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, 25 Mar 2003 11:32:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 25 Mar 2003 11:32:33 -0500 Received: from deviant.impure.org.uk ([195.82.120.238]:55489 "EHLO deviant.impure.org.uk") by vger.kernel.org with ESMTP id ; Tue, 25 Mar 2003 11:32:32 -0500 Date: Tue, 25 Mar 2003 16:43:25 +0000 From: Dave Jones To: Ivan Kokshaysky Cc: Andi Kleen , linux-kernel@vger.kernel.org Subject: Re: cacheline size detection code in 2.5.66 Message-ID: <20030325164317.GA4019@suse.de> Mail-Followup-To: Dave Jones , Ivan Kokshaysky , Andi Kleen , linux-kernel@vger.kernel.org References: <20030325071532.GA19217@averell> <20030325143310.A3487@jurassic.park.msu.ru> <20030325121527.GA29965@averell> <20030325124333.GB28451@suse.de> <20030325133525.GA30321@averell> <20030325173937.A21821@jurassic.park.msu.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030325173937.A21821@jurassic.park.msu.ru> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 25, 2003 at 05:39:37PM +0300, Ivan Kokshaysky wrote: > On Tue, Mar 25, 2003 at 02:35:25PM +0100, Andi Kleen wrote: > > Ivan confused me. Either he read the application note wrong or it is wrong. > > Ok, it's available at > http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/20734.pdf For info, that is a reliable[*] way to detect XP/MP Athlons. It's used in the kernel for SMP tainting, and x86info has also been using it for some time. Dave [*] AMD screwed up one stepping of XPs and enabled the MP bit even though they weren't actually MPs.