[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: The Firepower bugs - especially saving interrupt vectors?
> > For instance, am I correct in assuming that the function ofwr_init()
> > exists to get around a buggy firmware implementation that fails to
> > ``save and restore the first location of each interrupt that it wants to
> > "take over".' '?
> I'll answer my own question :-)
> No, it also gets around the lack of support for real mode openfirmware.
Yes, this is the main reason for this ofwr_init stuff. It saves the complete
state of the MMU immediately after the boot, so it can switch back to that
state on every call to any OpenFirmware routine.
> Can I suggest that the two be separated. The second (save of the
> interrupt vectors) being done *after* VM has been turned off.
Note that this is ONLY done for the MMU trap vectors. I imagine this as part
of the MMU state, so I cannot see any advantage in separating these two.
ws%TooLs.DE@localhost (Wolfgang Solfrank, TooLs GmbH) +49-228-985800
Main Index |
Thread Index |