RE: smpenum patch updated to 2.6.9-rc2

[Stian Jordet <liste-NI9zH3lwcMKHXe+LvDLADg@public.gmane.org>]

man, 20,.09.2004 kl. 11.29 -0700, skrev Grover, Andrew:
> If you'd like to really figure out why this system isn't working via
> MPS, here are some things to try:
> 
> 1) Is it hanging in that function? insert a printk at the very end, to
> see.
> 2) Find the line that says "#define Dprintk (x...)" in
> include/asm-i386/apic.h and change it to "#define Dprintk (x...) printk
> (x...)". That should print out everything that's going on, so we can
> compare the working ACPI case with the non-working MPS case.


First, thank you very much for your answer, you have really helped me a
lot. 

stianj@chevrolet:~$ uname -a
Linux chevrolet 2.6.9-rc2 #38 SMP Tue Sep 21 03:46:40 CEST 2004 i686
GNU/Linux

I have now recompiled my kernel 37 times, and I have rebooted twice that
amount :) Anyway, after testing 1000 things, I have actually found the
reason (I think). In arch/i386/kernel/mpparse.c, in the function
mps_setup_io_apic_irqs, I changed

for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {

to

for (pin = 3; pin < nr_ioapic_registers[apic]; pin++) {

and now it works. I found out this after using printk's which told me
that it hanged at pin 2. I have no idea why, since all this is just
magic for me, but I hope you can help me understand it.

I'm now running in IO-APIC mode without ACPI for the first time :) USB
don't work, but they never do on VIA boards in IO-APIC mode I'm told, so
that's ok (for now... :)

Bedtime now. The clock is 4 AM :)

Best regards,
Stian



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