SMP freezes when ttyd0 getty started

[ejh@xxxxxxxxxxx (Eric.J.Haug)]

Hi,
synopsis:
sio0 does not work with SMP APIC_IO kernel
and my hardware.

I have an Intel PR440FX motherboard.
With a GENERIC kernel the system will boot and start
a getty on ttyd0 that does the right thing.
If i compile a kernel with the GENERIC config modified

diff GENERIC GENERICSMP
53,54c53,54
< #options      SMP                     # Symmetric MultiProcessor Kernel
< #options      APIC_IO                 # Symmetric (APIC) I/O
---
> options       SMP                     # Symmetric MultiProcessor Kernel
> options       APIC_IO                 # Symmetric (APIC) I/O

the system freezes on startup.
If i turn off the ttyd0 line in /etc/ttys
then it will boot to multiuser.
If then i edit /etc/ttys to turn on the ttyd0 line
and try to start it by kill -1 1
the system freezes before the <CR> can be echoed.
This occurs at least as early as the July 24 sources.

Does SMP and sio0 work for you?

eric