From patchwork Thu Sep 3 20:30:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sami Tolvanen X-Patchwork-Id: 11754797 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 BBBA517C7 for ; Thu, 3 Sep 2020 20:34:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9F50920678 for ; Thu, 3 Sep 2020 20:34:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="WYxR9JOX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729645AbgICUeS (ORCPT ); Thu, 3 Sep 2020 16:34:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35462 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729604AbgICUdI (ORCPT ); Thu, 3 Sep 2020 16:33:08 -0400 Received: from mail-pg1-x54a.google.com (mail-pg1-x54a.google.com [IPv6:2607:f8b0:4864:20::54a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9EB34C0611E0 for ; Thu, 3 Sep 2020 13:31:48 -0700 (PDT) Received: by mail-pg1-x54a.google.com with SMTP id g18so2487123pgl.10 for ; Thu, 03 Sep 2020 13:31:48 -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=cZOWhnp892SUnLhqC+1TPlOe8BVqsfDWwTFGwwryYEw=; b=WYxR9JOXeqHMLp90nNI8/6ltDzhvsuYjv6d1zFqp8zsjL+qJYufybBNzAbPMTkNNZl D7MpSi0LlP6FuYPjz4u35DCi8t432jxAgU18y16gIeH1WYnR8Oge5r65aJHFkr+O6ap5 7Jb4/kJwsklpayP8Ru/q1xJFOJRx54JFuZjQSOGJapmUtPdOP08d8KZWkeRlM2D1Swzv SnITw4E+gwFNoLz9DvBEQEulPAjlW7Re+DfF/dU1eZIdgljsqQSczq8cMfTFPUsSyciF mvuZnj+9HqmA+LFzkWAsNTdETxPd/fZaNFdn6zEOPF2B4+IaWN0xMyzjF9d7hiT6GQ2b 54pA== 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=cZOWhnp892SUnLhqC+1TPlOe8BVqsfDWwTFGwwryYEw=; b=ACC63YBmFsiKEQFducXFzLOKACbLp/D/yWoplNarwvnH6YlgLcerz0NDFXHKsXdYdn tOL4VRc0wgMt7rFsHdeWMNAByXzd1lpe2AgcEIL2r8yT+ZuZ6jQZP+hin4Q9rRMg2TSV CILXqCzix/Z4sFksQ7sJ8xsecF0dngz/Rp1ecA0vvdMOiyBuFfFBkOQJ9hxgIoQ9BHJ5 eBH+nPTuG9xkHaaY+Wnu+iyepM8zPmB1QLhdpBxiujmXgAxwc/M957Fj0ibjkWCHFiUJ frlFzl1AROapOWCTA/AN+pspJ+pcgC6lzKaKdg6tXaczjmZbbutdJCmrQt28jyhBpGbZ 7uow== X-Gm-Message-State: AOAM530pjWnXVj4Stj334vQcq135TRflO357UZxvVblk6pZLOWXPfgCB ZiGW0YwSDlO9mIMwZQIH2m03Y4Q2RvWJyVjxG+0= X-Google-Smtp-Source: ABdhPJwa626CxZJt6X6ejRxk7e3J2MLsFDDgC11k4AQQkijvXAVNZFdD5YlGgxxeK9SEt/5A/DqexW+VRmPulFH2V5w= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:a17:90b:4595:: with SMTP id hd21mr720735pjb.0.1599165107467; Thu, 03 Sep 2020 13:31:47 -0700 (PDT) Date: Thu, 3 Sep 2020 13:30:50 -0700 In-Reply-To: <20200903203053.3411268-1-samitolvanen@google.com> Message-Id: <20200903203053.3411268-26-samitolvanen@google.com> Mime-Version: 1.0 References: <20200624203200.78870-1-samitolvanen@google.com> <20200903203053.3411268-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.526.ge36021eeef-goog Subject: [PATCH v2 25/28] 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 Sender: linux-kbuild-owner@vger.kernel.org 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