CPU L3 Cache is not presented to guest vCPU(s)

Solution Verified - Updated -


Running lscpu from a guest (OpenStack Nova instance) shows no CPU L3 cache information, even when CPU mode in the Nova configuration on the Compute host is set to host-passthrough.


  • Red Hat OpenStack Platform 9.0
  • Red Hat OpenStack Platform 10.0
  • Red Hat OpenStack Platform 11.0
  • Red Hat Enterprise Linux 7.3
  • Red Hat Enterprise Linux 7.4

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