diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index 342c7aff40..722bf8e77c 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -190,10 +190,10 @@ virDomainPCIAddressBusSetModel(virDomainPCIAddressBusPtr bus,
bus->maxSlot = VIR_PCI_ADDRESS_SLOT_LAST;
break;
case VIR_DOMAIN_CONTROLLER_MODEL_DMI_TO_PCI_BRIDGE:
- /* slots 1 - 31, standard PCI slots,
+ /* slots 0 - 31, standard PCI slots,
* but *not* hot-pluggable */
bus->flags = VIR_PCI_CONNECT_TYPE_PCI;
- bus->minSlot = 1;
+ bus->minSlot = 0;
bus->maxSlot = VIR_PCI_ADDRESS_SLOT_LAST;
break;
case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT_PORT:
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-2.6-virtio-pci-default.args b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-2.6-virtio-pci-default.args
index 93c181db4c..1163245aee 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-2.6-virtio-pci-default.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virt-2.6-virtio-pci-default.args
@@ -22,7 +22,7 @@ QEMU_AUDIO_DRV=none \
-append 'earlyprintk console=ttyAMA0,115200n8 rw root=/dev/vda rootwait' \
-dtb /aarch64.dtb \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1 \
--device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
-device virtio-serial-device,id=virtio-serial0 \
-usb \
-drive file=/aarch64.raw,format=raw,if=none,id=drive-virtio-disk0 \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virtio-pci-default.args b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virtio-pci-default.args
index a7a996e2b0..9aaed4b701 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virtio-pci-default.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virtio-pci-default.args
@@ -22,7 +22,7 @@ QEMU_AUDIO_DRV=none \
-append 'earlyprintk console=ttyAMA0,115200n8 rw root=/dev/vda rootwait' \
-dtb /aarch64.dtb \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1 \
--device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
-device virtio-serial-device,id=virtio-serial0 \
-usb \
-drive file=/aarch64.raw,format=raw,if=none,id=drive-virtio-disk0 \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virtio-pci-manual-addresses.args b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virtio-pci-manual-addresses.args
index e3e962badb..2dfcd1e3f8 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virtio-pci-manual-addresses.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-aarch64-virtio-pci-manual-addresses.args
@@ -22,7 +22,7 @@ QEMU_AUDIO_DRV=none \
-append 'earlyprintk console=ttyAMA0,115200n8 rw root=/dev/vda rootwait' \
-dtb /aarch64.dtb \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1 \
--device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
-device virtio-scsi-pci,id=scsi0,bus=pcie.0,addr=0x3 \
-usb \
-drive file=/aarch64.raw,format=raw,if=none,id=drive-scsi0-0-0-0 \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pcie-root-port.args b/tests/qemuxml2argvdata/qemuxml2argv-pcie-root-port.args
index 7fd84f17ad..8031ebc9ee 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-pcie-root-port.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-pcie-root-port.args
@@ -17,7 +17,7 @@ QEMU_AUDIO_DRV=none \
-no-acpi \
-boot c \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
-device ioh3420,port=0x10,chassis=3,id=pci.3,bus=pcie.0,addr=0x2 \
-device ioh3420,port=0x1a,chassis=40,id=pci.4,bus=pcie.0,addr=0x3 \
-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-sata0-0-0 \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pcie-root.args b/tests/qemuxml2argvdata/qemuxml2argv-pcie-root.args
index 230d13cfe2..d6b139f3d7 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-pcie-root.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-pcie-root.args
@@ -17,4 +17,4 @@ QEMU_AUDIO_DRV=none \
-no-acpi \
-boot c \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-downstream-port.args b/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-downstream-port.args
index 9d55621cfa..d94dc23644 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-downstream-port.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-downstream-port.args
@@ -17,7 +17,7 @@ QEMU_AUDIO_DRV=none \
-no-acpi \
-boot c \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
-device ioh3420,port=0x10,chassis=3,id=pci.3,bus=pcie.0,addr=0x2 \
-device x3130-upstream,id=pci.4,bus=pci.3,addr=0x0 \
-device xio3130-downstream,port=0x0,chassis=5,id=pci.5,bus=pci.4,addr=0x0 \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-upstream-port.args b/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-upstream-port.args
index d8aa44b227..ba2bba7925 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-upstream-port.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-pcie-switch-upstream-port.args
@@ -17,7 +17,7 @@ QEMU_AUDIO_DRV=none \
-no-acpi \
-boot c \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
-device ioh3420,port=0x10,chassis=3,id=pci.3,bus=pcie.0,addr=0x2 \
-device ioh3420,port=0x18,chassis=4,id=pci.4,bus=pcie.0,addr=0x3 \
-device x3130-upstream,id=pci.5,bus=pci.3,addr=0x0 \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pcihole64-q35.args b/tests/qemuxml2argvdata/qemuxml2argv-pcihole64-q35.args
index b6ccda233b..7d3a070a12 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-pcihole64-q35.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-pcihole64-q35.args
@@ -18,7 +18,7 @@ QEMU_AUDIO_DRV=none \
-boot c \
-global q35-pcihost.pci-hole64-size=1048576K \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-sata0-0-0 \
-device ide-drive,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0 \
-vga qxl \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-q35-pm-disable-fallback.args b/tests/qemuxml2argvdata/qemuxml2argv-q35-pm-disable-fallback.args
index e439b499c3..c7eafc515c 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-q35-pm-disable-fallback.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-q35-pm-disable-fallback.args
@@ -19,5 +19,5 @@ QEMU_AUDIO_DRV=none \
-global PIIX4_PM.disable_s4=1 \
-boot n \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
-device virtio-balloon-pci,id=balloon0,bus=pci.2,addr=0x1
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-q35-pm-disable.args b/tests/qemuxml2argvdata/qemuxml2argv-q35-pm-disable.args
index 73cf9678b2..ec908517a3 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-q35-pm-disable.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-q35-pm-disable.args
@@ -19,5 +19,5 @@ QEMU_AUDIO_DRV=none \
-global ICH9-LPC.disable_s4=1 \
-boot n \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
-device virtio-balloon-pci,id=balloon0,bus=pci.2,addr=0x1
