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=-20.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 AD394C43464 for ; Fri, 18 Sep 2020 20:16:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 51D792074B for ; Fri, 18 Sep 2020 20:16:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="qivt17C4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726762AbgIRUQC (ORCPT ); Fri, 18 Sep 2020 16:16:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53022 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726690AbgIRUPp (ORCPT ); Fri, 18 Sep 2020 16:15:45 -0400 Received: from mail-qk1-x74a.google.com (mail-qk1-x74a.google.com [IPv6:2607:f8b0:4864:20::74a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2C34C0613D0 for ; Fri, 18 Sep 2020 13:15:44 -0700 (PDT) Received: by mail-qk1-x74a.google.com with SMTP id w64so5584033qkc.14 for ; Fri, 18 Sep 2020 13:15:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=vY4wvL91lX+XoPJtjETBJ0Jod2fr7hSe9gEwviH1PQg=; b=qivt17C4c3k3DwY8yxkDax/XSYLbBnJNnBYPw2ZM9Gn/ZE0fIpcsHSVm+mQlhKjakH ACLHPBDSrN9QhIs+2oMundPSpouSZPRbj9HW414qGcxUL8RP/Qw81qBg3hFyQmOJVd70 36vk+fW3SMvGQBxWNMXr5dCR/MCgbY301VpVmDNnr0VCgN2sZLUw+BrVWaduLhzw5SZv rv8S8puJ+RnceNDh0B4fMoiQfngBeVpOdbwRVQ/hhKlaWSqX5BsgHyNznIZZ8LnydZBh YrVXnwczP2gFi6vqoYxTjLvwOSb3+MWNcxlFSbiyja8iKC/0zZ8liDgrrBt8Hk4cr/64 UQCQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=vY4wvL91lX+XoPJtjETBJ0Jod2fr7hSe9gEwviH1PQg=; b=QUY8rePfSLdUB6ha1jnkdyMsDBOIMcoVhUep9P2Ft+6UnDvVFgwzYRJtxGQ3QulMVl c+oBg2SoPMOQzkthSJbO5xzGwscbtSWOh45csczn+T/SBIkks1EyqNX3n+tZ0XTbMyL7 ODObETWicim77UBl0wzpZGoGg/FcojSq2R13M/Yau9hvWlyylMq5Iy1b/dPYvpe7QAoh Drr9uUZ5t0yr8ownLKau0yDCVEKN7gVoo0uEWISsaQ+H0UDI4D8xo4WvT86i3dmF7R9e tip4VihiuMdzhI5ajRvG7I33s/dKkD7nzIC856/v6xq9sBkythLHaskCebxgy/kz0rJP 3KQQ== X-Gm-Message-State: AOAM532kkW72Vgj2O4LuCsP5xk3zhYz5dNCpLb7sg4jjy9v6fl1fZQP6 vedAnL6fCF5xso07+5cwHeqfPOQYMqM/JOTXdlw= X-Google-Smtp-Source: ABdhPJxx/ZB+iAIYYGWthfZ5MCRw4ljJiAxyhQbM9fSoZJcW8J3//Xuvzi/v3xFDYUKOn6kD1n3mDEB16b4Qbpmiyyg= Sender: "samitolvanen via sendgmr" X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:ad4:55ec:: with SMTP id bu12mr35584454qvb.0.1600460143930; Fri, 18 Sep 2020 13:15:43 -0700 (PDT) Date: Fri, 18 Sep 2020 13:14:33 -0700 In-Reply-To: <20200918201436.2932360-1-samitolvanen@google.com> Message-Id: <20200918201436.2932360-28-samitolvanen@google.com> Mime-Version: 1.0 References: <20200918201436.2932360-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.681.g6f77f65b4e-goog Subject: [PATCH v3 27/30] arm64: allow LTO_CLANG and THINLTO to be selected From: Sami Tolvanen To: Masahiro Yamada , Will Deacon Cc: Peter Zijlstra , Steven Rostedt , Greg Kroah-Hartman , "Paul E. McKenney" , Kees Cook , Nick Desaulniers , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, x86@kernel.org, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Allow CONFIG_LTO_CLANG and CONFIG_THINLTO to be enabled. Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook --- arch/arm64/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 6d232837cbee..2699fc5d332e 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -72,6 +72,8 @@ config ARM64 select ARCH_USE_SYM_ANNOTATIONS select ARCH_SUPPORTS_MEMORY_FAILURE select ARCH_SUPPORTS_SHADOW_CALL_STACK if CC_HAVE_SHADOW_CALL_STACK + select ARCH_SUPPORTS_LTO_CLANG + select ARCH_SUPPORTS_THINLTO select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && (GCC_VERSION >= 50000 || CC_IS_CLANG) select ARCH_SUPPORTS_NUMA_BALANCING -- 2.28.0.681.g6f77f65b4e-goog