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Commit 0c106b5a authored by Jan Kiszka's avatar Jan Kiszka Committed by Avi Kivity
Browse files

KVM: Clear assigned guest IRQ on release 



When we deassign a guest IRQ, clear the potentially asserted guest line.
There might be no chance for the guest to do this, specifically if we
switch from INTx to MSI mode.

Acked-by: default avatarAlex Williamson <alex.williamson@redhat.com>
Acked-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 945ee35e

virt/kvm/assigned-dev.c

+3 −0
Original line number Diff line number Diff line
@@ -141,6 +141,9 @@ static void deassign_guest_irq(struct kvm *kvm, 
	kvm_unregister_irq_ack_notifier(kvm, &assigned_dev->ack_notifier);

	assigned_dev->ack_notifier.gsi = -1;



	kvm_set_irq(assigned_dev->kvm, assigned_dev->irq_source_id,

		    assigned_dev->guest_irq, 0);



	if (assigned_dev->irq_source_id != -1)

		kvm_free_irq_source_id(kvm, assigned_dev->irq_source_id);

	assigned_dev->irq_source_id = -1;