Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755697Ab0FXWF2 (ORCPT ); Thu, 24 Jun 2010 18:05:28 -0400 Received: from sj-iport-4.cisco.com ([171.68.10.86]:44163 "EHLO sj-iport-4.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753542Ab0FXWF0 (ORCPT ); Thu, 24 Jun 2010 18:05:26 -0400 Authentication-Results: sj-iport-4.cisco.com; dkim=neutral (message not signed) header.i=none X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AvsEAONzI0yrR7H+/2dsb2JhbACfOnGoCJpFhSEEg14 X-IronPort-AV: E=Sophos;i="4.53,476,1272844800"; d="scan'208";a="149484083" From: Roland Dreier To: Kurt Newman Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.32.1 kernel unable to use more than 2 of 16 CPUs on Intel E5540 (i7) References: <4C23D1E9.9050007@globaldataguard.com> X-Message-Flag: Warning: May contain useful information Date: Thu, 24 Jun 2010 15:05:22 -0700 In-Reply-To: <4C23D1E9.9050007@globaldataguard.com> (Kurt Newman's message of "Thu, 24 Jun 2010 16:45:13 -0500") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 690 Lines: 14 Your config seems to have CONFIG_PM and therefore CONFIG_ACPI disabled. So the kernel is relying on mptable information. Unsurprisingly on a modern system, that info is probably broken -- since everything would have been tested with ACPI. Try turning on CONFIG_ACPI and see if that helps at all. -- Roland Dreier || For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/index.html -- 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/