Re: [PATCH 0/3] libnvdimm/security: Enumerate the frozen state and other cleanups

Jeff reported a scenario where ndctl was failing to unlock DIMMs [1]. Through the course of debug it was discovered that the security interface on the DIMMs was in the 'frozen' state disallowing unlock, or any security operation. Unfortunately the kernel only showed that the DIMMs were 'locked', not 'locked' and 'frozen'. Introduce a new sysfs 'frozen' attribute so that ndctl can reflect the "security-operations-allowed" state independently of the lock status. Then, followup with cleanups related to replacing a security-state-enum with a set of flags. [1]: https://lists.01.org/pipermail/linux-nvdimm/2019-August/022856.html --- Dan Williams (3): libnvdimm/security: Introduce a 'frozen' attribute libnvdimm/security: Tighten scope of nvdimm->busy vs security operations libnvdimm/security: Consolidate 'security' operations drivers/acpi/nfit/intel.c | 65 +++++++----- drivers/nvdimm/bus.c | 2 drivers/nvdimm/dimm_devs.c | 134 ++++++-------------------- drivers/nvdimm/nd-core.h | 51 ++++------ drivers/nvdimm/security.c | 199 +++++++++++++++++++++++++------------- include/linux/libnvdimm.h | 9 +- tools/testing/nvdimm/dimm_devs.c | 19 +--- 7 files changed, 231 insertions(+), 248 deletions(-)