| Message ID | 20250324023450.109312-1-justin.he@arm.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] KVM: arm64: Skip the KVM pmu initialization when hyp is unavailable | expand |
diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c index 6c5950b9ceac..81b1a84ee1b3 100644 --- a/arch/arm64/kvm/pmu-emul.c +++ b/arch/arm64/kvm/pmu-emul.c @@ -779,6 +779,13 @@ void kvm_host_pmu_init(struct arm_pmu *pmu) { struct arm_pmu_entry *entry; + /* + * When Hyp mode is unavailable (e.g., the kernel boots from EL1), + * skip the unnecessary KVM PMU initialization. + */ + if (!is_hyp_mode_available()) + return; + /* * Check the sanitised PMU version for the system, as KVM does not * support implementations where PMUv3 exists on a subset of CPUs.
When Hyp mode is unavailable (e.g., the kernel boots from EL1), skip the unnecessary KVM pmu initialization. Signed-off-by: Jia He <justin.he@arm.com> --- v2: - Utilize is_hyp_mode_available() for improved accuracy when detecting the guest VM case, as it accounts for scenarios where the kernel boots from EL1. arch/arm64/kvm/pmu-emul.c | 7 +++++++ 1 file changed, 7 insertions(+)