[PATCH v4 10/26] KVM: arm/arm64: GICv4: Handle INT command applied to a VLPI

Marc Zyngier
2017-10-06T15:33:45Z

If the guest issues an INT command targetting a VLPI, let's
call into the irq_set_irqchip_state() helper to make it pending
on the physical side.

This works just as well if userspace decides to inject an interrupt
using the normal userspace API...

Acked-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
virt/kvm/arm/vgic/vgic-its.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index 89768d2b6a91..b2a678d131d0 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -578,6 +578,10 @@ static int vgic_its_trigger_msi(struct kvm *kvm, struct vgic_its *its,
if (err)
return err;

+ if (irq->hw)
+ return irq_set_irqchip_state(irq->host_irq,
+ IRQCHIP_STATE_PENDING, true);
+
spin_lock(&irq->irq_lock);
irq->pending_latch = true;
vgic_queue_irq_unlock(kvm, irq);
--
2.14.1