Michael S. Tsirkin
2014-Oct-22 18:44 UTC
[PATCH RFC v3 05/16] virtio: add virtio 1.0 feature bit
Based on original patches by Rusty Russell, Thomas Huth and Cornelia Huck. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/uapi/linux/virtio_config.h | 7 +++++-- drivers/virtio/virtio_ring.c | 2 ++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/include/uapi/linux/virtio_config.h b/include/uapi/linux/virtio_config.h index 3ce768c..f3fe33a 100644 --- a/include/uapi/linux/virtio_config.h +++ b/include/uapi/linux/virtio_config.h @@ -41,11 +41,11 @@ /* We've given up on this device. */ #define VIRTIO_CONFIG_S_FAILED 0x80 -/* Some virtio feature bits (currently bits 28 through 31) are reserved for the +/* Some virtio feature bits (currently bits 28 through 32) are reserved for the * transport being used (eg. virtio_ring), the rest are per-device feature * bits. */ #define VIRTIO_TRANSPORT_F_START 28 -#define VIRTIO_TRANSPORT_F_END 32 +#define VIRTIO_TRANSPORT_F_END 33 /* Do we get callbacks when the ring is completely used, even if we've * suppressed them? */ @@ -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 */ diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index b311fa7..9f5dfe3 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -780,6 +780,8 @@ void vring_transport_features(struct virtio_device *vdev) break; case VIRTIO_RING_F_EVENT_IDX: break; + case VIRTIO_F_VERSION_1: + break; default: /* We don't understand this bit. */ vdev->features &= ~(1ULL << i); -- MST
Cornelia Huck
2014-Oct-23 11:57 UTC
[PATCH RFC v3 05/16] virtio: add virtio 1.0 feature bit
On Wed, 22 Oct 2014 21:44:31 +0300 "Michael S. Tsirkin" <mst at redhat.com> wrote:> Based on original patches by Rusty Russell, Thomas Huth > and Cornelia Huck. > > Signed-off-by: Michael S. Tsirkin <mst at redhat.com> > --- > include/uapi/linux/virtio_config.h | 7 +++++-- > drivers/virtio/virtio_ring.c | 2 ++ > 2 files changed, 7 insertions(+), 2 deletions(-)Reviewed-by: Cornelia Huck <cornelia.huck at de.ibm.com>
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