Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762352AbYHFFTY (ORCPT ); Wed, 6 Aug 2008 01:19:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751193AbYHFFTR (ORCPT ); Wed, 6 Aug 2008 01:19:17 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:59029 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750772AbYHFFTR (ORCPT ); Wed, 6 Aug 2008 01:19:17 -0400 Date: Tue, 05 Aug 2008 22:19:17 -0700 (PDT) Message-Id: <20080805.221917.42858161.davem@davemloft.net> To: jeff.chua.linux@gmail.com Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.27rc1 cannot boot more than 8CPUs From: David Miller In-Reply-To: References: X-Mailer: Mew version 5.2 on Emacs 22.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 636 Lines: 16 From: "Jeff Chua" Date: Wed, 6 Aug 2008 11:15:30 +0800 > I've a Dell R900 with 4 quad-core Xeon processors (total 16CPUs), but > can only managed to boot up with CONFIG_NR_CPUS=8. Setting > CONFIG_NR_CPUS=16 causes the kernel to hang while booting. > > > Here's the dmesg with CONFIG_NR_CPUS=8 ... Do you have lockdep enabled? If sure, try turning that off. -- 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/