On Thu, Mar 09, 2017 at 09:25:08AM +0100, Ard Biesheuvel wrote:
> Align the function prototype of alloc_init_pte() with its pmd and pud
> counterparts by replacing the pfn parameter with the equivalent physical
> address.
> 
> Signed-off-by: Ard Biesheuvel <[email protected]>
> ---
>  arch/arm64/mm/mmu.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
> index 75e21c33caff..c3963c592ec3 100644
> --- a/arch/arm64/mm/mmu.c
> +++ b/arch/arm64/mm/mmu.c
> @@ -107,7 +107,7 @@ static bool pgattr_change_is_safe(u64 old, u64 new)
>  }
>  
>  static void alloc_init_pte(pmd_t *pmd, unsigned long addr,
> -                               unsigned long end, unsigned long pfn,
> +                               unsigned long end, phys_addr_t phys,
>                                 pgprot_t prot,
>                                 phys_addr_t (*pgtable_alloc)(void))
>  {
> @@ -128,8 +128,8 @@ static void alloc_init_pte(pmd_t *pmd, unsigned long addr,
>       do {
>               pte_t old_pte = *pte;
>  
> -             set_pte(pte, pfn_pte(pfn, prot));
> -             pfn++;
> +             set_pte(pte, pfn_pte(__phys_to_pfn(phys), prot));
> +             phys += PAGE_SIZE;

Minor nit: so as to align the strucutre of the loop with the other
functions, it'd be nice to have this on the final line of the loop body.

Either way:

Reviewed-by: Mark Rutland <[email protected]>

Mark.

>  
>               /*
>                * After the PTE entry has been populated once, we
> @@ -182,7 +182,7 @@ static void alloc_init_pmd(pud_t *pud, unsigned long 
> addr, unsigned long end,
>                       BUG_ON(!pgattr_change_is_safe(pmd_val(old_pmd),
>                                                     pmd_val(*pmd)));
>               } else {
> -                     alloc_init_pte(pmd, addr, next, __phys_to_pfn(phys),
> +                     alloc_init_pte(pmd, addr, next, phys,
>                                      prot, pgtable_alloc);
>  
>                       BUG_ON(pmd_val(old_pmd) != 0 &&
> -- 
> 2.7.4
> 
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