From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935893AbcKJRVJ (ORCPT ); Thu, 10 Nov 2016 12:21:09 -0500 Received: from Galois.linutronix.de ([146.0.238.70]:33898 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935840AbcKJRVH (ORCPT ); Thu, 10 Nov 2016 12:21:07 -0500 Date: Thu, 10 Nov 2016 18:18:29 +0100 (CET) From: Thomas Gleixner To: Michael Thayer cc: Michal Necasek , prarit@redhat.com, ville.syrjala@linux.intel.com, frank.mehnert@oracle.com, knut.osmundsen@oracle.com, linux-kernel@vger.kernel.org Subject: Re: 4.8.2 not booting in 32-bit VM without I/O-APIC In-Reply-To: <9d85a95e-332c-db85-8e62-2015de8ecb85@oracle.com> Message-ID: References: <9d85a95e-332c-db85-8e62-2015de8ecb85@oracle.com> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 10 Nov 2016, Michael Thayer wrote: > On 03.11.2016 21:02, Michal Necasek wrote: > > Sorry for the delay. I can confirm that the problem is fixed in > > 4.9.0-rc3 and prefill_possible_map no longer crashes (as it did in > > 4.9.0-rc2). Thank you! > > > > Just a side question, is the previous fix in commit ff8560512b > > (x86/boot/smp: Don't try to poke disabled/non-existent APIC) actually > > still required or would the no-op APIC driver take care of it? > > Sorry for the delay too (holiday-related). I tested 4.9.0rc4 on a 32-bit No problem. I hope you enjoyed your well earned vacation :) > VirtualBox virtual machine without I/O-APIC and can confirm that it now boots. > Since I am at it, the OHCI timer wheel-related problems are also no longer > reproducible. Thanks for reporting back! tglx