diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index c8a8aab..50b86d5 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -2745,11 +2745,15 @@
 bool pci_device_set_iommu_device(PCIDevice *dev, HostIOMMUDevice *hiod,
                                  Error **errp)
 {
-    PCIBus *iommu_bus;
+    PCIBus *iommu_bus, *aliased_bus;
+    int aliased_devfn;
 
     /* set_iommu_device requires device's direct BDF instead of aliased BDF */
-    pci_device_get_iommu_bus_devfn(dev, &iommu_bus, NULL, NULL);
+    pci_device_get_iommu_bus_devfn(dev, &iommu_bus,
+                                   &aliased_bus, &aliased_devfn);
     if (iommu_bus && iommu_bus->iommu_ops->set_iommu_device) {
+        hiod->aliased_bus = aliased_bus;
+        hiod->aliased_devfn = aliased_devfn;
         return iommu_bus->iommu_ops->set_iommu_device(pci_get_bus(dev),
                                                       iommu_bus->iommu_opaque,
                                                       dev->devfn, hiod, errp);
diff --git a/include/sysemu/host_iommu_device.h b/include/sysemu/host_iommu_device.h
index 40e0fa1..ee6c813 100644
--- a/include/sysemu/host_iommu_device.h
+++ b/include/sysemu/host_iommu_device.h
@@ -35,6 +35,8 @@
 
     char *name;
     void *agent; /* pointer to agent device, ie. VFIO or VDPA device */
+    PCIBus *aliased_bus;
+    int aliased_devfn;
     HostIOMMUDeviceCaps caps;
 };