91,6 @@ static inline bool pmc_is_fixed(struct kvm_pmc *pmc)
 	return pmc->type == KVM_PMC_FIXED;
 }
 
-static inline bool pmc_is_enabled(struct kvm_pmc *pmc)
-{
-	return kvm_x86_ops.pmu_ops->pmc_is_enabled(pmc);
-}
-
 static inline bool kvm_valid_perf_global_ctrl(struct kvm_pmu *pmu,
 						 u64 data)
 {
@@ -142,9 +138,52 @@ static inline u64 get_sample_period(struct kvm_pmc *pmc, u64 counter_value)
 	return sample_period;
 }
 
-void reprogram_gp_counter(struct kvm_pmc *pmc, u64 eventsel);
-void reprogram_fixed_counter(struct kvm_pmc *pmc, u8 ctrl, int fixed_idx);
-void reprogram_counter(struct kvm_pmu *pmu, int pmc_idx);
+static inline void pmc_update_sample_period(struct kvm_pmc *pmc)
+{
+	if (!pmc->perf_event || pmc->is_paused)
+		return;
+
+	perf_event_period(pmc->perf_event,
+			  get_sample_period(pmc, pmc->counter));
+}
+
+static inline bool pmc_speculative_in_use(struct kvm_pmc *pmc)
+{
+	struct kvm_pmu *pmu = pmc_to_pmu(pmc);
+
+	if (pmc_is_fixed(pmc))
+		return fixed_ctrl_field(pmu->fixed_ctr_ctrl,
+					pmc->idx - INTEL_PMC_IDX_FIXED) & 0x3;
+
+	return pmc->eventsel & ARCH_PERFMON_EVENTSEL_ENABLE;
+}
+
+extern struct x86_pmu_capability kvm_pmu_cap;
+
+static inline void kvm_init_pmu_capability(void)
+{
+	bool is_intel = boot_cpu_data.x86_vendor == X86_VENDOR_INTEL;
+
+	perf_get_x86_pmu_capability(&kvm_pmu_cap);
+
+	 /*
+	  * For Intel, only support guest architectural pmu
+	  * on a host with architectural pmu.
+	  */
+	if ((is_intel && !kvm_pmu_cap.version) || !kvm_pmu_cap.num_counters_gp)
+		enable_pmu = false;
+
+	if (!enable_pmu) {
+		memset(&kvm_pmu_cap, 0, sizeof(kvm_pmu_cap));
+		return;
+	}
+
+	kvm_pmu_cap.version = min(kvm_pmu_cap.version, 2);
+	kvm_pmu_cap.num_counters_fixed = min(kvm_pmu_cap.num_counters_fixed,
+					     KVM_PMC_MAX_FIXED);
+}
+
+void reprogram_counter(struct kvm_pmc *pmc);
 
 void kvm_pmu_deliver_pmi(struct kvm_vcpu *vcpu);
 void kvm_pmu_handle_event(struct kvm_vcpu *vcpu);
@@ -159,6 +198,7 @@ void kvm_pmu_init(struct kvm_vcpu *vcpu);
 void kvm_pmu_cleanup(struct kvm_vcpu *vcpu);
 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_trigger_event(struct kvm_vcpu *vcpu, u64 perf_hw_id);
 
 bool is_vmware_backdoor_pmc(u32 pmc_idx);