From the University of Wisconsin (Jeff Naughton's CS department)
"... on-demand virtualization, in which systems run natively when they
need native performance or features but can be converted on-the-fly to
run virtually when necessary"
They use the quick hibernation feature to slam it down on one and
bring it up on the other.
Here's the paper that they presented Monday:
http://www.usenix.org/event/hotos11/tech/final_files/Kooburat.pdf
Charlie ...