Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755936AbYJFUsd (ORCPT ); Mon, 6 Oct 2008 16:48:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754324AbYJFUsZ (ORCPT ); Mon, 6 Oct 2008 16:48:25 -0400 Received: from e8.ny.us.ibm.com ([32.97.182.138]:56471 "EHLO e8.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754302AbYJFUsY (ORCPT ); Mon, 6 Oct 2008 16:48:24 -0400 Message-ID: <48EA79AC.8090705@linux.vnet.ibm.com> Date: Mon, 06 Oct 2008 15:48:44 -0500 From: Jon Tollefson Organization: IBM User-Agent: Thunderbird 2.0.0.17 (X11/20080925) MIME-Version: 1.0 To: Kumar Gala CC: Adam Litke , linuxppc-dev , Adam Litke , Linux Kernel Mailing List , Linux Memory Management List Subject: Re: [PATCH] properly reserve in bootmem the lmb reserved regions that cross numa nodes References: <48E23D6C.4030406@linux.vnet.ibm.com> <1222789675.13978.14.camel@localhost.localdomain> <7E5B6DFB-F9DE-4929-8A4F-8011BF817017@kernel.crashing.org> <48EA31D5.70609@linux.vnet.ibm.com> <1DA7FAFA-0708-4CFC-B721-B09A29F45B3F@kernel.crashing.org> In-Reply-To: <1DA7FAFA-0708-4CFC-B721-B09A29F45B3F@kernel.crashing.org> X-Enigmail-Version: 0.95.0 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 Content-Length: 1114 Lines: 33 Kumar Gala wrote: > > On Oct 6, 2008, at 10:42 AM, Jon Tollefson wrote: > >> Kumar Gala wrote: >>> Out of interest how to do you guys represent NUMA regions of memory in >>> the device tree? >>> >>> - k >> Looking at the source code in numa.c I see at the start of >> do_init_bootmem() that parse_numa_properties() is called. It appears to >> be looking at memory nodes and getting the node id from it. It gets an >> associativity property for the memory node and indexes that array with a >> 'min_common_depth' value to get the node id. >> >> This node id is then used to setup the active ranges in the >> early_node_map[]. >> >> Is this what you are asking about? There are others I am sure who know >> more about it then I though. > > I was wondering if this was documented anywhere (like in sPAPR)? > > - k I see some information on it in section "C.6.6". Jon -- 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/