cxl/region: Add a 'uuid' attribute

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The process of provisioning a region involves triggering the creation of
a new region object, pouring in the configuration, and then binding that
configured object to the region driver to start its operation. For
persistent memory regions the CXL specification mandates that it
identified by a uuid. Add an ABI for userspace to specify a region's
uuid.

Signed-off-by: Ben Widawsky <bwidawsk@kernel.org>
[djbw: simplify locking]
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/165784334465.1758207.8224025435884752570.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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Ben Widawsky 2021-05-27 13:30:41 -07:00 • committed by Dan Williams

parent 779dd20cfb

commit dd5ba0ebbd

3 changed files with 153 additions and 0 deletions

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10

Documentation/ABI/testing/sysfs-bus-cxl

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118

drivers/cxl/core/region.c

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25

drivers/cxl/cxl.h

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