KVM: arm/arm64: GICv4: Handle CLEAR applied to a VLPI

Handling CLEAR is pretty easy. Just ask the ITS driver to clear
the corresponding pending bit (which will turn into a CLEAR
command on the physical side).

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

diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index 80bea70..15e7928 100644 (file)
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -1091,6 +1091,10 @@ static int vgic_its_cmd_handle_clear(struct kvm *kvm, struct vgic_its *its,
 
        ite->irq->pending_latch = false;
 
+       if (ite->irq->hw)
+               return irq_set_irqchip_state(ite->irq->host_irq,
+                                            IRQCHIP_STATE_PENDING, false);
+
        return 0;
 }