diff --git a/src/bhyve/bhyve_device.c b/src/bhyve/bhyve_device.c
index 207ac6a2dd56a490b4c590b8ab1ef84c2f06d3da..a59dfe45195ff80f5f1e63055432196f90b1590d 100644
--- a/src/bhyve/bhyve_device.c
+++ b/src/bhyve/bhyve_device.c
@@ -71,7 +71,8 @@ bhyveDomainPCIAddressSetCreate(virDomainDefPtr def, unsigned int nbuses)
 {
     virDomainPCIAddressSetPtr addrs;
 
-    if ((addrs = virDomainPCIAddressSetAlloc(nbuses)) == NULL)
+    if ((addrs = virDomainPCIAddressSetAlloc(nbuses,
+                                             VIR_PCI_ADDRESS_EXTENSION_NONE)) == NULL)
         return NULL;
 
     if (virDomainPCIAddressBusSetModel(&addrs->buses[0],
diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index e4ed143b76b49c21a7ffeac417f8016075889363..0c00302c13854dc1d588e68de5fa8a49f75f57bb 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -27,6 +27,7 @@
 #include "virlog.h"
 #include "virstring.h"
 #include "domain_addr.h"
+#include "virhashcode.h"
 
 #define VIR_FROM_THIS VIR_FROM_DOMAIN
 
@@ -727,8 +728,93 @@ virDomainPCIAddressReleaseAddr(virDomainPCIAddressSetPtr addrs,
     addrs->buses[addr->bus].slot[addr->slot].functions &= ~(1 << addr->function);
 }
 
+
+static uint32_t
+virZPCIAddrKeyCode(const void *name,
+                   uint32_t seed)
+{
+    unsigned int value = *((unsigned int *)name);
+    return virHashCodeGen(&value, sizeof(value), seed);
+}
+
+
+static bool
+virZPCIAddrKeyEqual(const void *namea,
+                    const void *nameb)
+{
+    return *((unsigned int *)namea) == *((unsigned int *)nameb);
+}
+
+
+static void *
+virZPCIAddrKeyCopy(const void *name)
+{
+    unsigned int *copy;
+
+    if (VIR_ALLOC(copy) < 0)
+        return NULL;
+
+    *copy = *((unsigned int *)name);
+    return (void *)copy;
+}
+
+
+static void
+virZPCIAddrKeyFree(void *name)
+{
+    VIR_FREE(name);
+}
+
+
+static void
+virDomainPCIAddressSetExtensionFree(virDomainPCIAddressSetPtr addrs)
+{
+    if (!addrs || !addrs->zpciIds)
+        return;
+
+    virHashFree(addrs->zpciIds->uids);
+    virHashFree(addrs->zpciIds->fids);
+    VIR_FREE(addrs->zpciIds);
+}
+
+
+static int
+virDomainPCIAddressSetExtensionAlloc(virDomainPCIAddressSetPtr addrs,
+                                     virPCIDeviceAddressExtensionFlags extFlags)
+{
+    if (extFlags & VIR_PCI_ADDRESS_EXTENSION_ZPCI) {
+        if (addrs->zpciIds)
+            return 0;
+
+        if (VIR_ALLOC(addrs->zpciIds) < 0)
+            return -1;
+
+        if (!(addrs->zpciIds->uids = virHashCreateFull(10, NULL,
+                                                       virZPCIAddrKeyCode,
+                                                       virZPCIAddrKeyEqual,
+                                                       virZPCIAddrKeyCopy,
+                                                       virZPCIAddrKeyFree)))
+            goto error;
+
+        if (!(addrs->zpciIds->fids = virHashCreateFull(10, NULL,
+                                                       virZPCIAddrKeyCode,
+                                                       virZPCIAddrKeyEqual,
+                                                       virZPCIAddrKeyCopy,
+                                                       virZPCIAddrKeyFree)))
+            goto error;
+    }
+
+    return 0;
+
+ error:
+    virDomainPCIAddressSetExtensionFree(addrs);
+    return -1;
+}
+
+
 virDomainPCIAddressSetPtr
-virDomainPCIAddressSetAlloc(unsigned int nbuses)
+virDomainPCIAddressSetAlloc(unsigned int nbuses,
+                            virPCIDeviceAddressExtensionFlags extFlags)
 {
     virDomainPCIAddressSetPtr addrs;
 
@@ -739,6 +825,10 @@ virDomainPCIAddressSetAlloc(unsigned int nbuses)
         goto error;
 
     addrs->nbuses = nbuses;
+
+    if (virDomainPCIAddressSetExtensionAlloc(addrs, extFlags) < 0)
+        goto error;
+
     return addrs;
 
  error:
@@ -753,6 +843,7 @@ virDomainPCIAddressSetFree(virDomainPCIAddressSetPtr addrs)
     if (!addrs)
         return;
 
+    virDomainPCIAddressSetExtensionFree(addrs);
     VIR_FREE(addrs->buses);
     VIR_FREE(addrs);
 }
diff --git a/src/conf/domain_addr.h b/src/conf/domain_addr.h
index 435b3c5d7f0d61ea4886880d1eb1b14f1870b20c..8d64d6b79505408d6a07516c160558cf5fb45a03 100644
--- a/src/conf/domain_addr.h
+++ b/src/conf/domain_addr.h
@@ -116,6 +116,12 @@ typedef struct {
 } virDomainPCIAddressBus;
 typedef virDomainPCIAddressBus *virDomainPCIAddressBusPtr;
 
+typedef struct {
+    virHashTablePtr uids;
+    virHashTablePtr fids;
+} virDomainZPCIAddressIds;
+typedef virDomainZPCIAddressIds *virDomainZPCIAddressIdsPtr;
+
 struct _virDomainPCIAddressSet {
     virDomainPCIAddressBus *buses;
     size_t nbuses;
@@ -125,11 +131,13 @@ struct _virDomainPCIAddressSet {
     bool areMultipleRootsSupported;
     /* If true, the guest can use the pcie-to-pci-bridge controller */
     bool isPCIeToPCIBridgeSupported;
+    virDomainZPCIAddressIdsPtr zpciIds;
 };
 typedef struct _virDomainPCIAddressSet virDomainPCIAddressSet;
 typedef virDomainPCIAddressSet *virDomainPCIAddressSetPtr;
 
-virDomainPCIAddressSetPtr virDomainPCIAddressSetAlloc(unsigned int nbuses);
+virDomainPCIAddressSetPtr virDomainPCIAddressSetAlloc(unsigned int nbuses,
+                                                      virPCIDeviceAddressExtensionFlags extFlags);
 
 void virDomainPCIAddressSetFree(virDomainPCIAddressSetPtr addrs);
 
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index 43bde31e81221cfabb6ea807bd7fb7464dc24de9..ae3e8f0845d9160787457a17f23c2e5acabb362a 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -1510,8 +1510,12 @@ qemuDomainPCIAddressSetCreate(virDomainDefPtr def,
     size_t i;
     bool hasPCIeRoot = false;
     virDomainControllerModelPCI defaultModel;
+    virPCIDeviceAddressExtensionFlags extFlags = VIR_PCI_ADDRESS_EXTENSION_NONE;
 
-    if ((addrs = virDomainPCIAddressSetAlloc(nbuses)) == NULL)
+    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_ZPCI))
+        extFlags |= VIR_PCI_ADDRESS_EXTENSION_ZPCI;
+
+    if ((addrs = virDomainPCIAddressSetAlloc(nbuses, extFlags)) == NULL)
         return NULL;
 
     addrs->dryRun = dryRun;