From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756877AbYBIWpg (ORCPT ); Sat, 9 Feb 2008 17:45:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754949AbYBIWpV (ORCPT ); Sat, 9 Feb 2008 17:45:21 -0500 Received: from mtiwmhc11.worldnet.att.net ([204.127.131.115]:54928 "EHLO mtiwmhc11.worldnet.att.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754930AbYBIWpU (ORCPT ); Sat, 9 Feb 2008 17:45:20 -0500 X-Greylist: delayed 301 seconds by postgrey-1.27 at vger.kernel.org; Sat, 09 Feb 2008 17:45:19 EST Message-ID: <47AE2BCC.3040605@lwfinger.net> Date: Sat, 09 Feb 2008 15:40:12 -0700 From: Larry Finger User-Agent: Thunderbird 2.0.0.9 (X11/20071031) MIME-Version: 1.0 To: LKML Subject: Query about set_pages_* API 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 Is the set_pages_* API that replaces change_page_attr described somewhere? I have been unable to find it with Google. I'm trying to modify the VirtualBox kernel module to work with 2.6.24-git (and 2.6.25) on x86_64 architecture. The current code has a value of the third argument of the call (prot) with 3 variants. All variations have the following bits set: _PAGE_PRESENT, _PAGE_RW, _PAGE_DIRTY, and _PAGE_ACCESSED. Number 2 adds _PAGE_NX to the above, and number 3 adds _PAGE_GLOBAL to the bits in variation 1. From the code in arch/x86/mm/pageattr.c, I figured I need to call set_pages_wb() unconditionally, and set_pages_nx() if _PAGE_NX is set. Will these calls be sufficient? I thought about calling set_pages_rw(), but that entry is not exported. Thanks, Larry