On Mon, Aug 27, 2018 at 3:21 PM Meowthink <[email protected]> wrote: > That's kib, who has committed things in that script to both 12 [1] and > stable/11 [2]. > > Unfortunately, that's for Ryzens family 17h model 00h-0fh, whereas my > Ryzen 5 2400G's model is 11h. > > On the microcode. It shall be updated through UEFI/BIOS updates. I > think mine is now PinnaclePI-AM4_1.0.0.4 with microcode patchlevel > 0x810100b. > > Seems like ... the only thing I can do is sit down and wait?
The revision https://svnweb.freebsd.org/base/head/sys/x86/x86/cpu_machdep.c?r1=336763&r2=336762&pathrev=336763 works around the mwait issue, i.e. it sets sysctl machdep.idle_mwait=0 sysctl machdep.idle=hlt Now it may or may not relate to your problem, but it appears that Ryzen 2400G also has another issue with HLT, see the DragonFly bug report https://bugs.dragonflybsd.org/issues/3131 which AMD is aware of and is possibly working on, but it may not have appeared in the errata yet. The bug report says that until this is fixed, the workaround is to also disable HLT in cpu_idle. I am not sure what is the correct value for the sysctl on FreeBSD, perhaps sysctl machdep.idle=0 or some other value? Cheers Peeter -- _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
