AMD Publishes Latest Linux Patches For Enabling SEV-SNP Guest Support

[phoronix]

Phoronix: AMD Publishes Latest Linux Patches For Enabling SEV-SNP Guest Support

One of the additions with EPYC 7003 "Milan" processors introduced last year was SEV-SNP as the "Secure Nested Paging" addition to AMD's Secure Encrypted Virtualization found with EPYC processors. While they have maintained an out-of-tree Linux source repository with the SEV-SNP patches, the mainline kernel is still lacking support for these latest security features but the code continues to undergo revisions and review for its eventual upstreaming...

https://www.phoronix.com/scan.php?page=news_item&px=AMD-SEV-SNP-Guest-v9

[deusexmachina]

So much conflicting information on which AMD CPUs can have SEV and/or SME. Seems regular Ryzen CPUs can use mem_encrypt, but I don't have clarity on what actually works for which CPUs.