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Hello,

On Feb 21, 2007, at 09:46, Toru Nishimura wrote:

> NetBSD/arm, in general, does smart things with "ipending" global
> variable to implement NetBSD-peculiar (other OS camp would call it
> strange) spl(9) priority level scheme.  While this approach fits with 
> 32 way
> interrupt source, it is rather painful to adapt 64bit source.

Depends wether you really have >30 distinct interrupt sources in use. 
Macppc for instance can have  32, 64 or 128 IRQs ( some powerbooks have 
two Heathrow PICs with 64 IRQ lines each ) but only a fraction is 
actually connected to anything. So what we do there is to map those 
interrupts actually in use into a uint32_t. Not that I think this is a 
particularly nice approach but it does the job and it's fairly 
painless.

have fun
Michael
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