From nobody Mon Oct 6 15:14:19 2025 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 001C3287511; Sat, 19 Jul 2025 15:38:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752939537; cv=none; b=Cp2PXB+sNGYHNzjqwXVMUnQkI0UhBJHuCAwT17tr85PGkrK3aHBR2f06tJmZpPEUVwRdgeaUexm37nntJMsWc7PDQ0N8moA1kIALOlBwLzPqhGBemcjH89fEKYgr30xWFHrYymd0nZvzP4oDYVv7P0VgJvAhFFan07HNomBHAlk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752939537; c=relaxed/simple; bh=UB84zosAyDKdcLtvdROGzQ359daOZJuFvZJIgYYE7IM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=r1pytlZxDGhxWOmFIvRPlkMwabvgLvD9nmzzjOb6QtHnkjv4ixEC+aiKVU0irQCoh056tmZUCwv0iMvSb7N1WDv/ZpiT+Dy/oKQ51lEV8yz71cn3bcGG3/Hk+i+OpS7UJOVFtqtyaVz6pGb+aDJU0kxUIPgFQGfykHwGqEQ/HpM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=cTZQ/mx2; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="cTZQ/mx2" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1752939526; bh=UB84zosAyDKdcLtvdROGzQ359daOZJuFvZJIgYYE7IM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=cTZQ/mx2fe6WEvv41Wz5OfpFtMkC4+vWrWUzUHaxHdW8zsu1pHkqNrRPra2fBmTsL A6B9wUfWI0as32Vcu4i7P7b5R8x/p8/kRgJXDFXmCv6TjpSbuFfGQCWqYfAefwUUiF fhxOJHs+XygTJoL+Q/+j36avORNkpuRBWtYYOi7g= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Sat, 19 Jul 2025 17:38:27 +0200 Subject: [PATCH 1/3] selftests/nolibc: deduplicate invocations of toplevel Makefile Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250719-nolibc-llvm-system-v1-1-1730216ce171@weissschuh.net> References: <20250719-nolibc-llvm-system-v1-0-1730216ce171@weissschuh.net> In-Reply-To: <20250719-nolibc-llvm-system-v1-0-1730216ce171@weissschuh.net> To: Willy Tarreau , Shuah Khan , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1752939526; l=2285; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=UB84zosAyDKdcLtvdROGzQ359daOZJuFvZJIgYYE7IM=; b=s1ncXgxXKcQ2XRNo+TAW9o5Gh0zOt+iFEhttUlxtPpjxcvbA1svL3jofds50VIjpUZ3+0fHVk V48BM4+abGmB+HgXus+hNWC0UaM9gXhpmgjVnd6Q3cuHQ+uyWn33oum X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= Various targets of the testsuite call back into the toplevel kernel Makefile. These calls use various parameters and are quite long. Introduce a common variable to make future changes smaller and the lines shorter. Signed-off-by: Thomas Wei=C3=9Fschuh --- tools/testing/selftests/nolibc/Makefile.nolibc | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/nolibc/Makefile.nolibc b/tools/testing= /selftests/nolibc/Makefile.nolibc index 0fb759ba992ee6b1693b88f1b2e77463afa9f38b..8e7a832ba3f6da3ca0d669b941a= cd1cf79813a8d 100644 --- a/tools/testing/selftests/nolibc/Makefile.nolibc +++ b/tools/testing/selftests/nolibc/Makefile.nolibc @@ -262,6 +262,9 @@ REPORT ?=3D awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$= /{if (!f) printf("\n"); f++ if (f || !p || !done) printf("failure\n"); else if (s) printf("warning\n= "); else printf("success\n");; \ printf("\nSee all results in %s\n", ARGV[1]); }' =20 +# Execute the toplevel kernel Makefile +KBUILD_MAKE =3D $(MAKE) -C $(srctree) ARCH=3D$(ARCH) CC=3D$(CC) CROSS_COMP= ILE=3D$(CROSS_COMPILE) + help: @echo "Supported targets under selftests/nolibc:" @echo " all call the \"run\" target below" @@ -340,17 +343,17 @@ initramfs: nolibc-test $(Q)cp nolibc-test initramfs/init =20 defconfig: - $(Q)$(MAKE) -C $(srctree) ARCH=3D$(ARCH) CC=3D$(CC) CROSS_COMPILE=3D$(CRO= SS_COMPILE) $(DEFCONFIG) + $(Q)$(KBUILD_MAKE) $(DEFCONFIG) $(Q)if [ -n "$(EXTRACONFIG)" ]; then \ $(srctree)/scripts/config --file $(objtree)/.config $(EXTRACONFIG); \ - $(MAKE) -C $(srctree) ARCH=3D$(ARCH) CC=3D$(CC) CROSS_COMPILE=3D$(CROSS_= COMPILE) olddefconfig < /dev/null; \ + $(KBUILD_MAKE) olddefconfig < /dev/null; \ fi =20 kernel: - $(Q)$(MAKE) -C $(srctree) ARCH=3D$(ARCH) CC=3D$(CC) CROSS_COMPILE=3D$(CRO= SS_COMPILE) $(IMAGE_NAME) < /dev/null + $(Q)$(KBUILD_MAKE) $(IMAGE_NAME) < /dev/null =20 kernel-standalone: initramfs - $(Q)$(MAKE) -C $(srctree) ARCH=3D$(ARCH) CC=3D$(CC) CROSS_COMPILE=3D$(CRO= SS_COMPILE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=3D$(CURDIR)/initramfs < /= dev/null + $(Q)$(KBUILD_MAKE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=3D$(CURDIR)/init= ramfs < /dev/null =20 # run the tests after building the kernel run: kernel initramfs.cpio --=20 2.50.1 From nobody Mon Oct 6 15:14:19 2025 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 5DAAA2877EC; 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arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="M1+62AlU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1752939527; bh=6wjbJvAYhEr+Q1+vLoPhEwso9NtlBvkp222xuQek8xw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=M1+62AlUVMHzsQAg5cua9oKCMr1AhHz74iICiEjpiKvrJVHZiIlMJs7KRInwe0Y2T JSCzRuZ1Sd+yoXN6I0lNmvDYEZ7nu5tUScuPdQuJBQNkpm9fKeKhfGhMR3F32Fjg4d glEykmbjwcbirjJIMfD2b0BEg/SEz8RB36k+Fims= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Sat, 19 Jul 2025 17:38:28 +0200 Subject: [PATCH 2/3] selftests/nolibc: don't pass CC to toplevel Makefile Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250719-nolibc-llvm-system-v1-2-1730216ce171@weissschuh.net> References: <20250719-nolibc-llvm-system-v1-0-1730216ce171@weissschuh.net> In-Reply-To: <20250719-nolibc-llvm-system-v1-0-1730216ce171@weissschuh.net> To: Willy Tarreau , Shuah Khan , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1752939526; l=1063; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=6wjbJvAYhEr+Q1+vLoPhEwso9NtlBvkp222xuQek8xw=; b=iUmJdpPOCf9XJXCDnMPP0afmk0OVui6krQ1l7h7VmBNCQhuE3u+zTs1+anixDzdq9JoETg0A4 VSuL2Xl7N9eBlmSHSVtn6DF2gQIXoKmLKKFPpEdRECm0xm8hTIPSFjo X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= The toplevel Makefile is capable of calculating CC from CROSS_COMPILE and/or ARCH. Stop passing the unnecessary variable. Signed-off-by: Thomas Wei=C3=9Fschuh --- tools/testing/selftests/nolibc/Makefile.nolibc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/nolibc/Makefile.nolibc b/tools/testing= /selftests/nolibc/Makefile.nolibc index 8e7a832ba3f6da3ca0d669b941acd1cf79813a8d..6e6dddaa2e3ed56886cd76c4232= 97648d13027c7 100644 --- a/tools/testing/selftests/nolibc/Makefile.nolibc +++ b/tools/testing/selftests/nolibc/Makefile.nolibc @@ -263,7 +263,7 @@ REPORT ?