From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755699Ab2LMWzL (ORCPT ); Thu, 13 Dec 2012 17:55:11 -0500 Received: from terminus.zytor.com ([198.137.202.10]:40374 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753415Ab2LMWzK (ORCPT ); Thu, 13 Dec 2012 17:55:10 -0500 Message-ID: <50CA5CAC.9050508@zytor.com> Date: Thu, 13 Dec 2012 14:54:36 -0800 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Yinghai Lu CC: Thomas Gleixner , Ingo Molnar , "Eric W. Biederman" , Andrew Morton , linux-kernel@vger.kernel.org, Rob Landley , Matt Fleming Subject: Re: [PATCH v6 18/27] x86, boot: add fields to support load bzImage and ramdisk above 4G References: <1355436141-8668-1-git-send-email-yinghai@kernel.org> <1355436141-8668-19-git-send-email-yinghai@kernel.org> In-Reply-To: <1355436141-8668-19-git-send-email-yinghai@kernel.org> X-Enigmail-Version: 1.4.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/13/2012 02:02 PM, Yinghai Lu wrote: > 1EA/001 ALL edd_mbr_sig_buf_entries Number of entries in edd_mbr_sig_buffer > (below) > +1F0/001 ALL sentinel 0: states _ext_* fields are vali 0x1f0 is unsuitable for use as sentinel -- or in fact for any purpose -- because it is quite plausible that someone may (fairly sanely) start the copy range at 0x1f0 instead of 0x1f1... we really should have documented it that way but it is too late now. However, we can use 0x1ef. -hpa