From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tang Chen Subject: Re: [PATCH] Do not use cpu_to_node() to find an offlined cpu's node. Date: Thu, 18 Oct 2012 10:51:31 +0800 Message-ID: <507F6EB3.7030705@cn.fujitsu.com> References: <1349665183-11718-1-git-send-email-tangchen@cn.fujitsu.com> <1349780256.7880.12.camel@twins> <1349815676.7880.85.camel@twins> <1349860216.7880.105.camel@twins> <20121010133709.7eaefcdb.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-numa-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: David Rientjes Cc: Andrew Morton , Peter Zijlstra , mingo@redhat.com, miaox@cn.fujitsu.com, wency@cn.fujitsu.com, linux-kernel@vger.kernel.org, linux-numa@vger.kernel.org On 10/18/2012 08:52 AM, David Rientjes wrote: > On Wed, 10 Oct 2012, David Rientjes wrote: > > Ok, so it's been a week and these patches are still in -mm. This is what > I was afraid of: patches that both Peter and I nacked sitting in -mm and > allow a NULL pointer dereference because no alternative patch exists yet > to fix the issue correctly. > > Tang and Wen, are you intending on addressing these problems (i.e. not > touching the acpi code at all and rather clearing cpu-to-node mappings at > node hot-remove) as we've discussed or do I need to do it myself? Hi David, We are working on this problem. Since it is complicated, it really takes us some time. Sorry for the delay. :) Actually, we intend to clear cpu-to-node mappings when a whole node is removed. But the node hot-plug code is still under development, so I think Wen will send a fix patch soon. :) Thanks. > > Thanks. >