VM live migration fails after upgrade on Emerald Rapids CPUs in OpenShift Virtualization

Solution Verified - Updated -

Issue

  • After upgrading the OpenShift Virtualization operator, live migration for some Virtual Machines (VMs) fails.
  • The target virt-launcher pod for the migration gets stuck in a "Pending" state because it cannot be scheduled onto any available node.
  • This issue only affects VMs that had been previously live-migrated before the cluster was upgraded. Newly created or started VMs migrate correctly.

Environment

  • OpenShift Virtualization 4.18.13 and Above
  • Nodes with Intel Emerald Rapids family CPUs.

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