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Re: [Xen-devel] X86_64 and 4GB RAM using Flat Memory Model?

To: James Harper <james.harper@xxxxxxxxxxxxxxxx>, John Hannfield <hal9020@xxxxxxxxx>
Subject: Re: [Xen-devel] X86_64 and 4GB RAM using Flat Memory Model?
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Wed, 02 May 2007 07:32:13 +0100
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On 2/5/07 01:07, "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote:

> Just a suggestion, I had all sorts of problems with funny memory maps
> when I was trying to get gPXE (the next version of Etherboot) running on
> a particular machine. I can't remember exactly what the problem was but
> it was something about overlapping memory regions, or a zero sized
> memory region.

That might be worth looking into, although I don't think GRUB actually does
much processing of the e820 entries. Afaics it just stores them away in
order, prints them on request, and feeds them to multiboot kernels that ask
for them.

 -- Keir



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