AMD64 Virtualization Codenamed "Pacifica" Technology Secure Virtual Machine Architecture Reference Manual See specifically chapter 3 May, 2005 <A HREF="http://vip.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/33047.pdf" target="_blank">http://vip.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/33047.pdf</A>