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] VT-x and frontend/backend drivers

To: "Mark Ryden" <markryde@xxxxxxxxx>, "Xen Mailing List" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] VT-x and frontend/backend drivers
From: "Ling, Xiaofeng" <xiaofeng.ling@xxxxxxxxx>
Date: Tue, 10 Jan 2006 22:14:40 +0800
Delivery-date: Tue, 10 Jan 2006 14:21:30 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
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>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcYUSe0mYKGancP3TcWlTKPH6NUlkgBphKAQ
Thread-topic: [Xen-devel] VT-x and frontend/backend drivers
We already have patches for para-dirver support sent to this list before, you 
can
search it if you need.

Mark Ryden <> wrote:
> Hello,
> 
>   As I saw in this mailing list, there should be some
>       emulation solution for drivers when using VT-x processors.
> 
> See for example :
> http://lists.xensource.com/archives/html/xen-devel/2005-12/msg00763.html
> 
> My question is this;
> 
>   As I understand, the VMX support in the new  VT-x processors
>  enables us to prevent Guest OSs from performing unwanted
>   instructions (HLT , for example). This is done by using the root
> and non-root VMX operation. Thus , we don't use paravirtualization
> and we can run unmodified guest. Is there a possibility or any
> intention of using the backend-frontend solution of Xen (maybe with
> some fixes) when using VT-x processors ? wouldn't it be much better
> in terms of performance than using hardware emulation (based on QEMU
> maybe)?      
> 
> Regards,
>       --MR
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

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

<Prev in Thread] Current Thread [Next in Thread>