Recompile the kernel in order to load the extended vmm module. Create a release ISO from the source and use a hypercall using .byte 0x0f,0x01,0xc1 on Intel processors and .byte 0x0f,0x01,0xd9 on AMD processors. Do NOT use the hypercall.h, as it is intended as a way to do hypercalls from the kernel. Userland applications are to implement their own way of doing hypercalls.