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authorMarc Zyngier <marc.zyngier@arm.com>2017-10-27 17:28:47 +0300
committerChristoffer Dall <christoffer.dall@linaro.org>2017-11-10 11:41:56 +0300
commitc971968071d3ec5e8605f9da9e867441e2edf000 (patch)
tree1411899a2e98bc1420ee23bd03369b4377ff639a /virt
parent6ce18e3a5f3308670b49093b1c350d2834428358 (diff)
downloadlinux-c971968071d3ec5e8605f9da9e867441e2edf000.tar.xz
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 <cdall@linaro.org> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/vgic/vgic.c3
1 files changed, 3 insertions, 0 deletions
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) {