From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757970AbYBYS1c (ORCPT ); Mon, 25 Feb 2008 13:27:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755249AbYBYS1M (ORCPT ); Mon, 25 Feb 2008 13:27:12 -0500 Received: from terminus.zytor.com ([198.137.202.10]:48899 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754843AbYBYS1K (ORCPT ); Mon, 25 Feb 2008 13:27:10 -0500 Message-ID: <47C306A1.2040909@zytor.com> Date: Mon, 25 Feb 2008 10:19:13 -0800 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Ingo Molnar CC: "Huang, Ying" , Ingo Molnar , Thomas Gleixner , Andi Kleen , linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86: EFI_PAGE_SHIFT fix References: <1203923917.4707.58.camel@caritas-dev.intel.com> <20080225074059.GI11327@elte.hu> In-Reply-To: <20080225074059.GI11327@elte.hu> 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 Ingo Molnar wrote: > * Huang, Ying wrote: > >> Make x86 EFI code works when EFI_PAGE_SHIFT != PAGE_SHIFT. The >> memrage_efi_to_native() provided in this patch can be used on other >> EFI platform such as IA64 too. >> >> This patch has been tested on Intel x86_64 platform with EFI 64/32 >> firmware. > > this is mostly cosmetic, isnt it - because currently nobody expects > EFI_PAGE_SHIFT and PAGE_SHIFT to ever change on x86, right? I've queued > up your patch for 2.6.26, ok? > There keeps being a lot of talk about a larger x86 pagesize, either involving future hardware support or via page clustering in the kernel. Going beyond a 48-bit address space (in long mode) may mean increasing the page size. -hpa