Applies to SUSE Linux Enterprise Server 15 SP1
28 VM Guest #
This chapter contains additional information on when SUSE Linux Enterprise Server is used in a virtual machine.
28.1 Adding and Removing CPUs #
Some virtualization environments allow adding or removing CPUs while the virtual machine is running.
For safe removal of CPUs, first deactivate them by executing
root #echo 0 > /sys/devices/system/cpu/cpuX/online
Replace X with the CPU number. To bring a CPU back online, execute
root #echo 1 > /sys/devices/system/cpu/cpuX/online