From patchwork Fri Sep 18 20:14:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sami Tolvanen X-Patchwork-Id: 11786053 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 4EABD112E for ; Fri, 18 Sep 2020 20:15:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 25EF4238EE for ; Fri, 18 Sep 2020 20:15:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="ObhRsoWs" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726662AbgIRUPk (ORCPT ); Fri, 18 Sep 2020 16:15:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52986 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726664AbgIRUPj (ORCPT ); Fri, 18 Sep 2020 16:15:39 -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 74A00C0613CF for ; Fri, 18 Sep 2020 13:15:37 -0700 (PDT) Received: by mail-qk1-x74a.google.com with SMTP id q131so5539062qke.22 for ; Fri, 18 Sep 2020 13:15:37 -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=/0ldiyB2nVfkSW+Z4ZqugZ1I2eeQ0sdYMfFHH6J6dWM=; b=ObhRsoWs56/ckOGNxhhvSliY51cEtV0g/uMSUnztF/O7z31SMtCH/329m8ibTSKZpG fiez3GHcBYfc9o5RBx52gPxMzE2kT7BpfP1ZD4q5GKOuEItaIBhl8DMnx+NNI8ef7ycs b8R96aDxgD2UiGsnLon+7daf2qTD2JY7NXxEElaPkmsOHkoKvbT8QFHFiJaUXRtTLxH0 55yHN4z3tf4xECFWt3X9nwCecG7xNYuYAMLaw4tETvqQQGxC0C2DOdr9nz2poaLSjtvv 1tZdTBVYTcwfiT3/yI4GgTADGX+HKVoqImsQX1FHpwsSfHwO0fR0fgmBvCx0ByfTr/Ho 8lWw== 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=/0ldiyB2nVfkSW+Z4ZqugZ1I2eeQ0sdYMfFHH6J6dWM=; b=ViYDpWlK/kWQxmWRBNK7jbo1A5tXBf1Ndqb9GWwMH2npr16HBKQ4MUBEceb4ccElcT hsH2Bl4WWzUdlewDXCBmGM6dZw3mo1xmyza9Eefae/QpoeLxJi5+kjlWm050VPSRfNNL B9vjvq0bk0U36aFN5oxkLrj5a8RWKNAzjQ/a1Jcqi99CWM60lEGVHG5jd+XHxUepRJ4r K4NCj6aZsxNRZ1+Y+2hvJpHqdcEdevcKQGdUMGQ1opdKdGUpa5fv66LPwMLNqzxXPrj9 ZJCBxmLro0aQWRcvoArV5UlrtO13W2a6Q8oUmKd/bIsRcMZxLR3DMJ2auQd6cfr5c0Eo y87g== X-Gm-Message-State: AOAM533X4KY7/St8PRWOKTEgcYRSb7wLn89OQWWSXcahGrpCf+13ze1J xwl2mQJazm8GdZykLC4vLeQ+AfiAnSrA3T61yFQ= X-Google-Smtp-Source: ABdhPJzlCcwfWl9pGOxTGz2mpuA0ZcI0OzyXT/6tCo4MOeFDLBSH0AjygGOTnITZPst0myY84qe7t61m7gd1U0GYQLc= 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:8b02:: with SMTP id q2mr19161266qva.48.1600460136604; Fri, 18 Sep 2020 13:15:36 -0700 (PDT) Date: Fri, 18 Sep 2020 13:14:30 -0700 In-Reply-To: <20200918201436.2932360-1-samitolvanen@google.com> Message-Id: <20200918201436.2932360-25-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 24/30] arm64: export CC_USING_PATCHABLE_FUNCTION_ENTRY 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 Since arm64 does not use -pg in CC_FLAGS_FTRACE with DYNAMIC_FTRACE_WITH_REGS, skip running recordmcount by exporting CC_USING_PATCHABLE_FUNCTION_ENTRY. Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook --- arch/arm64/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 4e8bb73359c8..57b875099b17 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -123,6 +123,7 @@ CHECKFLAGS += -D__aarch64__ ifeq ($(CONFIG_DYNAMIC_FTRACE_WITH_REGS),y) KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY CC_FLAGS_FTRACE := -fpatchable-function-entry=2 + export CC_USING_PATCHABLE_FUNCTION_ENTRY := 1 endif # Default value