Wei Xu f90cda636d virtio: device/driver area size calculation refactor for split ring
There is slight size difference between split/packed rings.

This is the refactor of split ring as well as a helper to expanding
device and driver area size calculation for packed ring.

Signed-off-by: Wei Xu <wexu@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Jens Freimann <jfreimann@redhat.com>
Message-Id: <20191025083527.30803-3-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-10-25 07:46:22 -04:00
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