2019-11-24 20:59:58 +00:00
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LIBNVDIMM Maintainer Entry Profile
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==================================
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Overview
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--------
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The libnvdimm subsystem manages persistent memory across multiple
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2020-05-21 16:51:37 +00:00
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architectures. The mailing list is tracked by patchwork here:
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2019-11-24 20:59:58 +00:00
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https://patchwork.kernel.org/project/linux-nvdimm/list/
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...and that instance is configured to give feedback to submitters on
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patch acceptance and upstream merge. Patches are merged to either the
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'libnvdimm-fixes' or 'libnvdimm-for-next' branch. Those branches are
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2019-11-24 20:59:58 +00:00
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available here:
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https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git/
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2020-05-21 16:51:37 +00:00
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In general patches can be submitted against the latest -rc; however, if
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2019-11-24 20:59:58 +00:00
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the incoming code change is dependent on other pending changes then the
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patch should be based on the libnvdimm-for-next branch. However, since
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persistent memory sits at the intersection of storage and memory there
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are cases where patches are more suitable to be merged through a
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Filesystem or the Memory Management tree. When in doubt copy the nvdimm
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list and the maintainers will help route.
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Submissions will be exposed to the kbuild robot for compile regression
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testing. It helps to get a success notification from that infrastructure
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before submitting, but it is not required.
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Submit Checklist Addendum
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-------------------------
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There are unit tests for the subsystem via the ndctl utility:
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https://github.com/pmem/ndctl
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Those tests need to be passed before the patches go upstream, but not
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necessarily before initial posting. Contact the list if you need help
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getting the test environment set up.
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2020-01-18 15:36:20 +00:00
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ACPI Device Specific Methods (_DSM)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Before patches enabling a new _DSM family will be considered, it must
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be assigned a format-interface-code from the NVDIMM Sub-team of the ACPI
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Specification Working Group. In general, the stance of the subsystem is
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to push back on the proliferation of NVDIMM command sets, so do strongly
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consider implementing support for an existing command set. See
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drivers/acpi/nfit/nfit.h for the set of supported command sets.
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Key Cycle Dates
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---------------
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New submissions can be sent at any time, but if they intend to hit the
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next merge window they should be sent before -rc4, and ideally
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stabilized in the libnvdimm-for-next branch by -rc6. Of course if a
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patch set requires more than 2 weeks of review, -rc4 is already too late
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and some patches may require multiple development cycles to review.
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Review Cadence
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--------------
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In general, please wait up to one week before pinging for feedback. A
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private mail reminder is preferred. Alternatively ask for other
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developers that have Reviewed-by tags for libnvdimm changes to take a
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look and offer their opinion.
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