> >> i'll remove ddb_trap_hook unless anyone objects.
> >
> > Why ? I've found this usefull on occasion, when the kernel doesn't accept
> > keyboard input any more (both in dom0 and domU).
> 
> Is this for printing a trace on panic, or printing a trace on typing
> hw.cnmagic?

it's triggered whenever you enter ddb.  ie. both.

YAMAMOTO Takashi