From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264226AbUDHJQP (ORCPT ); Thu, 8 Apr 2004 05:16:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264224AbUDHJQP (ORCPT ); Thu, 8 Apr 2004 05:16:15 -0400 Received: from sv1.valinux.co.jp ([210.128.90.2]:37843 "EHLO sv1.valinux.co.jp") by vger.kernel.org with ESMTP id S264226AbUDHJQL (ORCPT ); Thu, 8 Apr 2004 05:16:11 -0400 Date: Thu, 08 Apr 2004 18:16:10 +0900 From: IWAMOTO Toshihiro To: "Martin J. Bligh" Cc: IWAMOTO Toshihiro , linux-kernel@vger.kernel.org, lhms-devel@lists.sourceforge.net Subject: Re: [patch 0/3] memory hotplug prototype In-Reply-To: <29700000.1081361575@flay> References: <20040406105353.9BDE8705DE@sv1.valinux.co.jp> <29700000.1081361575@flay> User-Agent: Wanderlust/2.8.1 (Something) SEMI/1.14.3 (Ushinoya) FLIM/1.14.3 (=?ISO-8859-4?Q?Unebigory=F2mae?=) APEL/10.3 Emacs/21.2 (i386-debian-linux-gnu) MULE/5.0 (SAKAKI) MIME-Version: 1.0 (generated by SEMI 1.14.3 - "Ushinoya") Content-Type: text/plain; charset=US-ASCII Message-Id: <20040408091610.65C29706C3@sv1.valinux.co.jp> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org At Wed, 07 Apr 2004 11:12:55 -0700, Martin J. Bligh wrote: > > > This is an updated version of memory hotplug prototype patch, which I > > have posted here several times. > > I really, really suggest you take a look at Dave McCracken's work, which > he posted as "Basic nonlinear for x86" recently. It's going to be much > much easier to use this abstraction than creating 1000s of zones ... Well, I think his patch is orthogonal to mine. My ultimate target is IA64 and it will only support node-sized memory hotplugging. If you need fine-grained memory resizing, that shouldn't be hard to do. As others have pointed out, per section hotremovable is not as easy as per zone one, but we've done a similar thing for hugetlbfs support. Look for PG_again in Takahashi's patch. -- IWAMOTO Toshihiro