From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753814AbWKMCNw (ORCPT ); Sun, 12 Nov 2006 21:13:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753818AbWKMCNw (ORCPT ); Sun, 12 Nov 2006 21:13:52 -0500 Received: from mga06.intel.com ([134.134.136.21]:38819 "EHLO orsmga101.jf.intel.com") by vger.kernel.org with ESMTP id S1753814AbWKMCNv (ORCPT ); Sun, 12 Nov 2006 21:13:51 -0500 X-ExtLoop1: 1 X-IronPort-AV: i="4.09,415,1157353200"; d="scan'208"; a="160351384:sNHT18901995" Date: Sun, 12 Nov 2006 17:50:51 -0800 From: "Siddha, Suresh B" To: Andi Kleen Cc: Ingo Molnar , Andrew Morton , linux-kernel@vger.kernel.org, ashok.raj@intel.com Subject: Re: [patch] genapic: optimize & fix APIC mode setup Message-ID: <20061112175050.A17720@unix-os.sc.intel.com> References: <20061111151414.GA32507@elte.hu> <200611111620.24551.ak@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <200611111620.24551.ak@suse.de>; from ak@suse.de on Sat, Nov 11, 2006 at 04:20:24PM +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Nov 11, 2006 at 04:20:24PM +0100, Andi Kleen wrote: > On Saturday 11 November 2006 16:14, Ingo Molnar wrote: > > > > - removed the CPU hotplug hacks, switching the default for small > > systems back from phys-flat to logical-flat. The switching to logical > > flat mode on small systems fixed sporadic ethernet driver timeouts i > > was getting on a dual-core Athlon64 system: > > That will break CPU hotplug on some Intel systems (Ashok can give details) There is an issue of using clustered mode along with cpu hotplug. More details are at the below link. http://marc.theaimsgroup.com/?l=linux-kernel&m=113261865814107&w=2 thanks, suresh