From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757408AbYFLVxL (ORCPT ); Thu, 12 Jun 2008 17:53:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752623AbYFLVw5 (ORCPT ); Thu, 12 Jun 2008 17:52:57 -0400 Received: from relay2.sgi.com ([192.48.171.30]:40048 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752268AbYFLVw5 (ORCPT ); Thu, 12 Jun 2008 17:52:57 -0400 Date: Thu, 12 Jun 2008 16:52:52 -0500 From: Paul Jackson To: "H. Peter Anvin" Cc: yhlu.kernel@gmail.com, andi@firstfloor.org, mingo@elte.hu, bwalle@suse.de, hannes@saeurebad.de, ying.huang@intel.com, linux-kernel@vger.kernel.org, steiner@sgi.com Subject: Re: Confusions with reserve_early, reserve_bootmem, e820, efi, ... on x86_64 Message-Id: <20080612165252.b7ce6902.pj@sgi.com> In-Reply-To: <48519077.2050402@zytor.com> References: <20080612050609.88a8cf7f.pj@sgi.com> <86802c440806120525v2da860bfyf05eb8ec6b9943d0@mail.gmail.com> <20080612111943.c140c4cb.pj@sgi.com> <86802c440806121005g42f2e44cxbe5f7bdb06836a1e@mail.gmail.com> <20080612151032.5a59309b.pj@sgi.com> <86802c440806121329s54bb1e6dobaaa15c26e7dc81c@mail.gmail.com> <48519077.2050402@zytor.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 hpa writes: > It's probably safer to reserve the EBDA even with EFI; it's only a page > or so so it doesn't matter much. Reserving EBDA with EFI is fine by what little I know. But the current code doesn't like it -- if the EFI memmap range is inside the EBDA range, then the reserve_early() routine panics with: "Overlapping early reservations" Something needs tweaking here somehow ... and I'm not the one to know what. -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson 1.940.382.4214