Fix uvm_fault() seen with bwi (and some other devices?) on older non-apic i386
Fix uvm_fault() seen with bwi (and some other devices?) on older non-apic i386

reported by Michael (lesniewskister (at) gmail.com)
ok miod@ (who did all the hard work)

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