diff --git a/hw/pci.c b/hw/pci.c
index 4dc13d2561f8752ec808b68b996fdf7851caad25..6124790f010c187023a29768da9c046ecbfeb18e 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -2165,3 +2165,8 @@ int pci_qdev_find_device(const char *id, PCIDevice **pdev)
 
     return rc;
 }
+
+MemoryRegion *pci_address_space(PCIDevice *dev)
+{
+    return dev->bus->address_space_mem;
+}
diff --git a/hw/pci.h b/hw/pci.h
index d7ad7fb95fe0cad29d03e762e148f307dfeac5c4..391217e43169aab1ea85602e75e49d985453a49b 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -220,6 +220,7 @@ void pci_default_write_config(PCIDevice *d,
                               uint32_t address, uint32_t val, int len);
 void pci_device_save(PCIDevice *s, QEMUFile *f);
 int pci_device_load(PCIDevice *s, QEMUFile *f);
+MemoryRegion *pci_address_space(PCIDevice *dev);
 
 typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level);
 typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num);