=3D awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$= /{if (!f) printf("\n"); f++ printf("\nSee all results in %s\n", ARGV[1]); }' =20 # Execute the toplevel kernel Makefile -KBUILD_MAKE =3D $(MAKE) -C $(srctree) ARCH=3D$(ARCH) CC=3D$(CC) CROSS_COMP= ILE=3D$(CROSS_COMPILE) +KBUILD_MAKE =3D $(MAKE) -C $(srctree) ARCH=3D$(ARCH) CROSS_COMPILE=3D$(CRO= SS_COMPILE) =20 help: @echo "Supported targets under selftests/nolibc:" --=20 2.50.1 From nobody Mon Oct 6 15:14:19 2025 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 5DB7F2877EE; Sat, 19 Jul 2025 15:38:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752939537; cv=none; b=pyk3YaWY0Bcp+IKJoJxGhNhD36FX5WEQdHDfDDElNPbL2O7zes4HGvBDpPifiTTy9N5JIjnND66khBI3//h0mQiKNQ+/O6XcFi+DcQrMO1kQE+vqqSJPrMcHXOTitsv1ME7c9SoURTXwvtJlSFq2YGFnu41f3OM3KRBt/ZwK28A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752939537; c=relaxed/simple; bh=51GkrVrQpjPfvvJr3LapBWVH8+FIFYkaT062gxrS96I=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=vBmbnSi1KX5eQJDnqP7w23oOjYDXV/9OX20tzzMLPSSj3OYCQ2yERVGg19v1cUi0LSc5mER77ezSuhadBST3/4h+XNPdsfKzFlflHiqso5XuVaA3KM5DtKXXGQr9tO7HoK2ag+CuOP2SDfW00/brqzKdzr60kD4DgxE7iy8yPaI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=WVtI9GZY; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="WVtI9GZY" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1752939526; bh=51GkrVrQpjPfvvJr3LapBWVH8+FIFYkaT062gxrS96I=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=WVtI9GZYhsNpCZV/Cgg8eE7tgSuYjabUaW6lyLIS/v92QbaJFV/2FNnvHDrYwVkcG yioU/3HcMnzGsIlaxW40bBR30+/9sb1nICi21tzsXtVhqxEns2advXeQ/9zQHxUgEN OFkdfjRGZDztG3XLAgZsqrV9B04a2ZuC/j/q0VFQ= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Sat, 19 Jul 2025 17:38:29 +0200 Subject: [PATCH 3/3] selftests/nolibc: always compile the kernel with GCC Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250719-nolibc-llvm-system-v1-3-1730216ce171@weissschuh.net> References: <20250719-nolibc-llvm-system-v1-0-1730216ce171@weissschuh.net> In-Reply-To: <20250719-nolibc-llvm-system-v1-0-1730216ce171@weissschuh.net> To: Willy Tarreau , Shuah Khan , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1752939526; l=1288; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=51GkrVrQpjPfvvJr3LapBWVH8+FIFYkaT062gxrS96I=; b=BRqqIxDJNQdSvuWhzuAvv++iXFFsb1KwrMKiT8bWI8nXvZwVhxwcGPJOIn8Ry8DkCynnALEcu rwqRwA6kxhDBHkv+uuQnvLcytH6hZ3eskUoIYw4adK3VZ0jFevyjRNi X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= LLVM/clang can not build the kernel for all architectures supported by nolibc. The current setup uses the same compiler to build the kernel as is used for nolibc-test. This prevents using the full qemu-system tests for LLVM builds. Instead always build the kernel with GCC. For the nolibc testsuite the kernel does not need to be built with LLVM. Signed-off-by: Thomas Wei=C3=9Fschuh --- tools/testing/selftests/nolibc/Makefile.nolibc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/nolibc/Makefile.nolibc b/tools/testing= /selftests/nolibc/Makefile.nolibc index 6e6dddaa2e3ed56886cd76c423297648d13027c7..3d8e314c2433a2d032cf4f58ea1= d6a2f430faaae 100644 --- a/tools/testing/selftests/nolibc/Makefile.nolibc +++ b/tools/testing/selftests/nolibc/Makefile.nolibc @@ -263,7 +263,7 @@ REPORT ?=3D awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$= /{if (!f) printf("\n"); f++ printf("\nSee all results in %s\n", ARGV[1]); }' =20 # Execute the toplevel kernel Makefile -KBUILD_MAKE =3D $(MAKE) -C $(srctree) ARCH=3D$(ARCH) CROSS_COMPILE=3D$(CRO= SS_COMPILE) +KBUILD_MAKE =3D $(MAKE) -C $(srctree) ARCH=3D$(ARCH) CROSS_COMPILE=3D$(CRO= SS_COMPILE) LLVM=3D =20 help: @echo "Supported targets under selftests/nolibc:" --=20 2.50.1