From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754154AbZKHSDs (ORCPT ); Sun, 8 Nov 2009 13:03:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753914AbZKHSDr (ORCPT ); Sun, 8 Nov 2009 13:03:47 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:49954 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752601AbZKHSDq (ORCPT ); Sun, 8 Nov 2009 13:03:46 -0500 Date: Sun, 8 Nov 2009 19:03:35 +0100 From: Ingo Molnar To: Cyrill Gorcunov Cc: "Maciej W. Rozycki" , Yinghai Lu , x86team , LKML Subject: Re: [PATCH -tip] x86,apic: Use PAGE_SIZE instead of numbers Message-ID: <20091108180335.GA17985@elte.hu> References: <20091108155356.GB25940@lenovo> <20091108173650.GF25940@lenovo> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20091108173650.GF25940@lenovo> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Cyrill Gorcunov wrote: > [Maciej W. Rozycki - Sun, Nov 08, 2009 at 05:28:05PM +0000] > | On Sun, 8 Nov 2009, Cyrill Gorcunov wrote: > | > | > The whole page is reserved for IO-APIC fixmap > | > due to non-cacheable requirement. So lets note > | > this explicitly instead of playing with numbers. > | > > | > CC: Yinghai Lu > | > CC: "Maciej W. Rozycki" > | > Signed-off-by: Cyrill Gorcunov > | > --- > | > | Acked-by: Maciej W. Rozycki > | > | Is PAGE_SIZE still always 4kB for the x86 these days? If so, then your > | change makes sense to me. > > Yeah, as far as I know. I didn't find any sign if we going to change > PAGE_SHIFT. Not in the next 10-20 years or so. (and any prediction beyond that is pointless i suspect) Ingo