K 10
svn:author
V 2
br
K 8
svn:date
V 27
2014-12-12T11:19:10.546549Z
K 7
svn:log
V 187
Add virtio bus 'poll' method allowing us to inform backend we are
going to poll virtqueue.

Use on BERI soft-core to invalidate cpu caches.

Reviewed by:	bryanv
Sponsored by:	DARPA, AFRL

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