Quoting Jason R Thorpe <thorpej@wasabisystems.com>:

> Be VERY careful here.  splclock() still needs to block any code
> that
> can call wakeup(), etc.

aha, there's the dma interrupts (at IPL6) which don't do anything like 
that, then there's the serial port interrupts (at IPL5) which I'll 
check.  All other interrupts are at IPL3.  Is this how to be careful 
(enough) about this?

-- 
Christian Limpach <chris@Pin.LU>