From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752260AbeBCLoY (ORCPT ); Sat, 3 Feb 2018 06:44:24 -0500 Received: from merlin.infradead.org ([205.233.59.134]:39234 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751617AbeBCLoQ (ORCPT ); Sat, 3 Feb 2018 06:44:16 -0500 Date: Sat, 3 Feb 2018 12:43:56 +0100 From: Peter Zijlstra To: kbuild test robot Cc: kbuild-all@01.org, Stafford Horne , Will Deacon , Paul McKenney , Jonas Bonn , Stefan Kristiansson , David Howells , Arnd Bergmann , linux-kernel@vger.kernel.org, Thomas Gleixner Subject: Re: asm-generic: Disallow no-op mb() for SMP systems Message-ID: <20180203114356.GV2269@hirez.programming.kicks-ass.net> References: <20180131130034.GR2269@hirez.programming.kicks-ass.net> <201802030203.kIXRmGUe%fengguang.wu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201802030203.kIXRmGUe%fengguang.wu@intel.com> User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Feb 03, 2018 at 03:14:01AM +0800, kbuild test robot wrote: > Hi Peter, > > I love your patch! Yet something to improve: > > [auto build test ERROR on asm-generic/master] > [also build test ERROR on v4.15 next-20180202] > [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] > > url: https://github.com/0day-ci/linux/commits/Peter-Zijlstra/asm-generic-Disallow-no-op-mb-for-SMP-systems/20180203-000108 > base: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master > config: mn10300-asb2364_defconfig (attached as .config) > compiler: am33_2.0-linux-gcc (GCC) 7.2.0 David, this one is yours :-) Does that mn10300 thing really have sequentially consistent SMP (no store buffers or anything?)