root@garbled.net wrote:

> Well.. it might be..  are you looking at the prep code, or the powerpc shared
> code?  BAT mappings are really fast.. and the preferred way to wire things up
> on powerpc.  Are you talking about how we batmap the whole PCI IO and MEM
> spaces in machdep, or something else?  The big batmaps in machdep.c are probably
> the ideal way to do things.

Ah, I just misread the code. I thought powerpc/bus_space.c:memio_map()
did BAT mappings, but now I see it just looks up BAT mapped regions.
Sorry for the confusion.

Anyway, I'll check more what trigges the problem on my 7248.
---
Izumi Tsutsui