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| author | Davidlohr Bueso <dave@stgolabs.net> | 2023-06-12 11:10:37 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2023-06-25 15:34:41 -0700 |
| commit | 180ffd338c35057c3e8521d55555ae3b36b67fa6 (patch) | |
| tree | 5fbbde3ee1b018ebaa16b52696b117763bec9d3d /Documentation/ABI | |
| parent | c5c39217ff49ffb8494a671c9521c43006f87f1a (diff) | |
| download | lwn-180ffd338c35057c3e8521d55555ae3b36b67fa6.tar.gz lwn-180ffd338c35057c3e8521d55555ae3b36b67fa6.zip | |
cxl/mem: Support Secure Erase
Implement support for the non-pmem exclusive secure erase, per
CXL specs. Create a write-only 'security/erase' sysfs file to
perform the requested operation.
As with the sanitation this requires the device being offline
and thus no active HPA-DPA decoding.
The expectation is that userspace can use it such as:
cxl disable-memdev memX
echo 1 > /sys/bus/cxl/devices/memX/security/erase
cxl enable-memdev memX
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://lore.kernel.org/r/20230612181038.14421-7-dave@stgolabs.net
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 f86fe3671375..c619493e413e 100644 --- a/Documentation/ABI/testing/sysfs-bus-cxl +++ b/Documentation/ABI/testing/sysfs-bus-cxl @@ -85,6 +85,16 @@ Description: the device to be not be actively decoding any HPA ranges. +What /sys/bus/cxl/devices/memX/security/erase +Date: June, 2023 +KernelVersion: v6.5 +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. + + What: /sys/bus/cxl/devices/*/devtype Date: June, 2021 KernelVersion: v5.14 |