Re: CVS commit: src

[Mindaugas Rasiukevicius <rmind%netbsd.org@localhost>]

yamt%mwd.biglobe.ne.jp@localhost (YAMAMOTO Takashi) wrote:
> > Not sure what do you mean by leak.  The first page is unmapped and uarea
> > layout in x86 has not changed (yet).  Probably I am missing something?
> 
> the page in question used to be hanged on the kernel aobj.
> now you made it wired and there's no way to reach it once unmapped.

Not sure what "hanged on the kernel aobj" means. :) But I see the problem.
By wired you mean mapping is unmanaged now, therefore redzone page unmap
loses the track of physical page, and thus it gets leaked.

I wonder what would be a good way to fix this.  Perhaps allocate VA and
manually enter physical pages (leaving the gap for redzone)?  Would get a
little bit more complex (as for diagnostic case).  On the other hand, I
think it would be good to setup redzone at MI level, instead of strictly
keeping it MD.

Also, is there a reason to have x86 uarea layout different from other ports?

Thanks a lot for reviewing this!

-- 
Mindaugas