powerpc/mm/radix: Setup AMOR in HV mode to allow key 0
Setup AMOR (Authority Mask Override Register) in HV mode so that the host and guest kernel can in turn setup IAMR. This allows us to enable key 0 in a following patch. Reported-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NBalbir Singh <bsingharora@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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