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Re: [Xen-devel] [timer/ticks related] dom0 hang during boot on large 1TB

To: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>, "mukesh.rathor@xxxxxxxxxx" <mukesh.rathor@xxxxxxxxxx>
Subject: Re: [Xen-devel] [timer/ticks related] dom0 hang during boot on large 1TB system
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Mon, 21 Dec 2009 19:07:39 +0000
Cc: "kurt.hackel@xxxxxxxxxx" <kurt.hackel@xxxxxxxxxx>, Jeremy Fitzhardinge <jeremy@xxxxxxxx>, "Xen-devel@xxxxxxxxxxxxxxxxxxx" <Xen-devel@xxxxxxxxxxxxxxxxxxx>
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On 21/12/2009 18:20, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote:

> Not to say the problem can't or shouldn't be fixed in Xen.
> Keir, would bad things happen if construct_dom0 is done after
> scrub_heap_pages()?  Other than some time wastage because
> dom0's memory would get scrubbed just before it gets
> overwritten (which is admittedly a much bigger problem
> when dom0_mem is not specified in the Xen boot line
> on a machine with ginormous memory).

The problem is more likely that Xen system time started ticking some time
earlier during boot process. I doubt it is to do with ordering of
construct_dom0 versus boot-time scrubbing.

 -- Keir

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