K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2018-05-30T20:39:22.345777Z
K 7
svn:log
V 563
Restore pmap_copy() for 4/4 i386 pmap.

Create yet another temporal pte mapping routine pmap_pte_quick3(),
which is the copy of the pmap_pte_quick() and relies on the
pvh_global_lock to protect the frame.  It accounts into the same
counters as pmap_pte_quick().  It is needed since pmap_copy() uses
pmap_pte_quick() already, and since a user pmap is no longer current
pmap.

pmap_copy() still provides the advantage for real-world workloads
involving lot of forks where processes do not exec immediately.

Benchmarked by:	bde
Sponsored by:	The FreeBSD Foundation

END