Regarding VIRTIO_F_IN_ORDER and VIRTIO_F_NOTIFICATION_DATA feature bits

[Srujana Challa]

Hi Michael,

While verifying virtio frontend drivers of guest OS on qemu with vhost-vdpa 
backend,
we came across feature bits VIRTIO_F_IN_ORDER and VIRTIO_F_NOTIFICATION_DATA,
which are introduced in virtio 1.1 spec, are not yet enabled in qemu. These 
feature flags
are very much useful for achieving better virtio-net performance and most of 
the latest
hardware VDPA devices supports these feature flags as per of virtio spec.
Could you let us know if there are any plans, to add support for these features 
in upcoming
qemu releases.
I guess there was some discussion on VIRTIO_F_IN_ORDER feature bit long ago,
https://patchew.org/QEMU/1533833677-27512-1-git-send-email-i.maximets@samsung.com/
Seems like that discussion has not reached any conclusion or further work.

Thanks,
Srujana.