Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752635AbZKIAUx (ORCPT ); Sun, 8 Nov 2009 19:20:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751459AbZKIAUw (ORCPT ); Sun, 8 Nov 2009 19:20:52 -0500 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:38225 "EHLO www.etchedpixels.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750851AbZKIAUw (ORCPT ); Sun, 8 Nov 2009 19:20:52 -0500 Date: Mon, 9 Nov 2009 00:22:32 +0000 From: Alan Cox To: "H. Peter Anvin" Cc: Pavel Machek , Matteo Croce , Sven-Haegar Koch , Ingo Molnar , linux-kernel@vger.kernel.org Subject: Re: i686 quirk for AMD Geode Message-ID: <20091109002232.587c569a@lxorguk.ukuu.org.uk> In-Reply-To: References: X-Mailer: Claws Mail 3.7.2 (GTK+ 2.14.7; x86_64-redhat-linux-gnu) 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 Content-Length: 631 Lines: 13 On Sun, 08 Nov 2009 14:10:24 -0800 "H. Peter Anvin" wrote: > Keep in mind that if we end up running that on code with any kind of significant fraction of CMOV it will utterly suck. cmov is pretty useless anyway and not a good scheduling choice generally speaking on a real CPU - so in fact gcc generates very few of them, but a few is enough to make 686 break on C3 -- 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/