K 10
svn:author
V 3
ian
K 8
svn:date
V 27
2015-06-03T14:07:50.672617Z
K 7
svn:log
V 334
Better handling of userland sysarch() requests to flush icache.

On armv6, cache maintenance can trigger page faults.  Add handling so that
these turn into SIGSEGV that kills the process rather than panics that kill
the kernel.

Differential Revision:	https://reviews.freebsd.org/D2035
Submitted by:	Michal Meloun <meloun@miracle.cz>

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