John Baldwin 1dce7d9e7e Skip the vm.pmap.kernel_maps sysctl by default.
This sysctl node can generate very verbose output, so don't trigger it
for sysctl -a or sysctl vm.pmap.

Reviewed by:	markj, kib
Differential Revision:	https://reviews.freebsd.org/D27504
2020-12-18 20:41:23 +00:00
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