vCPU hot-added to a RHEL6 system is not activated

Solution Verified - Updated -

Issue

  • When hot adding a new vCPU to a RHEL6.3 system it is not activated.
  • If the machine is freshly booted it works. But when the machine is up for more than 24 hours it does not work.

Environment

  • Red Hat Enterprise Linux (RHEL) 6

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