From: Jonathan Tripathy <jonnyt@abpni.co.uk>
To: Keir Fraser <keir@xen.org>, Xen-devel@lists.xensource.com
Subject: Re: RAM security
Date: Mon, 06 Dec 2010 16:31:49 +0000 [thread overview]
Message-ID: <4CFD0FF5.1010808@abpni.co.uk> (raw)
In-Reply-To: <C9224EBA.153AD%keir@xen.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
next prev parent reply other threads:[~2010-12-06 16:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <46C13AA90DB8844DAB79680243857F0F0AFF44@server1.ABPNI.local>
2010-12-06 14:35 ` RAM security Jonathan Tripathy
2010-12-06 14:49 ` George Dunlap
2010-12-06 15:13 ` Jonathan Tripathy
2010-12-06 15:35 ` Jonathan Tripathy
2010-12-06 16:26 ` Keir Fraser
2010-12-06 16:31 ` Jonathan Tripathy [this message]
2010-12-06 16:52 ` Keir Fraser
2010-12-06 16:53 ` Jonathan Tripathy
2010-12-06 17:05 ` Jan Beulich
2010-12-06 17:12 ` Jonathan Tripathy
2010-12-06 17:17 ` Jonathan Tripathy
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