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config LIBNVDIMM
tristate "NVDIMM (Non-Volatile Memory Device) Support"
depends on PHYS_ADDR_T_64BIT
depends on BLK_DEV
help
Generic support for non-volatile memory devices including
ACPI-6-NFIT defined resources. On platforms that define an
NFIT, or otherwise can discover NVDIMM resources, a libnvdimm
bus is registered to advertise PMEM (persistent memory)
namespaces (/dev/pmemX) and BLK (sliding mmio window(s))
namespaces (/dev/ndX). A PMEM namespace refers to a memory
resource that may span multiple DIMMs and support DAX (see
CONFIG_DAX). A BLK namespace refers to an NVDIMM control
region which exposes an mmio register set for windowed
access mode to non-volatile memory.
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