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SubjectRe: [PATCH] sparse_irq aka dyn_irq v13
H. Peter Anvin wrote:
> Yinghai Lu wrote:
>> 2. make irq number is bus/devfn/idx, and every dev func will use 12bit range, irq number is relatively fixed not like current MSI irq creating is some kind of floating from NR_IRQS too.
>
> 2 is *STILL WRONG*, dammit!
>
> You keep bringing this one up, but our PCI addressing is
> *DOMAIN*/bus/devfn -- it falls flat on its face when you have more than
> 16 PCI domains. CAN WE PLEASE STOP WITH THIS FOOLISHNESS NOW!
>
> -hpa

Hmm, I was going to bring this up as well... ;-)

X was changed quite a while ago to domain/bus/dev/func, which was a lot easier to
deal with than trying to "offset" the bus with domain * some large number + bus.
Currently max nodes is 512 so it deserves it's own field. ;-)

Btw, are you suggesting combining device and function? That might be inadvertently
squeezing something that shouldn't be.

Thanks,
Mike


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