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-rw-r--r--drivers/dax/Kconfig12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/dax/Kconfig b/drivers/dax/Kconfig
index e0700bf4893a..6fc96f03920e 100644
--- a/drivers/dax/Kconfig
+++ b/drivers/dax/Kconfig
@@ -23,12 +23,22 @@ config DEV_DAX
config DEV_DAX_PMEM
tristate "PMEM DAX: direct access to persistent memory"
depends on LIBNVDIMM && NVDIMM_DAX && DEV_DAX
+ depends on m # until we can kill DEV_DAX_PMEM_COMPAT
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
+ Say M if unsure
+
+config DEV_DAX_PMEM_COMPAT
+ tristate "PMEM DAX: support the deprecated /sys/class/dax interface"
+ depends on DEV_DAX_PMEM
+ default DEV_DAX_PMEM
+ help
+ Older versions of the libdaxctl library expect to find all
+ device-dax instances under /sys/class/dax. If libdaxctl in
+ your distribution is older than v58 say M, otherwise say N.
endif