From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262579AbVFVXSe (ORCPT ); Wed, 22 Jun 2005 19:18:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262151AbVFVXRy (ORCPT ); Wed, 22 Jun 2005 19:17:54 -0400 Received: from cantor.suse.de ([195.135.220.2]:17832 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S262590AbVFVXKz (ORCPT ); Wed, 22 Jun 2005 19:10:55 -0400 Date: Thu, 23 Jun 2005 01:10:54 +0200 From: Andi Kleen To: Peter Buckingham Cc: Andi Kleen , YhLu , linux-kernel@vger.kernel.org Subject: Re: 2.6.12 with dual way dual core ck804 MB Message-ID: <20050622231053.GB14251@wotan.suse.de> References: <3174569B9743D511922F00A0C94314230A40468C@TYANWEB> <20050621221218.GE14251@wotan.suse.de> <42B9E582.80408@pantasys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <42B9E582.80408@pantasys.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 22, 2005 at 03:26:10PM -0700, Peter Buckingham wrote: > Andi Kleen wrote: > >On Tue, Jun 21, 2005 at 02:41:52PM -0700, YhLu wrote: > >It works for me on several dual core systems, except on a very big > >one that seems to run into a scheduler problem. > > I'm having similar problems with a 16P x86_64. If I boot it with > maxcpus=8 I have no problems. Is there some info that might be useful to > help debug this problem? There are two problems on AMD >8P. First the APIC addressing doesn't work and needs to be done differently (I have a patch for that in the final stages of testing). And then there is a mysterious scheduler deadlock problem in 2.6.12 that I haven't tracked down yet. 2.6.11+patch works though. -Andi