Here's the second part of The Inq's trilogy on AMD's virtualization technology. Here's a snip:

FIRST A LITTLE primer on memory management on x86 hardware, vastly simplified for sanity and brevity. In the good old days, you could only run a single program on a computer at once, and life was easy. Soon someone had the bright idea of running multiple programs on the same machine at the same time, which led to all sorts of problems..



Link: The Inquirer