CXL-ENABLE-REGION(1) cxl Manual CXL-ENABLE-REGION(1)

# [NAME](#NAME)

cxl-enable-region - enable specified region(s).

# [SYNOPSIS](#SYNOPSIS)

```
cxl enable-region <region> [<options>]
```

# [DESCRIPTION](#DESCRIPTION)

A CXL region is composed of one or more slices of CXL memdevs, with configurable interleave settings - both the number of interleave ways, and the interleave granularity.

# [EXAMPLE](#EXAMPLE)

```
# cxl enable-region all
enabled 2 regions
```

Given any enable or disable command, if the operation is a no-op due to the current state of a target (i.e. already enabled or disabled), it is still considered successful when executed even if no actual operation is performed. The target can be a bus, decoder, memdev, or region. The operation will still succeed, and report the number of bus/decoder/memdev/region operated on, even if the operation is a no-op.

# [OPTIONS](#OPTIONS)

-b, --bus=

Restrict the operation to the specified bus.

-d, --decoder=

The root decoder to limit the operation to. Only regions that are children of the specified decoder will be acted upon.

--debug

Turn on additional debug messages including library debug.

# [COPYRIGHT](#COPYRIGHT)

Copyright © 2016 - 2022, Intel Corporation. License GPLv2: GNU GPL version 2 &lt;http://gnu.org/licenses/gpl.html&gt;. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

# [SEE ALSO](#SEE_ALSO)

[cxl-list(1)](/man/os/ndctl/cxl-list.1), [cxl-disable-region(1)](/man/os/ndctl/cxl-disable-region.1)

2026-08-31 cxl

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Document: cxl-enable-region(1) from ndctl 85-r2 (Chainguard OS)
Source: https://github.com/pmem/ndctl