Re: [Xen-devel] [PATCH v3 for-next 0/4] xen: Convert __page_to_mfn and _mfn_to_page to use typesafe MFN

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 09.11.17 at 16:20, <julien.grall@xxxxxxxxxx> wrote:
> I had a look at the files that needs to convert. It seems there are few 
> files with page_to_mfn/mfn_to_page re-defined but no callers:
>       - arch/x86/mm/hap/nested_hap.c
>       - arch/x86/mm/p2m-pt.c
>       - arch/x86/pv/traps.c
>       - arch/x86/pv/mm.c
>       - arch/x86/pv/iret.c
> 
> Those can be fixed now. That leave the following files:
>       - arch/x86/mm/p2m-ept.c
>               In that file, the override prevents all the caller to use the 
> construction mfn_to_page(_mfn(...)) as it mostly deals with hardware.

I'm not clear what you're trying to tell me here. The file has a total
for four mfn_to_page() uses - if overrides don't help (and perhaps
regardless of if they do), I think it wouldn't be very difficult to simply
change the four places. And note that plain staging has no override
there right now.

Jan


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