diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index b1708b7f06d6749ac3a5b8e599d6bf15a5c9c176..b585f3c4fdbda1cb21f84cdae57a72f41123fe87 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -497,8 +497,12 @@ qemuBuildVirtioDevStr(virBufferPtr buf,
             has_ntmodel = device.data.rng->model == VIR_DOMAIN_RNG_MODEL_VIRTIO_NON_TRANSITIONAL;
             break;
 
-        case VIR_DOMAIN_DEVICE_LEASE:
         case VIR_DOMAIN_DEVICE_FS:
+            has_tmodel = device.data.fs->model == VIR_DOMAIN_FS_MODEL_VIRTIO_TRANSITIONAL;
+            has_ntmodel = device.data.fs->model == VIR_DOMAIN_FS_MODEL_VIRTIO_NON_TRANSITIONAL;
+            break;
+
+        case VIR_DOMAIN_DEVICE_LEASE:
         case VIR_DOMAIN_DEVICE_INPUT:
         case VIR_DOMAIN_DEVICE_SOUND:
         case VIR_DOMAIN_DEVICE_VIDEO:
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index e097356327bf760b21556461d3d5455439f7c6b6..71dbf6530ed3ff44c361e9a44f00b76438e6cfcd 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -678,7 +678,18 @@ qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,
 
     case VIR_DOMAIN_DEVICE_FS:
         /* the only type of filesystem so far is virtio-9p-pci */
-        return virtioFlags;
+        switch ((virDomainFSModel) dev->data.fs->model) {
+        case VIR_DOMAIN_FS_MODEL_VIRTIO_TRANSITIONAL:
+            /* Transitional devices only work in conventional PCI slots */
+            return pciFlags;
+        case VIR_DOMAIN_FS_MODEL_VIRTIO:
+        case VIR_DOMAIN_FS_MODEL_VIRTIO_NON_TRANSITIONAL:
+        case VIR_DOMAIN_FS_MODEL_DEFAULT:
+            return virtioFlags;
+        case VIR_DOMAIN_FS_MODEL_LAST:
+            break;
+        }
+        return 0;
 
     case VIR_DOMAIN_DEVICE_NET: {
         virDomainNetDefPtr net = dev->data.net;
diff --git a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-3.1.0.args b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-3.1.0.args
index 824737338a1ff7148e4576bb8961cef251666914..38a9cab5829bb5a7289ba1377afea0c7a768a56b 100644
--- a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-3.1.0.args
+++ b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-3.1.0.args
@@ -34,7 +34,8 @@ addr=0x1 \
 -device virtio-blk-pci,disable-legacy=on,disable-modern=off,scsi=off,bus=pci.3,\
 addr=0x0,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
 -fsdev local,security_model=passthrough,id=fsdev-fs0,path=/export/fs1 \
--device virtio-9p-pci,id=fs0,fsdev=fsdev-fs0,mount_tag=fs1,bus=pci.1,addr=0x0 \
+-device virtio-9p-pci,disable-legacy=on,disable-modern=off,id=fs0,\
+fsdev=fsdev-fs0,mount_tag=fs1,bus=pci.1,addr=0x0 \
 -netdev user,id=hostnet0 \
 -device virtio-net-pci,disable-legacy=on,disable-modern=off,netdev=hostnet0,\
 id=net0,mac=00:11:22:33:44:55,bus=pci.2,addr=0x0 \
diff --git a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
index e454eeadbd2d2d35d24444a53ddf0899f8f8eec6..8c571c04f1aa2b5c50e05b94eaca347db3ac51e3 100644
--- a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
@@ -34,7 +34,8 @@ addr=0x1 \
 -device virtio-blk-pci-non-transitional,scsi=off,bus=pci.3,addr=0x0,\
 drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
 -fsdev local,security_model=passthrough,id=fsdev-fs0,path=/export/fs1 \
--device virtio-9p-pci,id=fs0,fsdev=fsdev-fs0,mount_tag=fs1,bus=pci.1,addr=0x0 \
+-device virtio-9p-pci-non-transitional,id=fs0,fsdev=fsdev-fs0,mount_tag=fs1,\
+bus=pci.1,addr=0x0 \
 -netdev user,id=hostnet0 \
 -device virtio-net-pci-non-transitional,netdev=hostnet0,id=net0,\
