AMD Memory Encryption whitepaper:
http://amd-dev.wpengine.netdna-cdn.com/wordpress/media/2013/12/AMD_Memory_Encryption_Whitepaper_v7-Public.pdf
-Secure Encrypted Virutualization Key Management:
+Secure Encrypted Virtualization Key Management:
[1] http://support.amd.com/TechDocs/55766_SEV-KM API_Specification.pdf
KVM Forum slides: