From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 12 Feb 2003 08:54:13 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 12 Feb 2003 08:54:13 -0500 Received: from main.gmane.org ([80.91.224.249]:56761 "EHLO main.gmane.org") by vger.kernel.org with ESMTP id ; Wed, 12 Feb 2003 08:54:11 -0500 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Lars Magne Ingebrigtsen Subject: Problems with hyper-threading on Asus P4T533 / Linux 2.4.20 Date: Wed, 12 Feb 2003 15:03:59 +0100 Organization: Programmerer Ingebrigtsen Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Complaints-To: usenet@main.gmane.org Mail-Copies-To: never X-Now-Playing: Blaine L. Reininger's _Night Air_: "Crash (Remix)" User-Agent: Gnus/5.090015 (Oort Gnus v0.15) Emacs/21.2.50 (i686-pc-linux-gnu) Cancel-Lock: sha1:AY8jAkm3ZOTVSmZnB5mqPkPo9Bo= Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org We've just gotten an Asus P4T533-based machine with a 3.06GHz P4 CPU, bios version 1005. (P4T533 is i850e-based.) The bios claims that the P4 has hyper-threading, and as you can see from the cpuinfo output below, "ht" is among the flags. (And the manual says that P4T533 is ht-enabled.) I've tried booting with acpismp=force and without, and it doesn't seem to make much difference: Linux still only sees a single CPU. I've also tried 2.4.21-pre4 and -ac4, which doesn't seem to make any difference, either. Anybody got any ideas why I can't get this to work? buto:~# uname -a Linux buto 2.4.20 #3 SMP Wed Feb 12 14:28:49 CET 2003 i686 unknown buto:~# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 3.06GHz stepping : 7 cpu MHz : 3073.691 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm bogomips : 6134.16 -- (domestic pets only, the antidote for overdose, milk.) larsi@gnus.org * Lars Magne Ingebrigtsen