Properly check for VM_MAX_KERNEL_ADDRESS wraparound in the guard pages code. ok ariane@
Properly check for VM_MAX_KERNEL_ADDRESS wraparound in the guard pages code.
ok ariane@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars