Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757840AbYFFNvg (ORCPT ); Fri, 6 Jun 2008 09:51:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754932AbYFFNv1 (ORCPT ); Fri, 6 Jun 2008 09:51:27 -0400 Received: from gw.goop.org ([64.81.55.164]:59725 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754822AbYFFNv1 (ORCPT ); Fri, 6 Jun 2008 09:51:27 -0400 Message-ID: <484940B5.6030307@goop.org> Date: Fri, 06 Jun 2008 14:50:45 +0100 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Andi Kleen CC: Jan Beulich , Stable Kernel , Linux Kernel Mailing List Subject: Re: [PATCH UPDATED] x86: set PAE PHYSICAL_MASK_SHIFT to 44 bits. References: <4848046A.5060006@goop.org> <484823BD.76E4.0078.0@novell.com> <484901A3.3040401@goop.org> <87lk1iu2km.fsf@basil.nowhere.org> In-Reply-To: <87lk1iu2km.fsf@basil.nowhere.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: 532 Lines: 15 Andi Kleen wrote: > 43bits might be actally safer because of potential sign bugs. > > But of course it won't work anyways likely. > I thought about it, but I think we're pretty consistent about putting pfns into unsigned types. But, yes, you're very marginal at that point. 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/