K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2019-10-08T14:54:35.298231Z
K 7
svn:log
V 237
Clear PGA_WRITEABLE in riscv's pmap_remove_l3().

pmap_remove_l3() may remove the last mapping of a page, in which case
it must clear PGA_WRITEABLE.

Reported by:	Jenkins, via lwhsu
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation

END