diff --git a/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-pc-4.2.x86_64-latest.args b/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-pc-4.2.x86_64-latest.args
new file mode 100644
index 0000000000000000000000000000000000000000..c7bef11f22abfc3ab80102b7113a41e96cb824d3
--- /dev/null
+++ b/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-pc-4.2.x86_64-latest.args
@@ -0,0 +1,36 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-guest \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-guest/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-guest/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-guest/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-x86_64 \
+-name guest=guest,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,\
+file=/tmp/lib/domain--1-guest/master-key.aes \
+-machine pc-i440fx-4.2,accel=kvm,usb=off,dump-guest-core=off \
+-m 4096 \
+-overcommit mem-lock=off \
+-smp 4,sockets=4,cores=1,threads=1 \
+-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
+-drive file=/var/lib/libvirt/images/guest.qcow2,format=qcow2,if=none,\
+id=drive-virtio-disk0 \
+-device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x2,drive=drive-virtio-disk0,\
+id=virtio-disk0,bootindex=1 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
+resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-pc-4.2.xml b/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-pc-4.2.xml
new file mode 100644
index 0000000000000000000000000000000000000000..ce432ef52f41ac98f10a67e71ad309cee3965a6c
--- /dev/null
+++ b/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-pc-4.2.xml
@@ -0,0 +1,24 @@
+<domain type='kvm'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory>4194304</memory>
+  <currentMemory>4194304</currentMemory>
+  <vcpu>4</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc-i440fx-4.2'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+  </features>
+  <clock offset='utc'/>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/libvirt/images/guest.qcow2'/>
+      <target dev='vda' bus='virtio'/>
+    </disk>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-q35-4.2.x86_64-latest.args b/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-q35-4.2.x86_64-latest.args
new file mode 100644
index 0000000000000000000000000000000000000000..c65d29fc32ad292cd6542f02a26196214a845fa5
--- /dev/null
+++ b/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-q35-4.2.x86_64-latest.args
@@ -0,0 +1,41 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-guest \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-guest/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-guest/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-guest/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-x86_64 \
+-name guest=guest,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,\
+file=/tmp/lib/domain--1-guest/master-key.aes \
+-machine pc-q35-4.2,accel=kvm,usb=off,dump-guest-core=off \
+-m 4096 \
+-overcommit mem-lock=off \
+-smp 4,sockets=4,cores=1,threads=1 \
+-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-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-root-port,port=0xa,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x2 \
+-device pcie-root-port,port=0xb,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x3 \
+-device qemu-xhci,id=usb,bus=pci.1,addr=0x0 \
+-drive file=/var/lib/libvirt/images/guest.qcow2,format=qcow2,if=none,\
+id=drive-virtio-disk0 \
+-device virtio-blk-pci,scsi=off,bus=pci.2,addr=0x0,drive=drive-virtio-disk0,\
+id=virtio-disk0,bootindex=1 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.3,addr=0x0 \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
+resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-q35-4.2.xml b/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-q35-4.2.xml
new file mode 100644
index 0000000000000000000000000000000000000000..bf2678e674ea79d89b92acdb57071e6f58a06f35
--- /dev/null
+++ b/tests/qemuxml2argvdata/x86_64-default-cpu-kvm-q35-4.2.xml
@@ -0,0 +1,24 @@
+<domain type='kvm'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory>4194304</memory>
+  <currentMemory>4194304</currentMemory>
+  <vcpu>4</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc-q35-4.2'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+  </features>
+  <clock offset='utc'/>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/libvirt/images/guest.qcow2'/>
+      <target dev='vda' bus='virtio'/>
+    </disk>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-pc-4.2.x86_64-latest.args b/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-pc-4.2.x86_64-latest.args
new file mode 100644
index 0000000000000000000000000000000000000000..1c233243ad9f6570b40d0b91ba4a3a2806a3fc07
--- /dev/null
+++ b/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-pc-4.2.x86_64-latest.args
@@ -0,0 +1,36 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-guest \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-guest/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-guest/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-guest/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-x86_64 \
+-name guest=guest,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,\
+file=/tmp/lib/domain--1-guest/master-key.aes \
+-machine pc-i440fx-4.2,accel=tcg,usb=off,dump-guest-core=off \
+-m 4096 \
+-overcommit mem-lock=off \
