From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751049AbVK0NoL (ORCPT ); Sun, 27 Nov 2005 08:44:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751050AbVK0NoL (ORCPT ); Sun, 27 Nov 2005 08:44:11 -0500 Received: from hellhawk.shadowen.org ([80.68.90.175]:49422 "EHLO hellhawk.shadowen.org") by vger.kernel.org with ESMTP id S1751047AbVK0NoK (ORCPT ); Sun, 27 Nov 2005 08:44:10 -0500 Message-ID: <4389B80C.8040405@shadowen.org> Date: Sun, 27 Nov 2005 13:43:40 +0000 From: Andy Whitcroft User-Agent: Debian Thunderbird 1.0.7 (X11/20051017) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Kyle Moffett CC: LKML Kernel , Andrew Morton , Benjamin Herrenschmidt , Anton Blanchard Subject: Re: [2.6.15-rc2-mm1] Disabled flatmem on ppc32? (ARCH=powerpc) References: <44E57FC6-A500-42B7-86F9-F1F4E72734EC@mac.com> In-Reply-To: <44E57FC6-A500-42B7-86F9-F1F4E72734EC@mac.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Kyle Moffett wrote: > There is a Kconfig problem for ppc32 in the latest -mm kernel. It > seems that somehow the Kconfig logic for selecting memory models under > ARCH=powerpc doesn't quite get it right for standard flatmem ppc32 > systems. When I look at the memory model selection, I only see > sparsemem, whereas on a normal -rc2 kernel, I can see both flatmem and > sparsemem. This somehow triggers a #error where the number of reserved > bits is less than the number necessary for the sparsemem layout > (because we're on a 32-bit arch without the address space for sparsemem?). I suspect we have neglected to add back the default for FLATMEM on 32 bit when we allowed FLATMEM to be disabled for 64 bit. Will go and look at it. Thanks for the report. -apw