[deliverable/linux.git] / drivers / dax / Kconfig

menuconfig DEV_DAX
	tristate "DAX: direct access to differentiated memory"
	default m if NVDIMM_DAX
	depends on TRANSPARENT_HUGEPAGE
	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 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
Commit	Line	Data
ab68f262 DW	1	menuconfig DEV_DAX
	2	tristate "DAX: direct access to differentiated memory"
	3	default m if NVDIMM_DAX
dee41079	4	depends on TRANSPARENT_HUGEPAGE
ab68f262 DW	5	help
	6	Support raw access to differentiated (persistence, bandwidth,
	7	latency...) memory via an mmap(2) capable character
	8	device. Platform firmware or a device driver may identify a
	9	platform memory resource that is differentiated from the
	10	baseline memory pool. Mappings of a /dev/daxX.Y device impose
	11	restrictions that make the mapping behavior deterministic.
	12
	13	if DEV_DAX
	14
	15	config DEV_DAX_PMEM
	16	tristate "PMEM DAX: direct access to persistent memory"
	17	depends on NVDIMM_DAX
	18	default DEV_DAX
	19	help
	20	Support raw access to persistent memory. Note that this
	21	driver consumes memory ranges allocated and exported by the
	22	libnvdimm sub-system.
	23
	24	Say Y if unsure
	25
ba09c01d DW	26	config NR_DEV_DAX
	27	int "Maximum number of Device-DAX instances"
	28	default 32768
	29	range 256 2147483647
	30
ab68f262	31	endif