Comment 3 for bug 1357014

Breno - please have a look at this branch. The only backport was 'powerpc/thp: Invalidate old 64K based hash page mapping before insert of 4k pte'.

The following changes since commit 12dc9db804c054de7176138962a4671e2c1cbb7d:

  UBUNTU: Ubuntu-3.13.0-35.62 (2014-08-14 21:23:50 -0400)

are available in the git repository at:

  git://kernel.ubuntu.com/rtg/ubuntu-trusty.git lp1357014-powerpc-thp

for you to fetch changes up to 80436cd3c451af1b86611f5842185656607d0e76:

  powerpc/thp: Add tracepoints to track hugepage invalidate (2014-08-15 14:36:42 -0600)

----------------------------------------------------------------
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: Invalidate 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 | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------
 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, 250 insertions(+), 80 deletions(-)
 create mode 100644 include/trace/events/thp.h