From: Greg Joyce <gjoyce@xxxxxxxxxxxxxxxxxx> 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 The neutral functions are defined as weak so that they may be superseded by platform specific versions.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@xxxxxxxxxxxxxxxxxx> base-commit: ff6992735ade75aae3e35d16b17da1008d753d28 -- 2.27.0
