From mboxrd@z Thu Jan  1 00:00:00 1970
From: Luke S Crawford <lsc@prgmr.com>
Subject: Re: (XEN) Xen BUG at amd_nonfatal.c:165 on a new amd g34
	board
Date: 15 Jul 2010 01:40:27 -0400
Message-ID: <m3sk3ll2us.fsf@luke.xen.prgmr.com>
References: <C8102100.1408D%keir.fraser@eu.citrix.com>
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Keir Fraser <keir.fraser@eu.citrix.com> writes:

> > I think the mce boot parameter should, when disabled, cause the MCE feature
> > bits to be removed from Xen's copy of CPUID feature flags. That would easily
> > disable all MCE logic throughout Xen.
> 
> Actually I think the attached patch should work, in conjunction with
> specifying no-mce (4.0/unstable) or nomce (3.4) as a Xen boot parameter. Let
> me know if it works okay for you.
> 
> I've applied the patch to xen-unstable as c/s 21360.


This still works swimmingly on xen 3.4... but I'm starting to 
flirt with xen 4.0/pvops  and while it looks like your patch is in there,
nomce, no-mce, mce=off and mce=no  all appear to do nothing, and my box 
reboots in the same place it did before:

(XEN) Panic on CPU 0:
(XEN) Xen BUG at amd_nonfatal.c:162