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CXL-DISABLE-MEMDEV(1) cxl Manual CXL-DISABLE-MEMDEV(1)

NAME

cxl-disable-memdev - deactivate / hot-remove a given CXL memdev

SYNOPSIS

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

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

<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.

-f, --force

DANGEROUS: Override the safety measure that blocks attempts to disable a device if the tool determines the memdev is in active usage. Recall that CXL memory ranges might have been established by platform firmware and disabling an active device is akin to force removing memory from a running system. Going down this path does not offline active memory if they are currently online. User is recommended to offline and disable the appropriate regions before disabling the memdevs.

-v

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

COPYRIGHT

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

SEE ALSO

cxl-enable-memdev(1)

2024-05-30 cxl