slightly reduce the amount of pointer chasing this needs to do.
More importantly, this will easily generalize to virtio 1.0.
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
drivers/virtio/virtio_pci.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 6a7b8bf..7b82eb5 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -204,11 +204,9 @@ static void vp_reset(struct virtio_device *vdev)
/* the notify function used when creating a virt queue */
static bool vp_notify(struct virtqueue *vq)
{
- struct virtio_pci_device *vp_dev = to_vp_device(vq->vdev);
-
/* we write the queue's selector into the notification register to
* signal the other end */
- iowrite16(vq->index, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_NOTIFY);
+ iowrite16(vq->index, (void __iomem *)vq->priv);
return true;
}
@@ -437,6 +435,7 @@ static struct virtqueue *setup_vq(struct virtio_device *vdev, unsigned index,
goto out_activate_queue;
}
+ vq->priv = (void __force *)vp_dev->ioaddr + VIRTIO_PCI_QUEUE_NOTIFY;
info->vq = vq;
if (msix_vec != VIRTIO_MSI_NO_VECTOR) {
--
MST
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