https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234733
--- Comment #21 from Conrad Meyer <c...@freebsd.org> --- (In reply to sigsys from comment #20) c0010061 doesn't follow c00l0062 on my Zen1 + ASRock X370 system, for example. :-) Maybe it's a Zen+ thing, maybe it's a BIOS thing, who knows. In any case I agree we don't really understand what it does. It doesn't seem to line up with the documentation, and I don't expect ignoring it to be harmful to modern AMD hardware for power/thermal reasons. (I expect HW made in the last ten years to thermal throttle regardless of SW-set P-state. My concern around removing it entirely, as Linux seems to, is mostly that doing so might be harmful for the older CPUs this driver supports (k10, k11). But -- clearly not a problem for Linux.) I like your suggestion of a sysctl/tunable. I propose defaulting to "ignore c0010061." I am having trouble coming up with an accurate and descriptive docstring, though. "If set, limit requested P-states to MSR c0010061[0:2]" isn't exactly useful to end users, probably. -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
