From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 1 May 2002 19:24:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 1 May 2002 19:24:02 -0400 Received: from zok.SGI.COM ([204.94.215.101]:38292 "EHLO zok.sgi.com") by vger.kernel.org with ESMTP id ; Wed, 1 May 2002 19:24:01 -0400 Date: Wed, 1 May 2002 16:23:43 -0700 From: Jesse Barnes To: Andrea Arcangeli Cc: Daniel Phillips , Russell King , linux-kernel@vger.kernel.org Subject: Re: discontiguous memory platforms Message-ID: <20020501232343.GA1214171@sgi.com> Mail-Followup-To: Andrea Arcangeli , Daniel Phillips , Russell King , linux-kernel@vger.kernel.org In-Reply-To: <20020426192711.D18350@flint.arm.linux.org.uk> <20020429153500.B28887@dualathlon.random> <20020501042341.G11414@dualathlon.random> <20020501180547.GA1212440@sgi.com> <20020502011750.M11414@dualathlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.27i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 02, 2002 at 01:17:50AM +0200, Andrea Arcangeli wrote: > so ia64 is one of those archs with a ram layout with huge holes in the > middle of the ram of the nodes? I'd be curious to know what's the Well, our ia64 platform is at least, but I think there are others. > hardware advantage of designing the ram layout in such a way, compared > to all other numa archs that I deal with. Also if you know other archs > with huge holes in the middle of the ram of the nodes I'd be curious to > know about them too. thanks for the interesting info! AFAIK, some MIPS platforms (both NUMA and non-NUMA) have memory layouts like this too. I've never done hardware design before, so I'm not sure if there's a good reason for such layouts. Ralf or Daniel might be able to shed some more light on that... Jesse