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=1793188888; b=fxMQ3cKN+UxT5plTzUUrAxFpyw5WswU9HJbxTPlHRAuy5pbE8aFfIxBHRlY3vXKNUszj z5D1s/IsYuRA3Q+nd8Bu+E83y44YyNmz6cR9hlvdO2lqUCz0tpriLSRkMpPdtYEDi07PN JtmrFv7a8ELQ6C45zY4bDaM/nTMWgYQcaa9xXD/VNoMXXPA8WoUzKcoFdTn2SFi48oE7K CoGjmGZhzGSPXI+w01uKWR+D6UosFz6KVRAKDykHDlLfSnrJrbTr10cEFBJ4epSqyZGQ9 Rr8y9PblE0fXmfLAVOAfpXxZqCeyhjOaGFZ4Csu80/qBK9BvhDKZpD7SA9ipgvpkEHA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793188888; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=L3bcO8YRRsgPSNJNkjw9aJlZUyGvdCG/w/uLRTpwFe8=; b=0vkhF5THKgLy3YGzOchHcbXK/gc3DofPgGX/nnh/W/FpScXMQXqh8uq+P/UxJFTbpJ6B d7nRhnxO6J5YSimV5VZ7H4VlIiBqWuOT8GXGAm913baR2doNxrT3D6uj3X1jQhyst/Jrj +etkB6OGz/Fm3lQZGJZSePXQQDNoR0WwSWsp4ihaEJhe+WHnSCP8+javDAR45SCkXKs0N 6Y/YSdMNOh/aLgXyLIeBuqqVN28FtN3J+Gdn4r+dLAftNQi4RO8q5Hz4pyfwsdMbqOmO9 wncNm8DNDtn/wexCPOCgOpAm0kPjEuI1Ko5ZFjtf2O2KHDkAivNS4SZKStWEmXMisOw== 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=TtD1xeR4; 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 60562606A32A; Wed, 28 Oct 2026 12:01:23 +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=TtD1xeR4 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B48C1F031E1; Wed, 28 Oct 2026 12:01:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793188883; bh=L3bcO8YRRsgPSNJNkjw9aJlZUyGvdCG/w/uLRTpwFe8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=TtD1xeR45adtBFPdpzWuX2HqO8tSqDHgmNuX7J36Wk9mbidlitaswFQW6UXqTxR7V gkBU0MgDyEKzfk/JjNRFnYmi77QcZ9VK9KnYORQCP4t0RmGUaXtwFnMQqYtXaf/TWY qaASSP857DuNEPL8tC7rFWMCIDlH39pKhfdj8S9tlpFpHqxVlCYN63Nvj+1ohkhKJH 8qCLvQKP47i5YMuw9svSk0hNLJYVptpCXCwfysWuPlxJeG6zwEUUeWvDqTUdcNqF0j cGzytxXXFkp03CfbVHaSrcS9RhyuIDZDMo5zxZIAu9VwPDGNbKvnlS3sQ8/HTnJzUW lotVg2TL8VWcw== 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: [RFC PATCH 15/20] x86: Enable Clang's source-based code coverage Date: Wed, 28 Oct 2026 07:59:39 -0400 Message-ID: <20261028120034.871983-16-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261028120034.871983-1-sashal@kernel.org> References: <20261028120034.871983-1-sashal@kernel.org> X-Mailing-List: llvm@lists.linux.dev 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 a5e29ffd5ddc3..0c26d61350553 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