[CRIU] [PATCH 0/7] lazy-pages: update checks for availability of userfaultfd

[Mike Rapoport]

Hi,

These patches refactor userfault detection kerndat and the related
functionality.  

As a part of this series kerndat initialization is moved very early and now
significant parts of cr-check maybe simplified, which is left as an
exercise to the reader^Wmaintainer ;-) 

Well, actually, I'll send a patch a bit later that will take care of
redundant calls to kdat_*.

Mike Rapoport (7):
  lazy-pages: introduce uffd_open
  kdat: move kerndat initialization to the very beginning
  cr-check: make uffd verification "extra" rather then "experimental"
  cr-check: verify uffd availability based on cached kdat
  cr-check: use two features to verify userfaultfd availability
  cr-service: require non-cooperative userfaultfd for lazy-pages
  test/zdtm: do not allow running with --lazy-pages on kernel without
    uffd

 criu/cr-check.c     | 28 +++++++++++++-----------
 criu/cr-dump.c      |  6 ------
 criu/cr-restore.c   |  3 ---
 criu/cr-service.c   | 19 ++++------------
 criu/crtools.c      |  3 +++
 criu/include/uffd.h |  5 +++++
 criu/kerndat.c      | 34 +++++++++++------------------
 criu/uffd.c         | 62 +++++++++++++++++++++++++++++++++++++++--------------
 test/zdtm.py        |  9 ++++++++
 9 files changed, 95 insertions(+), 74 deletions(-)

-- 
2.7.4