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cxl/memdev: Improve sanitize ABI descriptions

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Be more detailed about the CPU cache management situation. The same
goes for both sanitize and secure erase.

Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://lore.kernel.org/r/20230726051940.3570-2-dave@stgolabs.net
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
This commit is contained in:
Davidlohr Bueso 2023-07-25 22:19:38 -07:00 committed by Vishal Verma
parent 70d49bbf96
commit 0fcde5989e
1 changed files with 11 additions and 2 deletions
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13
Documentation/ABI/testing/sysfs-bus-cxl
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@ -82,7 +82,11 @@ Description:
whether it resides in persistent capacity, volatile capacity,
or the LSA, is made permanently unavailable by whatever means
is appropriate for the media type. This functionality requires
the device to be not be actively decoding any HPA ranges.
the device to be disabled, that is, not actively decoding any
HPA ranges. This permits avoiding explicit global CPU cache
management, relying instead for it to be done when a region
transitions between software programmed and hardware committed
states.
What /sys/bus/cxl/devices/memX/security/erase
@ -92,7 +96,12 @@ Contact: linux-cxl@vger.kernel.org
Description:
(WO) Write a boolean 'true' string value to this attribute to
secure erase user data by changing the media encryption keys for
all user data areas of the device.
all user data areas of the device. This functionality requires
the device to be disabled, that is, not actively decoding any
HPA ranges. This permits avoiding explicit global CPU cache
management, relying instead for it to be done when a region
transitions between software programmed and hardware committed
states.
What: /sys/bus/cxl/devices/memX/firmware/