[PATCH v4 15/16] KVM: arm64: PMU: Simplify vcpu computation on perf overflow notification

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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@xxxxxxxxxx>
---
 arch/arm64/kvm/pmu-emul.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c
index b7a5f75d008d..e3d5fe260dcc 100644
--- a/arch/arm64/kvm/pmu-emul.c
+++ b/arch/arm64/kvm/pmu-emul.c
@@ -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);
 }
 
-- 
2.34.1




[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux