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=-6.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 B9B0CC43441 for ; Sun, 11 Nov 2018 22:31:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 61FA5224E0 for ; Sun, 11 Nov 2018 22:31:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="WTtesWSw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 61FA5224E0 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389821AbeKLIVj (ORCPT ); Mon, 12 Nov 2018 03:21:39 -0500 Received: from mail.kernel.org ([198.145.29.99]:49272 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389761AbeKLIVh (ORCPT ); Mon, 12 Nov 2018 03:21:37 -0500 Received: from localhost (unknown [206.108.79.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 05431224B3; Sun, 11 Nov 2018 22:31:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541975500; bh=1ICxfcL/TFd/yyMU1GG4B99XEkJVRPOTwet093rOpZs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WTtesWSw6TqaN1U4ztuSkoCc5cWjGra7l4gafarnADjlxC4bj9HJj0Zku1ztapkOv a+O+rJs2Q8680PpITILAWC+QZMfoo6OHyNSMeB/d/wmpx5HDmwf+mw40ZAOQkJdHVg yEgiQWvWQ20fQGCpnIa5Ao92V/DZ+6NJOcOVFQao= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nick Desaulniers , Will Deacon , Tri Vo , Catalin Marinas Subject: [PATCH 4.18 307/350] arm64: lse: remove -fcall-used-x0 flag Date: Sun, 11 Nov 2018 14:22:51 -0800 Message-Id: <20181111221720.920755607@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181111221707.043394111@linuxfoundation.org> References: <20181111221707.043394111@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tri Vo commit 2a6c7c367de82951c98a290a21156770f6f82c84 upstream. x0 is not callee-saved in the PCS. So there is no need to specify -fcall-used-x0. Clang doesn't currently support -fcall-used flags. This patch will help building the kernel with clang. Tested-by: Nick Desaulniers Acked-by: Will Deacon Signed-off-by: Tri Vo Signed-off-by: Catalin Marinas Signed-off-by: Greg Kroah-Hartman --- arch/arm64/lib/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/arm64/lib/Makefile +++ b/arch/arm64/lib/Makefile @@ -12,7 +12,7 @@ lib-y := bitops.o clear_user.o delay.o # when supported by the CPU. Result and argument registers are handled # correctly, based on the function prototype. lib-$(CONFIG_ARM64_LSE_ATOMICS) += atomic_ll_sc.o -CFLAGS_atomic_ll_sc.o := -fcall-used-x0 -ffixed-x1 -ffixed-x2 \ +CFLAGS_atomic_ll_sc.o := -ffixed-x1 -ffixed-x2 \ -ffixed-x3 -ffixed-x4 -ffixed-x5 -ffixed-x6 \ -ffixed-x7 -fcall-saved-x8 -fcall-saved-x9 \ -fcall-saved-x10 -fcall-saved-x11 -fcall-saved-x12 \