menuconfig DEV_DAX
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tristate "DAX: direct access to differentiated memory"
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default m if NVDIMM_DAX
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depends on TRANSPARENT_HUGEPAGE
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select SRCU
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help
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Support raw access to differentiated (persistence, bandwidth,
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latency...) memory via an mmap(2) capable character
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device. Platform firmware or a device driver may identify a
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platform memory resource that is differentiated from the
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baseline memory pool. Mappings of a /dev/daxX.Y device impose
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restrictions that make the mapping behavior deterministic.
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if DEV_DAX
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config DEV_DAX_PMEM
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tristate "PMEM DAX: direct access to persistent memory"
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depends on LIBNVDIMM && NVDIMM_DAX
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default DEV_DAX
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help
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Support raw access to persistent memory. Note that this
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driver consumes memory ranges allocated and exported by the
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libnvdimm sub-system.
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Say Y if unsure
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config NR_DEV_DAX
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int "Maximum number of Device-DAX instances"
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default 32768
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range 256 2147483647
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endif
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