[PATCH] powerpc/64s: Default to 64K pages for 64 bit book3s

[LEROY Christophe]

Le 14/10/2021 à 01:31, Joel Stanley a écrit :
> For 64-bit book3s the default should be 64K as that's what modern CPUs
> are designed for.
> 
> The following defconfigs already set CONFIG_PPC_64K_PAGES:
> 
>   cell_defconfig
>   pasemi_defconfig
>   powernv_defconfig
>   ppc64_defconfig
>   pseries_defconfig
>   skiroot_defconfig
> 
> The have the option removed from the defconfig, as it is now the
> default.
> 
> The defconfigs that now need to set CONFIG_PPC_4K_PAGES to maintain
> their existing behaviour are:
> 
>   g5_defconfig
>   maple_defconfig
>   microwatt_defconfig
>   ps3_defconfig
> 
> Link: https://github.com/linuxppc/issues/issues/109
> Signed-off-by: Joel Stanley <joel at jms.id.au>
> ---
>   arch/powerpc/Kconfig                     | 1 +
>   arch/powerpc/configs/cell_defconfig      | 1 -
>   arch/powerpc/configs/g5_defconfig        | 1 +
>   arch/powerpc/configs/maple_defconfig     | 1 +
>   arch/powerpc/configs/microwatt_defconfig | 2 +-
>   arch/powerpc/configs/pasemi_defconfig    | 1 -
>   arch/powerpc/configs/powernv_defconfig   | 1 -
>   arch/powerpc/configs/ppc64_defconfig     | 1 -
>   arch/powerpc/configs/ps3_defconfig       | 1 +
>   arch/powerpc/configs/pseries_defconfig   | 1 -
>   arch/powerpc/configs/skiroot_defconfig   | 1 -
>   11 files changed, 5 insertions(+), 7 deletions(-)
> 

> diff --git a/arch/powerpc/configs/microwatt_defconfig b/arch/powerpc/configs/microwatt_defconfig
> index 9465209b8c5b..556ec5eec684 100644
> --- a/arch/powerpc/configs/microwatt_defconfig
> +++ b/arch/powerpc/configs/microwatt_defconfig
> @@ -1,7 +1,6 @@
>   # CONFIG_SWAP is not set
>   # CONFIG_CROSS_MEMORY_ATTACH is not set
>   CONFIG_HIGH_RES_TIMERS=y
> -CONFIG_PREEMPT_VOLUNTARY=y

This seems unrelated.

>   CONFIG_TICK_CPU_ACCOUNTING=y
>   CONFIG_LOG_BUF_SHIFT=16
>   CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=12
> @@ -26,6 +25,7 @@ CONFIG_PPC_MICROWATT=y
>   # CONFIG_PPC_OF_BOOT_TRAMPOLINE is not set
>   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