summaryrefslogtreecommitdiff
path: root/drivers/dax/Kconfig
blob: daadd20aa936a85e087ba0145147ffa48eac05a9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
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