From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <455B8F3A.6030503@mbligh.org> Date: Wed, 15 Nov 2006 14:05:46 -0800 From: Martin Bligh MIME-Version: 1.0 Subject: Re: [patch 2/2] enables booting a NUMA system where some nodes have no memory References: <20061115193049.3457b44c@localhost> <20061115193437.25cdc371@localhost> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Christian Krafft , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: Christoph Lameter wrote: > On Wed, 15 Nov 2006, Christian Krafft wrote: > >> When booting a NUMA system with nodes that have no memory (eg by limiting memory), >> bootmem_alloc_core tried to find pages in an uninitialized bootmem_map. > > Why should we support nodes with no memory? If a node has no memory then > its processors and other resources need to be attached to the nearest node > with memory. > > AFAICT The primary role of a node is to manage memory. A node is an arbitrary container object containing one or more of: CPUs Memory IO bus It does not have to contain memory. M. -- 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