> I wouldn't go so far as to say totally broken (mostly because I've
> tried like _hell_ to find a better way, and [despite minor successes]
> I've not been able to come up with something which covers all cases
> that even _I_ [hw tech] can think of well).
The "easy way out" seems to be physical -> virtual
page reverse mappings, these make it trivial to apply
balanced pressure on all pages.
The downside of this measure is that it costs additional
overhead and can up to double the amount of memory we
take in with page tables. Of course, this amount is only
prohibitive if the amount of page table memory was also
prohibitively large in the first place, but ... :)
-- Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose...
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