From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: (XEN) traps.c:3071: GPF (0000): ffff82d0801d76b2 ->
 ffff82d080222806
Date: Mon, 3 Nov 2014 10:51:30 +0000
Message-ID: <54575E32.6040603@citrix.com>
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To: Stefan Bader <stefan.bader@canonical.com>, Xen-devel@lists.xen.org
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On 03/11/14 09:45, Stefan Bader wrote:
> I see the message from the subject on my Intel box whenever a guest (iirc even
> dom0) starts up. It is not fatal and everything seems ok. I am just curious
> about what might trigger this. The addresses look to be inside the hypervisor
> code. I was wondering whether there is a simple way to figure out what this
> relates to (likely need to look at the objdump of the unstripped hv module).
>
> Or has someone already looked into this and knows what likely is the cause?
>
> -Stefan

Specifically, the message indicates <type of fault>: faulting address ->
fixup address

It is probably a wrmsr, and a higher logging level will indicate this. 
My gut feeling is that it is dom0 attempting to load microcode using the
native method.

~Andrew