Piecuu/linux-samsung-r9q2
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

cxl/pmem: Add Disable Passphrase security command support

Browse source 
Create callback function to support the nvdimm_security_ops ->disable()
callback. Translate the operation to send "Disable Passphrase" security
command for CXL memory device. The operation supports disabling a
passphrase for the CXL persistent memory device. In the original
implementation of nvdimm_security_ops, this operation only supports
disabling of the user passphrase. This is due to the NFIT version of
disable passphrase only supported disabling of user passphrase. The CXL
spec allows disabling of the master passphrase as well which
nvidmm_security_ops does not support yet. In this commit, the callback
function will only support user passphrase.

See CXL rev3.0 spec section 8.2.9.8.6.3 for reference.

Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/166983611878.2734609.10602135274526390127.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dave Jiang 2022-11-30 12:21:58 -07:00 • committed by Dan Williams
parent 53d2ce6e78
commit c4ef680d0b
4 changed files with 28 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/uapi/linux/cxl_mem.h
View file

@ -43,6 +43,7 @@
___C(GET_SCAN_MEDIA, "Get Scan Media Results"), \
___C(GET_SECURITY_STATE, "Get Security State"), \
___C(SET_PASSPHRASE, "Set Passphrase"), \
___C(DISABLE_PASSPHRASE, "Disable Passphrase"), \
___C(MAX, "invalid / last command")
#define ___C(a, b) CXL_MEM_COMMAND_ID_##a