> > +#if defined(DEBUG)
> > +static void
> > +uvm_mapent_check(const struct vm_map_entry *entry)
> > +{
>  :
> > +bad:
> > +	panic("%s: bad entry %p", __func__, entry);
> > +}
> > +#endif /* defined(DEBUG) */
> 
> For DEBUG purpose, isn't it better to make uvm_mapent_check()
> (or similar macro) take __FILE__ and __LINE__ args like __assert()?

maybe.  i did so.  thanks.

YAMAMOTO Takashi