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] HVM vs. PV in Reliability

To: Yutao Liu <universalbillow@xxxxxxxxx>
Subject: Re: [Xen-devel] HVM vs. PV in Reliability
From: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Date: Mon, 21 Feb 2011 10:25:36 +0000
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Mon, 21 Feb 2011 02:42:22 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <AANLkTimOpOgJu5tOmdXKmiXYRMUAmYUS+DC-Qw7hETwQ@xxxxxxxxxxxxxx>
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: <AANLkTimOpOgJu5tOmdXKmiXYRMUAmYUS+DC-Qw7hETwQ@xxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.5.20 (2009-06-14)
At 12:55 +0000 on 20 Feb (1298206540), Yutao Liu wrote:
> Hello,I'm wondering are there any datum that can compare the 
> reliability/availability/dependability of HVM and PV, especially the driver 
> of them?
> For example, how many bugs found in the drivers of HVM and PV? Can any 
> experimental datum tell HVM model is safer or otherwise?...
> If a driver in HVM crashed, will it affect DomU, Dom0, or others? and what 
> about PV?
> Is there some research or paper talk about this?

The conventional wisdom is that since HVM has a much bigger TCB it's
probably in some sense less secure.  I don't know whether anyone has
done any serious measurement or analysis of that though.

Tim.

-- 
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, Xen Platform Team
Citrix Systems UK Ltd.  (Company #02937203, SL9 0BG)

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

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