Displaying 10 results from an estimated 10 matches for "virtio_ring_f_publish_used".
2010 May 18
2
[PATCHv2] vhost-net: utilize PUBLISH_USED_IDX feature
...d, struct vhost_memory *mem,
return 1;
}
-static int vq_access_ok(unsigned int num,
+static int vq_access_ok(struct vhost_dev *d, unsigned int num,
struct vring_desc __user *desc,
struct vring_avail __user *avail,
struct vring_used __user *used)
{
+ size_t s = vhost_has_feature(d, VIRTIO_RING_F_PUBLISH_USED) ? 2 : 0;
return access_ok(VERIFY_READ, desc, num * sizeof *desc) &&
access_ok(VERIFY_READ, avail,
- sizeof *avail + num * sizeof *avail->ring) &&
+ sizeof *avail + num * sizeof *avail->ring + s) &&
access_ok(VERIFY_WRITE, used,
sizeof *us...
2010 May 18
2
[PATCHv2] vhost-net: utilize PUBLISH_USED_IDX feature
...d, struct vhost_memory *mem,
return 1;
}
-static int vq_access_ok(unsigned int num,
+static int vq_access_ok(struct vhost_dev *d, unsigned int num,
struct vring_desc __user *desc,
struct vring_avail __user *avail,
struct vring_used __user *used)
{
+ size_t s = vhost_has_feature(d, VIRTIO_RING_F_PUBLISH_USED) ? 2 : 0;
return access_ok(VERIFY_READ, desc, num * sizeof *desc) &&
access_ok(VERIFY_READ, avail,
- sizeof *avail + num * sizeof *avail->ring) &&
+ sizeof *avail + num * sizeof *avail->ring + s) &&
access_ok(VERIFY_WRITE, used,
sizeof *us...
2010 May 05
4
[PATCH RFC] virtio: put last seen used index into ring itself
...irtqueue *vring_new_virtqueue(unsigned int num,
vq->indirect = virtio_has_feature(vdev, VIRTIO_RING_F_INDIRECT_DESC);
+ /* We publish used index whether Host offers it or not: if not, it's
+ * junk space anyway. But calling this acknowledges the feature. */
+ virtio_has_feature(vdev, VIRTIO_RING_F_PUBLISH_USED);
+
/* No callback? Tell other side not to bother us. */
if (!callback)
vq->vring.avail->flags |= VRING_AVAIL_F_NO_INTERRUPT;
@@ -473,6 +477,8 @@ void vring_transport_features(struct virtio_device *vdev)
switch (i) {
case VIRTIO_RING_F_INDIRECT_DESC:
break;
+ case VIRTIO_RI...
2010 May 05
4
[PATCH RFC] virtio: put last seen used index into ring itself
...irtqueue *vring_new_virtqueue(unsigned int num,
vq->indirect = virtio_has_feature(vdev, VIRTIO_RING_F_INDIRECT_DESC);
+ /* We publish used index whether Host offers it or not: if not, it's
+ * junk space anyway. But calling this acknowledges the feature. */
+ virtio_has_feature(vdev, VIRTIO_RING_F_PUBLISH_USED);
+
/* No callback? Tell other side not to bother us. */
if (!callback)
vq->vring.avail->flags |= VRING_AVAIL_F_NO_INTERRUPT;
@@ -473,6 +477,8 @@ void vring_transport_features(struct virtio_device *vdev)
switch (i) {
case VIRTIO_RING_F_INDIRECT_DESC:
break;
+ case VIRTIO_RI...
2010 Jun 01
3
[PATCHv3 0/2] virtio: put last seen used index into ring itself
Changes from v2: added padding between avail idx and flags,
and changed virtio to only publish used index when callbacks
are enabled.
Here's a rewrite of the original patch with a new layout.
I haven't tested it yet so no idea how this performs, but
I think this addresses the cache bounce issue raised by Avi.
Posting for early flames/comments.
Generally, the Host end of the virtio ring
2010 Jun 01
3
[PATCHv3 0/2] virtio: put last seen used index into ring itself
Changes from v2: added padding between avail idx and flags,
and changed virtio to only publish used index when callbacks
are enabled.
Here's a rewrite of the original patch with a new layout.
I haven't tested it yet so no idea how this performs, but
I think this addresses the cache bounce issue raised by Avi.
Posting for early flames/comments.
Generally, the Host end of the virtio ring
2010 May 18
2
[PATCH] vhost-net: utilize PUBLISH_USED_IDX feature
...d, struct vhost_memory *mem,
return 1;
}
-static int vq_access_ok(unsigned int num,
+static int vq_access_ok(struct vhost_dev *d, unsigned int num,
struct vring_desc __user *desc,
struct vring_avail __user *avail,
struct vring_used __user *used)
{
+ size_t s = vhost_has_feature(d, VIRTIO_RING_F_PUBLISH_USED) ? 2 : 0;
return access_ok(VERIFY_READ, desc, num * sizeof *desc) &&
access_ok(VERIFY_READ, avail,
- sizeof *avail + num * sizeof *avail->ring) &&
+ sizeof *avail + num * sizeof *avail->ring + s) &&
access_ok(VERIFY_WRITE, used,
sizeof *us...
2010 May 18
2
[PATCH] vhost-net: utilize PUBLISH_USED_IDX feature
...d, struct vhost_memory *mem,
return 1;
}
-static int vq_access_ok(unsigned int num,
+static int vq_access_ok(struct vhost_dev *d, unsigned int num,
struct vring_desc __user *desc,
struct vring_avail __user *avail,
struct vring_used __user *used)
{
+ size_t s = vhost_has_feature(d, VIRTIO_RING_F_PUBLISH_USED) ? 2 : 0;
return access_ok(VERIFY_READ, desc, num * sizeof *desc) &&
access_ok(VERIFY_READ, avail,
- sizeof *avail + num * sizeof *avail->ring) &&
+ sizeof *avail + num * sizeof *avail->ring + s) &&
access_ok(VERIFY_WRITE, used,
sizeof *us...
2010 May 26
6
[PATCHv2-RFC 0/2] virtio: put last seen used index into ring itself
Here's a rewrite of the original patch with a new layout.
I haven't tested it yet so no idea how this performs, but
I think this addresses the cache bounce issue raised by Avi.
Posting for early flames/comments.
Generally, the Host end of the virtio ring doesn't need to see where
Guest is up to in consuming the ring. However, to completely understand
what's going on from the
2010 May 26
6
[PATCHv2-RFC 0/2] virtio: put last seen used index into ring itself
Here's a rewrite of the original patch with a new layout.
I haven't tested it yet so no idea how this performs, but
I think this addresses the cache bounce issue raised by Avi.
Posting for early flames/comments.
Generally, the Host end of the virtio ring doesn't need to see where
Guest is up to in consuming the ring. However, to completely understand
what's going on from the