Re: this previous post:
Al Stone of Red Hat published an updated version of 3 documents giving guidance on using _DSD ACPI:
[RFC DSD v3 00/04] How to Use the ACPI _DSD Device Properties UUIDs
A copy of the ChangeLog is also attached so that you can see what the primary changes were for this second version.
https://github.com/ahs3/dsd/tree/master/documentation
https://github.com/ahs3/dsd/commit/7fbdce494b9b7b952e709e43b8dbbfd5cf8d4fcb
https://github.com/ahs3/dsd/commits/master
Click to access _DSD-device-properties-UUID.pdf
Click to access _DSD-hierarchical-data-extension-UUID-v1.pdf
Firmware Security 