From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261243AbTEMNvH (ORCPT ); Tue, 13 May 2003 09:51:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261244AbTEMNvH (ORCPT ); Tue, 13 May 2003 09:51:07 -0400 Received: from deviant.impure.org.uk ([195.82.120.238]:60810 "EHLO deviant.impure.org.uk") by vger.kernel.org with ESMTP id S261243AbTEMNvG (ORCPT ); Tue, 13 May 2003 09:51:06 -0400 Date: Tue, 13 May 2003 15:03:54 +0100 From: Dave Jones To: john stultz Cc: lkml , Andrew Morton , Alan Cox , James Subject: Re: [PATCH] linux-2.5.69_clear-smi-fix_A1 Message-ID: <20030513140354.GB676@suse.de> Mail-Followup-To: Dave Jones , john stultz , lkml , Andrew Morton , Alan Cox , James References: <1052785802.4169.12.camel@w-jstultz2.beaverton.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1052785802.4169.12.camel@w-jstultz2.beaverton.ibm.com> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 12, 2003 at 05:30:03PM -0700, john stultz wrote: > I've been having problems with ACPI on a box here in our lab. Some of > our more recent hardware requires that SMIs are routed through the > IOAPIC, thus when we clear_IO_APIC() at boot time, we clear the BIOS > initialized SMI pin. This basically clobbers the SMI so we can then > never make the transition into ACPI mode. > > This patch simply reads the apic entry in clear_IO_APIC to make sure the > delivery_mode isn't dest_SMI. If it is, we leave the apic entry alone > and return. > > With this patch, the box boots and SMIs function properly. There's a whole bunch of 'ACPI buggers up interrupt routing' bugs in bugzilla right now, I wonder if this could help out with those. Dave