return &vcpu->arch.pmu.pmc[cnt_idx];
}
-static u32 kvm_pmu_event_mask(struct kvm *kvm)
+static u32 __kvm_pmu_event_mask(unsigned int pmuver)
{
- unsigned int pmuver;
-
- pmuver = kvm->arch.arm_pmu->pmuver;
-
switch (pmuver) {
case ID_AA64DFR0_EL1_PMUVer_IMP:
return GENMASK(9, 0);
}
}
+static u32 kvm_pmu_event_mask(struct kvm *kvm)
+{
+ u64 dfr0 = IDREG(kvm, SYS_ID_AA64DFR0_EL1);
+ u8 pmuver = SYS_FIELD_GET(ID_AA64DFR0_EL1, PMUVer, dfr0);
+
+ return __kvm_pmu_event_mask(pmuver);
+}
+
/**
* kvm_pmc_is_64bit - determine if counter is 64bit
* @pmc: counter context
return 0;
}
case KVM_ARM_VCPU_PMU_V3_FILTER: {
+ u8 pmuver = kvm_arm_pmu_get_pmuver_limit();
struct kvm_pmu_event_filter __user *uaddr;
struct kvm_pmu_event_filter filter;
int nr_events;
- nr_events = kvm_pmu_event_mask(kvm) + 1;
+ /*
+ * Allow userspace to specify an event filter for the entire
+ * event range supported by PMUVer of the hardware, rather
+ * than the guest's PMUVer for KVM backward compatibility.
+ */
+ nr_events = __kvm_pmu_event_mask(pmuver) + 1;
uaddr = (struct kvm_pmu_event_filter __user *)(long)attr->addr;