 mac=00:11:22:33:44:55,bus=pci.2,addr=0x0 \
diff --git a/tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args b/tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args
index da1ce9e7dc4a4c5aa40c1a369c669217223d403b..796a29044cdaecfae7c2e5abea38e03ce48694ec 100644
--- a/tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args
+++ b/tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args
@@ -25,22 +25,22 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -boot strict=on \
 -device pcie-root-port,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,\
 addr=0x1 \
--device pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
--device pcie-pci-bridge,id=pci.3,bus=pci.1,addr=0x0 \
--device pcie-root-port,port=0xa,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x2 \
+-device pcie-pci-bridge,id=pci.2,bus=pci.1,addr=0x0 \
+-device pcie-root-port,port=0x9,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x1 \
 -drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
 -device virtio-blk-pci,disable-legacy=off,disable-modern=off,scsi=off,\
-bus=pci.3,addr=0x2,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
+bus=pci.2,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
 -fsdev local,security_model=passthrough,id=fsdev-fs0,path=/export/fs1 \
--device virtio-9p-pci,id=fs0,fsdev=fsdev-fs0,mount_tag=fs1,bus=pci.2,addr=0x0 \
+-device virtio-9p-pci,disable-legacy=off,disable-modern=off,id=fs0,\
+fsdev=fsdev-fs0,mount_tag=fs1,bus=pci.2,addr=0x1 \
 -netdev user,id=hostnet0 \
 -device virtio-net-pci,disable-legacy=off,disable-modern=off,netdev=hostnet0,\
-id=net0,mac=00:11:22:33:44:55,bus=pci.3,addr=0x1 \
+id=net0,mac=00:11:22:33:44:55,bus=pci.2,addr=0x2 \
 -device vhost-scsi-pci,disable-legacy=off,disable-modern=off,\
-wwpn=naa.5123456789abcde0,vhostfd=3,id=hostdev0,bus=pci.3,addr=0x3 \
+wwpn=naa.5123456789abcde0,vhostfd=3,id=hostdev0,bus=pci.2,addr=0x4 \
 -object rng-random,id=objrng0,filename=/dev/urandom \
 -device virtio-rng-pci,disable-legacy=off,disable-modern=off,rng=objrng0,\
-id=rng0,bus=pci.3,addr=0x4 \
+id=rng0,bus=pci.2,addr=0x5 \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
 resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
index 43c1cafd4587915596dc2b4e972b069a84a11bd5..eb8da465f66d1af14bf19baee3cd31414cf5ab7c 100644
--- a/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
@@ -25,21 +25,21 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -boot strict=on \
 -device pcie-root-port,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,\
 addr=0x1 \
--device pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
--device pcie-pci-bridge,id=pci.3,bus=pci.1,addr=0x0 \
--device pcie-root-port,port=0xa,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x2 \
+-device pcie-pci-bridge,id=pci.2,bus=pci.1,addr=0x0 \
+-device pcie-root-port,port=0x9,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x1 \
 -drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
--device virtio-blk-pci-transitional,scsi=off,bus=pci.3,addr=0x2,\
+-device virtio-blk-pci-transitional,scsi=off,bus=pci.2,addr=0x3,\
 drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
 -fsdev local,security_model=passthrough,id=fsdev-fs0,path=/export/fs1 \
--device virtio-9p-pci,id=fs0,fsdev=fsdev-fs0,mount_tag=fs1,bus=pci.2,addr=0x0 \
+-device virtio-9p-pci-transitional,id=fs0,fsdev=fsdev-fs0,mount_tag=fs1,\
+bus=pci.2,addr=0x1 \
 -netdev user,id=hostnet0 \
 -device virtio-net-pci-transitional,netdev=hostnet0,id=net0,\
