BTW, for lkml readers: this was in original post:
=================================================
We have a number of machines with identical dual PPro 200 mainboards. They all
run fine on 2.2.13 kernels. Trying 2.4.18,2.4.19,2.4.20-pre7 and even 2.2.19,
the same problem shows up:
With SMP activated in the kernel, I get the boot-messages
---------
PCI: PCI BIOS revision 2.10 entry at 0xfb0a0, last bus=0
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI BIOS passed nonexistent PCI bus 0!
PCI BIOS passed nonexistent PCI bus 0!
Limiting direct PCI/PCI transfers.
---------
Afterwards, everything runs fine, except that PCI seems to be only half-way
functional: network-cards don't give any error messages but behave just
as if the cable was disconnected scsi-cards give strange errors (don't recall
what exactly)
With SMP disabled in the kernel, everything works just fine.
================================
> > Post your .config and dmesg
>
> Here they are. In this version, CONFIG_PCI_GOBIOS=y is set. Switching to
> CONFIG_PCI_GODIRECT=y or CONFIG_PCI_GOANY=y only adds the line
> ----
> PCI: PCI BIOS revision 2.10 entry at 0xfb0a0, last bus=0
> +PCI: Using configuration type 1
> PCI: Probing PCI hardware
> ----
> without any further difference.
> .config:
> ---------------------------
> #
> # Processor type and features
> #
> CONFIG_M686=y
Can you try to boot 486-optimized kernel?
Can you remove one CPU and run SMP kernel on UP configuration?
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