From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761196AbYFPJJT (ORCPT ); Mon, 16 Jun 2008 05:09:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757066AbYFPJJI (ORCPT ); Mon, 16 Jun 2008 05:09:08 -0400 Received: from relay2.sgi.com ([192.48.171.30]:59533 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756973AbYFPJJH (ORCPT ); Mon, 16 Jun 2008 05:09:07 -0400 Date: Mon, 16 Jun 2008 04:09:04 -0500 From: Paul Jackson To: "Huang, Ying" Cc: mingo@elte.hu, tglx@linutronix.de, yhlu.kernel@gmail.com, steiner@sgi.com, travis@sgi.com, hpa@zytor.com, linux-kernel@vger.kernel.org, andi@firstfloor.org, akpm@linux-foundation.org Subject: Re: [PATCH 4/8] x86 boot: allow overlapping ebda and efi memmap memory ranges Message-Id: <20080616040904.6f684c76.pj@sgi.com> In-Reply-To: <1213606435.12968.14.camel@caritas-dev.intel.com> References: <20080616062945.14597.78009.sendpatchset@polaris-admin.engr.sgi.com> <20080616063001.14597.96170.sendpatchset@polaris-admin.engr.sgi.com> <1213600062.11185.13.camel@caritas-dev.intel.com> <20080616032457.718f4d87.pj@sgi.com> <1213606435.12968.14.camel@caritas-dev.intel.com> Organization: SGI X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.12.0; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Huang wrote: > I think it is sufficient for boot loader to avoid memory area from > 0x9f000 to 0x100000. This can be seen as compatible code for legacy > BIOS. That might work -- I'll give it a try. > I think if EBDA area is used in EFI system, it should be reserved in EFI > memory map. Would you recommend doing this with code in arch/x86/kernel/head.c, that did not invoke reserve_ebda_region() if efi_enabled was set? -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson 1.940.382.4214