Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757443AbYKEAmm (ORCPT ); Tue, 4 Nov 2008 19:42:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754740AbYKEAmd (ORCPT ); Tue, 4 Nov 2008 19:42:33 -0500 Received: from gw.goop.org ([64.81.55.164]:37350 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754083AbYKEAmd (ORCPT ); Tue, 4 Nov 2008 19:42:33 -0500 Message-ID: <4910EBF5.7070506@goop.org> Date: Tue, 04 Nov 2008 16:42:29 -0800 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.17 (X11/20081009) MIME-Version: 1.0 To: Andi Kleen CC: Ingo Molnar , Alexander van Heukelum , Cyrill Gorcunov , Alexander van Heukelum , LKML , Thomas Gleixner , "H. Peter Anvin" , 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> In-Reply-To: <20081104210643.GH29626@one.firstfloor.org> X-Enigmail-Version: 0.95.6 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: 556 Lines: 14 Andi Kleen wrote: > ??? LOCK slowness is not because of the bus. And I know you know > that Ingo, so I don't know why you wrote that bogosity above. > Why are the accesses locked? Is it because it does an update of the accessed bit in the descriptor? (We should be pre-setting them all anyway.) J -- 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/