George Dunlap introduces
a spectrum of virtualization, on Linux.com. "At XenSummit 2012
in San Diego, Mukesh Rathor from Oracle presented his work on a new
virtualization mode, called "PVH". Adding this mode, there are now a rather
dizzying array of different terms thrown about -- "HVM", "PV", "PVHVM",
"PVH" -- what do they all mean? And why do we have so many? The reason we have all these terms is that virtualization is no longer binary; there is a spectrum of virtualization, and the different terms are different points along the spectrum."