Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423076AbXBUUSY (ORCPT ); Wed, 21 Feb 2007 15:18:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1423077AbXBUUSY (ORCPT ); Wed, 21 Feb 2007 15:18:24 -0500 Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:33764 "EHLO ebiederm.dsl.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423076AbXBUUSX (ORCPT ); Wed, 21 Feb 2007 15:18:23 -0500 From: ebiederm@xmission.com (Eric W. Biederman) To: Andrew Morton Cc: Chuck Ebbert , Andi Kleen , Greg KH , linux-kernel@vger.kernel.org, stable@kernel.org, Justin Forbes , Zwane Mwaikambo , "Theodore Ts'o" , Randy Dunlap , Dave Jones , Chuck Wolber , Chris Wedgwood , Michael Krufky , torvalds@linux-foundation.org, alan@lxorguk.ukuu.org.uk Subject: Re: [patch 00/21] 2.6.19-stable review References: <20070221013619.GA30227@kroah.com> <45DC9E1D.40805@redhat.com> <20070221114737.a09be761.akpm@linux-foundation.org> Date: Wed, 21 Feb 2007 13:13:16 -0700 In-Reply-To: <20070221114737.a09be761.akpm@linux-foundation.org> (Andrew Morton's message of "Wed, 21 Feb 2007 11:47:37 -0800") Message-ID: User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2078 Lines: 55 Andrew Morton writes: > On Wed, 21 Feb 2007 14:31:41 -0500 > Chuck Ebbert wrote: >> What is the status of: >> >> > http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20/2.6.20-mm2/broken-out/x86_64-mm-simplfy-__assign_irq_vector.patch >> > http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20/2.6.20-mm2/broken-out/x86_64-mm-handle-irqs-pending-in-irr-during-irq-migration.patch > > That's mainly an Andi decision. Let's cc him. > >> They fix a serious bug that causes machines to freeze up >> or just run very slowly. >> >> I'd like to see these in -stable if possible. > > They're not even in mainline yet. If you don't have it you at least want the patch below. It generally makes the bug non-fatal. I'm still working my way through possible fixes... Although the patch in question is close, and normally fixes it in my utmost paranoia I can still find problems with it. Eric commit 2fb12a9bca5ad9aa6dcd2c639b4a7656a8843ef8 Author: Eric W. Biederman Date: Tue Feb 13 13:26:25 2007 +0100 [PATCH] x86-64: survive having no irq mapping for a vector Occasionally the kernel has bugs that result in no irq being found for a given cpu vector. If we acknowledge the irq the system has a good chance of continuing even though we dropped an irq message. If we continue to simply print a message and not acknowledge the irq the system is likely to become non-responsive shortly there after. AK: Fixed compilation for UP kernels Signed-off-by: Eric W. Biederman Signed-off-by: Andi Kleen Cc: "Luigi Genoni" Cc: Andi Kleen Signed-off-by: Andrew Morton - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/