From patchwork Thu Jul 27 15:06:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Zhangjin Wu X-Patchwork-Id: 13330272 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 7EBE8C0015E for ; Thu, 27 Jul 2023 15:07:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233337AbjG0PHK (ORCPT ); Thu, 27 Jul 2023 11:07:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52790 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229965AbjG0PHJ (ORCPT ); Thu, 27 Jul 2023 11:07:09 -0400 Received: from bg4.exmail.qq.com (bg4.exmail.qq.com [43.155.65.254]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4C6DE3AB1; Thu, 27 Jul 2023 08:06:53 -0700 (PDT) X-QQ-mid: bizesmtp87t1690470403thpm20hj Received: from linux-lab-host.localdomain ( [61.141.78.189]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 27 Jul 2023 23:06:42 +0800 (CST) X-QQ-SSF: 00200000002000D0X000B00A0000000 X-QQ-FEAT: 3M0okmaRx3grTgKwDU4jisbzGh+NZB7/xNo7K2n7uIroM5MCBcugnNk/fjg7e lQqqPh9SBo2j9DNGY7/7MXuFTe06T2qvVSYMBDAn2ENkrV0kQwdMV6eC5OouGaK6zJDhNEI +WDXje/sDVWhnrPey77Lwqa5xhgbPbrqJt0wqv8ABuqd5xCSh/2YAzGjIv6m5psSufdeLFM EE29nEQzSH0b8yQx4cYaqEk/50MVNrWCfIcv+sNF4E+K7D77ajYyJ9wxfWewJSiFdVRkxcI 3qKxYr8A60XCB4fOIc6rq6SieoZQGb/dppeNFPzjsV1bG04O2CgIZVcMF4vm5yphsrVuNWz zMOB9OQ1uQPYjP8o3DDSi9ytLgZhrJDMb7F6SfkkERr0lazpROqTJC+rWIpOAW/WsVGxmCb Ry4Nx2LKCsQ= X-QQ-GoodBg: 0 X-BIZMAIL-ID: 100620124007279467 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 v3 7/7] selftests/nolibc: add test support for ppc64 Date: Thu, 27 Jul 2023 23:06:38 +0800 Message-Id: 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 Kernel uses ARCH=powerpc for both 32-bit and 64-bit PowerPC, here adds a ppc64 variant for big endian 64-bit PowerPC, users can pass ARCH=ppc64 to test it. The powernv machine of qemu-system-ppc64 is used with powernv_be_defconfig. As the document [1] shows: PowerNV (as Non-Virtualized) is the “bare metal” platform using the OPAL firmware. It runs Linux on IBM and OpenPOWER systems and it can be used as an hypervisor OS, running KVM guests, or simply as a host OS. Notes, - differs from little endian 64-bit PowerPC, vmlinux is used instead of zImage, because big endian zImage [2] only boot on qemu with x-vof=on (added from qemu v7.0) and a fixup patch [3] for qemu v7.0.51: - since the VSX support may be disabled in kernel side, to avoid "illegal instruction" errors due to missing VSX kernel support, let's simply let compiler not generate vector/scalar (VSX) instructions via the '-mno-vsx' option. - as 'man gcc' shows, '-mmultiple' is used to generate code that uses the load multiple word instructions and the store multiple word instructions. Those instructions do not work when the processor is in little-endian mode (except PPC740/PPC750), so, we only enable it for big endian powerpc. [1]: https://qemu.readthedocs.io/en/latest/system/ppc/powernv.html [2]: https://github.com/linuxppc/issues/issues/402 [3]: https://lore.kernel.org/qemu-devel/20220504065536.3534488-1-aik@ozlabs.ru/ Suggested-by: Willy Tarreau Link: https://lore.kernel.org/lkml/20230722121019.GD17311@1wt.eu/ Link: https://lore.kernel.org/lkml/20230719043353.GC5331@1wt.eu/ Reviewed-by: Thomas Weißschuh Signed-off-by: Zhangjin Wu --- tools/testing/selftests/nolibc/Makefile | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile index dfc411cd4f10..2e9694370913 100644 --- a/tools/testing/selftests/nolibc/Makefile +++ b/tools/testing/selftests/nolibc/Makefile @@ -22,6 +22,7 @@ XARCH := $(or $(XARCH_$(ARCH)),$(ARCH)) # ARCH is supported by kernel # map from user input variants to their kernel supported architectures ARCH_ppc = powerpc +ARCH_ppc64 = powerpc ARCH_ppc64le = powerpc override ARCH := $(or $(ARCH_$(XARCH)),$(XARCH)) @@ -33,6 +34,7 @@ IMAGE_arm64 = arch/arm64/boot/Image IMAGE_arm = arch/arm/boot/zImage IMAGE_mips = vmlinuz IMAGE_ppc = vmlinux +IMAGE_ppc64 = vmlinux IMAGE_ppc64le = arch/powerpc/boot/zImage IMAGE_riscv = arch/riscv/boot/Image IMAGE_s390 = arch/s390/boot/bzImage @@ -48,6 +50,7 @@ DEFCONFIG_arm64 = defconfig DEFCONFIG_arm = multi_v7_defconfig DEFCONFIG_mips = malta_defconfig DEFCONFIG_ppc = pmac32_defconfig +DEFCONFIG_ppc64 = powernv_be_defconfig DEFCONFIG_ppc64le = powernv_defconfig DEFCONFIG_riscv = defconfig DEFCONFIG_s390 = defconfig @@ -68,6 +71,7 @@ QEMU_ARCH_arm64 = aarch64 QEMU_ARCH_arm = arm QEMU_ARCH_mips = mipsel # works with malta_defconfig QEMU_ARCH_ppc = ppc +QEMU_ARCH_ppc64 = ppc64 QEMU_ARCH_ppc64le = ppc64le QEMU_ARCH_riscv = riscv64 QEMU_ARCH_s390 = s390x @@ -82,6 +86,7 @@ QEMU_ARGS_arm64 = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC QEMU_ARGS_arm = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" QEMU_ARGS_mips = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" QEMU_ARGS_ppc = -M g3beige -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" +QEMU_ARGS_ppc64 = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" QEMU_ARGS_ppc64le = -M powernv -append "console=hvc0 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=%)" @@ -98,6 +103,7 @@ else Q=@ endif +CFLAGS_ppc64 = -m64 -mbig-endian -Wl,-EB,-melf64ppc -mmultiple -mno-vsx CFLAGS_ppc64le = -m64 -mlittle-endian -Wl,-EL,-melf64ppc -mno-vsx CFLAGS_s390 = -m64 CFLAGS_mips = -EL