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-rw-r--r--arch/arm64/kvm/sys_regs.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index d2e1d745f067..6629cfde2838 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1070,10 +1070,15 @@ static u64 read_id_reg(const struct kvm_vcpu *vcpu,
(0xfUL << ID_AA64ISAR1_GPA_SHIFT) |
(0xfUL << ID_AA64ISAR1_GPI_SHIFT));
} else if (id == SYS_ID_AA64DFR0_EL1) {
+ u64 cap = 0;
+
/* Limit guests to PMUv3 for ARMv8.1 */
+ if (kvm_vcpu_has_pmu(vcpu))
+ cap = ID_AA64DFR0_PMUVER_8_1;
+
val = cpuid_feature_cap_perfmon_field(val,
ID_AA64DFR0_PMUVER_SHIFT,
- ID_AA64DFR0_PMUVER_8_1);
+ cap);
} else if (id == SYS_ID_DFR0_EL1) {
/* Limit guests to PMUv3 for ARMv8.1 */
val = cpuid_feature_cap_perfmon_field(val,