Re: [PATCH net] vhost_net: remove VHOST_NET_F_VIRTIO_NET_HDR support

From: Jason Wang <redacted>
Date: Fri,  8 Jun 2018 11:50:42 +0800

This feature bit is duplicated with VIRTIO_F_ANY_LAYOUT, this means if
a userpsace want to enable VRITIO_F_ANY_LAYOUT,
VHOST_NET_F_VIRTIO_NET_HDR will be implied too. This is wrong and will
break networking. Fixing this by safely removing
VHOST_NET_F_VIRTIO_NET_HDR support. There should be very few or even
no userspace can use this. Further cleanups could be done for
-net-next for safety.

In the future, we need a vhost dedicated feature set/get ioctl()
instead of reusing virtio ones.

Fixes: 4e9fa50c6ccbe ("vhost: move features to core")
Signed-off-by: Jason Wang <redacted>

I don't see this discussion as resolved yet so I'll mark this
as Deferred in patchwork.

Thanks.