> To support R5900 CPU, I want to commit following patch.
> ftp://ftp.netbsd.org/pub/NetBSD/misc/uch/playstation2/playstation2/mips.patch
> Any comments?
>
> R5900 feature (a part of) 
> + R4000 like MMU but 32bit mode only. 

One point which affects NetBSD/mips in general.  It would be better to
avoid dmtc0/dmfc0 and keep other dXXX arithmetics minimal in order to
make entire code sane and less painfull for MIPS32 processor.  64bit pointer
is hardly justified before NetBSD/mips64.   And MIPS32 can be considered
as a "norm case" keeping other type processor compatiblities in mind.

Tohru Nishimura