1 files changed, 7 insertions, 0 deletions
diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h
index 61c818a7fe70..a3318f31e8e7 100644
--- a/include/uapi/linux/virtio_ring.h
+++ b/include/uapi/linux/virtio_ring.h
@@ -101,6 +101,13 @@ struct vring {
        struct vring_used *used;
 };
+/* Alignment requirements for vring elements.
+ * When using pre-virtio 1.0 layout, these fall out naturally.
+ */
+#define VRING_AVAIL_ALIGN_SIZE 2
+#define VRING_USED_ALIGN_SIZE 4
+#define VRING_DESC_ALIGN_SIZE 16
 /* The standard layout for the ring is a continuous chunk of memory which looks
 * like this.  We assume num is a power of 2.
 *

diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h index 61c818a7fe70..a3318f31e8e7 100644 --- a/include/uapi/linux/virtio_ring.h +++ b/include/uapi/linux/virtio_ring.h
@@ -101,6 +101,13 @@ struct vring {
101	struct vring_used *used;	101	struct vring_used *used;
102	};	102	};
103		103
		104	/* Alignment requirements for vring elements.
		105	* When using pre-virtio 1.0 layout, these fall out naturally.
		106	*/
		107	#define VRING_AVAIL_ALIGN_SIZE 2
		108	#define VRING_USED_ALIGN_SIZE 4
		109	#define VRING_DESC_ALIGN_SIZE 16
		110
104	/* The standard layout for the ring is a continuous chunk of memory which looks	111	/* The standard layout for the ring is a continuous chunk of memory which looks
105	* like this. We assume num is a power of 2.	112	* like this. We assume num is a power of 2.
106	*	113	*