ACK / APPLIED[artful]: [PATCH][Zesty] UBUNTU: SAUCE: powerpc: Invalidate ERAT on powersave wakeup for POWER9

[Breno Leitao]

Hi Seth,

On Tue, Jun 27, 2017 at 01:23:26PM -0500, Seth Forshee wrote:
> On Tue, Jun 27, 2017 at 01:45:27PM -0300, Breno Leitao wrote:
> > From: Michael Neuling <mikey at neuling.org>
> > 
> > BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1700521
> > 
> > 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>
> > Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> > (backported from: https://patchwork.ozlabs.org/patch/780365/)
> > Signed-off-by: Breno Leitao <leitao at debian.org>
> 
> Acked-by: Seth Forshee <seth.forshee at canonical.com>
> 
> I also applied this to artful/master-next and unstable/master, using the
> patch from patchworks since this backport didn't apply cleanly.

Nice, thanks. I expect that this patch gets integrated very soon, so, it
will be overwritten on artful by the 'official' commit very soon.