HMM tests and minor fixes
Status from this message: Applied to hmm.git with Christoph's hunk merged in
Get series with b4
b4 am [email protected]Versions newest first · linked by author and title
Earlier versions · 1
| Version | Posted | Patches | Replies | Status |
|---|---|---|---|---|
| v1 | 4 patches | 4 replies | Superseded |
Changes in v4 from the cover letter
patch 1:
Unchanged except rebased on Jason's latest hmm (bbe3329e354d3ab5dc18). patch 2:
Is now part of Jason's tree.
patch 3 (now 2):
Major changes to incorporate Jason's review feedback.
* drivers/char/hmm_dmirror.c driver moved to lib/test_hmm.c
* XArray used instead of "page tables".
* platform device driver removed.
* remove redundant copyright.
Patches in v4 Applied
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | mm/hmm: make full use of walk_page_range()mm/ | +58 | 3 replies | |
| 2/2 | mm/hmm/test: add self tests for HMMMAINTAINERS include/ lib/ +8 more | +2794 | 9 replies |
Reviews trailers per patch
1 of 2 patches has a Reviewed-by or Acked-by.
| Patch | Christoph Hellwig |
|---|---|
| 1/2 | R-b |
| 2/2 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH v4 0/2] HMM tests and minor fixes
These changes are based on Jason's rdma/hmm branch (5.4.0-rc5). Patch 1 was previously posted here [1] but was dropped from that orginal series. Hopefully, the tests will reduce concerns about edge conditions. I'm sure more tests could be usefully added but I thought this was a good starting point.
Changes since v3:
patch 1:
Unchanged except rebased on Jason's latest hmm (bbe3329e354d3ab5dc18). patch 2:
Is now part of Jason's tree.
patch 3 (now 2):
Major changes to incorporate Jason's review feedback.
* drivers/char/hmm_dmirror.c driver moved to lib/test_hmm.c
* XArray used instead of "page tables".
* platform device driver removed.
* remove redundant copyright.
Changes since v2:
patch 1:
Removed hmm_range_needs_fault() and just use hmm_range_need_fault(). Updated the change log to include that it fixes a bug where hmm_range_fault() incorrectly returned an error when no fault is requested. patch 2:
Removed the confusing change log wording about DMA.
Changed hmm_range_fault() to return the PFN of the zero page like any other page.
patch 3:
Adjusted the test code to match the new zero page behavior.
Changes since v1:
Rebased to Jason's rdma/hmm branch (5.4.0-rc1). Cleaned up locking for the test driver's page tables. Incorporated Christoph Hellwig's comments.
[1] https://lore.kernel.org/linux-mm/[email protected]/
Ralph Campbell (2):
mm/hmm: make full use of walk_page_range()
mm/hmm/test: add self tests for HMM
MAINTAINERS | 3 + include/uapi/linux/test_hmm.h | 59 ++ lib/Kconfig.debug | 11 + lib/Makefile | 1 + lib/test_hmm.c | 1306 ++++++++++++++++++++++++ mm/hmm.c | 121 ++- 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 | 1295 +++++++++++++++++++++++ tools/testing/selftests/vm/run_vmtests | 16 + tools/testing/selftests/vm/test_hmm.sh | 97 ++ 12 files changed, 2852 insertions(+), 63 deletions(-) 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
Signature · 1 line
2.20.1