+-smp 4,sockets=4,cores=1,threads=1 \
+-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
+-drive file=/var/lib/libvirt/images/guest.qcow2,format=qcow2,if=none,\
+id=drive-virtio-disk0 \
+-device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x2,drive=drive-virtio-disk0,\
+id=virtio-disk0,bootindex=1 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
+resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-pc-4.2.xml b/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-pc-4.2.xml
new file mode 100644
index 0000000000000000000000000000000000000000..8e77a3ad9239f9ffde9d8c807a5248189c60e172
--- /dev/null
+++ b/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-pc-4.2.xml
@@ -0,0 +1,24 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory>4194304</memory>
+  <currentMemory>4194304</currentMemory>
+  <vcpu>4</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc-i440fx-4.2'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+  </features>
+  <clock offset='utc'/>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/libvirt/images/guest.qcow2'/>
+      <target dev='vda' bus='virtio'/>
+    </disk>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-q35-4.2.x86_64-latest.args b/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-q35-4.2.x86_64-latest.args
new file mode 100644
index 0000000000000000000000000000000000000000..505eeb44b3fa50d6064f34e030f3ea070b274eb5
--- /dev/null
+++ b/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-q35-4.2.x86_64-latest.args
@@ -0,0 +1,41 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-guest \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-guest/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-guest/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-guest/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-x86_64 \
+-name guest=guest,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,\
+file=/tmp/lib/domain--1-guest/master-key.aes \
+-machine pc-q35-4.2,accel=tcg,usb=off,dump-guest-core=off \
+-m 4096 \
+-overcommit mem-lock=off \
+-smp 4,sockets=4,cores=1,threads=1 \
+-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-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-root-port,port=0xa,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x2 \
+-device pcie-root-port,port=0xb,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x3 \
+-device qemu-xhci,id=usb,bus=pci.1,addr=0x0 \
+-drive file=/var/lib/libvirt/images/guest.qcow2,format=qcow2,if=none,\
+id=drive-virtio-disk0 \
+-device virtio-blk-pci,scsi=off,bus=pci.2,addr=0x0,drive=drive-virtio-disk0,\
+id=virtio-disk0,bootindex=1 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.3,addr=0x0 \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
+resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-q35-4.2.xml b/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-q35-4.2.xml
new file mode 100644
index 0000000000000000000000000000000000000000..4e3b3418009fe34d3753b19e6924c1b8fca93dcf
--- /dev/null
+++ b/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-q35-4.2.xml
@@ -0,0 +1,24 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory>4194304</memory>
+  <currentMemory>4194304</currentMemory>
+  <vcpu>4</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc-q35-4.2'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+  </features>
+  <clock offset='utc'/>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/libvirt/images/guest.qcow2'/>
+      <target dev='vda' bus='virtio'/>
+    </disk>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 0ef567545877183b75ee20012026362015eafc2d..07e711840df9cc64e43721a4cc418c974bfd1100 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -3028,6 +3028,10 @@ mymain(void)
     DO_TEST_CAPS_ARCH_LATEST("ppc64-default-cpu-tcg-pseries-4.2", "ppc64");
     DO_TEST_CAPS_ARCH_LATEST("s390-default-cpu-kvm-ccw-virtio-4.2", "s390x");
     DO_TEST_CAPS_ARCH_LATEST("s390-default-cpu-tcg-ccw-virtio-4.2", "s390x");
+    DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-kvm-pc-4.2", "x86_64");
+    DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-tcg-pc-4.2", "x86_64");
+    DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-kvm-q35-4.2", "x86_64");
+    DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-tcg-q35-4.2", "x86_64");
 
     if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
         virFileDeleteTree(fakerootdir);
diff --git a/tests/qemuxml2xmloutdata/x86_64-default-cpu-kvm-pc-4.2.x86_64-latest.xml b/tests/qemuxml2xmloutdata/x86_64-default-cpu-kvm-pc-4.2.x86_64-latest.xml
new file mode 100644
index 0000000000000000000000000000000000000000..1f24dee8e7bed2e016330778b485d3a045a8e76b
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/x86_64-default-cpu-kvm-pc-4.2.x86_64-latest.xml
@@ -0,0 +1,37 @@
+<domain type='kvm'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>4194304</memory>
+  <currentMemory unit='KiB'>4194304</currentMemory>
+  <vcpu placement='static'>4</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc-i440fx-4.2'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/libvirt/images/guest.qcow2'/>
+      <target dev='vda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </disk>
