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To: kostikbel@gmail.com, petefrench@ingresso.co.uk
Subject: Re: Ryzen issues on FreeBSD ? (with sort of workaround)
Cc: avg@freebsd.org, eric@vangyzen.net, freebsd-stable@freebsd.org,
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From: Pete French <petefrench@ingresso.co.uk>
Date: Thu, 05 Jul 2018 11:43:29 +0100
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> It does not make any sense to even try to access the chicken bits
> MSRs when running under virtualization.  It is the duty of the
> hypervisor to configure hardware. 

I would tend to agree with you :-) I was kind of surprised to read that they
are actually saved and restored as part of a VM context switch in fact.

> I updated the patch.

Thanks I shall try this now on my workstation and the Epyc virtual machine

-pete.