K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2018-12-14T21:07:12.574028Z
K 7
svn:log
V 578
Add some more checking to the RISC-V page fault handler.

- Panic immediately if witness says we're holding non-sleepable locks.
  This helps ensure that we don't recurse on the pmap lock in
  pmap_fault_fixup().
- Panic if the kernel faults on a user address without setting an
  onfault handler.
- Panic if the fault occurred in a critical section or interrupt
  handler, like we do on other platforms.
- Fix some style issues in trap_pfault().

Reviewed by:	jhb
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D18561

END