Re: [PATCH 0/3] acpi, nfit: Add dirty shutdown count to sysfs

On Thu, Sep 27, 2018 at 09:11:35AM +0200, Johannes Thumshirn wrote:

On Wed, Sep 26, 2018 at 09:24:20PM -0700, Dan Williams wrote:

quoted

The Intel NVDIMM command specification publishes a dirty-shutdown-count
in addition to the dirty-shutdown / flush-failed indication that comes
from the ACPI NFIT. This is expected to be a common property of NVDIMMs
and is a static hardware health detail to be cached / exported via
sysfs.

Add plumbing for retrieving this data at driver load time, publish the
count, and use the dynamically retrieved dirty-shutdown indicator to
augment the existing 'flush_failed' flag.

Is this the same thing as the LSS Latch stuff that went into ndctl?

On a related note, the ndctl latch implementation doesn't satisfy all
the needs, so I expect it'll be reverted

  https://lists.01.org/pipermail/linux-nvdimm/2018-September/017892.html