From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751437AbWD1SoE (ORCPT ); Fri, 28 Apr 2006 14:44:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751632AbWD1SoE (ORCPT ); Fri, 28 Apr 2006 14:44:04 -0400 Received: from e31.co.us.ibm.com ([32.97.110.149]:14818 "EHLO e31.co.us.ibm.com") by vger.kernel.org with ESMTP id S1751437AbWD1SoC (ORCPT ); Fri, 28 Apr 2006 14:44:02 -0400 Date: Fri, 28 Apr 2006 14:43:49 -0400 From: Vivek Goyal To: KAMEZAWA Hiroyuki Cc: Andrew Morton , linux-kernel@vger.kernel.org, lhms-devel@lists.sourceforge.net, ebiederm@xmission.com, nanhai.zou@intel.com Subject: Re: [Lhms-devel] Re: [PATCH] register hot-added memory to iomem resource Message-ID: <20060428184349.GA28994@in.ibm.com> Reply-To: vgoyal@in.ibm.com References: <20060427204904.5037f6ea.kamezawa.hiroyu@jp.fujitsu.com> <20060427160130.6149550f.akpm@osdl.org> <20060428092754.cf382d03.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060428092754.cf382d03.kamezawa.hiroyu@jp.fujitsu.com> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 28, 2006 at 09:27:54AM +0900, KAMEZAWA Hiroyuki wrote: > > And how is kdump to know that memory was hot-added? Do we generate a > > hotplug event? > > > A user program has to make memory section online from sysfs , anyway. > > The hotplug script for memory hotplug will run at memory hotplug event > from ACPI. If a user uses /probe interface (powerpc, x86_64), > he knows what he does. > > hot-add -> online memory -> kexec_load() is a scenario I think of. > Did a quick search but can't locate a memory hotplug agent. Can you give some pointers. Thanks Vivek