From 31284f703db2f1605b2dbc6bb0632b04d7be13e7 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Thu, 2 Dec 2021 00:41:53 +1000 Subject: [PATCH] powerpc/microwatt: add POWER9_CPU, clear PPC_64S_HASH_MMU Microwatt implements a subset of ISA v3.0 (which is equivalent to the POWER9_CPU option). It is radix-only, so does not require hash MMU support. This saves 20kB compressed dtbImage and 56kB vmlinux size. Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20211201144153.2456614-19-npiggin@gmail.com --- arch/powerpc/configs/microwatt_defconfig | 3 ++- arch/powerpc/platforms/microwatt/Kconfig | 1 - 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/configs/microwatt_defconfig b/arch/powerpc/configs/microwatt_defconfig index 07d87a4044b21..eff933ebbb9ec 100644 --- a/arch/powerpc/configs/microwatt_defconfig +++ b/arch/powerpc/configs/microwatt_defconfig @@ -15,6 +15,8 @@ CONFIG_EMBEDDED=y # CONFIG_COMPAT_BRK is not set # CONFIG_SLAB_MERGE_DEFAULT is not set CONFIG_PPC64=y +CONFIG_POWER9_CPU=y +# CONFIG_PPC_64S_HASH_MMU is not set # CONFIG_PPC_KUEP is not set # CONFIG_PPC_KUAP is not set CONFIG_CPU_LITTLE_ENDIAN=y @@ -27,7 +29,6 @@ CONFIG_PPC_MICROWATT=y CONFIG_CPU_FREQ=y CONFIG_HZ_100=y CONFIG_PPC_4K_PAGES=y -# CONFIG_PPC_MEM_KEYS is not set # CONFIG_SECCOMP is not set # CONFIG_MQ_IOSCHED_KYBER is not set # CONFIG_COREDUMP is not set diff --git a/arch/powerpc/platforms/microwatt/Kconfig b/arch/powerpc/platforms/microwatt/Kconfig index 823192e9d38ad..5e320f49583aa 100644 --- a/arch/powerpc/platforms/microwatt/Kconfig +++ b/arch/powerpc/platforms/microwatt/Kconfig @@ -5,7 +5,6 @@ config PPC_MICROWATT select PPC_XICS select PPC_ICS_NATIVE select PPC_ICP_NATIVE - select PPC_HASH_MMU_NATIVE if PPC_64S_HASH_MMU select PPC_UDBG_16550 select ARCH_RANDOM help -- 2.30.2