[PATCH v2 00/16] powerpc: Make hash MMU code build configurable

[Nicholas Piggin]

Now that there's a platform that can make good use of it, here's
a series that can prevent the hash MMU code being built for 64s
platforms that don't need it.

Since v1:
- Split out most of the Kconfig change from the conditional compilation
  changes.
- Split out several more changes into preparatory patches.
- Reduced some ifdefs.
- Caught a few missing hash bits: pgtable dump, lkdtm,
  memremap_compat_align.

Since RFC:
- Split out large code movement from other changes.
- Used mmu ftr test constant folding rather than adding new constant
  true/false for radix_enabled().
- Restore tlbie trace point that had to be commented out in the
  previous.
- Avoid minor (probably unreachable) behaviour change in machine check
  handler when hash was not compiled.
- Fix microwatt updates so !HASH is not enforced.
- Rebase, build fixes.

Thanks,
Nick

Nicholas Piggin (16):
  powerpc: Remove unused FW_FEATURE_NATIVE references
  powerpc: Rename PPC_NATIVE to PPC_HASH_MMU_NATIVE
  powerpc/pseries: Stop selecting PPC_HASH_MMU_NATIVE
  powerpc/64s: Move and rename do_bad_slb_fault as it is not hash
    specific
  powerpc/pseries: move pseries_lpar_register_process_table() out from
    hash specific code
  powerpc/pseries: lparcfg don't include slb_size line in radix mode
  powerpc/64s: move THP trace point creation out of hash specific file
  powerpc/64s: Make flush_and_reload_slb a no-op when radix is enabled
  powerpc/64s: move page size definitions from hash specific file
  powerpc/64s: Rename hash_hugetlbpage.c to hugetlbpage.c
  powerpc/64: pcpu setup avoid reading mmu_linear_psize on 64e or radix
  powerpc/64e: remove mmu_linear_psize
  powerpc/64s: Move hash MMU code under a new Kconfig name
  powerpc/64s: Make hash MMU support configurable
  powerpc/configs/microwatt: add POWER9_CPU
  powerpc/microwatt: Don't select the hash MMU code

 arch/powerpc/Kconfig                          |   3 +-
 arch/powerpc/configs/microwatt_defconfig      |   2 +-
 arch/powerpc/include/asm/book3s/64/mmu.h      |  19 ++-
 .../include/asm/book3s/64/tlbflush-hash.h     |   7 ++
 arch/powerpc/include/asm/book3s/64/tlbflush.h |   4 -
 arch/powerpc/include/asm/book3s/pgtable.h     |   4 +
 arch/powerpc/include/asm/firmware.h           |   8 --
 arch/powerpc/include/asm/interrupt.h          |   2 +-
 arch/powerpc/include/asm/mmu.h                |  16 ++-
 arch/powerpc/include/asm/mmu_context.h        |   2 +
 arch/powerpc/include/asm/paca.h               |   8 ++
 arch/powerpc/kernel/asm-offsets.c             |   2 +
 arch/powerpc/kernel/dt_cpu_ftrs.c             |  14 ++-
 arch/powerpc/kernel/entry_64.S                |   4 +-
 arch/powerpc/kernel/exceptions-64s.S          |  20 +++-
 arch/powerpc/kernel/mce.c                     |   2 +-
 arch/powerpc/kernel/mce_power.c               |  16 ++-
 arch/powerpc/kernel/paca.c                    |  18 ++-
 arch/powerpc/kernel/process.c                 |  13 +-
 arch/powerpc/kernel/prom.c                    |   2 +
 arch/powerpc/kernel/setup_64.c                |  26 +++-
 arch/powerpc/kexec/core_64.c                  |   4 +-
 arch/powerpc/kexec/ranges.c                   |   4 +
 arch/powerpc/kvm/Kconfig                      |   1 +
 arch/powerpc/mm/book3s64/Makefile             |  19 +--
 arch/powerpc/mm/book3s64/hash_native.c        | 104 ----------------
 arch/powerpc/mm/book3s64/hash_pgtable.c       |   1 -
 arch/powerpc/mm/book3s64/hash_utils.c         | 111 +++++++++++++++++-
 .../{hash_hugetlbpage.c => hugetlbpage.c}     |   2 +
 arch/powerpc/mm/book3s64/mmu_context.c        |  34 +++++-
 arch/powerpc/mm/book3s64/pgtable.c            |   8 ++
 arch/powerpc/mm/book3s64/radix_pgtable.c      |   4 +
 arch/powerpc/mm/book3s64/slb.c                |  16 ---
 arch/powerpc/mm/book3s64/trace.c              |   8 ++
 arch/powerpc/mm/copro_fault.c                 |   2 +
 arch/powerpc/mm/fault.c                       |  17 +++
 arch/powerpc/mm/ioremap.c                     |  19 ++-
 arch/powerpc/mm/nohash/tlb.c                  |   9 --
 arch/powerpc/mm/pgtable.c                     |  10 +-
 arch/powerpc/mm/ptdump/Makefile               |   2 +-
 arch/powerpc/platforms/52xx/Kconfig           |   2 +-
 arch/powerpc/platforms/Kconfig                |   4 +-
 arch/powerpc/platforms/Kconfig.cputype        |  21 +++-
 arch/powerpc/platforms/cell/Kconfig           |   3 +-
 arch/powerpc/platforms/chrp/Kconfig           |   2 +-
 arch/powerpc/platforms/embedded6xx/Kconfig    |   2 +-
 arch/powerpc/platforms/maple/Kconfig          |   3 +-
 arch/powerpc/platforms/microwatt/Kconfig      |   1 -
 arch/powerpc/platforms/pasemi/Kconfig         |   3 +-
 arch/powerpc/platforms/powermac/Kconfig       |   3 +-
 arch/powerpc/platforms/powernv/Kconfig        |   2 +-
 arch/powerpc/platforms/powernv/idle.c         |   2 +
 arch/powerpc/platforms/powernv/setup.c        |   2 +
 arch/powerpc/platforms/pseries/Kconfig        |   1 -
 arch/powerpc/platforms/pseries/lpar.c         |  67 ++++++-----
 arch/powerpc/platforms/pseries/lparcfg.c      |   5 +-
 arch/powerpc/platforms/pseries/mobility.c     |   6 +
 arch/powerpc/platforms/pseries/ras.c          |   2 +
 arch/powerpc/platforms/pseries/reconfig.c     |   2 +
 arch/powerpc/platforms/pseries/setup.c        |   6 +-
 arch/powerpc/xmon/xmon.c                      |   8 +-
 drivers/misc/lkdtm/Makefile                   |   2 +-
 drivers/misc/lkdtm/core.c                     |   2 +-
 63 files changed, 448 insertions(+), 270 deletions(-)
 rename arch/powerpc/mm/book3s64/{hash_hugetlbpage.c => hugetlbpage.c} (99%)
 create mode 100644 arch/powerpc/mm/book3s64/trace.c

-- 
2.23.0