Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755459AbZKDLSk (ORCPT ); Wed, 4 Nov 2009 06:18:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755167AbZKDLSk (ORCPT ); Wed, 4 Nov 2009 06:18:40 -0500 Received: from eddie.linux-mips.org ([78.24.191.182]:37684 "EHLO eddie.linux-mips.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755156AbZKDLSj (ORCPT ); Wed, 4 Nov 2009 06:18:39 -0500 Date: Wed, 4 Nov 2009 12:19:57 +0100 From: Ralf Baechle To: Wu Zhangjin Cc: Arnaud Patard , linux-mips@linux-mips.org, LKML , huhb@lemote.com, yanh@lemote.com, Zhang Le , Thomas Gleixner , Nicholas Mc Guire , zhangfx@lemote.com, liujl@lemote.com Subject: Re: [PATCH -queue v0 1/6] [loongson] add basic loongson-2f support Message-ID: <20091104111957.GA13549@linux-mips.org> References: <1257332652.8716.5.camel@falcon.domain.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1257332652.8716.5.camel@falcon.domain.org> User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1084 Lines: 24 On Wed, Nov 04, 2009 at 07:04:12PM +0800, Wu Zhangjin wrote: > > Small question : Why don't you restrict to 64bit kernels only ? From > > what I remember from some discussions with ST, trying to use a 32-bit > > kernel on 2f is a nice way to get troubles. It would be better imho to > > forbid such a configuration. As a side effect, this will remove all > > 'defined(CONFIG_64BIT)' parts of your #ifdef tests. > > > > It's hard to make such a decision ;) Perhaps some guys want to play with > the 32bit version. We have other systems where 32-bit kernel support is just remarkably ugly. We've dropped 32-bit support for the SGI IP32 aka O2 - nobody seems to even have really noticed that. The Sibyte systems would be good candidates to do the same as accesses to outside the 32-bit address space are needed very frequently. Ralf -- 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/