diff options
| author | Ben Widawsky <bwidawsk@kernel.org> | 2021-05-27 23:30:41 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-07-25 22:18:06 +0300 |
| commit | dd5ba0ebbdc414f4dda4dc4ec076f46fb6f26ffd (patch) | |
| tree | b7ef6ad525ee44eadd80f382ab5adbace28b8837 /Documentation/ABI | |
| parent | 779dd20cfb56c510f89877cca45529fa9f8bc450 (diff) | |
| download | linux-dd5ba0ebbdc414f4dda4dc4ec076f46fb6f26ffd.tar.xz | |
cxl/region: Add a 'uuid' attribute
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>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-cxl | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-cxl b/Documentation/ABI/testing/sysfs-bus-cxl index 6c2a501e0dd8..f4515a1c74fe 100644 --- a/Documentation/ABI/testing/sysfs-bus-cxl +++ b/Documentation/ABI/testing/sysfs-bus-cxl @@ -293,3 +293,13 @@ Contact: linux-cxl@vger.kernel.org Description: (WO) Write a string in the form 'regionZ' to delete that region, provided it is currently idle / not bound to a driver. + + +What: /sys/bus/cxl/devices/regionZ/uuid +Date: May, 2022 +KernelVersion: v5.20 +Contact: linux-cxl@vger.kernel.org +Description: + (RW) Write a unique identifier for the region. This field must + be set for persistent regions and it must not conflict with the + UUID of another region. |