d2d06767b5
This fixes /dev/kmem causing panic on machines not using DMAP. Found when running libkvm Kyua test case on QEMU VM with no Huge Pages support. Reviewed by: jhibbits, luporl Approved by: jhibbits (mentor) Sponsored by: Eldorado Research Institute (eldorado.org.br) Differential Revision: https://reviews.freebsd.org/D23776