From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with SMTP id 577276B009E for ; Fri, 21 Aug 2009 11:48:38 -0400 (EDT) Received: from fgwmail7.fujitsu.co.jp (fgwmail7.fujitsu.co.jp [192.51.44.37]) by fgwmail9.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id n7L0bUma022693 for (envelope-from kamezawa.hiroyu@jp.fujitsu.com); Fri, 21 Aug 2009 09:37:30 +0900 Received: from m2.gw.fujitsu.co.jp ([10.0.50.72]) by fgwmail7.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id n7L0atdn011756 for (envelope-from kamezawa.hiroyu@jp.fujitsu.com); Fri, 21 Aug 2009 09:36:55 +0900 Received: from smail (m2 [127.0.0.1]) by outgoing.m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 54B9145DE51 for ; Fri, 21 Aug 2009 09:36:55 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (s2.gw.fujitsu.co.jp [10.0.50.92]) by m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 327E245DD77 for ; Fri, 21 Aug 2009 09:36:55 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 165B71DB8038 for ; Fri, 21 Aug 2009 09:36:55 +0900 (JST) Received: from m107.s.css.fujitsu.com (m107.s.css.fujitsu.com [10.249.87.107]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id C58301DB8040 for ; Fri, 21 Aug 2009 09:36:51 +0900 (JST) Date: Fri, 21 Aug 2009 09:34:52 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [Patch 8/8] kexec: allow to shrink reserved memory Message-Id: <20090821093452.ead96b2d.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <4A8D144C.5050005@redhat.com> References: <20090812081731.5757.25254.sendpatchset@localhost.localdomain> <20090812081906.5757.39417.sendpatchset@localhost.localdomain> <4A83893D.50707@redhat.com> <4A83CD84.8040609@redhat.com> <4A8927DD.6060209@redhat.com> <20090818092939.2efbe158.kamezawa.hiroyu@jp.fujitsu.com> <4A8A4ABB.70003@redhat.com> <20090818172552.779d0768.kamezawa.hiroyu@jp.fujitsu.com> <4A8A83F4.6010408@redhat.com> <20090819085703.ccf9992a.kamezawa.hiroyu@jp.fujitsu.com> <4A8B6649.3080103@redhat.com> <20090819171346.aadfeb2c.kamezawa.hiroyu@jp.fujitsu.com> <4A8D144C.5050005@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Amerigo Wang Cc: "Eric W. Biederman" , linux-kernel@vger.kernel.org, tony.luck@intel.com, linux-ia64@vger.kernel.org, linux-mm@kvack.org, Neil Horman , Andi Kleen , akpm@linux-foundation.org, bernhard.walle@gmx.de, Fenghua Yu , Ingo Molnar , Anton Vorontsov List-ID: On Thu, 20 Aug 2009 17:15:56 +0800 Amerigo Wang wrote: > > The, problem is whether memmap is there or not. That's all. > > plz see init sequence and check there are memmap. > > If memory-for-crash is obtained via bootmem, > > Don't you try to free memory hole ? > > > > Hi, > > It looks like that mem_map has 'struct page' for the reserved memory, I > checked my "early_node_map[] active PFN ranges" output, the reserved > memory area for crash kernel is right in one range. Am I missing > something here? > > I don't know why that oops comes out, maybe because of no PTE for thoese > pages? > Hmm ? Could you show me the code you use ? Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org