From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793670792; b=R2MfnHLuc6PZB4pxkmMyD4TDxxaiTkrPz9qFVuHTEjOf/VWCCOTs3O2y4c0uT54kWuIp rMgdUPptGJ5MCrCUb08lgo6BDpv8ebmqc2J3cwwg7FiZMp4DL5Tea0xEJvNO3GIizIETE 4y+JkGcuvalUJWm+cREOBT33YtMr0XGcbms952zbIGME4QhdE5nagAmuYqOFK+0NjpkPB JZiyTkAvboh0AP2uHWECl4mjJ0dzGDD+vpFGrKy2o5XMK1plFJK5ik9ngU8bHSnhwBslS wDUFtQjjW/UfrdImYy7okxPIphANn9rhcbZLJZg2AbAaZmDFd2ojj7JmTKH8OXd+jRg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793670792; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=Cfhcu7V7NlWHhSeuNE5qSXQk4BaHgts0jmefgeiMHVg=; b=f+a/s6oWNW7RridcnvqQX0/jQAXZBFPcj2bGz5p6EnXj92gBglHKnLbpHOxSSTcOrs+1 vzWMckXp0HZ8WOffpF2NkC3zoRNIKYLtGk/C6aCnTxRDfmqV6if2Eefqxh/AwpJHqsvkl 5w8TnsDnKTIHPbfgbE95vaa4GZ/H0xSBWgKverks0tvYb1Q6YCQpgdn/Q4RBY/UP+U4rb 8mTIKvaI16ZxOkpM9PcuWn5QLP/FgUvV3QOUHX1dFIfDcv/QelZnRMDixKDJTZcgdeLct luXXw/gngdD8Lmck5diHjQWYR+aRdS4XCMcUnIaMwHx4vdXjoqV0RUvhF+8vstRe15g== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=AY3HuobY; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1FEA6606EE99; Tue, 3 Nov 2026 01:53:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=AY3HuobY Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5CF521F00A1B; Tue, 3 Nov 2026 01:53:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793670792; bh=Cfhcu7V7NlWHhSeuNE5qSXQk4BaHgts0jmefgeiMHVg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=AY3HuobYJnYJ8J5BKWRvjs/iIVN7Iwqu+E8K511eiIhEdOZ2IKbW3RmWnVgD2jWds zavmGUKGGG9LgI2aM0fuO1IkjkwuiHdNy17t/aYv8uaPyxIGg3zHtZc+LX5GsQcoMe /jgrW3dwG5ZBdrAMyGlmUMYfVHClO6DmpEbxHV6F2PwFwlrlU8wyHmXw30aA726tkF UVo0erOWO++BZ6nXAGtbA/LLoG6IKaPL3R5YyDRNcaqN0+QS01JLJOiIiBIRCsP+zv 6L+iIjAb/zQObphdN8SO5CqGio0EKEsL5pZE0cClHcPJR6pkF29c3nVqF33uUh0EW6 pkUlUHT4Rq7RQ== From: Sasha Levin To: linux-kernel@vger.kernel.org Cc: Wentao Zhang , Bill Wendling , Borislav Petkov , Chuck Wolber , Dave Hansen , "H. Peter Anvin" , Ingo Molnar , Justin Stitt , llvm@lists.linux.dev, Marco Elver , Masami Hiramatsu , Nathan Chancellor , Nick Desaulniers , Peter Zijlstra , Thomas Gleixner , x86@kernel.org Subject: [PATCH v2 15/20] x86: Enable Clang's source-based code coverage Date: Mon, 2 Nov 2026 20:52:33 -0500 Message-ID: <20261103015238.3780910-16-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261103015238.3780910-1-sashal@kernel.org> References: <20261103015238.3780910-1-sashal@kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Place the sections of Clang's source-based code coverage in the x86 linker script and allow it to be used, including for the entire kernel, on x86_64. Originally-by: Wentao Zhang Signed-off-by: Sasha Levin --- arch/x86/Kconfig | 2 ++ arch/x86/kernel/vmlinux.lds.S | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 58dce0b66179b..988add4916411 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -89,6 +89,8 @@ config X86 select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_KCOV if X86_64 + select ARCH_HAS_LLVM_COV if X86_64 + select ARCH_HAS_LLVM_COV_PROFILE_ALL if X86_64 select ARCH_HAS_KERNEL_FPU_SUPPORT select ARCH_HAS_MEM_ENCRYPT select ARCH_HAS_MEMBARRIER_SYNC_CORE diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 2438b89a4620a..98f41b943fe63 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -212,6 +212,8 @@ SECTIONS BUG_TABLE + LLVM_COV_DATA + ORC_UNWIND_TABLE /* Init code and data - will be freed after init */ -- 2.53.0