From: Jason Wang <jasowang@redhat.com>
Date: Fri, 26 Feb 2016 16:42:41 +0800

This series tries to add basic busy polling for vhost net. The idea is
simple: at the end of tx/rx processing, busy polling for new tx added
descriptor and rx receive socket for a while. The maximum number of
time (in us) could be spent on busy polling was specified ioctl.

I'm assuming this will go through Michael's tree.