2015-06-09 21:13:37 +03:00
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menuconfig LIBNVDIMM
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2015-05-20 05:54:31 +03:00
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tristate "NVDIMM (Non-Volatile Memory Device) Support"
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depends on PHYS_ADDR_T_64BIT
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depends on BLK_DEV
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help
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Generic support for non-volatile memory devices including
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ACPI-6-NFIT defined resources. On platforms that define an
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NFIT, or otherwise can discover NVDIMM resources, a libnvdimm
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bus is registered to advertise PMEM (persistent memory)
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namespaces (/dev/pmemX) and BLK (sliding mmio window(s))
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namespaces (/dev/ndX). A PMEM namespace refers to a memory
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resource that may span multiple DIMMs and support DAX (see
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CONFIG_DAX). A BLK namespace refers to an NVDIMM control
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region which exposes an mmio register set for windowed
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access mode to non-volatile memory.
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2015-06-09 21:13:37 +03:00
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if LIBNVDIMM
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config BLK_DEV_PMEM
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tristate "PMEM: Persistent memory block device support"
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default LIBNVDIMM
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depends on HAS_IOMEM
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help
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Memory ranges for PMEM are described by either an NFIT
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(NVDIMM Firmware Interface Table, see CONFIG_NFIT_ACPI), a
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non-standard OEM-specific E820 memory type (type-12, see
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CONFIG_X86_PMEM_LEGACY), or it is manually specified by the
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'memmap=nn[KMG]!ss[KMG]' kernel command line (see
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Documentation/kernel-parameters.txt). This driver converts
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these persistent memory ranges into block devices that are
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capable of DAX (direct-access) file system mappings. See
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Documentation/nvdimm/nvdimm.txt for more details.
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Say Y if you want to use an NVDIMM
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endif
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