[PATCH v6 0/4] generic and PowerPC SED Opal keystore

[gjoyce@linux.vnet.ibm.com]

From: Greg Joyce <gjoyce@linux.vnet.ibm.com>

This patchset has gone through numerous rounds of review and
all comments/suggetions have been addressed. I believe that
this patchset is ready for inclusion.

TCG SED Opal is a specification from The Trusted Computing Group
that allows self encrypting storage devices (SED) to be locked at
power on and require an authentication key to unlock the drive.

Generic functions have been defined for accessing SED Opal keys.
The generic functions are defined as weak so that they may be superseded
by keystore specific versions.

PowerPC/pseries versions of these functions provide read/write access
to SED Opal keys in the PLPKS keystore.

The SED block driver has been modified to read the SED Opal
keystore to populate a key in the SED Opal keyring. Changes to the
SED Opal key will be written to the SED Opal keystore.

Patch 3 "keystore access for SED Opal keys" is dependent on:
        https://lore.kernel.org/keyrings/20220818143045.680972-4-gjoyce@linux.vnet.ibm.com/T/#u

Changelog
v6:	- squashed two commits (suggested by Andrew Donnellan)

v5:	- updated to reflect changes in PLPKS API

v4:
        - scope reduced to cover just SED Opal keys
        - base SED Opal keystore is now in SED block driver
        - removed use of enum to indicate type
        - refactored common code into common function that read and
          write use
        - removed cast to void
        - added use of SED Opal keystore functions to SED block driver

v3:
        - No code changes, but per reviewer requests, adding additional
          mailing lists(keyring, EFI) for wider review.

v2:
        - Include feedback from Gregory Joyce, Eric Richter and
          Murilo Opsfelder Araujo.
        - Include suggestions from Michael Ellerman.
        - Moved a dependency from generic SED code to this patchset.
          This patchset now builds of its own.



Greg Joyce (3):
  block:sed-opal: SED Opal keystore
  block: sed-opal: keystore access for SED Opal keys
  powerpc/pseries: PLPKS SED Opal keystore support

 arch/powerpc/platforms/pseries/Kconfig        |   6 +
 arch/powerpc/platforms/pseries/Makefile       |   1 +
 .../powerpc/platforms/pseries/plpks_sed_ops.c | 114 ++++++++++++++++++
 block/Kconfig                                 |   1 +
 block/Makefile                                |   2 +-
 block/sed-opal-key.c                          |  24 ++++
 block/sed-opal.c                              |  18 ++-
 include/linux/sed-opal-key.h                  |  15 +++
 8 files changed, 178 insertions(+), 3 deletions(-)
 create mode 100644 arch/powerpc/platforms/pseries/plpks_sed_ops.c
 create mode 100644 block/sed-opal-key.c
 create mode 100644 include/linux/sed-opal-key.h

-- 
gjoyce@linux.vnet.ibm.com