HYPERVISOR_hvm_op
if (HYPERVISOR_hvm_op(HVMOP_get_param, &a)
EXPORT_SYMBOL_GPL(HYPERVISOR_hvm_op);
if (HYPERVISOR_hvm_op(HVMOP_get_mem_type, &a)) {
rc = HYPERVISOR_hvm_op(HVMOP_pagetable_dying, &a);
rc = HYPERVISOR_hvm_op(HVMOP_pagetable_dying, &a);
rc = HYPERVISOR_hvm_op(HVMOP_set_evtchn_upcall_vector, &op);
ret = HYPERVISOR_hvm_op(HVMOP_set_param, &a);
unsigned long HYPERVISOR_hvm_op(int op, void *arg);
r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);