Re: [PATCH -next v4 1/4] mm: page_table_check: move pxx_user_accessible_page into x86

[Anshuman Khandual <anshuman.khandual@xxxxxxx>]

On 4/18/22 09:14, Tong Tiangen wrote:
> --- a/mm/page_table_check.c
> +++ b/mm/page_table_check.c
> @@ -10,6 +10,14 @@
>  #undef pr_fmt
>  #define pr_fmt(fmt)	"page_table_check: " fmt
>  
> +#ifndef PMD_PAGE_SIZE
> +#define PMD_PAGE_SIZE	PMD_SIZE
> +#endif
> +
> +#ifndef PUD_PAGE_SIZE
> +#define PUD_PAGE_SIZE	PUD_SIZE
> +#endif

Why cannot PMD_SIZE/PUD_SIZE be used on every platform instead ? What is the
need for using PUD_PAGE_SIZE/PMD_PAGE_SIZE ? Are they different on x86 ?