From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752013AbcG2FUT (ORCPT ); Fri, 29 Jul 2016 01:20:19 -0400 Received: from mail-pf0-f196.google.com ([209.85.192.196]:33222 "EHLO mail-pf0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751368AbcG2FUR (ORCPT ); Fri, 29 Jul 2016 01:20:17 -0400 Subject: Re: Build failure in linux mainline when building arcv2 images To: Guenter Roeck References: <579ACC26.9020106@roeck-us.net> Cc: linux-snps-arc@lists.infradead.org, "linux-kernel@vger.kernel.org" , Jeff Moyer , Alexey Brodkin From: Vineet Gupta Organization: Synopsys Message-ID: <25e43ee1-5015-9dc3-777e-6101872f2ec4@synopsys.com> Date: Thu, 28 Jul 2016 22:20:12 -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: <579ACC26.9020106@roeck-us.net> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. Thx, -Vineet