RE: Updated MSI Patches

[Zwane Mwaikambo]

On Tue, 12 Aug 2003, Nakajima, Jun wrote:

> static unsigned int startup_edge_ioapic_vector(unsigned int vector)
> {
> 	int was_pending = 0;
> 	unsigned long flags;
> 	int irq = vector_to_irq (vector);
> 
> 	spin_lock_irqsave(&ioapic_lock, flags);
> 	if (irq < 16) {
> 		disable_8259A_irq(irq);
> 		if (i8259A_irq_pending(irq))
> 			was_pending = 1;
> 	}
> 	__unmask_IO_APIC_irq(irq);
> 	spin_unlock_irqrestore(&ioapic_lock, flags);
> 
> 	return was_pending;
> }

Hmm that doesn't look too bad, i like, ok another question, do you think 
this could be made to scale on systems with lots of devices requiring 
vectors?

Thanks,
	Zwane

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