CmdID

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chmem

Modify the state of memory blocks (online or offline) in a Linux system. tldr-pages

On Linux

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Linux

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Modify the state of memory blocks (online or offline) in a Linux system. Typically used in virtualized environments to manage memory hotplug.

Set a memory block offline

sudo chmem --block --disable block_numberIdentify

Set a memory block online

sudo chmem --block --enable block_numberIdentify

Set a memory range offline using hexadecimal addresses

sudo chmem --disable 0xstart_address-0xend_addressIdentify

Set a memory range online using hexadecimal addresses

sudo chmem --enable 0xstart_address-0xend_addressIdentify

Set memory online and assign it to a specific zone (e.g., Movable)

sudo chmem --enable 0xstart_address --zone MovableIdentify

Display help

chmem --helpIdentify