Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754484AbYKFJaL (ORCPT ); Thu, 6 Nov 2008 04:30:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753304AbYKFJ36 (ORCPT ); Thu, 6 Nov 2008 04:29:58 -0500 Received: from terminus.zytor.com ([198.137.202.10]:34799 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753233AbYKFJ35 (ORCPT ); Thu, 6 Nov 2008 04:29:57 -0500 Message-ID: <4912B826.2090202@zytor.com> Date: Thu, 06 Nov 2008 01:25:58 -0800 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.16 (X11/20080723) MIME-Version: 1.0 To: Ingo Molnar CC: Jeremy Fitzhardinge , Andi Kleen , Alexander van Heukelum , Cyrill Gorcunov , Alexander van Heukelum , LKML , Thomas Gleixner , lguest@ozlabs.org, jeremy@xensource.com, Steven Rostedt , Mike Travis Subject: Re: [PATCH RFC/RFB] x86_64, i386: interrupt dispatch changes References: <20081104122839.GA22864@mailshack.com> <20081104150729.GC21470@localhost> <20081104170501.GE29626@one.firstfloor.org> <1225822006.21441.1282961299@webmail.messagingengine.com> <20081104204400.GC10825@elte.hu> <20081104210643.GH29626@one.firstfloor.org> <4910EBF5.7070506@goop.org> <20081106091548.GE4890@elte.hu> In-Reply-To: <20081106091548.GE4890@elte.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 523 Lines: 14 Ingo Molnar wrote: > > yes, the accessed bit in the segment descriptor has to be updated in > an atomic transaction: the CPU has to do a MESI coherent > read+compare+write transaction, without damaging other updates to the > 6 bytes segment descriptor. > 8 bytes, rather. -- 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/