1. An information processing apparatus including: a control OS execution unit, the control OS performing a processing of associating a plurality of logical processors with a physical processor by time sharing; and a guest OS execution unit, the guest OS being associated with a logical partition and being a subject that uses a logical processor, wherein the guest OS execution unit is configured to execute a data processing such that a memory-mapped I/O (MMIO) register is used in an active state where a physical processor is allocated to a logical processor corresponding to the guest OS, and wherein the control OS execution unit is configured to store in memory copy information of MMIO register corresponding to said logical processor corresponding to the guest OS, both in an active state where a physical processor is allocated to said logical processor and in an inactive state where no physical processor is allocated to said logical processor.