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 <npig...@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 07d87a4044b2..eff933ebbb9e 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 823192e9d38a..5e320f49583a 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
--
2.23.0
