My Hyper-V Resource Kit co-author, Janique Carbone, and Tim Mueting - AMD Product Manager have gotten together to produce a Q&A on AMD’s Rapid Virtualization Indexing (RVI) technology in the latest AMD Opteron processor line. Hyper-V R2 uses this technology to enable Second Level Address Translation (SLAT) to offload work from the hypervisor to hardware.

The entry also has links to additional information on RVI and other AMD technology. It is good reference and read.