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This patch extends the vdpa_vq_state to support packed virtqueue state which is basically the device/driver ring wrap counters and the avail and used index. This will be used for the virito-vdpa support for the packed virtqueue and the future vhost/vhost-vdpa support for the packed virtqueue. Signed-off-by: Jason Wang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Michael S. Tsirkin <[email protected]> Reviewed-by: Eli Cohen <[email protected]>