Re: [PATCH] powerpc/mm: use the correct pointer when setting a 2M pte

["Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>]

Reza Arbab <arbab@linux.vnet.ibm.com> writes:

> When setting a 2M pte, radix__map_kernel_page() is using the address
>
> 	ptep = (pte_t *)pudp;
>
> Fix this conversion to use pmdp instead. Use pmdp_ptep() to do this
> instead of casting the pointer.
>

Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

> Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com>
> ---
>  arch/powerpc/mm/pgtable-radix.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
> index cfa53cc..34f1a0d 100644
> --- a/arch/powerpc/mm/pgtable-radix.c
> +++ b/arch/powerpc/mm/pgtable-radix.c
> @@ -65,7 +65,7 @@ int radix__map_kernel_page(unsigned long ea, unsigned long pa,
>  		if (!pmdp)
>  			return -ENOMEM;
>  		if (map_page_size == PMD_SIZE) {
> -			ptep = (pte_t *)pudp;
> +			ptep = pmdp_ptep(pmdp);
>  			goto set_the_pte;
>  		}
>  		ptep = pte_alloc_kernel(pmdp, ea);
> @@ -90,7 +90,7 @@ int radix__map_kernel_page(unsigned long ea, unsigned long pa,
>  		}
>  		pmdp = pmd_offset(pudp, ea);
>  		if (map_page_size == PMD_SIZE) {
> -			ptep = (pte_t *)pudp;
> +			ptep = pmdp_ptep(pmdp);
>  			goto set_the_pte;
>  		}
>  		if (!pmd_present(*pmdp)) {
> -- 
> 1.8.3.1