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Of course that probably doesn't help you, because then the call would be
vmf_insert_page_pmd() rather than a raw pfn, but as you point out there
might be some common code we could share.

>
> As most of the rest look very similar to what pfn injections would need..
> and in the PoC of ours we're using vmf_insert_pfn_pmd/pud().

Do you have the PoC posted anywhere so I can get an understanding of how
this might be used?

> That also reminds me on whether it'll be easier to implement the new dax
> support for page struct on top of vmf_insert_pfn_pmd/pud, rather than
> removing the 1st then adding the new one.  Maybe it'll reduce code churns,
> and would that also make reviews easier?

Yeah, that's a good observation. I think it was just a quirk of how I
was developing this and also not caring about the PFN case so I'll see
what that looks like.

> It's also possible I missed something important so the old function must be
> removed.
>
> Thanks,





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