RE: [PATCH] 2.5.31 Summit NUMA patch with dynamic IRQ balancing

From: Grover, Andrew (
Date: Fri Aug 23 2002 - 19:29:10 EST

> From: James Cleverdon []
> > This should be moved to acpi.h
> Will be, once I'm sure this is the right way to go. As
> mentioned earlier, I'm
> having ACPI problems that seem to imply ACPI isn't building
> the full IRQ
> table. In 2.4 we could let MPS do this. Maybe 2.5 will need
> to revert to
> that behavior.

What happens when you use the FULL ACPI support? I suspect that you really
do want the interpreter, in order to evaluate _PRTs properly.

ISTR that the reason you are thinking that ACPI only is programming some of
the ioapic entries is because whatever is printing them is looking at the
mp_irqs array. Which is MPS specific. So ACPI doesn't bother filling it all
in. :)

Is that a bug? Should ACPI fill it in completely, or maybe not at all? Don't
know. But it is strictly unnecessary.

Regards -- Andy
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