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[v3,0/2] generic and PowerPC accessor functions for arch keystore

Message ID 20220801123426.585801-1-gjoyce@linux.vnet.ibm.com (mailing list archive)
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Series generic and PowerPC accessor functions for arch keystore | expand

Message

Greg Joyce Aug. 1, 2022, 12:34 p.m. UTC 
From: Greg Joyce <gjoyce@linux.vnet.ibm.com>

Architectural neutral functions have been defined for accessing
architecture specific variable store. The neutral functions are
defined as weak so that they may be superseded by platform
specific versions.

PowerPC/pseries versions of these functions provide read/write access
to the non-volatile PLPKS data store.

This functionality allows kernel code such as the block SED opal
driver to store authentication keys in a secure permanent store.

Greg Joyce (2):
  lib: define generic accessor functions for arch specific keystore
  powerpc/pseries: Override lib/arch_vars.c functions

 arch/powerpc/platforms/pseries/Makefile       |   1 +
 .../platforms/pseries/plpks_arch_ops.c        | 167 ++++++++++++++++++
 include/linux/arch_vars.h                     |  23 +++
 lib/Makefile                                  |   2 +-
 lib/arch_vars.c                               |  25 +++
 5 files changed, 217 insertions(+), 1 deletion(-)
 create mode 100644 arch/powerpc/platforms/pseries/plpks_arch_ops.c
 create mode 100644 include/linux/arch_vars.h
 create mode 100644 lib/arch_vars.c


Signed-off-by: Greg Joyce <gjoyce@linux.vnet.ibm.com>
base-commit: ff6992735ade75aae3e35d16b17da1008d753d28