> > IPL_* are the appropriate values to use, I think.  IPL_xxx should 
> > correspond directly to splxxx(), so there is no need for additional 
> > constants that would basically be aliases of IPL_*.
> 
> if that is so, then why is splraiseipl() necessary?
> 
> iain

because it's the cleanest way i can think of
to parametrize IPLs in MI subsystems.
please suggest an alternative, if you have any better idea.

YAMAMOTO Takashi