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] [VTD][PATCH] Support intra-domain shared interrupt

To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] [VTD][PATCH] Support intra-domain shared interrupt
From: "Han, Weidong" <weidong.han@xxxxxxxxx>
Date: Wed, 7 Nov 2007 23:02:12 +0800
Cc: "Kay, Allen M" <allen.m.kay@xxxxxxxxx>
Delivery-date: Wed, 07 Nov 2007 07:02:57 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <C3549687.17E6D%Keir.Fraser@xxxxxxxxxxxx>
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>
References: <08DF4D958216244799FC84F3514D70F00ABB17@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <C3549687.17E6D%Keir.Fraser@xxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcgfbbYOsSWYB6MMQDuBGkYt+XjCJwAEwx4KAAASPxAAAXKGpgAAClDAAAJfMewAbWqM0A==
Thread-topic: [Xen-devel] [VTD][PATCH] Support intra-domain shared interrupt
Keir, how about this intra-domain shared interrupt patch? Attached patch
fixes memory leak issue and updates timeout function. Thanks.

-- Weidong 

Keir Fraser wrote:
> On 5/11/07 08:52, "Han, Weidong" <weidong.han@xxxxxxxxx> wrote:
> 
>> that situation two devices with different pyhsical IRQs getting
>> aliased to the same guest GSI is hard to occur. And we need one
>> guest GSI mapped to only one physical IRQ, or we can't know which
>> device issues the guest GSI. Ideally, if we can make 1:1 mapping
>> between guest GSI and physcial IRQ, the intra-domain shared
>> interrupt can naturally handled by guest. 
> 
> Ah, that's true. I suppose you can assign virtual devfn locations for
> devices to purposely avoid aliasing in GSI space. What do you do about
> aliasing into the ISA IRQ space?
> 
>  -- Keir

Attachment: share-2.patch
Description: share-2.patch

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