From: Marc Zyngier Date: Fri, 27 Oct 2017 14:28:47 +0000 (+0100) Subject: KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint X-Git-Tag: v4.15-rc1~12^2~3^2~10 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=c971968071d3ec5e8605f9da9e867441e2edf000;p=linux.git KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint When a vPE exits, the pending_last flag is set when there are pending VLPIs stored in the pending table. Similarily, this flag will be set 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. Acked-by: Christoffer Dall Reviewed-by: Eric Auger Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall --- diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c index a05a5700910b..d29e91215366 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_irqsave(&vgic_cpu->ap_list_lock, flags); list_for_each_entry(irq, &vgic_cpu->ap_list_head, ap_list) {