Neil Ludban <nludban@columbus.rr.com> writes:

> http://mail-index.netbsd.org/port-powerpc/2005/06/28/0000.html
> 
> The MPC8272 also has a 603e core, and this is exactly the sort
> of nonsense backtrace I was seeing.  Nobody ever offered a second
> opinion as to whether this was a fix or a workaround, but the
> symptoms have not returned.

At least on the MPC74[45-57] (G4 family), your change would be fine;
dcbi and dcbf are supposed to be identical except that dcbi is a
privelged instruction. I don't see any indication that it's a problem,
though - this seems like a G2-core-specific issue.

        - Nathan