int kvm_perf_init(void)
{
- /*
- * Check if HW_PERF_EVENTS are supported by checking the number of
- * hardware performance counters. This could ensure the presence of
- * a physical PMU and CONFIG_PERF_EVENT is selected.
- */
- if (IS_ENABLED(CONFIG_ARM_PMU) && perf_num_counters() > 0)
+ if (kvm_pmu_probe_pmuver() != 0xf)
static_branch_enable(&kvm_arm_pmu_available);
return perf_register_guest_info_callbacks(&kvm_guest_cbs);
kvm_pmu_create_perf_event(vcpu, select_idx);
}
-static int kvm_pmu_probe_pmuver(void)
+int kvm_pmu_probe_pmuver(void)
{
struct perf_event_attr attr = { };
struct perf_event *event;
int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu,
struct kvm_device_attr *attr);
int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu);
+int kvm_pmu_probe_pmuver(void);
#else
struct kvm_pmu {
};
{
return 0;
}
+
+static inline int kvm_pmu_probe_pmuver(void) { return 0xf; }
+
#endif
#endif