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=-24.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 16314C1551E for ; Wed, 10 Mar 2021 13:25:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D4DBE650BB for ; Wed, 10 Mar 2021 13:25:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233175AbhCJNZB (ORCPT ); Wed, 10 Mar 2021 08:25:01 -0500 Received: from mail.kernel.org ([198.145.29.99]:45530 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232801AbhCJNYU (ORCPT ); Wed, 10 Mar 2021 08:24:20 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 35CF364FDC; Wed, 10 Mar 2021 13:24:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615382659; bh=MGAbaYS2VLHF+41cYp6gSoNytNrnYuD2FCGYbIVS7Ag=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TxOL+kHpsr7ezRCABrZye0l6p5yNd4PtHr2ZqJfwb3yTvIhk3xEBios/jKl/JxdPD ypRY9VEZf7jsr7Hl2prlF3gujfioqJrWnujVlsKkYu+Vf7wN6k86WLORHY52q3oEaS Hklz46tbUH5TP/bDHY+yXbZ7cfGmDDu9kL9NLG8Y= From: gregkh@linuxfoundation.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Arnd Bergmann , Nathan Chancellor , Nick Desaulniers , Will Deacon , Sudip Mukherjee Subject: [PATCH 5.11 14/36] arm64: Make CPU_BIG_ENDIAN depend on ld.bfd or ld.lld 13.0.0+ Date: Wed, 10 Mar 2021 14:23:27 +0100 Message-Id: <20210310132320.967051914@linuxfoundation.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210310132320.510840709@linuxfoundation.org> References: <20210310132320.510840709@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Greg Kroah-Hartman From: Nathan Chancellor commit e9c6deee00e9197e75cd6aa0d265d3d45bd7cc28 upstream Similar to commit 28187dc8ebd9 ("ARM: 9025/1: Kconfig: CPU_BIG_ENDIAN depends on !LD_IS_LLD"), ld.lld prior to 13.0.0 does not properly support aarch64 big endian, leading to the following build error when CONFIG_CPU_BIG_ENDIAN is selected: ld.lld: error: unknown emulation: aarch64linuxb This has been resolved in LLVM 13. To avoid errors like this, only allow CONFIG_CPU_BIG_ENDIAN to be selected if using ld.bfd or ld.lld 13.0.0 and newer. While we are here, the indentation of this symbol used spaces since its introduction in commit a872013d6d03 ("arm64: kconfig: allow CPU_BIG_ENDIAN to be selected"). Change it to tabs to be consistent with kernel coding style. Link: https://github.com/ClangBuiltLinux/linux/issues/380 Link: https://github.com/ClangBuiltLinux/linux/issues/1288 Link: https://github.com/llvm/llvm-project/commit/7605a9a009b5fa3bdac07e3131c8d82f6d08feb7 Link: https://github.com/llvm/llvm-project/commit/eea34aae2e74e9b6fbdd5b95f479bc7f397bf387 Reported-by: Arnd Bergmann Signed-off-by: Nathan Chancellor Reviewed-by: Nick Desaulniers Link: https://lore.kernel.org/r/20210209005719.803608-1-nathan@kernel.org Signed-off-by: Will Deacon Signed-off-by: Sudip Mukherjee Signed-off-by: Greg Kroah-Hartman --- arch/arm64/Kconfig | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -952,8 +952,9 @@ choice that is selected here. config CPU_BIG_ENDIAN - bool "Build big-endian kernel" - help + bool "Build big-endian kernel" + depends on !LD_IS_LLD || LLD_VERSION >= 130000 + help Say Y if you plan on running a kernel with a big-endian userspace. config CPU_LITTLE_ENDIAN