-mac=00:11:22:33:44:55,bus=pci.3,addr=0x1 \
+mac=00:11:22:33:44:55,bus=pci.2,addr=0x2 \
 -device vhost-scsi-pci-transitional,wwpn=naa.5123456789abcde0,vhostfd=3,\
-id=hostdev0,bus=pci.3,addr=0x3 \
+id=hostdev0,bus=pci.2,addr=0x4 \
 -object rng-random,id=objrng0,filename=/dev/urandom \
--device virtio-rng-pci-transitional,rng=objrng0,id=rng0,bus=pci.3,addr=0x4 \
+-device virtio-rng-pci-transitional,rng=objrng0,id=rng0,bus=pci.2,addr=0x5 \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
 resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2xmloutdata/virtio-transitional.xml b/tests/qemuxml2xmloutdata/virtio-transitional.xml
index 6e18c1c3013c181da84a99e7d86794e2babf6cad..334cfaa6e471d54a9d8c30c887441a9535b12d92 100644
--- a/tests/qemuxml2xmloutdata/virtio-transitional.xml
+++ b/tests/qemuxml2xmloutdata/virtio-transitional.xml
@@ -18,7 +18,7 @@
       <driver name='qemu' type='raw'/>
       <source dev='/dev/HostVG/QEMUGuest1'/>
       <target dev='vda' bus='virtio'/>
-      <address type='pci' domain='0x0000' bus='0x03' slot='0x02' function='0x0'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x03' function='0x0'/>
     </disk>
     <controller type='usb' index='0' model='none'/>
     <controller type='sata' index='0'>
@@ -30,40 +30,35 @@
       <target chassis='1' port='0x8'/>
       <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0' multifunction='on'/>
     </controller>
-    <controller type='pci' index='2' model='pcie-root-port'>
-      <model name='pcie-root-port'/>
-      <target chassis='2' port='0x9'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
-    </controller>
-    <controller type='pci' index='3' model='pcie-to-pci-bridge'>
+    <controller type='pci' index='2' model='pcie-to-pci-bridge'>
       <model name='pcie-pci-bridge'/>
       <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
     </controller>
-    <controller type='pci' index='4' model='pcie-root-port'>
+    <controller type='pci' index='3' model='pcie-root-port'>
       <model name='pcie-root-port'/>
-      <target chassis='4' port='0xa'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+      <target chassis='3' port='0x9'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
     </controller>
     <filesystem type='mount' accessmode='passthrough' model='virtio-transitional'>
       <source dir='/export/fs1'/>
       <target dir='fs1'/>
-      <address type='pci' domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/>
     </filesystem>
     <interface type='user'>
       <mac address='00:11:22:33:44:55'/>
       <model type='virtio-transitional'/>
-      <address type='pci' domain='0x0000' bus='0x03' slot='0x01' function='0x0'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x02' function='0x0'/>
     </interface>
     <input type='mouse' bus='ps2'/>
     <input type='keyboard' bus='ps2'/>
     <hostdev mode='subsystem' type='scsi_host' managed='no' model='virtio-transitional'>
       <source protocol='vhost' wwpn='naa.5123456789abcde0'/>
-      <address type='pci' domain='0x0000' bus='0x03' slot='0x03' function='0x0'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x04' function='0x0'/>
     </hostdev>
     <memballoon model='none'/>
     <rng model='virtio-transitional'>
       <backend model='random'>/dev/urandom</backend>
-      <address type='pci' domain='0x0000' bus='0x03' slot='0x04' function='0x0'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x05' function='0x0'/>
     </rng>
   </devices>
 </domain>