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virtio: add virtio 1.0 feature bit

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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@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Michael S. Tsirkin 2014-10-22 15:49:34 +03:00
parent 732c56e984
commit 4ec22faeb2
1 changed files with 3 additions and 0 deletions
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3
include/uapi/linux/virtio_config.h
View file

@ -54,4 +54,7 @@
/* Can the device handle any descriptor layout? */
#define VIRTIO_F_ANY_LAYOUT 27
/* v1.0 compliant. */
#define VIRTIO_F_VERSION_1 32
#endif /* _UAPI_LINUX_VIRTIO_CONFIG_H */