diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-01-02 22:41:36 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-01-02 22:41:36 +0100 |
commit | 923a789b49c7269a0245d5af6afe486188d940df (patch) | |
tree | c3f168427372e64f7467a794f313416da5086ba0 /include/linux/virtio_ring.h | |
parent | 103ceffb9501531f6931df6aebc11a05189201f0 (diff) | |
parent | b840d79631c882786925303c2b0f4fefc31845ed (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.h | 13 |
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), |