From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753632AbcG2UEO (ORCPT ); Fri, 29 Jul 2016 16:04:14 -0400 Received: from smtprelay.synopsys.com ([198.182.47.9]:59807 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753592AbcG2UEI (ORCPT ); Fri, 29 Jul 2016 16:04:08 -0400 Subject: Re: Build failure in linux mainline when building arcv2 images To: Guenter Roeck References: <579ACC26.9020106@roeck-us.net> <25e43ee1-5015-9dc3-777e-6101872f2ec4@synopsys.com> <579B5D79.8060907@roeck-us.net> CC: , "linux-kernel@vger.kernel.org" , Jeff Moyer , "Alexey Brodkin" Newsgroups: gmane.linux.kernel,gmane.linux.kernel.arc From: Vineet Gupta Message-ID: <66774d12-285a-438f-c050-fba65601bd3c@synopsys.com> Date: Fri, 29 Jul 2016 13:03:56 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <579B5D79.8060907@roeck-us.net> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.9.130.102] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/29/2016 06:43 AM, Guenter Roeck wrote: > On 07/28/2016 10:20 PM, Vineet Gupta wrote: >> Hi Guenter, >> >> On 07/28/2016 08:23 PM, Guenter Roeck wrote: >>> Hi Vineet, >>> >>> Mainline fails to build arcv2 images with the following error. >>> >>> {standard input}: Assembler messages: >>> {standard input}:19174: Error: Instruction with long immediate data in delay slot >>> make[2]: *** [block/cfq-iosched.o] Error 1 >>> >>> Bisect points to commit 9a7f38c42c2 ("cfq-iosched: Convert from jiffies to >>> nanoseconds"), >>> but I don't really hold it responsible. It looks more like a compiler / binutils >>> problem >>> to me. >> >> Indeed - triggers a latent bug in ARC gcc ! >> >>> I am using a toolchain built with buildroot (gcc 4.8.3). Is there a more recent >>> toolchain >>> than the one in buildroot available, by any chance ? If yes, where do I find it ? >> >> Yeah there's a 4.8.5 based one (referred to as GNU 2016.03) - will prebuilt >> toolchain suffice or would you prefer building on your own. Prebuilt could be >> found below. >> >> https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/tag/arc-2016.03 >> >> >> For building on your own, Alexey can point to upstream buildroot which enabled >> 2016.03 tools. >> > > Unfortunately, I get the same error when using "arc-linux-gcc.br_real (Buildroot > 2016.05) 4.8.5". Weird - I don't see this when building mainline of now using prebuilt 2016.03 tools on github . I'm building axs103_smp_defconfig. What exact buildroot commit did u use to build your tools BTW - I can try and replicate that here ! Thx, -Vineet