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KVM: arm64: PMU: Simplify vcpu computation on perf overflow notification

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The way we compute the target vcpu on getting an overflow is
a bit odd, as we use the PMC array as an anchor for kvm_pmc_to_vcpu,
while we could directly compute the correct address.

Get rid of the intermediate step and directly compute the target
vcpu.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221113163832.3154370-16-maz@kernel.org
This commit is contained in:
Marc Zyngier
2022-11-13 16:38:31 +00:00
parent 1f7c978282
commit 9bad925dd7
1 changed files with 1 additions and 4 deletions
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5
arch/arm64/kvm/pmu-emul.c
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@@ -405,11 +405,8 @@ void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu)
static void kvm_pmu_perf_overflow_notify_vcpu(struct irq_work *work)
{
struct kvm_vcpu *vcpu;
struct kvm_pmu *pmu;
pmu = container_of(work, struct kvm_pmu, overflow_work);
vcpu = kvm_pmc_to_vcpu(pmu->pmc);
vcpu = container_of(work, struct kvm_vcpu, arch.pmu.overflow_work);
kvm_vcpu_kick(vcpu);
}