KVM: arm/arm64: Don't queue VLPIs on INV/INVALL

Since VLPIs are injected directly by the hardware there's no need to
mark these as pending in software and queue them on the AP list.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

1 files changed, 6 insertions, 3 deletions

diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index c93ecd4a903b..a3754ec719c4 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -292,11 +292,14 @@ static int update_lpi_config(struct kvm *kvm, struct vgic_irq *irq,
                 irq->priority = LPI_PROP_PRIORITY(prop);
                 irq->enabled = LPI_PROP_ENABLE_BIT(prop);
 
-                vgic_queue_irq_unlock(kvm, irq, flags);
-        } else {
-                spin_unlock_irqrestore(&irq->irq_lock, flags);
+                if (!irq->hw) {
+                        vgic_queue_irq_unlock(kvm, irq, flags);
+                        return 0;
+                }
         }
 
+        spin_unlock_irqrestore(&irq->irq_lock, flags);
+
         if (irq->hw)
                 return its_prop_update_vlpi(irq->host_irq, prop, needs_inv);