This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


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
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Tue, 01 May 2007 23:29:50 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <AEC6C66638C05B468B556EA548C1A77D0116648A@trantor>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AceL+jFMXSqM6s7rQWm5iokOHfOp9wAUxI+gAA2WuS4=
Thread-topic: [Xen-devel] X86_64 and 4GB RAM using Flat Memory Model?
User-agent: Microsoft-Entourage/

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

Xen-devel mailing list