From nobody Mon Feb 9 05:53:12 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 16017320B for ; Sat, 30 Mar 2024 06:06:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711778764; cv=none; b=TukdR3O3WZ3AVZuF0Y3JLegdxCn1ueZ4MT/2G5nIg57ldtU0WEgkCpgtte4Hkau2JmNiVq8cYKTKQGO1vp8aihzClAYGCePm0hXkRLwbAkZVs0VF/OD60dxrHGGJ7LIpZNUVfRIeQm7sBK7SR5MnIjKQ6uB3meYgt9439H6x/7A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711778764; c=relaxed/simple; bh=SWfX/RbvaJ6uB9jNBeoemQtYuqtBDiacIgkpF7oebdg=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=ZaBtkN8gozh8m/xHg1KP5UDBzEI+ZFEAc2HBREWtVIGJPE8GN8uIEo3/Z+NxVFf9qbhmr8cKWm5q/a3dnw44RIJXSdYvqUNp3/AmtZVAWdFhWXdR4bDktleLsaYL2DYAzyDi565sYmg5lOZJzq66rXo0yphHepFYDdfoLE9iquc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Bl0RZ7So; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Bl0RZ7So" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 927EFC433C7; Sat, 30 Mar 2024 06:06:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711778763; bh=SWfX/RbvaJ6uB9jNBeoemQtYuqtBDiacIgkpF7oebdg=; h=From:To:Cc:Subject:Date:From; b=Bl0RZ7Sosh1AqQqFHnODsXMr1GJizm4FGuM7uPs1p8Fa5fnqnBj1HS/FYjggHTY0v mkgs0XBQPOCxIeJwTKqbhZr0RXbrF3y3/Y+ArG0zJqAPH39OR5K+fQAtBXv/P0QK5m 1bf458+I38BgMn3k2KFjFAWk67Xz5LcjTiRCuTAttpA9QPH5Rp4TxRbfqtOIDSgJRw /7p8dp5QCBfzgGLIj7d7gO/Xa7XwIleHfoEsj0D/+jVzgm3rR7ay6FgAuxyC/I6T3z cLlf31wAe7KytixpaKh28EYi05O5vPUf64HDwMjZBaJyrpC0PaFDdr1y80YO5FsEJw ZvtCjJLDdXkLw== From: Masahiro Yamada To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org Cc: Masahiro Yamada , "H. Peter Anvin" , linux-kernel@vger.kernel.org Subject: [PATCH] x86/virt: use obj-y to descend into arch/x86/virt/ Date: Sat, 30 Mar 2024 15:05:54 +0900 Message-Id: <20240330060554.18524-1-masahiroy@kernel.org> X-Mailer: git-send-email 2.40.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Commit c33621b4c5ad ("x86/virt/tdx: Wire up basic SEAMCALL functions") introduced a new instance of core-y instead of the standardized obj-y syntax. X86 Makefiles descend into subdirectories of arch/x86/virt inconsistently; into arch/x86/virt/ via core-y defined in arch/x86/Makefile, but into arch/x86/virt/svm/ via obj-y defined in arch/x86/Kbuild. This is problematic when you build a single object in parallel because multiple threads attempt to build the same file. $ make -j$(nproc) arch/x86/virt/vmx/tdx/seamcall.o [ snip ] AS arch/x86/virt/vmx/tdx/seamcall.o AS arch/x86/virt/vmx/tdx/seamcall.o fixdep: error opening file: arch/x86/virt/vmx/tdx/.seamcall.o.d: No such = file or directory make[4]: *** [scripts/Makefile.build:362: arch/x86/virt/vmx/tdx/seamcall.= o] Error 2 Use the obj-y syntax, as it works correctly. Signed-off-by: Masahiro Yamada --- arch/x86/Kbuild | 2 +- arch/x86/Makefile | 2 -- arch/x86/virt/Makefile | 2 +- 3 files changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/x86/Kbuild b/arch/x86/Kbuild index 6a1f36df6a18..cf0ad89f5639 100644 --- a/arch/x86/Kbuild +++ b/arch/x86/Kbuild @@ -28,7 +28,7 @@ obj-y +=3D net/ =20 obj-$(CONFIG_KEXEC_FILE) +=3D purgatory/ =20 -obj-y +=3D virt/svm/ +obj-y +=3D virt/ =20 # for cleaning subdir- +=3D boot tools diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 662d9d4033e6..5ab93fcdd691 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -251,8 +251,6 @@ archheaders: =20 libs-y +=3D arch/x86/lib/ =20 -core-y +=3D arch/x86/virt/ - # drivers-y are linked after core-y drivers-$(CONFIG_MATH_EMULATION) +=3D arch/x86/math-emu/ drivers-$(CONFIG_PCI) +=3D arch/x86/pci/ diff --git a/arch/x86/virt/Makefile b/arch/x86/virt/Makefile index 1e36502cd738..ea343fc392dc 100644 --- a/arch/x86/virt/Makefile +++ b/arch/x86/virt/Makefile @@ -1,2 +1,2 @@ # SPDX-License-Identifier: GPL-2.0-only -obj-y +=3D vmx/ +obj-y +=3D svm/ vmx/ --=20 2.40.1