From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: [PATCH] pvcpuid: mask TSC invariant bit for various
	circumstances
Date: Thu, 29 Oct 2009 15:07:14 -0700
Message-ID: <4AEA1212.8080300@goop.org>
References: <8420df45-56fc-41a1-aa68-cb9a39da235f@default>
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To: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: "Xen-Devel (E-mail)" <xen-devel@lists.xensource.com>, Keir Fraser <keir.fraser@eu.citrix.com>
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On 10/28/09 09:27, Dan Magenheimer wrote:
> 3 = (a) IF processor supports rdtscp instruction:
>        rdtsc/p is native, Xen provides TSC_AUX and pvclock info
>     (b) IF processor doesn't support rdtscp instruction:
>        rdtsc/p is emulated (with degenerate TSC_AUX/pvclock info)
>   

How will this interact with operating systems which also want to use
TSC_AUX when rdtscp is available?

    J