From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964953AbeBLQeS (ORCPT ); Mon, 12 Feb 2018 11:34:18 -0500 Received: from mail.kernel.org ([198.145.29.99]:48396 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964902AbeBLQeR (ORCPT ); Mon, 12 Feb 2018 11:34:17 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 603E121774 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=mhiramat@kernel.org Date: Tue, 13 Feb 2018 01:34:14 +0900 From: Masami Hiramatsu To: kbuild test robot Cc: kbuild-all@01.org, Ingo Molnar , linux-kernel@vger.kernel.org, Thomas Gleixner , "H . Peter Anvin" , x86@kernel.org Subject: Re: [PATCH] x86/decoder: Update UD0 to have operands Message-Id: <20180213013414.bc8ee339bf7999149acc6636@kernel.org> In-Reply-To: <201802110336.UCMZHvli%fengguang.wu@intel.com> References: <151810306983.8735.9310416186567188423.stgit@devbox> <201802110336.UCMZHvli%fengguang.wu@intel.com> X-Mailer: Sylpheed 3.5.0 (GTK+ 2.24.30; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 11 Feb 2018 03:26:12 +0800 kbuild test robot wrote: > Hi Masami, > > I love your patch! Perhaps something to improve: > > [auto build test WARNING on tip/auto-latest] > [also build test WARNING on v4.15 next-20180209] > [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/Masami-Hiramatsu/x86-decoder-Update-UD0-to-have-operands/20180211-013327 > config: x86_64-acpi-redef (attached as .config) > compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 > reproduce: > # save the attached .config to linux build tree > make ARCH=x86_64 > > All warnings (new ones prefixed by >>): > > >> drivers/regulator/devres.o: warning: objtool: devm_regulator_unregister_notifier()+0x2e: can't decode instruction > -- > >> sound/core/info.o: warning: objtool: snd_info_get_line()+0x9: can't find jump dest instruction at .text+0x8b5 > -- > >> sound/core/sound_oss.o: warning: objtool: snd_oss_kernel_minor()+0x5: can't find jump dest instruction at .text+0x36 > -- > >> sound/core/hwdep.o: warning: objtool: snd_hwdep_dsp_load()+0x78: can't find jump dest instruction at .text+0x5fa > -- > >> sound/core/timer.o: warning: objtool: snd_timer_notify()+0x49: return with modified stack frame > -- > >> sound/core/hrtimer.o: warning: objtool: snd_hrtimer_callback()+0x62: can't find jump dest instruction at .text+0x108 > -- > >> sound/core/pcm_lib.o: warning: objtool: snd_pcm_playback_silence()+0x17b: can't find jump dest instruction at .text+0x9b9 > -- > >> sound/drivers/opl3/opl3_lib.o: warning: objtool: snd_opl3_create()+0x1f5: can't find jump dest instruction at .text+0x628 > -- > >> sound/drivers/opl3/opl3_midi.o: warning: objtool: snd_opl3_kill_voice()+0x9: can't find jump dest instruction at .text+0x12 > -- > >> drivers/media/dvb-core/dvb_math.o: warning: objtool: intlog2()+0x2: can't find jump dest instruction at .text+0x9 > -- > >> drivers/gpu/drm/ttm/ttm_execbuf_util.o: warning: objtool: ttm_eu_backoff_reservation()+0x64: can't find jump dest instruction at .text+0xb5 > .. Ugg, OK this is what I worried about :( This might mean gcc generated UD0 without MODRM binary but the tool check it with MODRM... I will check it. Thanks, -- Masami Hiramatsu