[PATCH 0/2][RFC] New version of shared page tables

I've done some cleanup and some bugfixing.  Hugh, please review
this version instead of the old one.  I like my locking mechanism
for unsharing on this one a lot better.  It works on an address
range instead of depending on a vma, which more closely reflects
the way it's used.

The first patch just standardizes the pxd_page/pxd_page_kernel macros
for all architectures.

The second patch is the heart of shared page tables.

This version of the patches is against 2.6.17-rc3.

Dave McCracken



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