Re: clean way to support >32bit addr on 32bit CPU

[Deepak Saxena]

On Jan 10 2005, at 16:01, Slade Maurer was caught saying:
> Also, it would be nice to have PTEs to represent the upper 4GB such that 
> it can be mmapped to user space. PAE handled this in and it would be 
> great to have it in ARM MMU36 as well.

Not doable. I believe PAE allows for normal 4K pages to be used when
mapping > 32-bits. XSC3 and ARMv6 only allow for > 32 bit addresses 
when using 16MB pages (supersections), so we need to instead use
the hugetlb approach.

~Deepak

-- 
Deepak Saxena - dsaxena@xxxxxxxxxxx - http://www.plexity.net

If you complain once more, you'll meet an army of me. - Bjork
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