APPLIED[artful]: [SRU][Zesty][PATCH 0/4] Fixes for LP:1685792

[Seth Forshee]

On Wed, May 17, 2017 at 06:51:07AM -0400, Joseph Salisbury wrote:
> BugLink: http://bugs.launchpad.net/bugs/1685792
> 
> == SRU Justification ==
> Power9 DD1 has a hardware issue that when all threads are 
> offlined  and then any of the CPUs are onlined, they come online with an 
> incorrect PACA thereby resulting in a crash.
> 
> These four patches are in mainline as of v4.12-rc1.  They are needed to get 
> CPU-Hotplug working correctly on a Power9 DD1 system.
> 
> The first three patches are clean cherry picks, but the fourth required
> a minor backport.
> 
> == Fixes ==
> commit a7cd88da97040513e17cd77ae3e57764e854bae4
> Author: Gautham R. Shenoy <ego at linux.vnet.ibm.com>
> Date:   Wed Mar 22 20:34:14 2017 +0530
> 
>     powerpc/powernv: Move CPU-Offline idle state invocation from smp.c to idle.c
> 
> commit 9006123157886acc47bdc17e26c933d710b8d6cd
> Author: Gautham R. Shenoy <ego at linux.vnet.ibm.com>
> Date:   Wed Mar 22 20:34:15 2017 +0530
> 
>     powerpc/powernv/smp: Add busy-wait loop as fall back for CPU-Hotplug
> 
> commit f3b3f28493d93232a37d5fbb5cb5ad168ede0e1a
> Author: Gautham R. Shenoy <ego at linux.vnet.ibm.com>
> Date:   Wed Mar 22 20:34:16 2017 +0530
> 
>     powerpc/powernv/idle: Don't override default/deepest directly in kernel
> 
> commit 17ed4c8f81da2bf340d33a8c875f4d6b1dfd9398
> Author: Gautham R. Shenoy <ego at linux.vnet.ibm.com>
> Date:   Wed Mar 22 20:34:17 2017 +0530
> 
>     powerpc/powernv: Recover correct PACA on wakeup from a stop on P9 DD1

Applied to artful/master-next.