diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index f456e8a378..b4d52eebcd 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -755,6 +755,7 @@ VIR_ENUM_IMPL(virQEMUCaps,
               "disk-timed-stats", /* QEMU_CAPS_DISK_TIMED_STATS */
               "query-accelerators", /* QEMU_CAPS_QUERY_ACCELERATORS */
               "mshv", /* QEMU_CAPS_MSHV */
+              "virtio-iommu.aw-bits", /* QEMU_CAPS_VIRTIO_IOMMU_AW_BITS */
     );
 
 
@@ -1612,6 +1613,7 @@ static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioMemPCI[] =
 
 static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioIOMMU[] = {
     { "boot-bypass", QEMU_CAPS_VIRTIO_IOMMU_BOOT_BYPASS, NULL },
+    { "aw-bits", QEMU_CAPS_VIRTIO_IOMMU_AW_BITS, NULL },
 };
 
 static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioBlkCCW[] = {
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index f180844e66..b02385ab0f 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -730,6 +730,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     QEMU_CAPS_DISK_TIMED_STATS, /* timed stats support ('stats-intervals' property of disk frontends) */
     QEMU_CAPS_QUERY_ACCELERATORS, /* query-accelerators command */
     QEMU_CAPS_MSHV, /* -accel mshv */
+    QEMU_CAPS_VIRTIO_IOMMU_AW_BITS, /* virtio-iommu.aw-bits */
 
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;
diff --git a/tests/qemucapabilitiesdata/caps_10.0.0_aarch64.xml b/tests/qemucapabilitiesdata/caps_10.0.0_aarch64.xml
index 90e8d868cc..c2bffe88ad 100644
--- a/tests/qemucapabilitiesdata/caps_10.0.0_aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_10.0.0_aarch64.xml
@@ -163,6 +163,7 @@
   <flag name='nvme-ns'/>
   <flag name='usb-bot'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10000000</version>
   <microcodeVersion>61700285</microcodeVersion>
   <package>v10.0.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_10.0.0_ppc64.xml b/tests/qemucapabilitiesdata/caps_10.0.0_ppc64.xml
index 4b3cded2d1..0b9613b921 100644
--- a/tests/qemucapabilitiesdata/caps_10.0.0_ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_10.0.0_ppc64.xml
@@ -170,6 +170,7 @@
   <flag name='nvme'/>
   <flag name='nvme-ns'/>
   <flag name='usb-bot'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10000000</version>
   <microcodeVersion>42900285</microcodeVersion>
   <package>v10.0.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_10.0.0_s390x.xml b/tests/qemucapabilitiesdata/caps_10.0.0_s390x.xml
index 82a66a6524..410f7c324c 100644
--- a/tests/qemucapabilitiesdata/caps_10.0.0_s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_10.0.0_s390x.xml
@@ -136,6 +136,7 @@
   <flag name='nvme'/>
   <flag name='nvme-ns'/>
   <flag name='usb-bot'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10000000</version>
   <microcodeVersion>39100285</microcodeVersion>
   <package>v10.0.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_10.0.0_x86_64+amdsev.xml b/tests/qemucapabilitiesdata/caps_10.0.0_x86_64+amdsev.xml
index cfce1c963d..a7166aba44 100644
--- a/tests/qemucapabilitiesdata/caps_10.0.0_x86_64+amdsev.xml
+++ b/tests/qemucapabilitiesdata/caps_10.0.0_x86_64+amdsev.xml
@@ -209,6 +209,7 @@
   <flag name='amd-iommu'/>
   <flag name='usb-bot'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10000000</version>
   <microcodeVersion>43100285</microcodeVersion>
   <package>v10.0.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_10.0.0_x86_64.xml b/tests/qemucapabilitiesdata/caps_10.0.0_x86_64.xml
index f94c8388d6..4177eb06b6 100644
--- a/tests/qemucapabilitiesdata/caps_10.0.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_10.0.0_x86_64.xml
@@ -209,6 +209,7 @@
   <flag name='amd-iommu.pci-id'/>
   <flag name='usb-bot'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10000000</version>
   <microcodeVersion>43100285</microcodeVersion>
   <package>v10.0.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_10.1.0_s390x.xml b/tests/qemucapabilitiesdata/caps_10.1.0_s390x.xml
index 8d59566cc0..9faa853da2 100644
