[PATCH 2/2 V7] powerpc/85xx: Add machine check handler to fix PCIe erratum on mpc85xx

[Segher Boessenkool]

> In former email you doubt whether we need A variant or not.
> Any particular reason for that?
> If not should I emulate all the A ARX AU AUX and AX variant?

A/AU/AX/AUX are just normal loads, sign-extended instead of
zero-extended (so assign -1 to the register loaded).

The ARX thing is load-locked, you do not want that one.


Segher