Nicholas Piggin c7305645eb powerpc/64s: Convert slb_miss_common to use RFI_TO_USER/KERNEL
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 <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-10 03:07:33 +11:00
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