K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2019-01-03T16:21:44.695873Z
K 7
svn:log
V 376
Fix some issues with the riscv pmap_protect() implementation.

- Handle VM_PROT_EXECUTE.
- Clear PTE_D and mark the page dirty when removing write access
  from a mapping.
- Atomically clear PTE_W to avoid clobbering a hardware PTE update.

Reviewed by:	jhb, kib
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D18719

END