>>>> set through XSCOM but the controls are now entirely done with MMIOs.
>>>> XiveSource to its owning device model.
>>>>  #define TYPE_PNV8_PSI TYPE_PNV_PSI "-POWER8"
>>>> +#define TYPE_PNV9_PSI TYPE_PNV_PSI "-POWER9"
>>> have both of them.
>> possibly. It seemed overkill for one attribute.
>>> than more explicit tests against chip type.
> consider cleaning that up something for another day.
>> Well, in this case, I think we could put 'psi->regs[reg] = val;'.
> It feels like that sentence is unfinished.
... at the end of the switch case.