Hotunplugged CPUs get online again after reboot if they were disabled via 'virsh setvcpus --guest' on a running VM

Solution Verified - Updated -


  • After a reboot of a VM all configured vCPUs get online again although they have been reduced previously on the running VM with virsh setvcpus
  • Although the Config and the running VM have been reduced in available vCPUs all vCPUs get online again after a Soft Reset / Reboot of the VM


  • Red Hat Enterprise Linux (RHEL) 6
  • qemu-kvm

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