[PATCH v3 01/10] riscv: mm: Remove setup_zero_page()
Anup Patel
anup at brainfault.org
Tue Apr 13 04:49:59 BST 2021
On Mon, Apr 12, 2021 at 9:47 PM Jisheng Zhang <jszhang3 at mail.ustc.edu.cn> wrote:
>
> From: Jisheng Zhang <jszhang at kernel.org>
>
> The empty_zero_page sits at .bss..page_aligned section, so will be
> cleared to zero during clearing bss, we don't need to clear it again.
>
> Signed-off-by: Jisheng Zhang <jszhang at kernel.org>
Looks good to me.
Reviewed-by: Anup Patel <anup at brainfault.org>
Regards,
Anup
> ---
> arch/riscv/mm/init.c | 6 ------
> 1 file changed, 6 deletions(-)
>
> diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
> index 7f5036fbee8c..dbeaa4144e4d 100644
> --- a/arch/riscv/mm/init.c
> +++ b/arch/riscv/mm/init.c
> @@ -57,11 +57,6 @@ static void __init zone_sizes_init(void)
> free_area_init(max_zone_pfns);
> }
>
> -static void setup_zero_page(void)
> -{
> - memset((void *)empty_zero_page, 0, PAGE_SIZE);
> -}
> -
> #if defined(CONFIG_MMU) && defined(CONFIG_DEBUG_VM)
> static inline void print_mlk(char *name, unsigned long b, unsigned long t)
> {
> @@ -589,7 +584,6 @@ void mark_rodata_ro(void)
> void __init paging_init(void)
> {
> setup_vm_final();
> - setup_zero_page();
> }
>
> void __init misc_mem_init(void)
> --
> 2.31.0
>
>
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