From patchwork Fri Sep 18 20:14:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sami Tolvanen X-Patchwork-Id: 11786075 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6F1DE112E for ; Fri, 18 Sep 2020 20:16:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 49A6C23888 for ; Fri, 18 Sep 2020 20:16:10 +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 S1726766AbgIRUQG (ORCPT ); Fri, 18 Sep 2020 16:16:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53020 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726688AbgIRUPp (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 C2186C0613CF for ; Fri, 18 Sep 2020 13:15:44 -0700 (PDT) Received: by mail-qk1-x74a.google.com with SMTP id y17so5578880qkf.15 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=kbzob54gRlJ59bmIr+q1L/DFuLD/gwFc7pZO6nR97oa5Gcj4odx0yFrTNJXpq3filv CH7+YxhBuFjrEmvLP+EzV9mNhVkjH9J6JxzvaKQQuWT4aPlqccESKFwo0CWeSrG3R7Va YZ4cm7/0dkonzar91JQ4oKhs+x6aDMFDaiGBdHPWfRFFGRauKyOGQtAp0vw53slYk3nx mVKYbAPaZK4X1fKxAyloFY1hK1YrxxYuza45ktxoz9LK+7XERoMEM7Dz0kOXsO9pjdYg J30fKGg1dTQ+3yD72lcVwTt4cR7meyMONP56uqSeWaeg1D/Nv5urPt8quCfxPAjwNr/X mBWg== X-Gm-Message-State: AOAM532lgFFpgFbA168P6GmAZon7PoD1rJ6uQZkGagVV5Gv+Tkllp+qv /aUX3NWRwITn+wk6TSYDnO4ajsT4w2lM1DyUfBY= 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 Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@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