WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 		  
Home Products Support Community News
 
   
 

xen-devel

[Top] [All Lists]
<prev [Date] next>
[Advanced]
 <prev [Thread] next>

Re: [Xen-devel] [PATCH] pvcpuid: mask TSC invariant bit for various circ

from [Jeremy Fitzhardinge] [Permanent Link][Original]
To: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] pvcpuid: mask TSC invariant bit for various circumstances
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Thu, 29 Oct 2009 15:07:14 -0700
Cc: "Xen-Devel \(E-mail\)" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Delivery-date: Thu, 29 Oct 2009 15:07:33 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <8420df45-56fc-41a1-aa68-cb9a39da235f@default>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <8420df45-56fc-41a1-aa68-cb9a39da235f@default>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20091014 Fedora/3.0-2.8.b4.fc11 Lightning/1.0pre Thunderbird/3.0b4 
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

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
[More with this subject...]
<Prev in Thread] Current Thread [Next in Thread>
Previous by Date:  [Xen-devel] Re: [PATCH Linux 2.6.31] Add hugepage support to the balloon driver, Jeremy Fitzhardinge
Next by Date:  Re: [Xen-devel] Strange error in domU after dom0 update, Jeremy Fitzhardinge
Previous by Thread:  Re: [Xen-devel] [PATCH] pvcpuid: mask TSC invariant bit for various circumstances, Keir Fraser
Next by Thread:  RE: [Xen-devel] [PATCH] pvcpuid: mask TSC invariant bit for various circumstances, Dan Magenheimer
Indexes:  [Date] [Thread] [Top] [All Lists]
 
   

Copyright , Citrix Systems Inc. All rights reserved. Legal and Privacy