KVM: arm64: Use symbolic names for the PMU versions

Instead of using a bunch of magic numbers, use the existing definitions
that have been added since 8673e02e58410 ("arm64: perf: Add support
for ARMv8.5-PMU 64-bit counters")

Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>

diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c
index 72cd704..cb16ca2 100644 (file)
--- a/arch/arm64/kvm/pmu-emul.c
+++ b/arch/arm64/kvm/pmu-emul.c
@@ -23,11 +23,11 @@ static void kvm_pmu_stop_counter(struct kvm_vcpu *vcpu, struct kvm_pmc *pmc);
 static u32 kvm_pmu_event_mask(struct kvm *kvm)
 {
        switch (kvm->arch.pmuver) {
-       case 1:                 /* ARMv8.0 */
+       case ID_AA64DFR0_PMUVER_8_0:
                return GENMASK(9, 0);
-       case 4:                 /* ARMv8.1 */
-       case 5:                 /* ARMv8.4 */
-       case 6:                 /* ARMv8.5 */
+       case ID_AA64DFR0_PMUVER_8_1:
+       case ID_AA64DFR0_PMUVER_8_4:
+       case ID_AA64DFR0_PMUVER_8_5:
                return GENMASK(15, 0);
        default:                /* Shouldn't be here, just for sanity */
                WARN_ONCE(1, "Unknown PMU version %d\n", kvm->arch.pmuver);