Physical Vendor Locking of CPUs

[MrPsycho]

Dark times lie ahead of 2nd hand market.

Vendor Locking AMD EPYC CPUs Great for Security at a Cost

TLDR:
AMD EPYC CPUs have a subprocessor that essentially should be considered a hardware “root of trust”. Along the many features it has to offer there is one that “enables hardware validated boot”, which essentially allows vendors to bind the processor to their own hardware, so the chain of trust cannot be compromised. It is supposed to protect against “remote attackers seeking to embed malware into platform’s firmware”.

Quotes come from AMD presentations/statements.

[Jarland]

Interesting. I like the implied intent, but does sound like a potential issue down the line.