This series adds basic self tests for HMM and are intended for Jason Gunthorpe's rdma tree since he is making some HMM related changes that this can help test. Changes v9 -> v10: Patches 1 & 2 include Jason's changes from his cover letter: https://lkml.org/lkml/2020/4/21/1320 Patch 3 now adds the files alphbetically and removed the outdated reference to include/uapi/linux. Changes v8 -> v9: Rebased to linux-5.7.0-rc1. Moved include/uapi/linux/test_hmm.h to lib/test_hmm_uapi.h Added calls to release_mem_region() to free device private addresses Applied Jason's suggested changes for v8. Added a check for no VMA read access before migrating to device private memory. 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 | 2 + lib/Kconfig.debug | 13 + lib/Makefile | 1 + lib/test_hmm.c | 1149 ++++++++++++++++++++ lib/test_hmm_uapi.h | 59 + 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 | 1359 ++++++++++++++++++++++++ tools/testing/selftests/vm/run_vmtests | 16 + tools/testing/selftests/vm/test_hmm.sh | 97 ++ 11 files changed, 2702 insertions(+) create mode 100644 lib/test_hmm.c create mode 100644 lib/test_hmm_uapi.h create mode 100644 tools/testing/selftests/vm/hmm-tests.c create mode 100755 tools/testing/selftests/vm/test_hmm.sh -- 2.25.2
