[PATCH V4 00/14] powerpc/mm/ppc64: Add 128TB support

[Aneesh Kumar K.V]

This patch series increase the effective virtual address range of
applications from 64TB to 128TB. We do that by supporting a 
68 bit virtual address. On platforms that can only do 65 bit virtual
address we limit the max contexts to a 16bit value instead of 19.

The patch series also switch the page table layout such that we can
do 512TB effective address. But we still limit the TASK_SIZE to
128TB. This was done to make sure we don't break applications
that make assumption regarding the max address returned by the
OS. We can switch to 128TB without a linux personality value because
other architectures do 128TB as max address.

Changes from V3:
* Rebase to latest upstrea
* Fixes based on testing

Changes from V2:
* Handle hugepage size correctly.


Aneesh Kumar K.V (14):
  powerpc/mm/slice: Convert slice_mask high slice to a bitmap
  powerpc/mm/slice: Update the function prototype
  powerpc/mm: Move copy_mm_to_paca to paca.c
  powerpc/mm: Remove redundant TASK_SIZE_USER64 checks
  powerpc/mm/slice: Move slice_mask struct definition to slice.c
  powerpc/mm/slice: Update slice mask printing to use bitmap printing.
  powerpc/mm/hash: Move kernel context to the starting of context range
  powerpc/mm/hash: Support 68 bit VA
  powerpc/mm/hash: VSID 0 is no more an invalid VSID
  powerpc/mm/hash: Convert mask to unsigned long
  powerpc/mm/hash: Increase VA range to 128TB
  powerpc/mm/slice: Use mm task_size as max value of slice index
  powerpc/mm/hash64: Store task size in PACA
  powerpc/mm/hash: Skip using reserved virtual address range

 arch/powerpc/include/asm/book3s/64/hash-4k.h  |   2 +-
 arch/powerpc/include/asm/book3s/64/hash-64k.h |   2 +-
 arch/powerpc/include/asm/book3s/64/mmu-hash.h | 178 +++++++++++++----------
 arch/powerpc/include/asm/kvm_book3s_64.h      |   2 -
 arch/powerpc/include/asm/mmu.h                |  19 ++-
 arch/powerpc/include/asm/mmu_context.h        |   3 +-
 arch/powerpc/include/asm/paca.h               |  22 +--
 arch/powerpc/include/asm/page_64.h            |  14 --
 arch/powerpc/include/asm/processor.h          |  22 ++-
 arch/powerpc/kernel/asm-offsets.c             |   4 +
 arch/powerpc/kernel/paca.c                    |  21 +++
 arch/powerpc/kernel/setup-common.c            |   9 ++
 arch/powerpc/kvm/book3s_64_mmu_host.c         |  10 +-
 arch/powerpc/mm/hash_utils_64.c               |  86 +++++++++---
 arch/powerpc/mm/init_64.c                     |   4 -
 arch/powerpc/mm/mmu_context_book3s64.c        | 127 +++++++++++++----
 arch/powerpc/mm/pgtable-hash64.c              |   1 -
 arch/powerpc/mm/pgtable_64.c                  |   5 -
 arch/powerpc/mm/slb.c                         |   2 +-
 arch/powerpc/mm/slb_low.S                     |  82 +++++++----
 arch/powerpc/mm/slice.c                       | 194 +++++++++++++++-----------
 arch/powerpc/mm/tlb_hash64.c                  |   1 -
 22 files changed, 517 insertions(+), 293 deletions(-)

-- 
2.7.4