From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933644AbXDBGM0 (ORCPT ); Mon, 2 Apr 2007 02:12:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933740AbXDBGM0 (ORCPT ); Mon, 2 Apr 2007 02:12:26 -0400 Received: from cantor2.suse.de ([195.135.220.15]:43033 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933644AbXDBGMZ (ORCPT ); Mon, 2 Apr 2007 02:12:25 -0400 From: Andi Kleen Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg) To: Jeremy Fitzhardinge Subject: Re: [patch 04/17] Add pagetable accessors to pack and unpack pagetable entries Date: Mon, 2 Apr 2007 08:12:18 +0200 User-Agent: KMail/1.9.5 Cc: Andrew Morton , virtualization@lists.osdl.org, lkml , Ingo Molnar References: <20070402055652.610711908@goop.org> <20070402055704.278590661@goop.org> In-Reply-To: <20070402055704.278590661@goop.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200704020812.18320.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Monday 02 April 2007 07:56, Jeremy Fitzhardinge wrote: > Add a set of accessors to pack, unpack and modify page table entries > (at all levels). This allows a paravirt implementation to control the > contents of pgd/pmd/pte entries. For example, Xen uses this to > convert the (pseudo-)physical address into a machine address when > populating a pagetable entry, and converting back to pphys address > when an entry is read. What do the benchmarks say with CONFIG_PARAVIRT on native hardware compared to !CONFIG_PARAVIRT. e.g. does lmbench suffer? -Andi