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] WP flag in CR0, setting

from [Keir Fraser] [Permanent Link][Original]
To: Simon Kagstrom <simon.kagstrom@xxxxxx>
Subject: Re: [Xen-devel] WP flag in CR0, setting
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Thu, 15 Jun 2006 09:08:37 +0100
Cc: xen-devel list <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Thu, 15 Jun 2006 01:08:51 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <87zmge26i3.wl%simon.kagstrom@xxxxxx>
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/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <87y7vzoq6e.wl%simon.kagstrom@xxxxxx> <ecb1312515704916b90d2c4d1f89a695@xxxxxxxxxxxx> <87zmge26i3.wl%simon.kagstrom@xxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 

On 15 Jun 2006, at 09:00, Simon Kagstrom wrote:


We can't support this. We rely on write protection for all sorts of
things (e.g., prevent guest write access to page tables). You'll have
to temporarily make the mapping writable, or make a kernel-private
writable mapping.


Thanks for the explanation. Would the WP flag work in a HVM setting?


It may not be supported right now, but it would be easy to do so if not.

 -- Keir


_______________________________________________
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:  Re: [Xen-devel] WP flag in CR0, setting, Simon Kagstrom
Next by Date:  [Xen-devel] PATCH (and RFC): new dom0 hypercall: DOM0_DOMAIN_SETUP, Tristan Gingold
Previous by Thread:  Re: [Xen-devel] WP flag in CR0, setting, Simon Kagstrom
Next by Thread:  RE: [Xen-devel] WP flag in CR0, setting, Nakajima, Jun
Indexes:  [Date] [Thread] [Top] [All Lists]
 
   

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