cxl-enable-memdev - Man Page

activate / hot-add a given CXL memdev


cxl enable-memdev <mem0> [<mem1>..<memN>] [<options>]

A memdev typically autoenables at initial device discovery. However, if it was manually disabled this command can trigger the kernel to activate it again. This involves detecting the state of the HDM (Host Managed Device Memory) Decoders and validating that CXL.mem is enabled for each port in the device’s hierarchy.


<memory device(s)>

A memX device name, or a memdev id number. Restrict the operation to the specified memdev(s). The keyword all can be specified to indicate the lack of any restriction.

-S, --serial

Rather an a memdev id number, interpret the <memdev> argument(s) as a list of serial numbers.

-b, --bus=

Restrict the operation to the specified bus.


Turn on verbose debug messages in the library (if libcxl was built with logging and debug enabled).

See Also