--- a/tests/qemucapabilitiesdata/caps_10.1.0_s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_10.1.0_s390x.xml
@@ -140,6 +140,7 @@
   <flag name='nvme-ns'/>
   <flag name='usb-bot'/>
   <flag name='qom-list-get'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10001000</version>
   <microcodeVersion>39100286</microcodeVersion>
   <package>v10.1.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_10.1.0_x86_64+inteltdx.xml b/tests/qemucapabilitiesdata/caps_10.1.0_x86_64+inteltdx.xml
index 377541ff53..d5566234a2 100644
--- a/tests/qemucapabilitiesdata/caps_10.1.0_x86_64+inteltdx.xml
+++ b/tests/qemucapabilitiesdata/caps_10.1.0_x86_64+inteltdx.xml
@@ -192,6 +192,7 @@
   <flag name='tdx-guest'/>
   <flag name='qom-list-get'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10001000</version>
   <microcodeVersion>43100286</microcodeVersion>
   <package>v10.1.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_10.1.0_x86_64.xml b/tests/qemucapabilitiesdata/caps_10.1.0_x86_64.xml
index 520a3d8ee8..12d2b262a5 100644
--- a/tests/qemucapabilitiesdata/caps_10.1.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_10.1.0_x86_64.xml
@@ -214,6 +214,7 @@
   <flag name='tdx-guest'/>
   <flag name='qom-list-get'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10001000</version>
   <microcodeVersion>43100286</microcodeVersion>
   <package>v10.1.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_10.2.0_aarch64.xml b/tests/qemucapabilitiesdata/caps_10.2.0_aarch64.xml
index d0c22d2541..7154cdb66c 100644
--- a/tests/qemucapabilitiesdata/caps_10.2.0_aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_10.2.0_aarch64.xml
@@ -182,6 +182,7 @@
   <flag name='acpi-generic-initiator'/>
   <flag name='disk-timed-stats'/>
   <flag name='query-accelerators'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10002000</version>
   <microcodeVersion>61700287</microcodeVersion>
   <package>v10.2.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_10.2.0_x86_64+mshv.xml b/tests/qemucapabilitiesdata/caps_10.2.0_x86_64+mshv.xml
index 2b6708be6a..0d627136e8 100644
--- a/tests/qemucapabilitiesdata/caps_10.2.0_x86_64+mshv.xml
+++ b/tests/qemucapabilitiesdata/caps_10.2.0_x86_64+mshv.xml
@@ -202,6 +202,7 @@
   <flag name='disk-timed-stats'/>
   <flag name='query-accelerators'/>
   <flag name='mshv'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10002000</version>
   <microcodeVersion>43100287</microcodeVersion>
   <package>v10.2.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_10.2.0_x86_64.xml b/tests/qemucapabilitiesdata/caps_10.2.0_x86_64.xml
index 06f7bf784d..5eae704512 100644
--- a/tests/qemucapabilitiesdata/caps_10.2.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_10.2.0_x86_64.xml
@@ -215,6 +215,7 @@
   <flag name='acpi-generic-initiator'/>
   <flag name='disk-timed-stats'/>
   <flag name='query-accelerators'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10002000</version>
   <microcodeVersion>43100287</microcodeVersion>
   <package>v10.2.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_11.0.0_aarch64.xml b/tests/qemucapabilitiesdata/caps_11.0.0_aarch64.xml
index f626f3ea46..3600be0301 100644
--- a/tests/qemucapabilitiesdata/caps_11.0.0_aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_11.0.0_aarch64.xml
@@ -182,6 +182,7 @@
   <flag name='acpi-generic-initiator'/>
   <flag name='disk-timed-stats'/>
   <flag name='query-accelerators'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10002050</version>
   <microcodeVersion>61700286</microcodeVersion>
   <package>v10.2.0-476-gcf3e71d8fc</package>
diff --git a/tests/qemucapabilitiesdata/caps_11.0.0_x86_64.xml b/tests/qemucapabilitiesdata/caps_11.0.0_x86_64.xml
index f5ef2b2e45..6aa17de843 100644
--- a/tests/qemucapabilitiesdata/caps_11.0.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_11.0.0_x86_64.xml
@@ -215,6 +215,7 @@
   <flag name='acpi-generic-initiator'/>
   <flag name='disk-timed-stats'/>
   <flag name='query-accelerators'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>10002050</version>
