https://news.ycombinator.com/item?id=4108557
https://news.ycombinator.com/item?id=1702200
He also wrote the original QEMU for machine emulation, long before native virtualization support was available in x86 CPUs.
https://news.ycombinator.com/item?id=4108557
https://news.ycombinator.com/item?id=1702200