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

[Michael Neuling]

On Fri, 2017-06-23 at 10:50 +1000, Stewart Smith wrote:
> 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?

Yes please!

Mikey