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cxl: Document missing sysfs files

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Add to the ABI documentation the payload_max and label_storage_size
read-only files, which have been there since the early days.

Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://patch.msgid.link/20250218224853.67457-3-dave@stgolabs.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
This commit is contained in:
Davidlohr Bueso 2025-02-18 14:48:53 -08:00 committed by Dave Jiang
parent eb8081bcc5
commit 17218b0228
1 changed files with 18 additions and 0 deletions
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18
Documentation/ABI/testing/sysfs-bus-cxl
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@ -18,6 +18,24 @@ Description:
specification.
What: /sys/bus/cxl/devices/memX/payload_max
Date: December, 2020
KernelVersion: v5.12
Contact: linux-cxl@vger.kernel.org
Description:
(RO) Maximum size (in bytes) of the mailbox command payload
registers. Linux caps this at 1MB if the device reports a
larger size.
What: /sys/bus/cxl/devices/memX/label_storage_size
Date: May, 2021
KernelVersion: v5.13
Contact: linux-cxl@vger.kernel.org
Description:
(RO) Size (in bytes) of the Label Storage Area (LSA).
What: /sys/bus/cxl/devices/memX/ram/size
Date: December, 2020
KernelVersion: v5.12