From mboxrd@z Thu Jan 1 00:00:00 1970 From: Doug Ledford Subject: Re: aic7xxx problem in 2.4.18-SMP Date: Tue, 21 May 2002 13:58:17 -0400 Sender: linux-smp-owner@vger.kernel.org Message-ID: <20020521135817.B2101@redhat.com> References: Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: ; from bunk@physik.hu-berlin.de on Tue, May 21, 2002 at 03:31:35PM +0200 List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Burkhard Bunk Cc: linux-smp@vger.kernel.org, linux-scsi@vger.kernel.org On Tue, May 21, 2002 at 03:31:35PM +0200, Burkhard Bunk wrote: > Hallo, > > it took me some time to boot a SCSI system with the aic7xxx driver > compiled into kernel 2.4.18-SMP. [ snip ] > But with kernel boot options "noapic" or "nosmp" the new driver works! > (both with and without the patch.) And this is the important bit of information. You are having IRQ routing problems. Evidently the smp kernel can not properly set up the apic IRQ routing on your machine. Try going into the BIOS and looking for an option to set the BIOS MPS table to either version 1.1 or 1.4 and try switching it from whatever it is to the other and see if it works. If it doesn't, then you'll just have to add noapic to your default kernel boot line until someone knowledgable in ioapic issues can resolve your machine's problem. -- Doug Ledford 919-754-3700 x44233 Red Hat, Inc. 1801 Varsity Dr. Raleigh, NC 27606