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