K 10
svn:author
V 8
jhibbits
K 8
svn:date
V 27
2019-08-01T03:55:58.829163Z
K 7
svn:log
V 437
powerpc64/mmu: Use a SLIST for the PVO delete list, instead of a RB_TREE

Summary:
Although it's convenient to reuse the pvo_plist for deletion, RB_TREE
insertion and removal is not free, and can result in a lot of extra work
to rebalance the tree.  Instead, use a SLIST as a LIFO delete queue,
which gives us almost free insertion, deletion, and traversal.

Reviewed by:	luporl
Differential Revision: https://reviews.freebsd.org/D21061

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