From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: Live migration fails due to c/s 20627
Date: Tue, 15 Dec 2009 22:19:11 -0800
Message-ID: <4B287BDF.8020308@goop.org>
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To: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: xen-devel@lists.xensource.com, kurt.hackel@oracle.com, "Dugger,
	Donald D" <donald.d.dugger@intel.com>, "Xu,
	Dongxiao" <dongxiao.xu@intel.com>, Keir Fraser <keir.fraser@eu.citrix.com>, "Nakajima,
	Jun" <jun.nakajima@intel.com>, "Zhang, Xiantao" <xiantao.zhang@intel.com>
List-Id: xen-devel@lists.xenproject.org

On 12/15/2009 08:14 PM, Dan Magenheimer wrote:
> My argument is simply that if TSC_AUX cannot ALWAYS
> be trusted by an application, apps will NEVER trust it.
> And if apps NEVER trust it, why expose it at all?
>    

The cpu/node info is only of heuristic value anyway; it is never 
trustworthy in an absolute sense.  Apps just use it to try to optimise 
their own memory allocation and use patterns, but they can't rely on 
that info for actual correctness.

     J