Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757447Ab3CFLQ7 (ORCPT ); Wed, 6 Mar 2013 06:16:59 -0500 Received: from mga02.intel.com ([134.134.136.20]:26873 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753951Ab3CFLQ6 (ORCPT ); Wed, 6 Mar 2013 06:16:58 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,794,1355126400"; d="scan'208";a="272093318" Message-ID: <513725A8.8090904@linux.intel.com> Date: Wed, 06 Mar 2013 03:16:56 -0800 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130219 Thunderbird/17.0.3 MIME-Version: 1.0 To: Tetsuo Handa CC: Dave Hansen , Borislav Petkov , linux-kernel@vger.kernel.org Subject: Re: [3.9-rc1 x86] Bug in ioremap code? References: <201302060035.GCJ00057.FLHMOOFtJFSQOV@I-love.SAKURA.ne.jp> <201303050015.GGI39081.LOVFtOFHQOJFSM@I-love.SAKURA.ne.jp> <201303052031.JFG81705.FSOOFQHJMVFOLt@I-love.SAKURA.ne.jp> <201303060041.AIF15342.tJFOHLQFFOMVSO@I-love.SAKURA.ne.jp> <20130305180650.GD4914@pd.tnic> <201303060628.CBG00578.OJtMFFHLQVSFOO@I-love.SAKURA.ne.jp> <51367104.5050200@linux.vnet.ibm.com> <20130305224432.GD27022@pd.tnic> <51368C45.40303@linux.vnet.ibm.com> <201303061016.r26AGkVV038627@www262.sakura.ne.jp> In-Reply-To: <201303061016.r26AGkVV038627@www262.sakura.ne.jp> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 716 Lines: 25 On 03/06/2013 02:16 AM, Tetsuo Handa wrote: > > But I found that this bug occurs only when the system has little RAM. > > With 892MB RAM where /proc/meminfo would show HighTotal > 0, > this bug does not occur. > > HighTotal: 4040 kB > LowTotal: 873960 kB > > With 888MB RAM where /proc/meminfo would show HighTotal == 0, > this bug occurs. > OK, this makes sense. I guess we have a bug in the case where we do not exhaust lowmem. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/