[Bug 219399] System panics after several hours of 14-threads-compilation orgies using poudriere on AMD Ryzen...

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219399

--- Comment #91 from Nils Beyer <nbe at renzel.net> ---
(In reply to Don Lewis from comment #89)

really interessting research you've done there; big thanks for that. If the
shifting of the shared page really helps getting the system stable, is it still
a hardware problem/bug then or more a software problem? If hardware, is that
fixable by a microcode update or is the CPU design per-se "incompatible"? What
do you think?

Anyways, I've applied your patch and started a poudriere build. Based on your
experiences, I'm somewhat optimistic now. I'll let you know how's it going
here.

The "ryzen_segv_test" still fails despite the patch, the only way to circumvent
that is to disable SMT. But that's no final option for me...

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