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CONFIG_LIBNVDIMM: NVDIMM (Non-Volatile Memory Device) Support

General informations

The Linux kernel configuration item CONFIG_LIBNVDIMM:

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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/ndblkX.Y). A PMEM namespace refers to a memory resource that may span multiple DIMMs and support DAX (see 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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