SMP, MD and Promise IDE Controllers

[Jeff Maki <jmaki@andrew.cmu.edu>]

Hi, everyone! Got an issue with the APIC, SMP and possible MD code - 
I've got this dual Athlon box with two Promise Ultra100TX2 cards. Each 
has two IBM disks on it, for a total of four.  I use the RH7.2 installer 
to install software raid 0, and everything works fine! No errors, 
nothing. Absolutely perfect. When I boot the *real* kernel, however, I 
get a number of things:

- I/O errors to hdi and hdk (the two disks on the second promise card - 
which isn't UDMA because the ports can't be probed. The two disks on the 
first are UDMA - never any errors on those)
- Spurious interrupt #7
- APIC error - AMD Errata #22, try noapic.

The thing works perfectly in single processor mode, by the way. I also 
tried noapic (although I still get the message to try noapic! Does this 
flag do anything!?) and also tried changing two bios options - the MP 
table to revision 1.1 or 1.4, and this strange option to "use IRQ table 
entries in MP" or some such thing. I tried both options, on and off, and 
I still get these errors. It seems to be apic related - anyone out there 
have any ideas on how I might get it working!? I also tried 2.4.14 to a 
limited fashion, but since he I/O errors corrupt the fs, so I can't try 
too many things before I have to re-install!

Thanks!!

-Jeff.