powerpc/livepatch: Fix livepatch stack access

[Michael Ellerman]

On Wed, 2017-09-20 at 10:19:51 UTC, Kamalesh Babulal wrote:
> While running stress test with livepatch module loaded, kernel
> bug was triggered.
...
> 
> Signed-off-by: Kamalesh Babulal <kamalesh at linux.vnet.ibm.com>
> Cc: Balbir Singh <bsingharora at gmail.com>
> Cc: Naveen N. Rao <naveen.n.rao at linux.vnet.ibm.com>
> Cc: linuxppc-dev at lists.ozlabs.org

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/e36a82ee4c514a2f4f8fa30c780ad0

cheers