From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261881AbTJADN0 (ORCPT ); Tue, 30 Sep 2003 23:13:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261882AbTJADN0 (ORCPT ); Tue, 30 Sep 2003 23:13:26 -0400 Received: from fw.osdl.org ([65.172.181.6]:7832 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S261881AbTJADNZ (ORCPT ); Tue, 30 Sep 2003 23:13:25 -0400 Date: Tue, 30 Sep 2003 20:14:18 -0700 From: Andrew Morton To: Jamie Lokier Cc: jun.nakajima@intel.com, davej@redhat.com, torvalds@osdl.org, linux-kernel@vger.kernel.org, richard.brunner@amd.com Subject: Re: [PATCH] Mutilated form of Andi Kleen's AMD prefetch errata patch Message-Id: <20030930201418.2a1cdeb4.akpm@osdl.org> In-Reply-To: <20031001025128.GD32209@mail.shareable.org> References: <7F740D512C7C1046AB53446D3720017304AFCE@scsmsx402.sc.intel.com> <20031001025128.GD32209@mail.shareable.org> X-Mailer: Sylpheed version 0.9.4 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jamie Lokier wrote: > > Nakajima, Jun wrote: > > Oh, I thought you already closed this issue and you were discussing a > > different thing. > > > > I agree. They kernel should fix up userspace for this CPU errata. > > Our question is whether kernels configured specifically for non-AMD > (e.g. Winchip or Elan kernels) must have the AMD fixup code (it is a > few hundred bytes), refuse to boot on AMD, ignore the problem, or work > but not fix up userspace. Refusing to boot would be best I think. Fixing it up anyway would be OK too. Ignoring the problem in kernel and/or userspace could be viewed as a response to pilot error but as always it would be nice if, given a choice, we can help the pilot.