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] [PATCH 2/3] remove saving/restoring method in Xend.

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH 2/3] remove saving/restoring method in Xend.
From: Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx>
Date: Fri, 24 Apr 2009 17:38:24 +0900
Cc: Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Kouya Shimura <kouya@xxxxxxxxxxxxxx>, Ross Philipson <Ross.Philipson@xxxxxxxxxx>
Delivery-date: Fri, 24 Apr 2009 01:39:47 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <C615ECDE.9492%keir.fraser@xxxxxxxxxxxxx>
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/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <20090423163429.9197.27C06F64@xxxxxxxxxxxxxxx> <C615ECDE.9492%keir.fraser@xxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
On Thu, 23 Apr 2009 10:01:02 +0100
Keir Fraser <keir.fraser@xxxxxxxxxxxxx> wrote:

> On 23/04/2009 09:27, "Yuji Shimada" <shimada-yxb@xxxxxxxxxxxxxxx> wrote:
> 
> > OK, I understand that my patches are also big. But I'm worried about
> > one problem for Xen 3.4. The problem is that devices are deassigned
> > before the reset on current Xen. Dom0 memory may be broken by DMA if
> > the problem is not fixed.
> > My patches fix the problem. I mean that devices are deassigned after
> > the reset with my patches.
> > 
> > I can work on making the patch just changing order of resetting/
> > deassigning devices if you need the fix for Xen 3.4.
> 
> If we stick with the existing pciback mechanisms and interfaces for 3.4
> (which is preferable at this point) will we simply break 3.4 branch as soon
> as the new pciback patches go into linux-2.6.18-xen when 3.5 opens? Or is
> there a story on backward compatibility between different pciback/xend
> versions?

Hi, Keir

I don't have any idea for backward compatibility between different
pciback/xend versions.
I give up being applied to linux-2.6.18-xen.

I will sent the patch to change the order of resetting/deassigning
device for Xen 3.4.

Thanks,
--
Yuji Shimada


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