From patchwork Wed Jul 26 14:54:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Zhangjin Wu X-Patchwork-Id: 707297 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1EC53C001B0 for ; Wed, 26 Jul 2023 14:54:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234075AbjGZOyu (ORCPT ); Wed, 26 Jul 2023 10:54:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40240 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234024AbjGZOyt (ORCPT ); Wed, 26 Jul 2023 10:54:49 -0400 Received: from bg4.exmail.qq.com (bg4.exmail.qq.com [43.154.54.12]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8F10D2135; Wed, 26 Jul 2023 07:54:45 -0700 (PDT) X-QQ-mid: bizesmtp67t1690383276tza3l49q Received: from linux-lab-host.localdomain ( [61.141.78.189]) by bizesmtp.qq.com (ESMTP) with id ; Wed, 26 Jul 2023 22:54:34 +0800 (CST) X-QQ-SSF: 01200000000000D0X000000A0000000 X-QQ-FEAT: r/cTxDoDoiFjb4JVRsMIgBybvgGHeXlw6CGhAu8N0T0dgbDdPlnhEzj5qjA9U RGODEI2n+1TT4nmIX3JXDAh/Z5olvgc1R5vAdtpGjKPrv4ckIFp3ciD1SXhl8sVkSEA75zM nXA6uJ4mZOYuQgqiQhrwISXcL7SvqvKH93rc7xvehVM1kQA4jEPe/JMduL8gOoO15+tnCuy YT0lx5a3u465mj5R1oz78QjysAdkkwIn1/PCC3x5nHK5wKVL76lSai4M9WxQcxfxHeHEm4j 4eiCoeNzvQIX+FqBJiLoFB2bthvw0UAf7ZeLLj6s1GFT1mKLud6P3dLdbXIVTIe/10n6fF+ Z3Q7mbKNdvYhXT56sEwKXo1ydqP20Q6TXk8m0bSJt3/BBFSHTDLroEdklq3mELFUS6w0XYG leSO6sakNHw= X-QQ-GoodBg: 0 X-BIZMAIL-ID: 7571784619353913893 From: Zhangjin Wu To: w@1wt.eu Cc: falcon@tinylab.org, arnd@arndb.de, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, thomas@t-8ch.de, =?utf-8?q?Thomas_Wei?= =?utf-8?q?=C3=9Fschuh?= Subject: [PATCH v2 4/7] selftests/nolibc: add XARCH and ARCH mapping support Date: Wed, 26 Jul 2023 22:54:23 +0800 Message-Id: <4260bf6df7417ba5395e7a1f71609690bbd11b17.1690373704.git.falcon@tinylab.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:tinylab.org:qybglogicsvrgz:qybglogicsvrgz5a-1 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Most of the CPU architectures have different variants, but kernel usually only accept parts of them via the ARCH variable, the others should be customized via kernel config file. To simplify testing, the external ARCH variable is extended to accept more CPU variants from user's input, a new internal XARCH variable is added to save users' ARCH input and used to customize variant specific variables, at last convert XARCH to the internal ARCH variable acceptable by kernel: e.g. make run-user ARCH= | v external ARCH from cmdline -> internal XARCH -> internal ARCH for kernel | `--> variant specific variables XARCH and ARCH are carefully mapped to allow users to pass architecture variants via external ARCH (or XARCH) from cmdline: - From developers' perspective - XARCH records the architecture variant from user's ARCH input, after 'override ARCH', ARCH is overridden by the one supported by kernel - Map from XARCH to the kernel supported ARCH: 'ARCH_ = ' - Configure a default variant for kernel supported ARCH: 'XARCH_ = ' - From users' perspective - ARCH (or XARCH) are architecture variants of a target architecture - the variants are XARCH names from the "ARCH_ = " mapping list Suggested-by: Willy Tarreau Link: https://lore.kernel.org/lkml/20230702171715.GD16233@1wt.eu/ Reviewed-by: Thomas Weißschuh Signed-off-by: Zhangjin Wu --- tools/testing/selftests/nolibc/Makefile | 27 ++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile index 9576f1a0a98d..f04ec1cc132b 100644 --- a/tools/testing/selftests/nolibc/Makefile +++ b/tools/testing/selftests/nolibc/Makefile @@ -14,6 +14,14 @@ include $(srctree)/scripts/subarch.include ARCH = $(SUBARCH) endif +# XARCH is used to save user-input ARCH variant +# allow configure default variant for target