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In case an nvdimm is found to be unarmed during probe then set its NDD_UNARMED flag before nvdimm_create(). This would enforce a read-only access to the ndimm region. Presently even if an nvdimm is unarmed its not marked as read-only on ppc64 guests. The patch updates papr_scm_nvdimm_init() to force query of nvdimm health via __drc_pmem_query_health() and if nvdimm is found to be unarmed then set the nvdimm flag ND_UNARMED for nvdimm_create(). Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210329113103.476760-1-vaibhav@linux.ibm.com
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.