[PATCH v8 07/50] virtio: add virtio 1.0 feature bit

From: Michael S. Tsirkin
Date: Mon Dec 01 2014 - 11:03:48 EST

Based on original patches by Rusty Russell, Thomas Huth
and Cornelia Huck.

Note: at this time, we do not negotiate this feature bit
in core, drivers have to declare VERSION_1 support explicitly.

For this reason we treat this bit as a device bit
and not as a transport bit for now.

After all drivers are converted, we will be able to
move VERSION_1 to core and drop it from all drivers.

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Reviewed-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
include/uapi/linux/virtio_config.h | 3 +++
1 file changed, 3 insertions(+)

diff --git a/include/uapi/linux/virtio_config.h b/include/uapi/linux/virtio_config.h
index 3ce768c..80e7381 100644
--- a/include/uapi/linux/virtio_config.h
+++ b/include/uapi/linux/virtio_config.h
@@ -54,4 +54,7 @@
/* Can the device handle any descriptor layout? */

+/* v1.0 compliant. */
+#define VIRTIO_F_VERSION_1 32

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