In message <200003060710.QAA16000@srapc342.sra.co.jp> Noriyuki Soda writes:
: Arc's implementation is currently just same with OpenBSD's.
: And, Hpcmips's implementation is apparently better.

That's my impression.

: One of differences is that Arc uses wired TLB entries with over 4KB
: page sizes. The other difference is that arc uses sparse mapping for
: Algor P4032.

It was my impression from looking at hpcmips bus.h that it could
easily deal with the oddities of the arc, but that the arc's bus space
implementation would have problems with hpcmips.

: Anyway, arc's implementation should be rewritten.

Agreed.  Has any thought been given to adding a busdma implementation
as well?

Warner