From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jonathan Tripathy <jonnyt@abpni.co.uk>
Subject: Re: RAM security
Date: Mon, 06 Dec 2010 16:31:49 +0000
Message-ID: <4CFD0FF5.1010808@abpni.co.uk>
References: <C9224EBA.153AD%keir@xen.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <C9224EBA.153AD%keir@xen.org>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Keir Fraser <keir@xen.org>, Xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org


> Xen always scrubs memory on behalf of a dead domain.
>
>> 3) If the physical server was shutdown (e.g. plug pulled), I'm guessing
>> this will presetn a problem?
> Xen scrubs all memory during boot, unless told not to via a boot parameter.
>
Now this bit of code makes me happy!

Just wondering, if Xen scrubs all memory during boot, why is booting the 
Hypervisor so fast? My machine has 8GB of RAM and starts nice and snappy..

>> 4) Why doesn't Xen scrub the RAM before giving it to the DomU?
> It does in the above circumstances. Otherwise it is up to the domU, and why
> not.
>

I think that with the on-booting and the on-destroy scrubbing, my 4) 
point above is moot :)

Cheers