On Tue, 21 May 2002, Linus Torvalds wrote:
> > Alternative suggestion: remove the present bit from the pgd/pmd entry.
> > After you flushed the tlb, you can clean up the page tables without a
> > hurry. That will work on any sane system and you don't have to force
> > data and table pages into the same interface.
>
> Sounds sane, except for the fact that some architectures do not actually
> care about the "Present" bit in the pgd at all.
>
> x86, to be exact ;(
IMO that's not really problem, the pmd tables are created and destroyed
with the pgd table.
bye, Roman
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