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[v3a,0/2] generic and PowerPC accessor functions for arch keystore

Message ID 20220808154345.11240-1-gjoyce@linux.vnet.ibm.com
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Series generic and PowerPC accessor functions for arch keystore | expand

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Greg Joyce Aug. 8, 2022, 3:43 p.m. UTC 
From: Greg Joyce <gjoyce@linux.vnet.ibm.com>

Changelog v3a:
        - No code changes, but per reviewer requests, adding additional
          mailing lists(keyring, EFI) for wider review.

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defined as weak so that they may be superseded by platform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. The functions have been desigined so that 
they can support a large range of platforms/architectures.

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