The software described in this documentation is either in Extended Support or Sustaining Support. See for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

2.2.3 Booting UEK R2 as a PVHVM Guest

When booting UEK R2 as a PVHVM guest, you can safely ignore the kernel message register_vcpu_info failed: err=-38, which might be displayed. (Bug ID 13713774)