From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from penguin.netx4.com (embeddededge.com [209.113.146.155]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id ABD75679F9 for ; Tue, 17 May 2005 01:52:33 +1000 (EST) In-Reply-To: <1116255938.5095.133.camel@gaston> References: <1116222720.5095.86.camel@gaston> <7d5cfed0ee1edade8050d2c4da94b3f1@freescale.com> <1116255938.5095.133.camel@gaston> Mime-Version: 1.0 (Apple Message framework v622) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: From: Dan Malek Date: Mon, 16 May 2005 11:52:38 -0400 To: Benjamin Herrenschmidt Cc: linuxppc-dev@ozlabs.org, John Reiser Subject: Re: 2GB address space limit on 32-bit PowerPC Macintosh List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On May 16, 2005, at 11:05 AM, Benjamin Herrenschmidt wrote: > I suppose it would add about ... 1 instruction :) It's a little more than that :-) > But I agree that we don't abolutely _need_ to break everybody. Maybe a > better compromise would be to have the default beeing per CPU family ? > 6xx/7xx/7xxx could default to 3G and 8xx stay at 2G... That's still going to break nearly every embedded board. My point is that is all configurable for each individual board, so if you want that to be the default for a board, then just update the defconfig for that board. The PMac is only one "board" out of many we support, and I don't think it should be considered the default or generic configuration any more than any other board. The PMac is the easiest to update because it's a single configuration file. If you want that to have a 3G default task space, then update that one configuration file. As we have time we will update all of the others, and when we get to the point where most boards are of that configuration, we'll make it the default and the minority of boards become the special cases. Thanks. -- Dan