Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265436AbTFMQWx (ORCPT ); Fri, 13 Jun 2003 12:22:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265433AbTFMQWx (ORCPT ); Fri, 13 Jun 2003 12:22:53 -0400 Received: from nat-pool-bos.redhat.com ([66.187.230.200]:24727 "EHLO chimarrao.boston.redhat.com") by vger.kernel.org with ESMTP id S265436AbTFMQW1 (ORCPT ); Fri, 13 Jun 2003 12:22:27 -0400 Date: Fri, 13 Jun 2003 12:35:47 -0400 (EDT) From: Rik van Riel X-X-Sender: riel@chimarrao.boston.redhat.com To: Mark Watts cc: linux-kernel@vger.kernel.org Subject: Re: HyperThreading not working in 2.4.21-rc6-ac2 In-Reply-To: <200306130949.24402.m.watts@eris.qinetiq.com> Message-ID: 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 Content-Length: 938 Lines: 23 On Fri, 13 Jun 2003, Mark Watts wrote: > The following is a dmesg from a Dell PowerEdge 2650 server with 2 2.4Ghx > HT capable processors. To the best of my knowledge, I have HT enabled in > the bios but I still only see the physical processors (no siblings) even > though the cpus are numbered as if I have siblings. > > Any suggestions? > Kernel command line: auto BOOT_IMAGE=2421rc6ac2 ro root=801 devfs=mount > hda=ide-scsi acpi=off ^^^^^^^^ The -ac kernel drops acpitable.c, which used to detect things like irq routing and HT "evil twin" CPUs and instead upgrades the ACPI subsystem. I suspect you need a different ACPI setting, though I'm not sure what it would be. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/