On Wed, 2007-07-11 at 09:34 +0800, Dong, Eddie wrote:

> No, what you mean is only for external irq. IDT_Vectoring can happen for
> any exception injection.

Well, yes, but that really is just an attribute the irq.deferred
"source" needs to maintain, right?  I had been thinking of adding
something like this to distinquish between NMIs and EXTINTs (since they
have different interruptibility rules, etc.  Today they are all treated
as homogeneous EXTINTs once deferred ).

However, there is no reason that concept cannot be extended to support
attributes beyond EXTINT/NMI. E.g. EXCEPTION.  After all, there can only
be one deferred vector at a time and they all follow the general model
of "vector between 0-255", right? 



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