From: Marc Zyngier <marc.zyngier@arm.com>
Date: Fri, 27 Oct 2017 15:28:40 +0100
Subject: KVM: arm/arm64: GICv4: Handle INT command applied to a VLPI
Patch-mainline: v4.15-rc1
Git-commit: 1b7fe468b0ca6a4b47a447cf583455e445bf0246
References: bsc#1077761
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>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Alexander Graf <agraf@suse.de>
---
virt/kvm/arm/vgic/vgic-its.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -581,6 +581,10 @@
if (err)
return err;
+ if (irq->hw)
+ return irq_set_irqchip_state(irq->host_irq,
+ IRQCHIP_STATE_PENDING, true);
+
spin_lock_irqsave(&irq->irq_lock, flags);
irq->pending_latch = true;
vgic_queue_irq_unlock(kvm, irq, flags);