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authorAnthony Liguori <aliguori@us.ibm.com>2007-11-07 16:31:52 +1100
committerRusty Russell <rusty@rustcorp.com.au>2007-11-12 13:55:12 +1100
commit44332f7167dfb1ca04af96a2cff938c5e23433db (patch)
treef096fa66efcaa8b70629667d4252c152c81ef603
parent6e800af233e0bdf108efb7bd23c11ea6fa34cdeb (diff)
virtio: fix vring_init for 64 bits
This patch fixes a typo in vring_init(). This happens to work today in lguest because the sizeof(struct vring_desc) is 16 and struct vring contains 3 pointers and an unsigned int so on 32-bit sizeof(struct vring_desc) == sizeof(struct vring). However, this is no longer true on 64-bit where the bug is exposed. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
-rw-r--r--include/linux/virtio_ring.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
index ac69e7bb5a14..5b88d215af50 100644
--- a/include/linux/virtio_ring.h
+++ b/include/linux/virtio_ring.h
@@ -92,8 +92,8 @@ static inline void vring_init(struct vring *vr, unsigned int num, void *p)
{
vr->num = num;
vr->desc = p;
- vr->avail = p + num*sizeof(struct vring);
- vr->used = p + (num+1)*(sizeof(struct vring) + sizeof(__u16));
+ vr->avail = p + num*sizeof(struct vring_desc);
+ vr->used = p + (num+1)*(sizeof(struct vring_desc) + sizeof(__u16));
}
static inline unsigned vring_size(unsigned int num)