From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933741AbXDBROY (ORCPT ); Mon, 2 Apr 2007 13:14:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933686AbXDBROY (ORCPT ); Mon, 2 Apr 2007 13:14:24 -0400 Received: from cantor2.suse.de ([195.135.220.15]:52024 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933674AbXDBROX (ORCPT ); Mon, 2 Apr 2007 13:14:23 -0400 From: Andi Kleen Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg) To: Christoph Lameter Subject: Re: [PATCH 1/4] x86_64: Switch to SPARSE_VIRTUAL Date: Mon, 2 Apr 2007 19:14:07 +0200 User-Agent: KMail/1.9.5 Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Martin Bligh , linux-mm@kvack.org, KAMEZAWA Hiroyuki References: <20070401071024.23757.4113.sendpatchset@schroedinger.engr.sgi.com> <200704021744.39880.ak@suse.de> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200704021914.07541.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > No no no. For the gazillions time: All of 1-1 mapped kernel memory on > x86_64 needs a 2 MB page table entry. The virtual memmap uses the same. > There are *no* additional TLBs used. But why do you reserve an own virtual area then if you claim to not use any additional mappings? -Andi