tree 4f6d713c1b48f508bdfe0bd802204aba11a40ec5
parent 49def1853334396f948dcb4cedb9347abb318df5
author Reza Arbab <arbab@linux.vnet.ibm.com> 1483475991 -0600
committer Michael Ellerman <mpe@ellerman.id.au> 1484607943 +1100

powerpc/mm: Fix memory hotplug BUG() on radix

Memory hotplug is leading to hash page table calls, even on radix:

  arch_add_memory
    create_section_mapping
      htab_bolt_mapping
        BUG_ON(!ppc_md.hpte_insert);

To fix, refactor {create,remove}_section_mapping() into hash__ and
radix__ variants. Leave the radix versions stubbed for now.

Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>