Merge remote-tracking branches 'spi/topic/devprop', 'spi/topic/fsl', 'spi/topic/fsl...

[mirror_ubuntu-bionic-kernel.git] / drivers / dax / Kconfig

menuconfig DEV_DAX
	tristate "DAX: direct access to differentiated memory"
	default m if NVDIMM_DAX
	depends on TRANSPARENT_HUGEPAGE
	select SRCU
	help
	  Support raw access to differentiated (persistence, bandwidth,
	  latency...) memory via an mmap(2) capable character
	  device.  Platform firmware or a device driver may identify a
	  platform memory resource that is differentiated from the
	  baseline memory pool.  Mappings of a /dev/daxX.Y device impose
	  restrictions that make the mapping behavior deterministic.

if DEV_DAX

config DEV_DAX_PMEM
	tristate "PMEM DAX: direct access to persistent memory"
	depends on LIBNVDIMM && NVDIMM_DAX
	default DEV_DAX
	help
	  Support raw access to persistent memory.  Note that this
	  driver consumes memory ranges allocated and exported by the
	  libnvdimm sub-system.

	  Say Y if unsure

config NR_DEV_DAX
	int "Maximum number of Device-DAX instances"
	default 32768
	range 256 2147483647

endif