[PATCH v3 18/18] powerpc/microwatt: Don't select the hash MMU code

[Christophe Leroy]

Le 22/10/2021 à 00:30, Nicholas Piggin a écrit :
> Microwatt is radix-only, so it does not require hash MMU support.
> 
> This saves 20kB compressed dtbImage and 56kB vmlinux size.

I think patch 17 and 18 should be squashed together.

> 
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
> ---
>   arch/powerpc/configs/microwatt_defconfig | 2 +-
>   arch/powerpc/platforms/microwatt/Kconfig | 1 -
>   2 files changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/powerpc/configs/microwatt_defconfig b/arch/powerpc/configs/microwatt_defconfig
> index 6e62966730d3..de1dcff05734 100644
> --- a/arch/powerpc/configs/microwatt_defconfig
> +++ b/arch/powerpc/configs/microwatt_defconfig
> @@ -16,6 +16,7 @@ CONFIG_EMBEDDED=y
>   # 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 +28,6 @@ CONFIG_PPC_MICROWATT=y
>   # CONFIG_PPC_OF_BOOT_TRAMPOLINE is not set
>   CONFIG_CPU_FREQ=y
>   CONFIG_HZ_100=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
>