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>

1 files changed, 4 insertions, 0 deletions

diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index 80bea7021e2e..15e79285380d 100644
--- 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;
 }