From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261531AbUL0HDM (ORCPT ); Mon, 27 Dec 2004 02:03:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261756AbUL0HDM (ORCPT ); Mon, 27 Dec 2004 02:03:12 -0500 Received: from pirx.hexapodia.org ([199.199.212.25]:28197 "EHLO pirx.hexapodia.org") by vger.kernel.org with ESMTP id S261531AbUL0HDK (ORCPT ); Mon, 27 Dec 2004 02:03:10 -0500 Date: Sun, 26 Dec 2004 23:03:09 -0800 From: Andy Isaacson To: Andrea Arcangeli Cc: Linus Torvalds , "David S. Miller" , linux-kernel@vger.kernel.org, tglx@linutronix.de, akpm@osdl.org Subject: Re: VM fixes [->used_math to PF_USED_MATH] [6/4] Message-ID: <20041227070309.GA28907@hexapodia.org> References: <20041224174156.GE13747@dualathlon.random> <20041224100147.32ad4268.davem@davemloft.net> <20041224182219.GH13747@dualathlon.random> <20041225022721.GR13747@dualathlon.random> <20041225032430.GT13747@dualathlon.random> <20041225145321.GU13747@dualathlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20041225145321.GU13747@dualathlon.random> User-Agent: Mutt/1.4.1i X-PGP-Fingerprint: 48 01 21 E2 D4 E4 68 D1 B8 DF 39 B2 AF A3 16 B9 X-PGP-Key-URL: http://web.hexapodia.org/~adi/pgp.txt X-Domestic-Surveillance: money launder bomb tax evasion Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Dec 25, 2004 at 03:53:21PM +0100, Andrea Arcangeli wrote: > only to the future ones based on 2.6.10+, since the ev4 race on > SMP/PREEMPT is not relevant for the suse tree (those last two patches > are a bit too big to take any risk for a _purerly_theoretical_ race on > ev4 + SMP or ev4 + PREEMPT ;). The PF_MEMDIE was instead a more pratical > race (Wli said he triggered it in practice too) and it was triggering on > all archs, not just on ev4 + SMP or evr + PREEMPT, that's fixed with > [1-4]/4. FWIW, BWX showed up in ev56. So ev5 is also missing atomic byte instructions, and there definitely are (were?) SMP ev5 machines supported by Linux. I can't find any authoritative source for that assertion, but google supports it: http://sources.redhat.com/ml/libc-alpha/2002-09/msg00328.html -andy