From patchwork Thu Apr 8 18:28:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sami Tolvanen X-Patchwork-Id: 12192209 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 66C32C433ED for ; Thu, 8 Apr 2021 18:31:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 40314610FC for ; Thu, 8 Apr 2021 18:31:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232913AbhDHSbX (ORCPT ); Thu, 8 Apr 2021 14:31:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48708 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232981AbhDHSaz (ORCPT ); Thu, 8 Apr 2021 14:30:55 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 11D83C0610D2 for ; Thu, 8 Apr 2021 11:29:21 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id k15so2899605ybh.6 for ; Thu, 08 Apr 2021 11:29:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=wpJei33p36j3KjjMHxyiKmG4dj3y1cwd0hIxQebiEdM=; b=a3nRPCcLgUjC8+dAsZsjnXIQNP/rwy/DDjL0mVaRLZUSJLKjLCe23/7r3jufcOURP2 YfreigpdbzFmBPynu7ev4x2f9hGuOwXl1gQNFI+p2gMnNBATgfM6aNqo8eWkwib0f/8F EUNhOz40NxYK4iX4IsYefTQK+m8Ly9vO79flGB3PdZreeWclK/3HsvQa2Eu+zlw9dkH7 6qm5k1CF4uhU9Fd39Czmkl971aNRY+2JAKOGLjLe1yvMJopP7gW/T36sDYdpLNjW4pel /nYjwa7lv0PuEkaqdQpGCQ8z4533FqqU8pmp1ExKErObiCmjnfRuj5TuEngXRWPRbWkv GPuA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=wpJei33p36j3KjjMHxyiKmG4dj3y1cwd0hIxQebiEdM=; b=IiliH7Hvn5J8Pn5oJ4u/HTmQO+4Gf7O+Y4AlQWRUyhCKdDPlmKsH0zakzy+7uNfAH4 q2aHGheR2YiBvJq14zwaRgPIQtHPDcyDXAcm6HahBY7ih6F8dGTHv9QD6y2NBBzDbkOg hZ7oBsqwW+aGY4MafSOF7Y6wDPOzrtnlLgnkckxxaEk/bjz8KolJqecYH5GX/yxbEZvL VarCZpZ+DrMSL6OzJDqJnZX+Lio1Xq9BbzUoKqP0FiWCSRdfJA8ghSN1hs1ntwtm+pOL x8G6iejKrQqLtDCR+jBb0+qVll/7UJHFYknVXWH3cQtDe6o5xiM1OhAVPlB3xzFOZ7Ri bdhA== X-Gm-Message-State: AOAM533/83QaDbS8n/VVvGppx7EINs9MK2LPmWeCCyJJzydlFtIrYCTh zp/Ad/oZhT9E2zaBbHz0FvAK3T3CRaKzdU845p8= X-Google-Smtp-Source: ABdhPJy+nIguXtNRexvJIjrSyuROKE2OJGFq0G34E3vTRN1y9bOJbuovRIfl9/FQBpeHGk7p24GDKVlYncDOiGe0FU8= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:3560:8505:40a2:e021]) (user=samitolvanen job=sendgmr) by 2002:a25:cf16:: with SMTP id f22mr13542667ybg.342.1617906560306; Thu, 08 Apr 2021 11:29:20 -0700 (PDT) Date: Thu, 8 Apr 2021 11:28:43 -0700 In-Reply-To: <20210408182843.1754385-1-samitolvanen@google.com> Message-Id: <20210408182843.1754385-19-samitolvanen@google.com> Mime-Version: 1.0 References: <20210408182843.1754385-1-samitolvanen@google.com> X-Mailer: git-send-email 2.31.1.295.g9ea45b61b8-goog Subject: [PATCH v6 18/18] arm64: allow CONFIG_CFI_CLANG to be selected From: Sami Tolvanen To: Kees Cook Cc: Nathan Chancellor , Nick Desaulniers , Masahiro Yamada , Will Deacon , Jessica Yu , Arnd Bergmann , Tejun Heo , "Paul E. McKenney" , Christoph Hellwig , Peter Zijlstra , Sedat Dilek , Mark Rutland , Catalin Marinas , bpf@vger.kernel.org, linux-hardening@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, Sami Tolvanen Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org Select ARCH_SUPPORTS_CFI_CLANG to allow CFI to be enabled. Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook Tested-by: Nathan Chancellor --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e4e1b6550115..d7395772b6b8 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -75,6 +75,7 @@ config ARM64 select ARCH_SUPPORTS_SHADOW_CALL_STACK if CC_HAVE_SHADOW_CALL_STACK select ARCH_SUPPORTS_LTO_CLANG if CPU_LITTLE_ENDIAN select ARCH_SUPPORTS_LTO_CLANG_THIN + select ARCH_SUPPORTS_CFI_CLANG select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && (GCC_VERSION >= 50000 || CC_IS_CLANG) select ARCH_SUPPORTS_NUMA_BALANCING