1. A control method for a virtual machine for executing a virtualization module for providing a virtual machine operating on a physical machine, the physical machine comprising: a plurality of physical CPUs; and a physical memory, the virtualization module comprising a predetermined emulator, the virtualization module operating an OS on the virtual machine, the plurality of physical CPUs being capable of setting an interrupt handler executed upon reception of an interrupt from the virtual machine, the control method comprising: executing, on at least one first physical CPU out of the plurality of physical CPUs, the OS upon the reception of the interrupt; and executing, on at least one second physical CPU out of the plurality of physical CPUs, the predetermined emulator upon the reception of the interrupt.