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SubjectRE: SMP irq sharing problem in 2.2.17
Date
> > I had a similar problem with the USB driver assigned to 
> IRQ19 but not receiving any interrupts.
> >
> > Perhaps someone more knowledgable can explain why linux
> fails under MPS1.4.
>
> Linux is fine with MPS1.4. There are two possible causes I see
>
> 1. Some clown built a USB controller with only 4 bits of
> the IRQ line
> writable/checkable. We've seen sound chips with that 'feature'
>
> 2. The MPS 1.4 tables in the BIOS are wrong. Remarkably
> common problem


Do we have any [non-kernel] software that will read/analyze MPS
tables?

Thanks,
~Randy

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