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

RE: [Xen-devel] RE: information leaking between domains viagranted pages

To: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, "Santos, Jose Renato G" <joserenato.santos@xxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] RE: information leaking between domains viagranted pages?
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Tue, 4 Mar 2008 20:43:34 +1100
Delivery-date: Tue, 04 Mar 2008 01:44:03 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <C3F2C8C6.1D652%keir.fraser@xxxxxxxxxxxxx>
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: <AEC6C66638C05B468B556EA548C1A77D013DBE68@trantor> <C3F2C8C6.1D652%keir.fraser@xxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: Ach9qLXF4BxOPME/Qtm5dC52XyjJVwAEJdzAAAXR+1AAAQFcTAAAEfDAAAGb0IsAAByP8A==
Thread-topic: [Xen-devel] RE: information leaking between domains viagranted pages?
> Yes, it's a little surprising, but experiments showed that, even with
> lareg
> datagrams, the performance of copying versus flipping was pretty
> comparable.
> With normal Ethernet MTU copying was significantly faster. Also
copying
> gives us more flexibility wrt where we place the data in the domU
page. So
> flipping is now deprecated.
> 

Even with large send offload?

Thanks for the explanation.

James

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel