SMP linux

[Eric W. Biederman]

"Gin" <ginlin at nexcom.com.tw> writes:

> I've been stuck at this problem for a while. My linuxbios boots a
> NON-SMP kernel ok but not the SMP one. 
> The SMP kernel gets loaded and run. When it tries to access an IDE
> drive, an IDE command timed out before anything returns(kernel
> messages). My I/O APIC settings correspond to the MP table. 
>  
> All ISA devices are mapped to the I/O IOAPIC at 0xFEC00000. But where do
> we set this I/O APIC up? How does it know to route the IRQs to the local
> APIC?

Linux looks at the mptable.
  
> Another question is, does linuxbios setup the local APIC as Virtual Wire
> mode that via I/O APIC?

Usually we simply setup the local apic in virtual wire mode.
  
> My board is similar to Tyan/s2735, does anyone get this booted with a
> SMP linux before??

Good question.

Eric