From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965197AbXCQKdx (ORCPT ); Sat, 17 Mar 2007 06:33:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965309AbXCQKdx (ORCPT ); Sat, 17 Mar 2007 06:33:53 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:38516 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965197AbXCQKdx (ORCPT ); Sat, 17 Mar 2007 06:33:53 -0400 Subject: Re: [BUG] 2.6.21-rc1,2,3 regressions on my system that I found so far From: Arjan van de Ven To: Len Brown Cc: tglx@linutronix.de, Maxim Levitsky , linux-kernel@vger.kernel.org, Ingo Molnar , Andrew Morton , Adrian Bunk In-Reply-To: <200703162132.53906.lenb@kernel.org> References: <200703161230.03712.maximlevitsky@gmail.com> <1174088686.13341.347.camel@localhost.localdomain> <200703162132.53906.lenb@kernel.org> Content-Type: text/plain Organization: Intel International BV Date: Sat, 17 Mar 2007 11:32:19 +0100 Message-Id: <1174127539.3538.207.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.8.3 (2.8.3-1.fc6) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2007-03-16 at 21:32 -0400, Len Brown wrote: > On Friday 16 March 2007 19:44, Thomas Gleixner wrote: > > Maxim, > > > > On Fri, 2007-03-16 at 12:30 +0200, Maxim Levitsky wrote: > > > 3) Sometimes I get this (once in three boots or so) > > > > > > [ 36.217405] ENABLING IO-APIC IRQs > > > [ 36.217587] ..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1 > > > [ 36.433917] APIC timer disabled due to verification failure. > > > > > > And NO_HZ is disabled due to that (I get 1000/s timer's interrupts) > > > I haven't investigated that yet. > > > It looks like another new test that my hardware fails to perform... > > > > Yes, this is probably caused by SMM code trying to emulate a PS/2 > > keyboard from a (maybe connected or not) USB keyboard. Unfortunately we > > have no way to disable this BIOS misfeature in the early boot process. > > Arjan, Len ????? > > Nope. By definition, SMM is invisible to the OS -- we don't even > get a bit that said it occurred (though we'd like one -- it would > be really helpful to diagnose issues like this one) well we can do the handshake to take ownership like we do much later in boot, but that requires PCI to be there and fully discovered, which we don't have this early. -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org