[PATCH] powerpc: Invalidate ERAT on powersave wakeup for POWER9

[Stewart Smith]

Michael Neuling <mikey at neuling.org> writes:
> On POWER9 the ERAT may be incorrect on wakeup from some stop states
> that lose state. This causes random segvs and illegal instructions
> when these stop states are enabled.
>
> This patch invalidates the ERAT on wakeup on POWER9 to prevent this
> from causing a problem.
>
> Signed-off-by: Michael Neuling <mikey at neuling.org>

CC: stable?

-- 
Stewart Smith
OPAL Architect, IBM.