From patchwork Wed Nov 18 22:07:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sami Tolvanen X-Patchwork-Id: 11916051 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 735D3C56201 for ; Wed, 18 Nov 2020 22:10:46 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 74BCB246DE for ; Wed, 18 Nov 2020 22:10:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="n0bp9cJv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 74BCB246DE Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-20423-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 7995 invoked by uid 550); 18 Nov 2020 22:08:25 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 7911 invoked from network); 18 Nov 2020 22:08:24 -0000 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=zNEbBbUjVUwNrqsw9c+UpkNEFF7VA0EYfHLp5cIzntw=; b=n0bp9cJvxDsjt7xTCOt5iMFW1d/2tTomLx5U5GAiKgRUC31U0PGdIlVksp+a0VVrdY g5/MehVGAk5dAFkfZ/0D3/kc0qKP/5ghMg0SX2rzCLQrn7ZzkYIMJRTQA4tAkeENX90q zMfWfxpHMr797C3+ufNsF8n5E2EarI0M+SxfmyYFrfheXFRY/USHp0McDL2ojl4Lgr9c ZSVHHwyxFBuJf6EQIB49Tm2/Idyx3u+mRdPPOBh4ppAaY5/pZ300gTIMAOc0hbNqctmz NshfWwPYJRHHUsUv7bRZJJIdOYMWpv3CBbpJoRLYa/A5uDpHU91hRb4ca8tn+CBC/z2v 7wmg== 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=zNEbBbUjVUwNrqsw9c+UpkNEFF7VA0EYfHLp5cIzntw=; b=EoC1Bv/dWqZmiULIBhBdEp4zOQFmZUVWdWG2j8WyPIEmTj9GBxENrhbm6rjz5NpF+T gudTZ5aeVXBeAAQubtmIuDJ6ldPpgkeJAYyjwGDpF106iCaSoaDTJ975tSdbfBmciSjY Advd1sXhN5Tn7I9wsWtU4+r8uFDhyNQ2EyyZvjxeyKHg6z86sTLrWjoXsocB5Q8hRNxW sBKTyVeS8+V6yKGnUOgi436Qxn5inDd+UMwY8CHdBKE+5E5yMSc9W52simgIYjmgcCwl rXvfLRa1mR2oRysUUlyrZ0WAcvrtL2f3uoScnTy3KaD15EXRhfKLna97gQIy/WAv1Vvr egfA== X-Gm-Message-State: AOAM530ttq69zxl0fg9e+YgE+amYynEVmgH6Is4rn1tdO8kPJGVFCCd1 +1Qzh5mDmsbcSBqJ/P33VCr1hofeek+U7Hf2IME= X-Google-Smtp-Source: ABdhPJwWbtiTp58G6aNpNqEPufDWDe2zDs+IKNE1XLpICWlrRQN8YWmIrp5YpIBo0gnH6aOzErytNSLLgd+pskDj6ew= 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:a25:aa04:: with SMTP id s4mr8172287ybi.285.1605737293084; Wed, 18 Nov 2020 14:08:13 -0800 (PST) Date: Wed, 18 Nov 2020 14:07:31 -0800 In-Reply-To: <20201118220731.925424-1-samitolvanen@google.com> Message-Id: <20201118220731.925424-18-samitolvanen@google.com> Mime-Version: 1.0 References: <20201118220731.925424-1-samitolvanen@google.com> X-Mailer: git-send-email 2.29.2.454.gaff20da3a2-goog Subject: [PATCH v7 17/17] arm64: allow LTO_CLANG and THINLTO 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 Allow CONFIG_LTO_CLANG and CONFIG_THINLTO 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..56bd83a764f4 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_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