[PATCH] powernv: Load correct TOC pointer while waking up from winkle.

[Vaidyanathan Srinivasan]

* Benjamin Herrenschmidt <benh at kernel.crashing.org> [2016-08-06 08:38:53]:

> On Fri, 2016-08-05 at 19:13 +0530, Mahesh J Salgaonkar wrote:
> > From: Mahesh Salgaonkar <mahesh at linux.vnet.ibm.com>
> > 
> > The function pnv_restore_hyp_resource() loads the TOC into r2 from
> > the invalid PACA pointer before fixing r13 value. This do not affect
> > POWER ISA 3.0 but it does have an impact on POWER ISA 2.07 or less
> > leading CPU to get stuck forever.
> 
> When was this broken ? Should this get backported to stable ?

Broken for 4.8-rc1 only after moving the SPRN_HSPRG0 checking to
idle_book3s.S. Hence no back ports needed.

--Vaidy