From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161143AbXDVXvH (ORCPT ); Sun, 22 Apr 2007 19:51:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161148AbXDVXvH (ORCPT ); Sun, 22 Apr 2007 19:51:07 -0400 Received: from shawidc-mo1.cg.shawcable.net ([24.71.223.10]:54998 "EHLO pd2mo3so.prod.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161143AbXDVXvG (ORCPT ); Sun, 22 Apr 2007 19:51:06 -0400 Date: Sun, 22 Apr 2007 17:50:55 -0600 From: Robert Hancock Subject: Re: [BUG? -rc7] SMP: Just one CPU activated: P4 3GHz HT In-reply-to: To: Miguel Ojeda Cc: linux-kernel@vger.kernel.org Message-id: <462BF4DF.7080401@shaw.ca> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit References: User-Agent: Thunderbird 2.0.0.0 (Windows/20070326) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Miguel Ojeda wrote: > Hi all, > > I have a ASUS P4P800 Deluxe, P4 3GHz HT, 1GB RAM and testing -rc7 I > noticed I just got 1 CPU. > > I checked my .config but I do not see anything bad. Also I read > Documentation/smp.txt. Just for being sure this is not a bug, I'm > posting it. > > Here you have .config and dmesg. You didn't enable ACPI, it's needed for almost all systems to detect HT and also for many systems to detect multi-cores as well. Aside from that, in general I would say that on any modern x86 system ACPI should always be enabled. In many cases it seems the BIOS code is not tested much without ACPI anymore, so going without ACPI can be problematic. -- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/