Commit 9bad925d authored by Marc Zyngier's avatar Marc Zyngier
Browse files

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



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: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221113163832.3154370-16-maz@kernel.org
parent 1f7c9782

arch/arm64/kvm/pmu-emul.c

+1 −4
Original line number Diff line number Diff line
@@ -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);

}