From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 23 May 2001 04:34:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 23 May 2001 04:34:42 -0400 Received: from indyio.rz.uni-sb.de ([134.96.7.3]:32773 "EHLO indyio.rz.uni-sb.de") by vger.kernel.org with ESMTP id ; Wed, 23 May 2001 04:34:35 -0400 Message-ID: <3B0B7616.B9F09B8B@stud.uni-saarland.de> Date: Wed, 23 May 2001 08:34:30 +0000 From: Studierende der Universitaet des Saarlandes Reply-To: manfred@colorfullife.com Organization: Studierende Universitaet des Saarlandes X-Mailer: Mozilla 4.08 [en] (X11; I; Linux 2.0.36 i686) MIME-Version: 1.0 To: arvai@scripps.edu, linux-kernel@vger.kernel.org CC: manfred@colorfullife.com Subject: Re: noapic doesn't quite work as advertised Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > 've got a tyan s2520 motherboard (dual PIII + i840) which is having a > problem with APIC errors. I tried running with noapic, but there were > still errors, although fewer. Does anyone have any idea what is going > on? I'm running 2.4.4 and software raid5, which generates a lot of > interrupts. noapic only prevents that hardware interrupts are rerouted through the io apic. The inter processor interrupts still use the apic bus, and it's impossible to use SMP without IPIs. > Right now I'm running with noapic and nosmp and so far this seems to > be working. I really would like to be able to use the second > cpu so any suggestion would be greatly appreciated. It could be a hardware problem, or the board uses an unusal io apic that's not properly handled. If you boot without noapic, are there any unusual message in the boot log? Perhaps MP-BIOS bug unknown io apic etc.