K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2017-04-13T15:49:55.095567Z
K 7
svn:log
V 201
Map DMAP as nx.

Demotions preserve PG_NX, so it is enough to set nx bit for initial
lowest-level paging entries.

Suggested and reviewed by:	alc
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week

END