vm_assign_pptdev
if (vm_assign_pptdev(ctx, pptfd) != 0) {
int vm_assign_pptdev(struct vmctx *ctx, int bus, int slot, int func);
int vm_assign_pptdev(struct vmctx *ctx, int pptfd);
int vm_assign_pptdev(struct vm *vm, int pptfd);
error = vm_assign_pptdev(sc->vmm_vm, pptdev.pptfd);