[PATCH v4 0/9] ftrace with regs + live patching for ppc64 LE (ABI v2)

Major changes since v3:
  * the graph tracer works now.
    It turned out the stack frame it tried to manipulate does not
    exist at that point.
  * changes only needed in order to support -mprofile-kernel are now
    in a separate patch, prepended.
  * Kconfig cleanup so this is only selectable on ppc64le.

Torsten Duwe (9):
  ppc64 (le): prepare for -mprofile-kernel
  ppc64le FTRACE_WITH_REGS implementation
  ppc use ftrace_modify_all_code default
  ppc64 ftrace_with_regs configuration variables
  ppc64 ftrace_with_regs: spare early boot and low level
  ppc64 ftrace: disable profiling for some functions
  ppc64 ftrace: disable profiling for some files
  Implement kernel live patching for ppc64le (ABIv2)
  Enable LIVEPATCH to be configured on ppc64le and add livepatch.o if it
    is selected.

 arch/powerpc/Kconfig                 |   7 ++
 arch/powerpc/Makefile                |   7 ++
 arch/powerpc/include/asm/ftrace.h    |   5 ++
 arch/powerpc/include/asm/livepatch.h |  45 ++++++++++
 arch/powerpc/kernel/Makefile         |  13 +--
 arch/powerpc/kernel/entry_64.S       | 164 ++++++++++++++++++++++++++++++++++-
 arch/powerpc/kernel/ftrace.c         |  88 ++++++++++++++-----
 arch/powerpc/kernel/livepatch.c      |  38 ++++++++
 arch/powerpc/kernel/module_64.c      |  38 +++++++-
 arch/powerpc/kernel/process.c        |   2 +-
 arch/powerpc/lib/Makefile            |   4 +-
 arch/powerpc/mm/fault.c              |   2 +-
 arch/powerpc/mm/hash_utils_64.c      |  18 ++--
 arch/powerpc/mm/hugetlbpage-hash64.c |   2 +-
 arch/powerpc/mm/hugetlbpage.c        |   4 +-
 arch/powerpc/mm/mem.c                |   2 +-
 arch/powerpc/mm/pgtable_64.c         |   2 +-
 arch/powerpc/mm/slb.c                |   6 +-
 arch/powerpc/mm/slice.c              |   8 +-
 kernel/trace/Kconfig                 |   5 ++
 20 files changed, 406 insertions(+), 54 deletions(-)
 create mode 100644 arch/powerpc/include/asm/livepatch.h
 create mode 100644 arch/powerpc/kernel/livepatch.c

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1.8.5.6