From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753110AbcEPC5J (ORCPT ); Sun, 15 May 2016 22:57:09 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:36680 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752773AbcEPC5H (ORCPT ); Sun, 15 May 2016 22:57:07 -0400 To: stable , Linux MIPS Mailing List , Ben Hutchings , Li Zefan , "linux-kernel@vger.kernel.org" From: Guenter Roeck Subject: Building older mips kernels with different versions of binutils; possible patch for 3.2 and 3.4 Message-ID: <573936E3.3050003@roeck-us.net> Date: Sun, 15 May 2016 19:56:35 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.7.2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated_sender: linux@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: authenticated_id: linux@roeck-us.net X-Authenticated-Sender: bh-25.webhostbox.net: linux@roeck-us.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi folks, building mips images with a consistent infrastructure is becoming more and more difficult. Current state is as follows. Binutils/ 2.22 2.24 2.25 Kernel 3.2 X - - 3.4 X - - 3.10 X X - 3.14 X X - 3.16 X X - 3.18 X X (X) [1] 4.1 X X (X) 4.4 X X (X) 4.5 X X (X) 4.6 X X (X) next - X (X) [1] (at least) allnoconfig fails to build with binutils 2.25 (2.25.1, more specifically). I used the following toolchains for the above tests: - Poky 1.3 (binutils 2.22) - Poky 2.0 (binutils 2.25.1) - gcc-4.6.3-nolibc from kernel.org (binutils 2.22) - gcc-4.9.0-nolibc from kernel.org (binutils 2.24) For 3.4 and 3.2 kernels to build with binutils v2.24, it would be necessary to apply patch c02263063362 ("MIPS: Refactor 'clear_page' and 'copy_page' functions"). It applies cleanly to 3.4, but has a Makefile conflict in 3.2. It might make sense to apply this patch to both releases. Would this be possible ? This way, we would have at least one toolchain which can build all 3.2+ kernels. Thanks, Guenter