From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261640AbTJ0L70 (ORCPT ); Mon, 27 Oct 2003 06:59:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261615AbTJ0L7Z (ORCPT ); Mon, 27 Oct 2003 06:59:25 -0500 Received: from mx1.redhat.com ([66.187.233.31]:5392 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S261601AbTJ0L7X (ORCPT ); Mon, 27 Oct 2003 06:59:23 -0500 Date: Mon, 27 Oct 2003 11:58:47 +0000 From: Dave Jones To: Pavel Machek Cc: "Luck, Tony" , Bjorn Helgaas , linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, marcelo@conectiva.com.br Subject: Re: [PATCH 2.4.23-pre8] Remove broken prefetching in free_one_pgd() Message-ID: <20031027115847.GA27230@redhat.com> Mail-Followup-To: Dave Jones , Pavel Machek , "Luck, Tony" , Bjorn Helgaas , linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, marcelo@conectiva.com.br References: <20031025201010.GC505@elf.ucw.cz> <20031026145156.GB28572@redhat.com> <20031027095259.GA312@elf.ucw.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031027095259.GA312@elf.ucw.cz> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 27, 2003 at 10:52:59AM +0100, Pavel Machek wrote: > > It isn't on some CPUs. Early athlons go bang when you prefetch > > past the end of RAM into unmapped memory for eg. > > Well, broken HW :-( There's a lot of it out there. If we didn't try to work around some of it, we'd end up running on less < 10% of machines out there 8-) > but andi's patch should fix up for that. Different bug. Dave -- Dave Jones http://www.codemonkey.org.uk