+/* vm related stuff */
+XBT_PRIVATE sg_host_t SIMIX_vm_create(const char *name, sg_host_t ind_phys_host);
+
+XBT_PRIVATE void SIMIX_vm_destroy(sg_host_t ind_vm);
+// --
+XBT_PRIVATE void SIMIX_vm_resume(sg_host_t ind_vm, smx_process_t issuer);
+
+XBT_PRIVATE void SIMIX_vm_suspend(sg_host_t ind_vm, smx_process_t issuer);
+// --
+XBT_PRIVATE void SIMIX_vm_save(sg_host_t ind_vm, smx_process_t issuer);
+
+XBT_PRIVATE void SIMIX_vm_restore(sg_host_t ind_vm, smx_process_t issuer);
+// --
+XBT_PRIVATE void SIMIX_vm_start(sg_host_t ind_vm);
+
+XBT_PRIVATE void SIMIX_vm_shutdown(sg_host_t ind_vm, smx_process_t issuer);
+// --
+
+XBT_PRIVATE e_surf_vm_state_t SIMIX_vm_get_state(sg_host_t ind_vm);
+// --
+XBT_PRIVATE void SIMIX_vm_migrate(sg_host_t ind_vm, sg_host_t ind_dst_pm);
+
+XBT_PRIVATE void *SIMIX_vm_get_pm(sg_host_t ind_vm);
+
+XBT_PRIVATE void SIMIX_vm_set_bound(sg_host_t ind_vm, double bound);
+
+XBT_PRIVATE void SIMIX_vm_set_affinity(sg_host_t ind_vm, sg_host_t ind_pm, unsigned long mask);
+
+XBT_PRIVATE void SIMIX_vm_migratefrom_resumeto(sg_host_t vm, sg_host_t src_pm, sg_host_t dst_pm);
+
+SG_END_DECL()