RE: [PATCH V4 3/5] vDPA: introduce vDPA bus

Is there a plan to add an API in vDPA_config_ops for getting the notification area from the VDPA device (something similar to get_notify_area in the VDPA DPDK case)? This will make the notifications from the guest  (vhost_vdpa use case) to the VDPA device more efficient - at least for virtio 1.0+ drivers in the VM.

I believe this would require enhancement to the vhost ioctl (something similar to the  VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG).


Regards,
Harpreet