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KVM: arm64: Gate kvm_pmu_update_state() on the PMU feature

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We currently gate the update of the PMU state on the PMU being "ready".
The "ready" state is only set to true when the first vcpu run is
successful, and if it isn't, we never reach the update code.

So the "ready" state is never the right thing to check for, and it
should instead be the presence of the PMU feature, which makes
a bit more sense.

Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier
2020-11-13 16:41:40 +00:00
parent a3da935802
commit 46acf89de4
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/kvm/pmu-emul.c
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@@ -384,7 +384,7 @@ static void kvm_pmu_update_state(struct kvm_vcpu *vcpu)
struct kvm_pmu *pmu = &vcpu->arch.pmu;
bool overflow;
if (!kvm_arm_pmu_v3_ready(vcpu))
if (!kvm_vcpu_has_pmu(vcpu))
return;
overflow = !!kvm_pmu_overflow_status(vcpu);