diff options
| -rw-r--r-- | arch/arm64/kvm/pmu-emul.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c index 560650972478..689bbd88fd69 100644 --- a/arch/arm64/kvm/pmu-emul.c +++ b/arch/arm64/kvm/pmu-emul.c @@ -14,6 +14,7 @@ #include <asm/kvm_emulate.h> #include <kvm/arm_pmu.h> #include <kvm/arm_vgic.h> +#include <asm/arm_pmuv3.h> #define PERF_ATTR_CFG1_COUNTER_64BIT BIT(0) @@ -672,8 +673,11 @@ void kvm_host_pmu_init(struct arm_pmu *pmu) { struct arm_pmu_entry *entry; - if (pmu->pmuver == ID_AA64DFR0_EL1_PMUVer_NI || - pmu->pmuver == ID_AA64DFR0_EL1_PMUVer_IMP_DEF) + /* + * Check the sanitised PMU version for the system, as KVM does not + * support implementations where PMUv3 exists on a subset of CPUs. + */ + if (!pmuv3_implemented(kvm_arm_pmu_get_pmuver_limit())) return; mutex_lock(&arm_pmus_lock); |