[PATCH v3 50/59] KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint
From: Christoffer Dall <hidden>
Date: 2017-08-28 18:18:52
Also in:
kvm, kvmarm, lkml
From: Christoffer Dall <hidden>
Date: 2017-08-28 18:18:52
Also in:
kvm, kvmarm, lkml
On Mon, Jul 31, 2017 at 06:26:28PM +0100, Marc Zyngier wrote:
When a vPE exits, the pending_last flag is set when there are pending VLPIs stored in the pending table. Similarily, we set this flag when a doorbell interrupt fires, as it indicates the same condition. Let's update kvm_vgic_vcpu_pending_irq() to account for that flag as well, making a vcpu runnable when set. Signed-off-by: Marc Zyngier <redacted> --- virt/kvm/arm/vgic/vgic.c | 3 +++ 1 file changed, 3 insertions(+)diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c index a96e566905d2..dfac894f6f03 100644 --- a/virt/kvm/arm/vgic/vgic.c +++ b/virt/kvm/arm/vgic/vgic.c@@ -781,6 +781,9 @@ int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu) if (!vcpu->kvm->arch.vgic.enabled) return false; + if (vcpu->arch.vgic_cpu.vgic_v3.its_vpe.pending_last) + return true; + spin_lock(&vgic_cpu->ap_list_lock); list_for_each_entry(irq, &vgic_cpu->ap_list_head, ap_list) {-- 2.11.0
Acked-by: Christoffer Dall <redacted>