drivers/nvdimm/Kconfig

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