From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57FB3C433DB for ; Wed, 27 Jan 2021 21:13:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1BED964DA1 for ; Wed, 27 Jan 2021 21:13:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233989AbhA0VMw (ORCPT ); Wed, 27 Jan 2021 16:12:52 -0500 Received: from elvis.franken.de ([193.175.24.41]:60509 "EHLO elvis.franken.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233905AbhA0VLw (ORCPT ); Wed, 27 Jan 2021 16:11:52 -0500 Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1l4s5l-0003cQ-05; Wed, 27 Jan 2021 22:11:09 +0100 Received: by alpha.franken.de (Postfix, from userid 1000) id 9C4DFC0AAF; Wed, 27 Jan 2021 22:07:57 +0100 (CET) Date: Wed, 27 Jan 2021 22:07:57 +0100 From: Thomas Bogendoerfer To: Tiezhu Yang Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Xuefeng Li , Alexander Potapenko Subject: Re: [PATCH] MIPS: Fix inline asm input/output type mismatch in checksum.h used with Clang Message-ID: <20210127210757.GF21002@alpha.franken.de> References: <1611722507-12017-1-git-send-email-yangtiezhu@loongson.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1611722507-12017-1-git-send-email-yangtiezhu@loongson.cn> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 27, 2021 at 12:41:47PM +0800, Tiezhu Yang wrote: > Fix the following build error when make M=samples/bpf used with Clang: > > CLANG-bpf samples/bpf/sockex2_kern.o > In file included from samples/bpf/sockex2_kern.c:7: > In file included from ./include/uapi/linux/if_tunnel.h:7: > In file included from ./include/linux/ip.h:16: > In file included from ./include/linux/skbuff.h:28: > In file included from ./include/net/checksum.h:22: > ./arch/mips/include/asm/checksum.h:161:9: error: unsupported inline asm: input with type 'unsigned long' matching output with type '__wsum' (aka 'unsigned int') > : "0" ((__force unsigned long)daddr), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 1 error generated. > > This is a known issue on MIPS [1], the changed code can be compiled > successfully by both GCC and Clang. > > [1] https://lore.kernel.org/linux-mips/CAG_fn=W0JHf8QyUX==+rQMp8PoULHrsQCa9Htffws31ga8k-iw@mail.gmail.com/ > > Signed-off-by: Tiezhu Yang > --- > arch/mips/include/asm/checksum.h | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) applied to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]