From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753261Ab0IHSrV (ORCPT ); Wed, 8 Sep 2010 14:47:21 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:32852 "EHLO www.etchedpixels.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752563Ab0IHSrR (ORCPT ); Wed, 8 Sep 2010 14:47:17 -0400 Date: Wed, 8 Sep 2010 20:07:15 +0100 From: Alan Cox To: Nick Lowe Cc: Hans-Peter Jansen , linux-kernel@vger.kernel.org Subject: Re: AMD Geode NOPL emulation for kernel 2.6.36-rc2 Message-ID: <20100908200715.2e56d0be@lxorguk.ukuu.org.uk> In-Reply-To: References: <55BC9463-95B9-4034-AA1E-55042D6E9354@gmail.com> <201009081115.15544.hpj@urpla.net> <20100908185605.55671889@lxorguk.ukuu.org.uk> X-Mailer: Claws Mail 3.7.6 (GTK+ 2.18.9; x86_64-redhat-linux-gnu) Face: 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 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > And nobody has answered what happens when NOPLs are used to > synchronise with something else? Surely that can lead to subtle, hard > to debug breakage? Isn't that plain worse than refusing to run or > breaking out of execution? NOPL for synchronisation - of user space. I'd say thats sufficiently unlikely not to care. It's still an improvement on crashing. The other point you make is a good one but it's not clear that all the proprietary apps for example will get recompiled, so to many users its not a solution. Similarly the long term stable distros aren't going to recompile everything and invalidate all their test data, so I doubt that things like Centos will. Alan