Hi Stefano,
On 16/06/2017 00:37, Stefano Stabellini wrote:
On Tue, 13 Jun 2017, Julien Grall wrote:
The file xen/arch/arm/p2m.c is using typesafe MFN in most of the place.
This requires caller to mfn_to_page and page_to_mfn to use _mfn/mfn_x.
To avoid extra _mfn/mfn_x, re-define mfn_to_page and page_to_mfn within
xen/arch/arm/p2m.c to handle typesafe MFN.
This is the same thing that x86/p2m.c does. At some point one has to
wonder if it makes sense to just bite the bullet and change mfn_to_page
everywhere.
The point of those re-definition is to split the work in smaller series
and between multiple people rather than requiring one to do the full
clean-up. It is quite a boring task but not as mechanical as you think
because often you would need to rework a bit the code around.
When we end-up to have the source code using typesafe MFN then we can
have a patch dropping the definition. Ideally all the mfn_to_* and
*_to_mfn should be typesafe. But this is a longer term goal and not my
plan here.
Cheers,
--
Julien Grall
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