[PATCH] powerpc/mm: Fix hugetlb page initialization

[Christophe Leroy]

Le 06/05/2019 à 14:03, Sachin Sant a écrit :
> This patch fixes a regression by using correct kernel config variable
> for HUGETLB_PAGE_SIZE_VARIABLE.
> 
> Without this huge pages are disabled during kernel boot.
> [0.309496] hugetlbfs: disabling because there are no supported hugepage sizes
> 
> Fixes: c5710cd20735 ("powerpc/mm: cleanup HPAGE_SHIFT setup")
> Reported-by: Sachin Sant <sachinp at linux.ibm.com>
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
> Tested-by: Sachin Sant <sachinp at linux.ibm.com>

Reviewed-by: Christophe Leroy <christophe.leroy at c-s.fr>

> 
> ---
> diff -Narup a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
> --- a/arch/powerpc/mm/hugetlbpage.c	2019-05-06 07:30:11.711092744 -0400
> +++ b/arch/powerpc/mm/hugetlbpage.c	2019-05-06 07:29:32.963433258 -0400
> @@ -640,7 +640,7 @@ static int __init hugetlbpage_init(void)
>   			pgtable_cache_add(PTE_T_ORDER);
>   	}
>   
> -	if (IS_ENABLED(HUGETLB_PAGE_SIZE_VARIABLE))
> +	if (IS_ENABLED(CONFIG_HUGETLB_PAGE_SIZE_VARIABLE))
>   		hugetlbpage_init_default();
>   
>   	return 0;
>