[betterunix2]

https://lkml.org/lkml/2017/12/27/2

It makes reference to the nature of the bug and explains why AMD's chips are not affected (from an AMD engineer).

[mywittyname]

I was making reference to this [1].

The original fix had a comment that literally said, "/* Assume for now that ALL x86 CPUs are insecure */" They've since added a check to exclude AMD processors.

[1] https://kernel.googlesource.com/pub/scm/linux/kernel/git/tip...

[betterunix2]

Same patch I think.