From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yuji Shimada Subject: Re: [PATCH 2/3] remove saving/restoring method in Xend. Date: Thu, 23 Apr 2009 17:27:52 +0900 Message-ID: <20090423163429.9197.27C06F64@necst.nec.co.jp> References: <20090423115659.917F.27C06F64@necst.nec.co.jp> Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser , Ian Pratt Cc: "xen-devel@lists.xensource.com" , Ross Philipson , Kouya Shimura List-Id: xen-devel@lists.xenproject.org On Thu, 23 Apr 2009 08:22:49 +0100 Keir Fraser wrote: > On 23/04/2009 03:57, "Yuji Shimada" wrote: > > > Of course, it is better to reset in pciback. So Ross's patches seems > > to be nice. But as the future freeze is announced for Xen 3.4, I think > > these patches are too big to merge with it. I think it is better to > > merge these patches after Xen 3.4 is released. > > > > My patches are sufficient enough to make Xen 3.4 robust in resetting/ > > restoring devices. > > Your patch is rather big for 3.4 at this stage. I wasn't going to check it > in before the branch. Do people want them enough to shove them in? I'm > certainly not keen. > > -- Keir > Hi, Keir & Ian 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. Thanks, -- Yuji Shimada