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] trampoline code in hvmloader

To: Jun Koi <junkoi2004@xxxxxxxxx>, "List: Xen Developers" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] trampoline code in hvmloader
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Fri, 07 Mar 2008 13:20:32 +0000
Delivery-date: Fri, 07 Mar 2008 05:21:41 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <fdaac4d50803070111u64484b6ai41d10c422e073121@xxxxxxxxxxxxxx>
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: AciAVgUHQ2SfkuxJEdyI9wAX8io7RQ==
Thread-topic: [Xen-devel] trampoline code in hvmloader
User-agent: Microsoft-Entourage/11.4.0.080122
On 7/3/08 09:11, "Jun Koi" <junkoi2004@xxxxxxxxx> wrote:

> I have a questions about the asm code at the top of hvmloader.c: This
> code overwrite the lower part of memory with the trampoline code.
> Doing that, it overwrites some interrupt vectors there. Why we dont
> care about that?

There are no interrupt vectors there at that time. The rombios initialises
the IDT and enables interrupt delivery.

 -- Keir



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

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