From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753318AbcCLT5r (ORCPT ); Sat, 12 Mar 2016 14:57:47 -0500 Received: from www.linutronix.de ([62.245.132.108]:41633 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751750AbcCLT5i (ORCPT ); Sat, 12 Mar 2016 14:57:38 -0500 Date: Sat, 12 Mar 2016 20:56:05 +0100 (CET) From: Thomas Gleixner To: Ingo Molnar cc: LKML , Harry Junior , Tony Luck , x86@kernel.org, Peter Zijlstra , Joe Lawrence , Borislav Petkov Subject: Re: [PATCH] x86/irq: Cure live lock in irq_force_complete_move() In-Reply-To: <20160312152351.GC7015@gmail.com> Message-ID: References: <20160312152351.GC7015@gmail.com> User-Agent: Alpine 2.11 (DEB 23 2013-08-11) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 12 Mar 2016, Ingo Molnar wrote: > Cool fix!! :-) Not so cool, as it's not correct. Working on it ... > How much time did it take for you to figure out this one?? ... Harry provided backtraces of all cpus, so figuring out what was wrong was not the problem, but wrapping the head around a fix still is one :)