Re: [PATCH V2 56/68] powerpc/radix: update mmu cache

[Balbir Singh]

On 09/04/16 16:13, Aneesh Kumar K.V wrote:
> With radix there is no mmu cache. Hence we don't need to do much
> in update_mmu_cache.
> 
> Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
> ---
>  arch/powerpc/mm/mem.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
> index f980da6d7569..3164ce720b3e 100644
> --- a/arch/powerpc/mm/mem.c
> +++ b/arch/powerpc/mm/mem.c
> @@ -499,6 +499,8 @@ void update_mmu_cache(struct vm_area_struct *vma, 
> unsigned long address,
>        * called with either mm->page_table_lock held or ptl lock held
>        */
>       unsigned long access = 0, trap;
> +     if (radix_enabled())
> +             return;
>  
>       /* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */
>       if (!pte_young(*ptep) || address >= TASK_SIZE)
> 
Acked-by: Balbir Singh <bsinghar...@gmail.com>
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