From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752949Ab1HBBJm (ORCPT ); Mon, 1 Aug 2011 21:09:42 -0400 Received: from mga01.intel.com ([192.55.52.88]:3893 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750862Ab1HBBJh (ORCPT ); Mon, 1 Aug 2011 21:09:37 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.67,303,1309762800"; d="scan'208";a="34751440" Subject: Re: questions about memory hotplug From: Shaohua Li To: Larry Bassel Cc: "linux-mm@kvack.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" In-Reply-To: <20110801170850.GB3466@labbmf-linux.qualcomm.com> References: <20110729221230.GA3466@labbmf-linux.qualcomm.com> <20110730093055.GA10672@sli10-conroe.sh.intel.com> <20110801170850.GB3466@labbmf-linux.qualcomm.com> Content-Type: text/plain; charset="UTF-8" Date: Tue, 02 Aug 2011 09:09:36 +0800 Message-ID: <1312247376.15392.454.camel@sli10-conroe> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2011-08-02 at 01:08 +0800, Larry Bassel wrote: > > In use case #1 yes, maybe not in #2 (we can arrange it to be > at the end of memory, but then might waste memory as it may > not be aligned on a SPARSEMEM section boundary and so would > need to be padded). then maybe the new migrate type I suggested can help here for the non-aligned memory. Anyway, let me do an experiment. Thanks, Shaohua