From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 14 May 2002 17:18:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 14 May 2002 17:18:52 -0400 Received: from [195.39.17.254] ([195.39.17.254]:6039 "EHLO Elf.ucw.cz") by vger.kernel.org with ESMTP id ; Tue, 14 May 2002 17:18:51 -0400 Date: Mon, 13 May 2002 17:51:00 +0000 From: Pavel Machek To: Andi Kleen Cc: Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [PATCH] 2.5.14 IDE 56 Message-ID: <20020513175059.B37@toy.ucw.cz> In-Reply-To: <3CD9E8A7.D524671D@zip.com.au> <5.1.0.14.2.20020509193347.02ff6dc8@mira-sjcm-3.cisco.com> <3CDAC4EB.FC4FE5CF@zip.com.au> <3CDB18CF.82DD6D6B@zip.com.au> <20020510030645.A2922@averell> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! > The tricky bit is to avoid prefetches over the boundary of your copy. > Prefetching from an uncached area or write combined area (like the > AGP gart which could start in next page) triggers hardware bugs in > various boxes. This unfortunately complicates the prefetching loops > a bit. CONFIG_MY_MACHINE_AINT_BORKEN? We definitely could assume that on x86-64. Pavel -- Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt, details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.