Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760646AbZFLDzk (ORCPT ); Thu, 11 Jun 2009 23:55:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754893AbZFLDzd (ORCPT ); Thu, 11 Jun 2009 23:55:33 -0400 Received: from terminus.zytor.com ([198.137.202.10]:33286 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753164AbZFLDzc (ORCPT ); Thu, 11 Jun 2009 23:55:32 -0400 Message-ID: <4A31CF8C.6060609@zytor.com> Date: Thu, 11 Jun 2009 20:46:20 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Huang Ying CC: Mathieu Desnoyers , Steven Rostedt , "linux-kernel@vger.kernel.org" , Ingo Molnar , Andrew Morton , Thomas Gleixner , Peter Zijlstra , Frederic Weisbecker , Theodore Tso , Arnaldo Carvalho de Melo , Lai Jiangshan , "Martin J. Bligh" , Christoph Hellwig , Li Zefan , Hidetoshi Seto , Masami Hiramatsu Subject: Re: [PATCH 3/3] ring-buffer: add design document References: <20090610195311.767699959@goodmis.org> <20090610195525.429316815@goodmis.org> <1244681467.8361.654.camel@yhuang-dev.sh.intel.com> <1244687581.8361.703.camel@yhuang-dev.sh.intel.com> <20090611023807.GA12407@Krystal> <1244776417.5320.160.camel@yhuang-dev.sh.intel.com> In-Reply-To: <1244776417.5320.160.camel@yhuang-dev.sh.intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 675 Lines: 21 Huang Ying wrote: > > Yes. It seems that ARM is OK after FIQ save/restore issue is fixed. > Another machine with NMI but no NMI-safe cmpxchg is "real" 386. That is > very old machine, does that matter? > Well, we still support it (UP only, though.) It all depends on if there is a fallback that is good enough. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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/