Re: Some help on fast softint stuff...

[Johnny Billquist <bqt%softjar.se@localhost>]

Johnny Billquist wrote:
> I'm trying to understand, trace, and figure out a few things. I'm 
> wondering a bit about softint_dispatch(), and hope someone can answer this.
>
> When reading through the code, I got the feeling that you should always 
> be at SPL_HIGH when getting into this function, but occasionally I can 
> see that it gets called at another IPL on the VAX.
>
> Is that ok? I cannot find a definitive answer right now as I am 
> searching around...

Hmm, answering myself...

softint_dispatch() calls softint_execute() which definitely is 
documented as must be called at splhigh.

So there would seem to be either a bug in the VAX, or else a bug in the 
documentation for softint_execute().

Anyone who can answer which it is.

So far, I've only seen softint_dispatch() being called at SPL_HIGH and 
SPL_SCHED

The latter, it would seem, is not correct?

        Johnny