[PATCH 0/3] livepatch: add shadow variable API

[Joe Lawrence]

This patchset is a simplified livepatch port of kpatch's "shadow"
variable API [1].  The kpatch project has successfully employed such
shadow variables to implement patches that have extended data structure
elements.  This API provides livepatch a means of associating new,
shadow data fields with existing data structures. 

See the first patch for the implementation, the second for further
documentation (API, conccurency notes, use-case code snippets) and the
third patch for an update to the sample livepatch module using shadow
variables.

[1] https://github.com/dynup/kpatch/blob/master/kmod/core/shadow.c

Joe Lawrence (3):
  livepatch: introduce shadow variable API
  livepatch: add shadow variable documentation
  livepatch: add shadow variable sample program

 Documentation/livepatch/shadow-vars.txt | 175 ++++++++++++++++++++++++++++++++
 include/linux/livepatch.h               |   4 +
 kernel/livepatch/Makefile               |   2 +-
 kernel/livepatch/shadow.c               | 115 +++++++++++++++++++++
 samples/livepatch/livepatch-sample.c    |  39 ++++++-
 5 files changed, 333 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/livepatch/shadow-vars.txt
 create mode 100644 kernel/livepatch/shadow.c

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1.8.3.1