Like it or not, the pgd/pud/pmd/pte hierarchy cannot be assumed once
you're amongst hugepages. What happens varies from architecture to
architecture. Perhaps the hugepage specialists could look at what
in fact the different architectures we know today are doing, and
come up with a better abstraction to encompass them all. But it's
simply wrong for a "generic" pagewalker to be going blindly in there.
Two good examples in the same file??
Hugh
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