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authorIngo Molnar <mingo@elte.hu>2009-01-02 22:41:36 +0100
committerIngo Molnar <mingo@elte.hu>2009-01-02 22:41:36 +0100
commit923a789b49c7269a0245d5af6afe486188d940df (patch)
treec3f168427372e64f7467a794f313416da5086ba0 /include/linux/virtio_ring.h
parent103ceffb9501531f6931df6aebc11a05189201f0 (diff)
parentb840d79631c882786925303c2b0f4fefc31845ed (diff)
Merge branch 'linus' into x86/cleanups
Conflicts: arch/x86/kernel/reboot.c
Diffstat (limited to 'include/linux/virtio_ring.h')
-rw-r--r--include/linux/virtio_ring.h13
1 files changed, 7 insertions, 6 deletions
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
index c4a598fb382..71e03722fb5 100644
--- a/include/linux/virtio_ring.h
+++ b/include/linux/virtio_ring.h
@@ -83,7 +83,7 @@ struct vring {
* __u16 avail_idx;
* __u16 available[num];
*
- * // Padding to the next page boundary.
+ * // Padding to the next align boundary.
* char pad[];
*
* // A ring of used descriptor heads with free-running index.
@@ -93,19 +93,19 @@ struct vring {
* };
*/
static inline void vring_init(struct vring *vr, unsigned int num, void *p,
- unsigned long pagesize)
+ unsigned long align)
{
vr->num = num;
vr->desc = p;
vr->avail = p + num*sizeof(struct vring_desc);
- vr->used = (void *)(((unsigned long)&vr->avail->ring[num] + pagesize-1)
- & ~(pagesize - 1));
+ vr->used = (void *)(((unsigned long)&vr->avail->ring[num] + align-1)
+ & ~(align - 1));
}
-static inline unsigned vring_size(unsigned int num, unsigned long pagesize)
+static inline unsigned vring_size(unsigned int num, unsigned long align)
{
return ((sizeof(struct vring_desc) * num + sizeof(__u16) * (2 + num)
- + pagesize - 1) & ~(pagesize - 1))
+ + align - 1) & ~(align - 1))
+ sizeof(__u16) * 2 + sizeof(struct vring_used_elem) * num;
}
@@ -115,6 +115,7 @@ struct virtio_device;
struct virtqueue;
struct virtqueue *vring_new_virtqueue(unsigned int num,
+ unsigned int vring_align,
struct virtio_device *vdev,
void *pages,
void (*notify)(struct virtqueue *vq),