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] [NEO 1:1] Nativedom 1:1 Mapping

To: Guy Zana <guy@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [NEO 1:1] Nativedom 1:1 Mapping
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Tue, 25 Sep 2007 16:18:16 +0100
Delivery-date: Tue, 25 Sep 2007 08:14:04 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <9392A06CB0FDC847B3A530B3DC174E7B037F4177@xxxxxxxxxxxxxxxxxxxxxxxxxx>
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: Acf7nOHWOm+J+TgmQSWCP5gB/ehOoAAjI5gIAGo1EYAAbUHRWw==
Thread-topic: [Xen-devel] [NEO 1:1] Nativedom 1:1 Mapping
User-agent: Microsoft-Entourage/
On 25/9/07 16:05, "Guy Zana" <guy@xxxxxxxxxxxx> wrote:

> I sent the patch for review (not for inclusion).
> I know you are not very fond of the E820_1TO1 addition.
> You mean it would be cleaner to mark these 1:1 chunks as reserved? Or do you
> suggest to do that completely differently?
> Can you elaborate on that please?

Firstly, yes: I would mark the region as reserved or remove it completely,
rather than marking it with a newly-invented type code. Secondly I would
think you only need to modify boot_e820, probably using the helper function
reserve_in_boot_e820(), because that will suffice to hide the memory from
the normal memory allocator. And that's all you're trying to do, right?

 -- Keir

Xen-devel mailing list