From: Keir Fraser <keir@xen.org>
To: Jonathan Tripathy <jonnyt@abpni.co.uk>, Xen-devel@lists.xensource.com
Subject: Re: RAM security
Date: Mon, 06 Dec 2010 08:52:04 -0800 [thread overview]
Message-ID: <C92254B4.153B9%keir@xen.org> (raw)
In-Reply-To: <4CFD0FF5.1010808@abpni.co.uk>
On 06/12/2010 08:31, "Jonathan Tripathy" <jonnyt@abpni.co.uk> wrote:
>>> 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..
It probably takes just a couple of seconds to scrub 8GB. Xen does the
scrubbing immediately before starting dom0, and you should see it say
'Scrubbing RAM...' and extra dots continur to appear until scrubbing is
complete.
-- Keir
next prev parent reply other threads:[~2010-12-06 16:52 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
2010-12-06 16:52 ` Keir Fraser [this message]
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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