5-CURRENT totally broken on AMD64 in 32-bit mode

[David O'Brien]

The kernel changes of the past week has totally turned my AMD64 machine
that I use in 32-bit mode running FreeBSD/i386 (GENERIC):

OK boot -v
cpuid = 0; apic id = 00
instruction pointer     = 0x0:0xa00
stack pointer           = 0x0:0xffe
frame pointer           = 0x0:0x0
code segment            = base 0x0, limit 0x0, type 0x0
                        = DPL 0 , pres 0, def32 0, gran 0
processor eflags        = interrupt enabled, vm86, IOPL = 0
cuyrrent process        = 0 ()
kernel: type 30 trap, code=0
Stopped at      0xa00:  cli
db> tr
(null)(0,0,0,0,0) at 0xa00