[PATCH V2 0/8] THP fixes for ppc64

[Aneesh Kumar K.V]

Hi,

This patch series fixes machine check exception that we observed when using
transparent huge page along with 4k hash pte on power bare metal platform.
Patch "powerpc: mm: Use read barrier when creating real_pte" is not really
related to thp, but was added in the series  because it is fixing a related
issue with 4k pte. That patch was not really needed to fix the MCE.

Changes from V1:
* Rebased to latest upstream

Aneesh Kumar K.V (8):
  powerpc: thp: Add write barrier after updating the valid bit
  powerpc: thp: don't recompute vsid and ssize in loop on invalidate
  powerpc: thp: invalidate old 64K based hash page mapping before insert
    of 4k pte
  powerpc: thp: Handle combo pages in invalidate
  powerpc: thp: inalidate with vpn in loop
  powerpc: thp: use ACCESS_ONCE when loading pmdp
  powerpc: mm: Use read barrier when creating real_pte
  powerpc: thp: Add tracepoints to track hugepage invalidate

 arch/powerpc/include/asm/machdep.h        |  6 +--
 arch/powerpc/include/asm/pgtable-ppc64.h  |  2 +-
 arch/powerpc/include/asm/pte-hash64-64k.h | 30 +++++++++--
 arch/powerpc/mm/hash_native_64.c          | 40 ++++----------
 arch/powerpc/mm/hugepage-hash64.c         | 88 +++++++++++++++++++++++++++----
 arch/powerpc/mm/pgtable_64.c              | 44 ++++++++++------
 arch/powerpc/mm/tlb_hash64.c              |  6 ++-
 arch/powerpc/platforms/pseries/lpar.c     | 20 +++----
 include/trace/events/thp.h                | 88 +++++++++++++++++++++++++++++++
 9 files changed, 245 insertions(+), 79 deletions(-)
 create mode 100644 include/trace/events/thp.h

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1.9.1