K 10
svn:author
V 6
andrew
K 8
svn:date
V 27
2016-03-22T08:36:25.588417Z
K 7
svn:log
V 323
Use the saved program state register to detect when an exception frame is
from userpsace. Previously we could have triggered a panic by trying to
jump to a kernel address from userland as the trap handling code thought we
received an ast in kernel mode.

Obtained from:	ABT Systems Ltd
Sponsored by:	The FreeBSD Foundation

END