K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2016-10-28T11:53:22.464486Z
K 7
svn:log
V 527
Handle pmap_enter() over an existing 4/2M page in KVA on i386.

The userspace case was already handled by pmap_allocpte().  For kernel
VA, page table page must exist, and demote cannot fail, so we need to
just call pmap_demote_pde().  Also note that due to the machine AS
layout, promotions in the KVA on i386 are highly unlikely, so this
change is mostly for completeness.

Reviewed by:	alc, markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D8323

END