From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756208AbYC1G2a (ORCPT ); Fri, 28 Mar 2008 02:28:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753428AbYC1G2U (ORCPT ); Fri, 28 Mar 2008 02:28:20 -0400 Received: from one.firstfloor.org ([213.235.205.2]:51709 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753413AbYC1G2T (ORCPT ); Fri, 28 Mar 2008 02:28:19 -0400 Date: Fri, 28 Mar 2008 07:31:42 +0100 From: Andi Kleen To: Yinghai Lu Cc: "Huang, Ying" , "H. Peter Anvin" , andi@firstfloor.org, mingo@redhat.com, tglx@linutronix.de, Paul Jackson , linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/4] x86_64 boot -v2: Add linked listof struct setup_data to boot protocol Message-ID: <20080328063142.GN29105@one.firstfloor.org> References: <1206672578.13404.21.camel@caritas-dev.intel.com> <86802c440803272233ved9c1d6w44f8722c85cf4c62@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <86802c440803272233ved9c1d6w44f8722c85cf4c62@mail.gmail.com> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Mar 27, 2008 at 10:33:27PM -0700, Yinghai Lu wrote: > On Thu, Mar 27, 2008 at 7:49 PM, Huang, Ying wrote: > > This patchset adds the linked list of struct setup_data to boot > > protocol. This is needed by EDD information and some SGI machine with > > E820 entry number > 128. > > interesting, that 512nodes/4096 box physics memory is not continuous? Likely not. That would require huge hardware overhead for all the comparators to handle variable ranges. Much easier to just use some higher bits in the address to index nodes. -Andi