Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757180Ab1CaIHN (ORCPT ); Thu, 31 Mar 2011 04:07:13 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:48990 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757146Ab1CaIHG (ORCPT ); Thu, 31 Mar 2011 04:07:06 -0400 Date: Thu, 31 Mar 2011 10:06:34 +0200 From: Ingo Molnar To: Nicolas Pitre Cc: david@lang.hm, Linus Torvalds , Arnd Bergmann , Russell King - ARM Linux , Tony Lindgren , David Brown , lkml , linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, Catalin Marinas , "H. Peter Anvin" , Thomas Gleixner Subject: Re: [GIT PULL] omap changes for v2.6.39 merge window Message-ID: <20110331080634.GA18022@elte.hu> References: <20110318101512.GA15375@n2100.arm.linux.org.uk> <201103301906.42429.arnd@arndb.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.3.1 -2.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1317 Lines: 33 * Nicolas Pitre wrote: > On Wed, 30 Mar 2011, david@lang.hm wrote: > > > back in the early days of the PCs, different systems from different vendors > > had different bus types, peripherals at different addresses, etc. that didn't > > make all of those vendors systems different architectures, instead those > > things were varients of the x86 architecture. > > Most of them didn't survive. That really helps. That's not the point, 99% of the current ARM boards will not 'survive' either, 10-20 years down the road. I think you missed David's main point: life inevitably went on and few of the old x86 hardware 'survived' physically, but past hardware versions have not littered the kernel source with half a million lines of source code in the process ... Having strong, effective platform abstractions inside the kernel really helps even if the hardware space itself is inevitably fragmented: both powerpc and x86 has shown that. Until you realize and appreciate that you really have not understood the problem i think. Thanks, Ingo -- 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/