Re: [Xen-devel] [PATCH 2/3] x86/mm: Use mfn_t in type get / put call tree

[Jan Beulich <jbeulich@xxxxxxxx>]

On 13.12.2019 18:37, George Dunlap wrote:
> Replace `unsigned long` with `mfn_t` as appropriate throughout
> alloc/free_lN_table, get/put_page_from_lNe, and
> get_lN_linear_pagetable.  This obviates the need for a load of
> `mfn_x()` and `_mfn()` casts.
> 
> Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>

Ah, here we go. Sorry for not spotting before giving the remark
on patch 1.

> --- a/xen/arch/x86/mm.c
> +++ b/xen/arch/x86/mm.c
> @@ -681,10 +681,10 @@ boolean_param("pv-linear-pt", opt_pv_linear_pt);
>  #define define_get_linear_pagetable(level)                                  \
>  static int                                                                  \
>  get_##level##_linear_pagetable(                                             \
> -    level##_pgentry_t pde, unsigned long pde_pfn, struct domain *d)         \
> +    level##_pgentry_t pde, mfn_t pde_pfn, struct domain *d)                 \

Perhaps better pde_mfn then here, ...

>  {                                                                           \
>      unsigned long x, y;                                                     \
> -    unsigned long pfn;                                                      \
> +    mfn_t pfn;                                                              \

... pfn here, and likewise elsewhere? If you agree,
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
with this renaming.

Jan

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