From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264258AbTLIQgT (ORCPT ); Tue, 9 Dec 2003 11:36:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265994AbTLIQgS (ORCPT ); Tue, 9 Dec 2003 11:36:18 -0500 Received: from cafe.hardrock.org ([142.179.182.80]:41633 "EHLO cafe.hardrock.org") by vger.kernel.org with ESMTP id S264258AbTLIQgR (ORCPT ); Tue, 9 Dec 2003 11:36:17 -0500 Date: Tue, 9 Dec 2003 09:36:02 -0700 (MST) From: James Bourne To: Yaroslav Klyukin cc: linux-kernel@vger.kernel.org Subject: Re: HyperThreading with 2.4.23 and Dual Intel Xenon In-Reply-To: <3FD5E636.3030509@mail.ru> Message-ID: References: <10wUb-1mR-37@gated-at.bofh.it> <10xGt-38t-29@gated-at.bofh.it> <3FD5E636.3030509@mail.ru> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 9 Dec 2003, Yaroslav Klyukin wrote: > Marcelo Tosatti wrote: > >>we compiled 2.4.23 for 2 cpus but we don't get Hyperthreading working. > >>with 2.4.20 and the machine, it work without probs. > >> > >>Any ideas? > > Maybe you need to enable ACPI. Hi, There has also been an issue identified where HT will not be detected correctly with 2.4.23 unless you apply a patch or set your number of CPUs to 8 instead of 2... Please try the patch at http://www.hardrock.org/kernel/current-updates/linux-2.4.23-updates.patch as it contains this as well as other fixes. Regards James -- James Bourne | Email: jbourne@hardrock.org Unix Systems Administrator | WWW: http://www.hardrock.org Custom Unix Programming | Linux: The choice of a GNU generation ---------------------------------------------------------------------- "All you need's an occasional kick in the philosophy." Frank Herbert