From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 3 Mar 2003 18:10:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 3 Mar 2003 18:10:43 -0500 Received: from mail.gemsoft.net ([195.10.254.5]:9740 "EHLO mail.gemsoft.net") by vger.kernel.org with ESMTP id ; Mon, 3 Mar 2003 18:10:42 -0500 Message-ID: <3E63E348.10604@walrond.org> Date: Mon, 03 Mar 2003 23:20:40 +0000 From: Andrew Walrond User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20021020 X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: CONFIG_NR_CPUS (or something related) broken in 2.5 ? Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Setting the number of cpus to 4 causes only 2 to be displayed in /proc/cpuinfo (On a dual P4 Xeon (Hyperthreaded) machine which normally shows 4 CPUs) I'm using... * * ACPI Support * ACPI Support (ACPI) [Y/n/?] y CPU Enumeration Only (ACPI_HT_ONLY) [Y/n/?] y ...to detect the HT Xeons. Trying with CONFIG_NR_CPUS=5........Same Trying with CONFIG_NR_CPUS=6........Same Trying with CONFIG_NR_CPUS=7........3 Processors - Weird! Trying with CONFIG_NR_CPUS=8........4 Processors - Hoorah! Strange, or am I missing something? Andrew Walrond [Me: Off to try CONFIG_NR_CPUS=32 :)]