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Re: [Xen-devel] RAM security
| To: | Keir Fraser <keir@xxxxxxx>, Xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | Re: [Xen-devel] RAM security |
| From: | Jonathan Tripathy <jonnyt@xxxxxxxxxxx> |
| Date: | Mon, 06 Dec 2010 16:53:33 +0000 |
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| Delivery-date: | Mon, 06 Dec 2010 08:58:20 -0800 |
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On 06/12/10 16:52, Keir Fraser wrote: I guess in my head I'm comparing RAM scrubbing to dd if=/dev/zero, which takes longer as it's usually to diskOn 06/12/2010 08:31, "Jonathan Tripathy"<jonnyt@xxxxxxxxxxx> 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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