ARCH +XARCH := $(or $(XARCH_$(ARCH)),$(ARCH)) + +# ARCH is supported by kernel +# map from user-input variant to kernel-supported +override ARCH := $(or $(ARCH_$(XARCH)),$(XARCH)) + # kernel image names by architecture IMAGE_i386 = arch/x86/boot/bzImage IMAGE_x86_64 = arch/x86/boot/bzImage @@ -24,7 +32,7 @@ IMAGE_mips = vmlinuz IMAGE_riscv = arch/riscv/boot/Image IMAGE_s390 = arch/s390/boot/bzImage IMAGE_loongarch = arch/loongarch/boot/vmlinuz.efi -IMAGE = $(IMAGE_$(ARCH)) +IMAGE = $(IMAGE_$(XARCH)) IMAGE_NAME = $(notdir $(IMAGE)) # default kernel configurations that appear to be usable @@ -37,10 +45,10 @@ DEFCONFIG_mips = malta_defconfig DEFCONFIG_riscv = defconfig DEFCONFIG_s390 = defconfig DEFCONFIG_loongarch = defconfig -DEFCONFIG = $(DEFCONFIG_$(ARCH)) +DEFCONFIG = $(DEFCONFIG_$(XARCH)) # extra kernel config files under configs/, include common + architecture specific -EXTCONFIG = common.config $(ARCH).config +EXTCONFIG = common.config $(XARCH).config # optional tests to run (default = all) TEST = @@ -55,7 +63,7 @@ QEMU_ARCH_mips = mipsel # works with malta_defconfig QEMU_ARCH_riscv = riscv64 QEMU_ARCH_s390 = s390x QEMU_ARCH_loongarch = loongarch64 -QEMU_ARCH = $(QEMU_ARCH_$(ARCH)) +QEMU_ARCH = $(QEMU_ARCH_$(XARCH)) # QEMU_ARGS : some arch-specific args to pass to qemu QEMU_ARGS_i386 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" @@ -67,7 +75,7 @@ QEMU_ARGS_mips = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" QEMU_ARGS_riscv = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" QEMU_ARGS_s390 = -M s390-ccw-virtio -m 1G -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" QEMU_ARGS_loongarch = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" -QEMU_ARGS = $(QEMU_ARGS_$(ARCH)) $(QEMU_ARGS_EXTRA) +QEMU_ARGS = $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_EXTRA) # OUTPUT is only set when run from the main makefile, otherwise # it defaults to this nolibc directory. @@ -84,7 +92,7 @@ CFLAGS_mips = -EL CFLAGS_STACKPROTECTOR ?= $(call cc-option,-mstack-protector-guard=global $(call cc-option,-fstack-protector-all)) CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 \ $(call cc-option,-fno-stack-protector) \ - $(CFLAGS_$(ARCH)) $(CFLAGS_STACKPROTECTOR) + $(CFLAGS_$(XARCH)) $(CFLAGS_STACKPROTECTOR) LDFLAGS := -s REPORT ?= awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$/{if (!f) printf("\n"); f++; print;} /\[SKIPPED\][\r]*$$/{s++} \ @@ -102,7 +110,7 @@ help: @echo " run-user runs the executable under QEMU (uses \$$ARCH, \$$TEST)" @echo " initramfs prepare the initramfs with nolibc-test" @echo " defconfig create a fresh new default config (uses \$$ARCH)" - @echo " kernel (re)build the kernel with the initramfs (uses \$$ARCH)" + @echo " kernel (re)build the kernel with the initramfs (uses $$ARCH)" @echo " run runs the kernel in QEMU after building it (uses \$$ARCH, \$$TEST)" @echo " rerun runs a previously prebuilt kernel in QEMU (uses \$$ARCH, \$$TEST)" @echo " clean clean the sysroot, initramfs, build and output files" @@ -111,12 +119,13 @@ help: @echo "" @echo "Currently using the following variables:" @echo " ARCH = $(ARCH)" + @echo " XARCH = $(XARCH)" @echo " CROSS_COMPILE = $(CROSS_COMPILE)" @echo " CC = $(CC)" @echo " OUTPUT = $(OUTPUT)" @echo " TEST = $(TEST)" - @echo " QEMU_ARCH = $(if $(QEMU_ARCH),$(QEMU_ARCH),UNKNOWN_ARCH) [determined from \$$ARCH]" - @echo " IMAGE_NAME = $(if $(IMAGE_NAME),$(IMAGE_NAME),UNKNOWN_ARCH) [determined from \$$ARCH]" + @echo " QEMU_ARCH = $(if $(QEMU_ARCH),$(QEMU_ARCH),UNKNOWN_ARCH) [determined from \$$XARCH]" + @echo " IMAGE_NAME = $(if $(IMAGE_NAME),$(IMAGE_NAME),UNKNOWN_ARCH) [determined from \$$XARCH]" @echo "" all: run