   <microcodeVersion>43100286</microcodeVersion>
   <package>v10.2.0-476-gcf3e71d8fc</package>
diff --git a/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml b/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
index 1f2e27a218..43c174e0e6 100644
--- a/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
@@ -204,6 +204,7 @@
   <flag name='amd-iommu'/>
   <flag name='usb-bot'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>9000000</version>
   <microcodeVersion>43100245</microcodeVersion>
   <package>v9.0.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_9.1.0_riscv64.xml b/tests/qemucapabilitiesdata/caps_9.1.0_riscv64.xml
index 85c013a724..b5ca67b445 100644
--- a/tests/qemucapabilitiesdata/caps_9.1.0_riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_9.1.0_riscv64.xml
@@ -162,6 +162,7 @@
   <flag name='nvme-ns'/>
   <flag name='usb-bot'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>9001000</version>
   <microcodeVersion>0</microcodeVersion>
   <package>v9.1.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_9.1.0_s390x.xml b/tests/qemucapabilitiesdata/caps_9.1.0_s390x.xml
index b961f79808..78b7493b53 100644
--- a/tests/qemucapabilitiesdata/caps_9.1.0_s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_9.1.0_s390x.xml
@@ -126,6 +126,7 @@
   <flag name='nvme'/>
   <flag name='nvme-ns'/>
   <flag name='usb-bot'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>9001000</version>
   <microcodeVersion>39100246</microcodeVersion>
   <package>v9.1.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml b/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
index 35ddf30736..d68bb783e8 100644
--- a/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
@@ -203,6 +203,7 @@
   <flag name='amd-iommu'/>
   <flag name='usb-bot'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>9001000</version>
   <microcodeVersion>43100246</microcodeVersion>
   <package>v9.1.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_9.2.0_aarch64+hvf.xml b/tests/qemucapabilitiesdata/caps_9.2.0_aarch64+hvf.xml
index 79784d553f..9c843f9e5c 100644
--- a/tests/qemucapabilitiesdata/caps_9.2.0_aarch64+hvf.xml
+++ b/tests/qemucapabilitiesdata/caps_9.2.0_aarch64+hvf.xml
@@ -135,6 +135,7 @@
   <flag name='nvme-ns'/>
   <flag name='usb-bot'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>9002002</version>
   <microcodeVersion>61700247</microcodeVersion>
   <package></package>
diff --git a/tests/qemucapabilitiesdata/caps_9.2.0_s390x.xml b/tests/qemucapabilitiesdata/caps_9.2.0_s390x.xml
index e9f79261f7..01fb50038d 100644
--- a/tests/qemucapabilitiesdata/caps_9.2.0_s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_9.2.0_s390x.xml
@@ -129,6 +129,7 @@
   <flag name='nvme'/>
   <flag name='nvme-ns'/>
   <flag name='usb-bot'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>9002000</version>
   <microcodeVersion>39100247</microcodeVersion>
   <package>v9.2.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_9.2.0_x86_64+amdsev.xml b/tests/qemucapabilitiesdata/caps_9.2.0_x86_64+amdsev.xml
index 0e52c3e23d..ac936bc17b 100644
--- a/tests/qemucapabilitiesdata/caps_9.2.0_x86_64+amdsev.xml
+++ b/tests/qemucapabilitiesdata/caps_9.2.0_x86_64+amdsev.xml
@@ -207,6 +207,7 @@
   <flag name='amd-iommu'/>
   <flag name='usb-bot'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>9002000</version>
   <microcodeVersion>43100247</microcodeVersion>
   <package>v9.2.0</package>
diff --git a/tests/qemucapabilitiesdata/caps_9.2.0_x86_64.xml b/tests/qemucapabilitiesdata/caps_9.2.0_x86_64.xml
index 95f8a4d878..fd851d9201 100644
--- a/tests/qemucapabilitiesdata/caps_9.2.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_9.2.0_x86_64.xml
@@ -205,6 +205,7 @@
   <flag name='amd-iommu'/>
   <flag name='usb-bot'/>
   <flag name='acpi-generic-initiator'/>
+  <flag name='virtio-iommu.aw-bits'/>
   <version>9002000</version>
   <microcodeVersion>43100247</microcodeVersion>
   <package>v9.2.0</package>