On Tue, 2007-10-02 at 15:58 +1000, Michael Ellerman wrote: > > Looks allright, just a question tho... what do we do if it fails ? > Do we > > try to fallback to a lower number of MSIs ? Or what ? Dead device ? > > That's all up to the device driver. In theory the driver could try again > with a lower count - but that might require extra logic in the driver to > handle shared irq handlers etc. In practice I think the current drivers > will just fail.
Question is badly phrased.. I meant something more like... what do we do if RTAS returns a lower count ? That is, we end up with that device with that lower count of MSIs enabled, we fail at the driver level, do we still somewhat keep track ? Drivers might assume that means it can use LSIs no ? which may not be the case... Shouldn't we try to switch back to LSI mode (or does the RTAS interface doesnt allow it ?) Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
