Re: [PATCH] riscv: mm: init: mark satp_mode __ro_after_init

[Palmer Dabbelt]

On Tue, 25 Jan 2022 08:00:12 PST (-0800), jszhang@xxxxxxxxxx wrote:
> satp_mode is never modified after init, so it can be marked as
> __ro_after_init.
>
> Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxx>
> ---
>  arch/riscv/mm/init.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
> index 8347d0fda8cd..35586688a1b6 100644
> --- a/arch/riscv/mm/init.c
> +++ b/arch/riscv/mm/init.c
> @@ -38,9 +38,9 @@ EXPORT_SYMBOL(kernel_map);
>  #endif
>
>  #ifdef CONFIG_64BIT
> -u64 satp_mode = !IS_ENABLED(CONFIG_XIP_KERNEL) ? SATP_MODE_48 : SATP_MODE_39;
> +u64 satp_mode __ro_after_init = !IS_ENABLED(CONFIG_XIP_KERNEL) ? SATP_MODE_48 : SATP_MODE_39;
>  #else
> -u64 satp_mode = SATP_MODE_32;
> +u64 satp_mode __ro_after_init = SATP_MODE_32;
>  #endif
>  EXPORT_SYMBOL(satp_mode);

Thanks, this is on for-next.