Re: [PATCH] 2.5.68 Fix IO_APIC IRQ assignment bug

[Mika Penttilä]

yes the current code has the assumption of 1to1 mapping from vector to 
irq, but that's a software limitation.

--Mika

Zwane Mwaikambo wrote:

>On Mon, 21 Apr 2003, Mika Penttilä wrote:
>
>  
>
>>Why can't we use the same vector for multiple ioapic entrys? After all, 
>>we are already sharing irqs, and an irq is just a cookie for a vector. 
>>What do you mean with "lost irq routing" ?
>>    
>>
>
>Each ioredtbl can take a vector, if you assign another ioredtbl with the 
>same vector and different IRQ then you collide with the previous entry and 
>wipe it from the IDT. Also irq != vector
>
>	Zwane
>
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