Re: SMP kernel hanging at when testing 8254 interrupt delivery

[Chip Norkus <wd@xxxxxxxx>]

David P. Reese Jr. wrote:
> A UP kernel boots just fine, however when I try to boot an SMP kernel the
> boot process hangs in a loop in sys/i386/isa/clock.c.
>
> $DragonFly: src/sys/i386/isa/clock.c,v 1.4 2003/07/06 21:23:49 dillon Exp $
> ...
> #ifdef APIC_IO
>         if (apic_8254_trial) {
>                 
>                 printf("APIC_IO: Testing 8254 interrupt delivery\n");
>                 while (read_intr_count(8) < 6)      <-- hangs here
>                         ;       /* nothing */
>
> What is most bothersome is that the SMP kernel hoses my CMOS checksum,
> hinting that this is a result of a larger problem.

I've got the same hang, but it's not hosing anything else on my system. 
 I will try and take a stab at it later tomorrow (light on sleep tonight).

My snapshot is as of about 6pm CDT today.

-wd