From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Date: Fri, 13 Oct 2006 00:55:48 +0000
Subject: RE: [RFC] Variable Kernel Page size support
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Chen, Kenneth wrote on Thursday, October 12, 2006 5:51 PM
> > If set then a lookup is performed using the region7_pgdir table.
> > That table is segmented into 8 section for the varying page
> > sizes supported.
> 
> What is the reason to anchor these 8 sections with pgdir?  Can't we just
> extract page size directly from the virtual address? Chop off bit 54 - 60,
> that's the physical address, whola.  I don't see why it can't be done.

For a very large contiguous virtual address space, I guess there is no way
to get around page table indirection.  Oh well.  Never mind.

- Ken