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Re: reduce size of pv_pte

On Fri, May 13, 2011 at 02:11:55AM +0000, YAMAMOTO Takashi wrote:
> > Do all amd64 machines have only a few physical memory segments?
> i don't think so.
> linux folks put amazing efforts to speed up their PHYS_TO_VM_PAGE
> equivalent for their big irons.

I remember something about linux defining physical memory in fixed
size units (some number of MB) - which means you gt a lot of entries
for a single large block of pysical memory.


David Laight: david%l8s.co.uk@localhost

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