1. A computer-implemented method to schedule access to a hardware processor, the computer-implemented method comprising: receiving, by a virtual machine manager, at least a first differential voltage frequency scaling (DVFS) value and a second DVFS value different from the first DVFS value, wherein the first DVFS value and the second DVFS value are associated with corresponding virtual machines; generating a dispatch cycle to execute the corresponding virtual machines, wherein the generated dispatch cycle includes a first group of virtual machines that are associated with the first DVFS value and includes a second group of virtual machines that are associated with the second DVFS value, and wherein the generated dispatch cycle includes blocks of allotted access time to the hardware processor; configuring the hardware processor to operate at the first DVFS value; and executing, based on the generated dispatch cycle, one or more virtual machines from the first group of virtual machines on the hardware processor while the hardware processor is configured to operate at the first DVFS value, wherein executing the one or more virtual machines from the first group of virtual machines on the hardware processor while the hardware processor is configured to operate at the first DVFS value comprises: executing a first virtual machine, wherein the first virtual machine is in the first group of virtual machines, and wherein the first virtual machine is executed during a first block of the generated dispatch cycle; executing the virtual machine manager in a second block of the generated dispatch cycle, wherein the second block of the generated dispatch cycle follows the first block of the generated dispatch cycle; and executing a second virtual machine in a third block of the generated dispatch cycle, wherein the third block of the generated dispatch cycle is a next consecutive block in the generated dispatch cycle that follows the second block of the generated dispatch cycle, and wherein the second virtual machine is in the first group of virtual machines.