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Date:      Sat, 08 Nov 2014 09:57:12 -0800
From:      Peter Grehan <grehan@freebsd.org>
To:        Marcel Moolenaar <marcel@xcllnt.net>
Cc:        virtualization@freebsd.org
Subject:   Re: [current] bhyve under VMware borked?
Message-ID:  <545E5978.2010900@freebsd.org>
In-Reply-To: <BA848416-08C3-4B23-8BBB-C7A293909318@xcllnt.net>
References:  <3054C397-B9F4-44A7-8D71-FF83CB058671@mac.com> <545D160E.7060208@freebsd.org> <BA848416-08C3-4B23-8BBB-C7A293909318@xcllnt.net>

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Hi Marcel,

>> What version of VMWare and host are you using ?
>
> This is VMware Fusion 6.0.5 (2209127) running on Mac OS X 10.10.

  Ok, looks like the problem still exists in the wild :(

  Fusion 7 doesn't have this issue so there's always the upgrade option :)

> Ok. If we don't depend on PAT-related exits, then I definitely would
> appreciate preserving the -stable behaviour. Maybe we should not check
> for the PAT-related exists in the first place? I mean if we don't need
> them or depend on them to be there at all...

  bhyve does depend on h/w save/restore of the PAT MSR, and this is the 
case for all bare metal that is supported.

  For the nested case, bhyve used to trap/emulate PAT MSR accesses and 
not propagate them to the host. I'll look at resurrecting that code.

later,

Peter.



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