From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from westrelay02.boulder.ibm.com (westrelay02.boulder.ibm.com [9.17.195.11]) by e33.co.us.ibm.com (8.13.8/8.12.11) with ESMTP id k8DLx0vS029561 for ; Wed, 13 Sep 2006 17:59:00 -0400 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by westrelay02.boulder.ibm.com (8.13.6/8.13.6/NCO v8.1.1) with ESMTP id k8DLx02e294926 for ; Wed, 13 Sep 2006 15:59:00 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id k8DLx0b6031958 for ; Wed, 13 Sep 2006 15:59:00 -0600 Subject: Re: [PATCH] Get rid of zone_table From: Dave Hansen In-Reply-To: References: <1158180795.9141.158.camel@localhost.localdomain> <1158184047.9141.164.camel@localhost.localdomain> Content-Type: text/plain Date: Wed, 13 Sep 2006 14:58:55 -0700 Message-Id: <1158184735.9141.167.camel@localhost.localdomain> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Andy Whitcroft , linux-mm@kvack.org List-ID: On Wed, 2006-09-13 at 14:54 -0700, Christoph Lameter wrote: > On Wed, 13 Sep 2006, Dave Hansen wrote: > > Now that I think about it, we should have room to encode that thing > > inside of the section number on 32-bit platforms. > > We already have 1k nodes on IA64 and you can expect 16k in the > near future. I think you need at least 16 bit. > > Sorry I am a bit new to sparsemem but it seems that the mem sections are > arrays of pointers. You would like to store the node number in the lower > unused bits? I thought this patch was only for 32-bit NUMA platforms that have run out of bits in page->flags to encode the data. Does it apply to ia64 as well somehow? -- Dave -- 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