WARNING - OLD ARCHIVES

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/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] About IO

To: "Liu, Huahang" <huahang.liu@xxxxxxxxx>, "Li, Xin B" <xin.b.li@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] About IO
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Tue, 03 Apr 2007 07:29:04 +0100
Delivery-date: Mon, 02 Apr 2007 23:26:49 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <991B62EB36934C4EBD5B605518A724764C46F1@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
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: AcdyeZanoNJ6aPq6SKS+5oY9VtNsoAAAcRKAAAAiJ5AAxeRcEAAJerTV
Thread-topic: [Xen-devel] About IO
User-agent: Microsoft-Entourage/11.3.3.061214
On 3/4/07 02:57, "Liu, Huahang" <huahang.liu@xxxxxxxxx> wrote:

> Basically, I am interested about the following address:
> 0xFFFE0000 to 0xFFFF0000
> 
> I want to know is there already any handlers for this area.
> 
> If yes, where is the handler and what does it do?

There's no MMIO that close to the 4GB boundary. The last handler is at
0xfee00000, for the virtual IO-APIC.

> If no, how to add one?

See numerous examples (e.g., vlapic.c , vioapic.c) for how to add a handler
inside Xen.

 -- Keir



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>