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arm/arm64: KVM: vgic: Clear queued flags on unqueue

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If we unqueue a level-triggered interrupt completely, and the LR does
not stick around in the active state (and will therefore no longer
generate a maintenance interrupt), then we should clear the queued flag
so that the vgic can actually queue this level-triggered interrupt at a
later time and deal with its pending state then.

Note: This should actually be properly fixed to handle the active state
on the distributor.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Christoffer Dall 2014-06-14 22:37:33 +02:00
parent dbf20f9d81
commit cced50c928
1 changed files with 3 additions and 1 deletions
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4
virt/kvm/arm/vgic.c
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@ -667,8 +667,10 @@ static void vgic_unqueue_irqs(struct kvm_vcpu *vcpu)
* active), then the LR does not hold any useful info and can * active), then the LR does not hold any useful info and can
* be marked as free for other use. * be marked as free for other use.
*/ */
if (!(lr.state & LR_STATE_MASK)) if (!(lr.state & LR_STATE_MASK)) {
vgic_retire_lr(i, lr.irq, vcpu); vgic_retire_lr(i, lr.irq, vcpu);
vgic_irq_clear_queued(vcpu, lr.irq);
}
/* Finally update the VGIC state. */ /* Finally update the VGIC state. */
vgic_update_state(vcpu->kvm); vgic_update_state(vcpu->kvm);