Commit 005b20a8 authored Oct 05, 2011 by Krishna Kumar Committed by Rusty Russell Nov 02, 2011

virtio: Dont add "config" to list for !per_vq_vector



For the MSI but non-per_vq_vector case, the config/change vq
also gets added to the list of vqs that need to process the
MSI interrupt. This is not needed as config has it's own
handler (vp_config_changed). In any case, vring_interrupt()
finds nothing needs to be done on this vq.

I tested this patch by testing the "Fallback:" and "Finally
fall back" cases in vp_find_vqs(). Please review.

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

parent 5e38483b

drivers/virtio/virtio_pci.c

+7 −3

Original line number	Original line	Diff line number	Diff line
	@@ -415,9 +415,13 @@ static struct virtqueue setup_vq(struct virtio_device vdev, unsigned index,
	}		}
	}		}

			if (callback) {
	spin_lock_irqsave(&vp_dev->lock, flags);		spin_lock_irqsave(&vp_dev->lock, flags);
	list_add(&info->node, &vp_dev->virtqueues);		list_add(&info->node, &vp_dev->virtqueues);
	spin_unlock_irqrestore(&vp_dev->lock, flags);		spin_unlock_irqrestore(&vp_dev->lock, flags);
			} else {
			INIT_LIST_HEAD(&info->node);
			}

	return vq;		return vq;