From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030784AbXCHWOx (ORCPT ); Thu, 8 Mar 2007 17:14:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030790AbXCHWOx (ORCPT ); Thu, 8 Mar 2007 17:14:53 -0500 Received: from terminus.zytor.com ([192.83.249.54]:41683 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030784AbXCHWOv (ORCPT ); Thu, 8 Mar 2007 17:14:51 -0500 Message-ID: <45F08C60.6010404@zytor.com> Date: Thu, 08 Mar 2007 14:21:20 -0800 From: "H. Peter Anvin" User-Agent: Thunderbird 1.5.0.9 (X11/20070102) MIME-Version: 1.0 To: Avi Kivity CC: David Miller , dmlb2000@gmail.com, linux-kernel@vger.kernel.org Subject: Re: PAGE_SIZE Availability Inconsistency References: <9c21eeae0703051555x1884fd7cse7968a71ec04eb27@mail.gmail.com> <20070305.160303.59493440.davem@davemloft.net> <9c21eeae0703051604l20a029c3r8cf09d792ba523be@mail.gmail.com> <20070305.162620.04006691.davem@davemloft.net> <45ECD03F.2040008@zytor.com> <45F07B63.1000105@argo.co.il> In-Reply-To: <45F07B63.1000105@argo.co.il> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Avi Kivity wrote: >> >> It definitely should, especially on x86-64, where the page size isn't >> guaranteed by the ABI (on i386, the ABI guarantees a 4K page size; on >> x86-64 it can be up to 64K.) > > Wouldn't that be ia64? No, the x86-64 EFI ABI permits page sizes up to 64K. Currently, of course, the only page size in use is 4K, but unlike i386 that's not guaranteed by the ABI. At least AMD has indicated that they are considering introducing larger page size support in future hardware. -hpa