RE: [RFC] Variable Kernel Page size support

From: Chen, Kenneth W <>
Date: 2006-10-13 10:55:48
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
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Received on Fri Oct 13 10:55:53 2006

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