Hi, > + object_class_property_add_bool(oc, PC_MACHINE_PIC, > + pc_machine_get_pic, pc_machine_set_pic); microvm already has such an option. We should move it from microvm to the common x86 base type so pc can use it too. > #define PC_MACHINE_PIT "pit" > +#define PC_MACHINE_PIC "pic" Oh, same for pit. Instead of both pc and microvm having that it likewise should be a property of the common x86 base machine type. take care, Gerd