diff options
Diffstat (limited to 'arch/arm64/kvm/perf.c')
| -rw-r--r-- | arch/arm64/kvm/perf.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/kvm/perf.c b/arch/arm64/kvm/perf.c index d45b8b9a4415..151c31fb9860 100644 --- a/arch/arm64/kvm/perf.c +++ b/arch/arm64/kvm/perf.c @@ -11,6 +11,8 @@ #include <asm/kvm_emulate.h> +DEFINE_STATIC_KEY_FALSE(kvm_arm_pmu_available); + static int kvm_is_in_guest(void) { return kvm_get_running_vcpu() != NULL; @@ -48,6 +50,9 @@ static struct perf_guest_info_callbacks kvm_guest_cbs = { int kvm_perf_init(void) { + if (kvm_pmu_probe_pmuver() != 0xf && !is_protected_kvm_enabled()) + static_branch_enable(&kvm_arm_pmu_available); + return perf_register_guest_info_callbacks(&kvm_guest_cbs); } |