From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263224AbVGOF2i (ORCPT ); Fri, 15 Jul 2005 01:28:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263219AbVGOF2Y (ORCPT ); Fri, 15 Jul 2005 01:28:24 -0400 Received: from zeus1.kernel.org ([204.152.191.4]:21129 "EHLO zeus1.kernel.org") by vger.kernel.org with ESMTP id S263216AbVGOF1j (ORCPT ); Fri, 15 Jul 2005 01:27:39 -0400 Date: Fri, 15 Jul 2005 14:21:46 +1000 From: David Gibson To: Christoph Lameter Cc: linux-kernel@vger.kernel.org, linuxppc64-dev@ozlabs.org Subject: Re: RFC: Hugepage COW Message-ID: <20050715042146.GE7750@localhost.localdomain> Mail-Followup-To: Christoph Lameter , linux-kernel@vger.kernel.org, linuxppc64-dev@ozlabs.org References: <20050707055554.GC11246@localhost.localdomain> <20050715011428.GC7750@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.6+20040907i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 14, 2005 at 07:00:11PM -0700, Christoph Lameter wrote: > On Fri, 15 Jul 2005, David Gibson wrote: > > > Well, the COW patch implements a fault handler, obviously. What > > specifically where you thinking about? > > About a fault handler of course and about surrounding scalability issues. > I worked on some hugepage related patches last fall. Have you had a look > at the work of Ken, Ray and me on the subject? I'm still not at all sure what you're getting at. Do you mean the demand-allocation patches which were floating around at some point - I gather they're important for doing sensible NUMA allocation of hugepages. They have a small overlap with the COW code, in the fault handler, but not much. -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/people/dgibson