5.5 The libvirtd process displays a warning on startup

After upgrading from Oracle Linux 7 Update 4, the libvirtd process displays a warning message during startup. The message is similar to:

libvirtd ... warning : virQEMUCapsInit:1211 : Failed to get host CPU cache info 
libvirtd ... warning : virLXCDriverCapsInit:85 : Failed to get host CPU cache info 

This warning does not occur with a fresh install. You can safely ignore this warning. (Bug ID 27700583)