K 10
svn:author
V 7
attilio
K 8
svn:date
V 27
2011-10-30T00:57:56.190011Z
K 7
svn:log
V 838
Reimplement the splay tree used for idle page table pages using
md_page iterators. Additively, embed the left and right pointers as an
union with the pv_list as the page table pages don't need reverse
mapping. This way, this code is no longer using the root and left
iterators from the vm_page itself and once the red/black algorithm for
cached pages will be implemented will allow removing completely the
extra two pointers from vm_page.

Implementation notes: it is interesting to note that now
pmap_vmpage_splay() is just a copy&paste of the vm_page_splay(),
but working on the md_page iterators. This is necessary because in the
end the vm_page_splay() will be completely removed.
Also, note that pv_list iterator is renamed in a more "common" way
because of problems with macro expansions.

Outlined, discussed and reviewed by:	jeff

END