From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751610AbWBWAl1 (ORCPT ); Wed, 22 Feb 2006 19:41:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751619AbWBWAl0 (ORCPT ); Wed, 22 Feb 2006 19:41:26 -0500 Received: from dsl027-180-168.sfo1.dsl.speakeasy.net ([216.27.180.168]:56214 "EHLO sunset.davemloft.net") by vger.kernel.org with ESMTP id S1751610AbWBWAl0 (ORCPT ); Wed, 22 Feb 2006 19:41:26 -0500 Date: Wed, 22 Feb 2006 16:41:27 -0800 (PST) Message-Id: <20060222.164127.35786912.davem@davemloft.net> To: hpa@zytor.com Cc: klibc@zytor.com, linux-kernel@vger.kernel.org Subject: Re: sys_mmap2 on different architectures From: "David S. Miller" In-Reply-To: <43FCFC53.20505@zytor.com> References: <43FCDB8A.5060100@zytor.com> <20060222.135430.44726149.davem@davemloft.net> <43FCFC53.20505@zytor.com> X-Mailer: Mew version 4.2.53 on Emacs 21.4 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: "H. Peter Anvin" Date: Wed, 22 Feb 2006 16:05:39 -0800 > Okay, what I'll do is that I'll hard-code 12 on i386, SPARC and ARM; on > other architectures I'll use getpagesize(). Of course, on 64-bit > architectures this is not an issue; there I just call sys_mmap. Oh and BTW if you use 12 it will break when executing on a 64-bit kernel, where PAGE_SHIFT is variable and starting at 13.