From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262060AbTJAItk (ORCPT ); Wed, 1 Oct 2003 04:49:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262055AbTJAItk (ORCPT ); Wed, 1 Oct 2003 04:49:40 -0400 Received: from ns.suse.de ([195.135.220.2]:3730 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id S262060AbTJAIt2 (ORCPT ); Wed, 1 Oct 2003 04:49:28 -0400 Date: Wed, 1 Oct 2003 10:49:26 +0200 From: Andi Kleen To: Hugh Dickins Cc: Jamie Lokier , Andi Kleen , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [PATCH] Mutilated form of Andi Kleen's AMD prefetch errata patch Message-ID: <20031001084926.GB22333@wotan.suse.de> References: <20031001073132.GK1131@mail.shareable.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 01, 2003 at 09:02:11AM +0100, Hugh Dickins wrote: > On Wed, 1 Oct 2003, Jamie Lokier wrote: > > > > See recent message from me. All you need is a check "address >= > > TASK_SIZE", which is thread already at the start of do_page_fault. > > What about the 4G+4G split? Whoever runs 4G+4G split surely doesn't care about fast paths because of the large overhead it adds everywhere ;-) They can check it always. -Andi