From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760111AbYEMM7l (ORCPT ); Tue, 13 May 2008 08:59:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756924AbYEMM7c (ORCPT ); Tue, 13 May 2008 08:59:32 -0400 Received: from one.firstfloor.org ([213.235.205.2]:53015 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755010AbYEMM7c (ORCPT ); Tue, 13 May 2008 08:59:32 -0400 Message-ID: <482990AB.7070905@firstfloor.org> Date: Tue, 13 May 2008 14:59:23 +0200 From: Andi Kleen User-Agent: Thunderbird 1.5.0.12 (X11/20060911) MIME-Version: 1.0 To: Johannes Weiner CC: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Ingo Molnar , Yinghai Lu , Andrew Morton , Linus Torvalds Subject: Re: [PATCH 0/3] bootmem2 III References: <20080509151713.939253437@saeurebad.de> <20080509184044.GA19109@one.firstfloor.org> <87lk2gtzta.fsf@saeurebad.de> <48275493.40601@firstfloor.org> <874p92qsvn.fsf@saeurebad.de> In-Reply-To: <874p92qsvn.fsf@saeurebad.de> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > I was wondering yesterday if it would be feasible to enforce > contiguousness for nodes. And lose the memory? That would make people not happy. So that arch-code does not create one pgdat > for each node but one for each contiguous block. I have not yet looked > deeper into it, but I suspect that other mm code has similar problems > with nodes spanning other nodes. I wouldn't think so. At least sparse memory with large holes is not that uncommon in the non x86 world. -Andi