On Sun, Feb 04, 2018 at 04:00:04PM +1100, Michael Ellerman wrote:
> From: Nicholas Piggin <npig...@gmail.com>
> commit c7305645eb0c1621351cfc104038831ae87c0053 upstream.
> In the SLB miss handler we may be returning to user or kernel. We need
> to add a check early on and save the result in the cr4 register, and
> then we bifurcate the return path based on that.
> Signed-off-by: Nicholas Piggin <npig...@gmail.com>
> [mpe: Backport to 4.4 based on patch from Balbir]
> Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
> arch/powerpc/kernel/exceptions-64s.S | 22 ++++++++++++++++++++--
> 1 file changed, 20 insertions(+), 2 deletions(-)
also applied to 4.9.y