Re: [PATCH] powerpc: Fix 64K page size support for PPC44x

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

Alistair Popple <alistair@popple.id.au> writes:

> PPC44x supports page sizes other than 4K however when 64K page sizes
> are selected compilation fails. This is due to a change in the
> definition of pgtable_t introduced by the following patch:
>
> commit 5c1f6ee9a31cbdac90bbb8ae1ba4475031ac74b4
> Author: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
> powerpc: Reduce PTE table memory wastage
>
> The above patch only implements the new layout for PPC64 so it doesn't
> compile for PPC32 with a 64K page size. Ideally we should implement
> the same layout for PPC32 however for the meantime this patch reverts
> the definition of pgtable_t for PPC32.
>
> Signed-off-by: Alistair Popple <alistair@popple.id.au>
> ---
>  arch/powerpc/include/asm/page.h |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
> index b9f4262..b142d58 100644
> --- a/arch/powerpc/include/asm/page.h
> +++ b/arch/powerpc/include/asm/page.h
> @@ -403,7 +403,7 @@ void arch_free_page(struct page *page, int order);
>
>  struct vm_area_struct;
>
> -#ifdef CONFIG_PPC_64K_PAGES
> +#if defined(CONFIG_PPC_64K_PAGES) && defined(PPC64)
                                               ^^^ CONFIG_PPC64 ?                                             

>  typedef pte_t *pgtable_t;
>  #else
>  typedef struct page *pgtable_t;
> -- 
> 1.7.10.4