Ryzen lockup on bhyve was (Re: new Ryzen lockup issue ?)

Peter Grehan grehan at freebsd.org
Sun Feb 25 17:51:45 UTC 2018

Hi Mike,

  (moving this to -virtualization)

> Actually I can confirm the same sort of hard lockup happens on my Epyc
> board with RELENG11.  It also happens in current. I will file a PR and
> post on freebsd-current in case someone has any suggestions on how to
> try and figure out whats going on.

  I could reproduce this on a Ryzen 1700 with HT enabled - it took ~700 
seconds, and the entire machine locked up.

  An interesting point is a single VM was able to run to completion.

  I'll keep testing with various combinations of numbers of VMs, 
different vCPUs per VM, and pinning guest vCPUs.



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