[PATCH v8 0/3] mm/hmm/test: add self tests for HMM

[Ralph Campbell]

This series adds basic self tests for HMM and are intended for Jason
Gunthorpe's rdma tree which has a number of HMM patches applied.

Changes v7 -> v8:
Rebased to Jason's rdma/hmm tree, plus Jason's 6 patch series
  "Small hmm_range_fault() cleanups".
Applied a number of changes from Jason's comments.

Changes v6 -> v7:
Rebased to linux-5.6.0-rc6
Reverted back to just using mmu_interval_notifier_insert() and making
  this series only introduce HMM self tests.

Changes v5 -> v6:
Rebased to linux-5.5.0-rc6
Refactored mmu interval notifier patches
Converted nouveau to use the new mmu interval notifier API

Changes v4 -> v5:
Added mmu interval notifier insert/remove/update callable from the
  invalidate() callback
Updated HMM tests to use the new core interval notifier API

Changes v1 -> v4:
https://lore.kernel.org/linux-mm/20191104222141.5173-1-rcampbell@xxxxxxxxxx

Ralph Campbell (3):
  mm/hmm/test: add selftest driver for HMM
  mm/hmm/test: add selftests for HMM
  MAINTAINERS: add HMM selftests

 MAINTAINERS                            |    3 +
 include/uapi/linux/test_hmm.h          |   59 ++
 lib/Kconfig.debug                      |   12 +
 lib/Makefile                           |    1 +
 lib/test_hmm.c                         | 1177 +++++++++++++++++++++
 tools/testing/selftests/vm/.gitignore  |    1 +
 tools/testing/selftests/vm/Makefile    |    3 +
 tools/testing/selftests/vm/config      |    2 +
 tools/testing/selftests/vm/hmm-tests.c | 1353 ++++++++++++++++++++++++
 tools/testing/selftests/vm/run_vmtests |   16 +
 tools/testing/selftests/vm/test_hmm.sh |   97 ++
 11 files changed, 2724 insertions(+)
 create mode 100644 include/uapi/linux/test_hmm.h
 create mode 100644 lib/test_hmm.c
 create mode 100644 tools/testing/selftests/vm/hmm-tests.c
 create mode 100755 tools/testing/selftests/vm/test_hmm.sh

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2.20.1