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=-26.2 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,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 0030AC64E7B for ; Tue, 1 Dec 2020 21:40:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A61F52086A for ; Tue, 1 Dec 2020 21:40:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="PhIES9mZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390584AbgLAVjy (ORCPT ); Tue, 1 Dec 2020 16:39:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56340 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390151AbgLAVjs (ORCPT ); Tue, 1 Dec 2020 16:39:48 -0500 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 7BCDEC09426A for ; Tue, 1 Dec 2020 13:37:50 -0800 (PST) Received: by mail-qk1-x74a.google.com with SMTP id s29so2477811qkm.3 for ; Tue, 01 Dec 2020 13:37:50 -0800 (PST) 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=e77AaMfAoOs/rzHffqgIcODt2AF3tTsGcr7ctg09Fiw=; b=PhIES9mZeaV2CcOOl8w4l+2ikBXS+wckgodD2kCIALpUfGhJq/JokBFVnpLyEDHks9 s8KS77HbtwZgIGJAF1Tgq1CMBOT+U0TGPDCswFllP9/Wb/lsfsDB5gnxFlvnlGfpeufY Hy8In8h71u/8sWWwnYUrcWgb/UQdJioTucpyV/6eOUpCpsAT76h4F1u2jVLu4RS0k6r7 PUe2D5YpmZV4+lsiyaOpuXMkzEX6Xy4dTdjoE4jUNMaeybvIa8H1LPOZHv/Qe2/UnLMt PTMAailmADrwZlpd1jeXUYN/0RA5Dv57F0Y3YPHXVxD2ACvJtXUB7QfmCy0vCpyChfJ+ bQ1g== 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=e77AaMfAoOs/rzHffqgIcODt2AF3tTsGcr7ctg09Fiw=; b=kcB4SAPdm6In3U0/eRICT2B+Ua367+8YXTZ1hq85t61khUlR0C+TLfP3jX7TAQVBEd GBMFpO0b4/KkplmIbTSGMyvCthZbpSbOsvtu3hgojLbGj3phJF7mr6B5TPl/ArQNRfhu 703uS4MyRJtmz6rkQQPug2g/plzKocWi0WHqTsA1Ioh3nK14mcHcYoB+AtXxjUmuIzGF Y/6v+IwQlqoydA/BW2HF5LBFwioxziQ7uGdbjSviHsDIGtQsqiR0Bs/lwZvyHmeV11pI 9emFXeotVh8GS3BCnelq/XH5Ndo/zBNxi+aw018nkoOppY1C4xgkelWHYsiqLRYj2MTP wZ2g== X-Gm-Message-State: AOAM532Ymk0sfa20pnngD8iJDEugCaFEHi+EscNwp2Pycl7krM98g1zh PjS90gqeKHnRXx8g3OmlCSq+haBJIU9zaq+/PCc= X-Google-Smtp-Source: ABdhPJweI4qeGM+e2zDq2SHC9xWM5C+tGpvQFN+igQT76ck/RAf7jjMcn/GQMDX+kf4UQlLCPrmaZJR673f61g+6O7E= 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:a0c:a9d0:: with SMTP id c16mr5348289qvb.5.1606858669593; Tue, 01 Dec 2020 13:37:49 -0800 (PST) Date: Tue, 1 Dec 2020 13:37:07 -0800 In-Reply-To: <20201201213707.541432-1-samitolvanen@google.com> Message-Id: <20201201213707.541432-17-samitolvanen@google.com> Mime-Version: 1.0 References: <20201201213707.541432-1-samitolvanen@google.com> X-Mailer: git-send-email 2.29.2.576.ga3fc446d84-goog Subject: [PATCH v8 16/16] arm64: allow LTO to be selected From: Sami Tolvanen To: Masahiro Yamada , Steven Rostedt , Will Deacon Cc: Josh Poimboeuf , Peter Zijlstra , 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, 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 to be enabled. Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook Acked-by: Will Deacon --- arch/arm64/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index c7f07978f5b6..9d29c48ecd4f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -73,6 +73,8 @@ 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_LTO_CLANG_THIN select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && (GCC_VERSION >= 50000 || CC_IS_CLANG) select ARCH_SUPPORTS_NUMA_BALANCING -- 2.29.2.576.ga3fc446d84-goog