[Bug 218262] [hwpstate] does not set overclocked frequency on AMD Ryzen CPU

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Fri Sep 29 20:41:55 UTC 2017


--- Comment #5 from Greg V <greg at unrelenting.technology> ---
(In reply to Conrad Meyer from comment #3)
Oh. FIDVID is for K7 processors, Family 17h is a newer generation, K8. That's
why AMD doesn't mention FIDVID in the docs. Anyway… 

This interesting Linux patch https://lwn.net/Articles/443375/ unified AMD and
Intel p-state handling, they basically just select between functions that write
to different MSRs. And they do write to 0xc0010062.


I tried making the loop longer (1000 iterations) and writing in the loop, still
it doesn't read the right value :(

You are receiving this mail because:
You are the assignee for the bug.

More information about the freebsd-bugs mailing list