Using unsigned int resulted in silent truncation of the upper 32-bit on x86_64
resulting in an OOPS since the ring was being initialized wrong.
Please reconsider my previous patch to just use PAGE_ALIGN(). Open coding this
sort of stuff, no matter how simple it seems, is just asking for this sort of
trouble.
Signed-off-by: Anthony Liguori <aliguori@xxxxxxxxxx>
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
index 1a4ed49..5de09f9 100644
--- a/include/linux/virtio_ring.h
+++ b/include/linux/virtio_ring.h
@@ -89,7 +89,7 @@ struct vring {
* };
*/
static inline void vring_init(struct vring *vr, unsigned int num, void *p,
- unsigned int pagesize)
+ unsigned long pagesize)
{
vr->num = num;
vr->desc = p;
@@ -98,7 +98,7 @@ static inline void vring_init(struct vring *vr, unsigned int num, void *p,
& ~(pagesize - 1));
}
-static inline unsigned vring_size(unsigned int num, unsigned int pagesize)
+static inline unsigned vring_size(unsigned int num, unsigned long pagesize)
{
return ((sizeof(struct vring_desc) * num + sizeof(__u16) * (2 + num)
+ pagesize - 1) & ~(pagesize - 1))
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