It did show up in somebody's hardware. Azul made (and is still making) hardware ...

cwzwarich on Aug 4, 2012 | parent | context | favorite | on: "It’s done in hardware so it’s cheap"

It did show up in somebody's hardware. Azul made (and is still making) hardware for Java that does this. They also release an x86 JVM that is able to fake it a bit by using HW virtualization support and double mapping pages.