From a36eca7b41272270584c6388d1dfdafde0831dbf Mon Sep 17 00:00:00 2001
From: Sasha Levin <levinsasha928@gmail.com>
Date: Mon, 19 Sep 2011 13:40:45 +0300
Subject: [PATCH] kvm tools: Fix INTx handling

Since we didn't raise the ISR INTx interrupts were sometimes ignored by
the guest. This caused hangs on boot when starting a guest without MSIX
support.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
---
 virtio/pci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/virtio/pci.c b/virtio/pci.c
index 7743431..f01851b 100644
--- a/virtio/pci.c
+++ b/virtio/pci.c
@@ -234,6 +234,7 @@ int virtio_pci__signal_vq(struct kvm *kvm, struct virtio_pci *vpci, u32 vq)
 
 		kvm__irq_trigger(kvm, vpci->gsis[vq]);
 	} else {
+		vpci->isr = VIRTIO_IRQ_HIGH;
 		kvm__irq_trigger(kvm, vpci->pci_hdr.irq_line);
 	}
 	return 0;