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2-multi.args b/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2-multi.args
index 26c4d3c34d..9da845b0c6 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2-multi.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2-multi.args
@@ -17,7 +17,7 @@ QEMU_AUDIO_DRV=none \
-no-acpi \
-boot c \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x0 \
-device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x1d.0x7 \
-device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,\
addr=0x1d \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2-reorder.args b/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2-reorder.args
index ba0e7fa841..bd0cd5561e 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2-reorder.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2-reorder.args
@@ -17,7 +17,7 @@ QEMU_AUDIO_DRV=none \
-no-acpi \
-boot c \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x0 \
-device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x1d.0x7 \
-device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,\
addr=0x1d \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2.args b/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2.args
index 98287e62a6..5cca714b69 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-q35-usb2.args
@@ -17,7 +17,7 @@ QEMU_AUDIO_DRV=none \
-no-acpi \
-boot c \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x0 \
-device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x1d.0x7 \
-device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,\
addr=0x1d \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-q35.args b/tests/qemuxml2argvdata/qemuxml2argv-q35.args
index 98287e62a6..5cca714b69 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-q35.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-q35.args
@@ -17,7 +17,7 @@ QEMU_AUDIO_DRV=none \
-no-acpi \
-boot c \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
--device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x0 \
-device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x1d.0x7 \
-device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,\
addr=0x1d \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-default-q35.args b/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-default-q35.args
index 8cfa37105d..7c33da2420 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-default-q35.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-default-q35.args
@@ -16,6 +16,6 @@ QEMU_AUDIO_DRV=none \
-monitor unix:/tmp/lib/domain--1-q35-test/monitor.sock,server,nowait \
-no-acpi \
-boot c \
--device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x0 \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
-device piix3-usb-uhci,id=usb,bus=pcie.0,addr=0x1
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-explicit-q35.args b/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-explicit-q35.args
index 020f1590ac..d24f9cdb5e 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-explicit-q35.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-usb-controller-explicit-q35.args
@@ -16,6 +16,6 @@ QEMU_AUDIO_DRV=none \
-monitor unix:/tmp/lib/domain--1-q35-test/monitor.sock,server,nowait \
-no-acpi \
-boot c \
--device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x1 \
+-device pci-bridge,chassis_nr=56,id=pci.2,bus=pci.1,addr=0x0 \
-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
-device nec-usb-xhci,id=usb,bus=pcie.0,addr=0x1
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-default.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-default.xml
index 415d041a39..be2e113d2c 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-default.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-default.xml
@@ -40,7 +40,7 @@
-
+
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-manual-addresses.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-manual-addresses.xml
index 0ee40f5eaa..0d69169157 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-manual-addresses.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-manual-addresses.xml
@@ -43,7 +43,7 @@
-
+
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-root-port.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-root-port.xml
index ea61bcf200..a4ff820d94 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-root-port.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-root-port.xml
@@ -27,7 +27,7 @@
-
+
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-root.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-root.xml
index 013cbc44f9..7f2e21a455 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-root.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-root.xml
@@ -25,7 +25,7 @@
-
+
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-switch-downstream-port.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-switch-downstream-port.xml
index 22cfeaa874..beb6ca8cf0 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-switch-downstream-port.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-switch-downstream-port.xml
@@ -27,7 +27,7 @@
-
+
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-switch-upstream-port.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-switch-upstream-port.xml
index 813ba97487..53e10d0c70 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-switch-upstream-port.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcie-switch-upstream-port.xml
@@ -27,7 +27,7 @@
-
+
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcihole64-q35.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcihole64-q35.xml
index 7e9a36690e..dad7d1a4fb 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcihole64-q35.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pcihole64-q35.xml
@@ -29,7 +29,7 @@
-
+
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2-multi.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2-multi.xml
index 35e8fed43b..06c0699ee5 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2-multi.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2-multi.xml
@@ -27,7 +27,7 @@
-
+
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2-reorder.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2-reorder.xml
index 914c7f8354..100709577d 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2-reorder.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2-reorder.xml
@@ -27,7 +27,7 @@
-
+
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2.xml
index 3fd2c0e9af..58c7fab396 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-usb2.xml
@@ -27,7 +27,7 @@
-
+
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35.xml
index 3fd2c0e9af..58c7fab396 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35.xml
@@ -27,7 +27,7 @@
-
+