From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261173AbVAAUaP (ORCPT ); Sat, 1 Jan 2005 15:30:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261177AbVAAUaP (ORCPT ); Sat, 1 Jan 2005 15:30:15 -0500 Received: from mail.tmr.com ([216.238.38.203]:41160 "EHLO gaimboi.tmr.com") by vger.kernel.org with ESMTP id S261173AbVAAUaJ (ORCPT ); Sat, 1 Jan 2005 15:30:09 -0500 Message-ID: <41D70AF4.7030901@tmr.com> Date: Sat, 01 Jan 2005 15:41:24 -0500 From: Bill Davidsen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040616 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Alan Cox CC: mingo@redhat.com, Linux Kernel Mailing List Subject: Re: PATCH: 2.6.10 - Misrouted IRQ recovery for review References: <1104249508.22366.101.camel@localhost.localdomain> In-Reply-To: <1104249508.22366.101.camel@localhost.localdomain> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Alan Cox wrote: > Ported to the new kernel/irq code. [snip] > } else { > - printk(KERN_ERR "irq %d: nobody cared!\n", irq); > + printk(KERN_ERR "irq %d: nobody cared (try booting with the \"irqpoll\" option.\n", irq); > } > dump_stack(); > printk(KERN_ERR "handlers:\n"); [snip] I saw this message coming out of ac2 with my runaway IRQ 18 problem, so I tried irqpoll, and it just "went away" beyond sysreq or other gentle recovery. I suspect that the problem lies in sharing the shared IRQ, and that polling doesn't solve the problem, just changes it to a hang witing for the misrouted IRQ. Still poking for the real cause, no patch or anything, but acpi={off,ht}, noapic, pci=routeirq, etc have no benefit (for me). -- bill davidsen CTO TMR Associates, Inc Doing interesting things with small computers since 1979