+    <controller type='usb' index='0' model='piix3-uhci'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='virtio'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </memballoon>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/x86_64-default-cpu-kvm-q35-4.2.x86_64-latest.xml b/tests/qemuxml2xmloutdata/x86_64-default-cpu-kvm-q35-4.2.x86_64-latest.xml
new file mode 100644
index 0000000000000000000000000000000000000000..39a7013b67198356d201ebdd4afcacac47f3f3bf
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/x86_64-default-cpu-kvm-q35-4.2.x86_64-latest.xml
@@ -0,0 +1,60 @@
+<domain type='kvm'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>4194304</memory>
+  <currentMemory unit='KiB'>4194304</currentMemory>
+  <vcpu placement='static'>4</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc-q35-4.2'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/libvirt/images/guest.qcow2'/>
+      <target dev='vda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
+    </disk>
+    <controller type='usb' index='0' model='qemu-xhci'>
+      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
+    </controller>
+    <controller type='sata' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
+    </controller>
+    <controller type='pci' index='0' model='pcie-root'/>
+    <controller type='pci' index='1' model='pcie-root-port'>
+      <model name='pcie-root-port'/>
+      <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-root-port'>
+      <model name='pcie-root-port'/>
+      <target chassis='3' port='0xa'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='pci' index='4' model='pcie-root-port'>
+      <model name='pcie-root-port'/>
+      <target chassis='4' port='0xb'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x3'/>
+    </controller>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='virtio'>
+      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
+    </memballoon>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/x86_64-default-cpu-tcg-pc-4.2.x86_64-latest.xml b/tests/qemuxml2xmloutdata/x86_64-default-cpu-tcg-pc-4.2.x86_64-latest.xml
new file mode 100644
index 0000000000000000000000000000000000000000..b45ad4c051be074e4c6e609e6f10856f0e95997c
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/x86_64-default-cpu-tcg-pc-4.2.x86_64-latest.xml
@@ -0,0 +1,37 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>4194304</memory>
+  <currentMemory unit='KiB'>4194304</currentMemory>
+  <vcpu placement='static'>4</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc-i440fx-4.2'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/libvirt/images/guest.qcow2'/>
+      <target dev='vda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </disk>
+    <controller type='usb' index='0' model='piix3-uhci'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='virtio'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </memballoon>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/x86_64-default-cpu-tcg-q35-4.2.x86_64-latest.xml b/tests/qemuxml2xmloutdata/x86_64-default-cpu-tcg-q35-4.2.x86_64-latest.xml
new file mode 100644
index 0000000000000000000000000000000000000000..c6a85977e9f64035b1e1cbb93e47ac4b60c73e64
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/x86_64-default-cpu-tcg-q35-4.2.x86_64-latest.xml
@@ -0,0 +1,60 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>4194304</memory>
+  <currentMemory unit='KiB'>4194304</currentMemory>
+  <vcpu placement='static'>4</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc-q35-4.2'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='/var/lib/libvirt/images/guest.qcow2'/>
+      <target dev='vda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
+    </disk>
+    <controller type='usb' index='0' model='qemu-xhci'>
+      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
+    </controller>
+    <controller type='sata' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
+    </controller>
+    <controller type='pci' index='0' model='pcie-root'/>
+    <controller type='pci' index='1' model='pcie-root-port'>
+      <model name='pcie-root-port'/>
+      <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-root-port'>
+      <model name='pcie-root-port'/>
+      <target chassis='3' port='0xa'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='pci' index='4' model='pcie-root-port'>
+      <model name='pcie-root-port'/>
+      <target chassis='4' port='0xb'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x3'/>
+    </controller>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='virtio'>
+      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
+    </memballoon>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 132cc52687335f7622eceb35d9ec26344bf81ee6..ed53ddc8c693e52392d07cd50eea4fc8f5d54a71 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -1351,6 +1351,10 @@ mymain(void)
     DO_TEST_CAPS_ARCH_LATEST("ppc64-default-cpu-tcg-pseries-4.2", "ppc64");
     DO_TEST_CAPS_ARCH_LATEST("s390-default-cpu-kvm-ccw-virtio-4.2", "s390x");
     DO_TEST_CAPS_ARCH_LATEST("s390-default-cpu-tcg-ccw-virtio-4.2", "s390x");
+    DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-kvm-pc-4.2", "x86_64");
+    DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-tcg-pc-4.2", "x86_64");
+    DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-kvm-q35-4.2", "x86_64");
+    DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-tcg-q35-4.2", "x86_64");
 
     if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
         virFileDeleteTree(fakerootdir);