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-ia64-devel

RE: [Xen-devel][RFC]degradation on IPF due to hypercall set irq

To: "Keir Fraser" <keir@xxxxxxxxxxxxx>
Subject: RE: [Xen-devel][RFC]degradation on IPF due to hypercall set irq
From: "Xu, Anthony" <anthony.xu@xxxxxxxxx>
Date: Fri, 24 Nov 2006 23:53:52 +0800
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Fri, 24 Nov 2006 07:54:02 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
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: AccN5wYmUmir46SdT8a+ptVHeNZ8fgAHbs2mAACOJaAAASp7iwAAG0VmAAB2zNAAAmxzrgAAEGDgAAAZWmIAAC5KoAAAk0fTAAD34HAAAGv3kgBSjAIgAAqAtLAABhntKgAJf9CgAAJx6G0AAMZ+oA==
Thread-topic: [Xen-devel][RFC]degradation on IPF due to hypercall set irq
Keir Fraser write on 2006年11月24日 23:29:
> On 24/11/06 14:45, "Xu, Anthony" <anthony.xu@xxxxxxxxx> wrote:
> 
>> Until now, I can't see hypercall is faster than share PIC line.
>> 
>> Can you enlighten me why we use hypercall?
> 
> I didn't change it for speed but because it's cleaner. I believe it
> can be made no slower, with a bit of effort. x86 certainly won't be
> reverting to the shared state.  

Can't share PIC line be done in a clean way?
I don't think so.
I think which one get better performance wins.

--Anthony


> 
>  -- Keir

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