diff --git a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64-abi-update.args b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64-abi-update.args
index 5a98a8c586..9b57518fca 100644
--- a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64-abi-update.args
+++ b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64-abi-update.args
@@ -9,13 +9,15 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 /usr/bin/qemu-system-ppc64 \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
--object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
 -machine pseries,usb=off,dump-guest-core=off,nvdimm=on \
 -accel tcg \
+-cpu POWER9 \
 -m size=1048576k,slots=16,maxmem=1099511627776k \
 -overcommit mem-lock=off \
--smp 2,sockets=2,cores=1,threads=1 \
--numa node,nodeid=0,cpus=0-1,mem=1024 \
+-smp 2,sockets=2,dies=1,cores=1,threads=1 \
+-object '{"qom-type":"memory-backend-ram","id":"ram-node0","size":1073741824}' \
+-numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \
 -no-user-config \
@@ -25,7 +27,8 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -rtc base=utc \
 -no-shutdown \
 -boot strict=on \
--object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,prealloc=on,size=537001984 \
--device nvdimm,node=0,label-size=131072,uuid=49545eb3-75e1-2d0a-acdd-f0294406c99e,memdev=memnvdimm0,id=nvdimm0,slot=0 \
+-object '{"qom-type":"memory-backend-file","id":"memnvdimm0","mem-path":"/tmp/nvdimm","prealloc":true,"size":537001984}' \
+-device '{"driver":"nvdimm","node":0,"label-size":131072,"uuid":"49545eb3-75e1-2d0a-acdd-f0294406c99e","memdev":"memnvdimm0","id":"nvdimm0","slot":0}' \
 -audiodev '{"id":"audio1","driver":"none"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64.args b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64.ppc64-latest.args
similarity index 55%
rename from tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64.args
rename to tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64.ppc64-latest.args
index 5a98a8c586..9b57518fca 100644
--- a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64.args
+++ b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64.ppc64-latest.args
@@ -9,13 +9,15 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 /usr/bin/qemu-system-ppc64 \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
--object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
 -machine pseries,usb=off,dump-guest-core=off,nvdimm=on \
 -accel tcg \
+-cpu POWER9 \
 -m size=1048576k,slots=16,maxmem=1099511627776k \
 -overcommit mem-lock=off \
--smp 2,sockets=2,cores=1,threads=1 \
--numa node,nodeid=0,cpus=0-1,mem=1024 \
+-smp 2,sockets=2,dies=1,cores=1,threads=1 \
+-object '{"qom-type":"memory-backend-ram","id":"ram-node0","size":1073741824}' \
+-numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \
 -no-user-config \
@@ -25,7 +27,8 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -rtc base=utc \
 -no-shutdown \
 -boot strict=on \
--object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,prealloc=on,size=537001984 \
--device nvdimm,node=0,label-size=131072,uuid=49545eb3-75e1-2d0a-acdd-f0294406c99e,memdev=memnvdimm0,id=nvdimm0,slot=0 \
+-object '{"qom-type":"memory-backend-file","id":"memnvdimm0","mem-path":"/tmp/nvdimm","prealloc":true,"size":537001984}' \
+-device '{"driver":"nvdimm","node":0,"label-size":131072,"uuid":"49545eb3-75e1-2d0a-acdd-f0294406c99e","memdev":"memnvdimm0","id":"nvdimm0","slot":0}' \
 -audiodev '{"id":"audio1","driver":"none"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/memory-hotplug-ppc64-nonuma-abi-update.args b/tests/qemuxml2argvdata/memory-hotplug-ppc64-nonuma-abi-update.args
index f878de8a91..83bfb1123c 100644
--- a/tests/qemuxml2argvdata/memory-hotplug-ppc64-nonuma-abi-update.args
+++ b/tests/qemuxml2argvdata/memory-hotplug-ppc64-nonuma-abi-update.args
@@ -9,10 +9,12 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 /usr/bin/qemu-system-ppc64 \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
--object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes \
--machine pseries,usb=off,dump-guest-core=off \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine pseries,usb=off,dump-guest-core=off,memory-backend=ppc_spapr.ram \
 -accel kvm \
+-cpu POWER9 \
 -m size=1048576k,slots=16,maxmem=4194304k \
+-object '{"qom-type":"memory-backend-ram","id":"ppc_spapr.ram","size":1073741824}' \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 49545eb3-75e1-2d0a-acdd-f0294406c99e \
@@ -24,9 +26,10 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -rtc base=utc \
 -no-shutdown \
 -boot strict=on \
--object memory-backend-ram,id=memdimm0,size=536870912 \
--device pc-dimm,memdev=memdimm0,id=dimm0,slot=0 \
--object memory-backend-ram,id=memdimm1,size=536870912 \
--device pc-dimm,memdev=memdimm1,id=dimm1,slot=1 \
+-object '{"qom-type":"memory-backend-ram","id":"memdimm0","size":536870912}' \
+-device '{"driver":"pc-dimm","memdev":"memdimm0","id":"dimm0","slot":0}' \
+-object '{"qom-type":"memory-backend-ram","id":"memdimm1","size":536870912}' \
+-device '{"driver":"pc-dimm","memdev":"memdimm1","id":"dimm1","slot":1}' \
 -audiodev '{"id":"audio1","driver":"none"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/memory-hotplug-ppc64-nonuma.args b/tests/qemuxml2argvdata/memory-hotplug-ppc64-nonuma.ppc64-latest.args
similarity index 54%
rename from tests/qemuxml2argvdata/memory-hotplug-ppc64-nonuma.args
rename to tests/qemuxml2argvdata/memory-hotplug-ppc64-nonuma.ppc64-latest.args
index 035377eaf1..6c84ef3b01 100644
--- a/tests/qemuxml2argvdata/memory-hotplug-ppc64-nonuma.args
+++ b/tests/qemuxml2argvdata/memory-hotplug-ppc64-nonuma.ppc64-latest.args
@@ -9,10 +9,12 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 /usr/bin/qemu-system-ppc64 \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
--object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes \
--machine pseries,usb=off,dump-guest-core=off \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine pseries,usb=off,dump-guest-core=off,memory-backend=ppc_spapr.ram \
 -accel kvm \
+-cpu POWER9 \
 -m size=1310720k,slots=16,maxmem=4194304k \
+-object '{"qom-type":"memory-backend-ram","id":"ppc_spapr.ram","size":1342177280}' \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 49545eb3-75e1-2d0a-acdd-f0294406c99e \
@@ -24,9 +26,10 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -rtc base=utc \
 -no-shutdown \
 -boot strict=on \
--object memory-backend-ram,id=memdimm0,size=536870912 \
--device pc-dimm,memdev=memdimm0,id=dimm0,slot=0 \
--object memory-backend-ram,id=memdimm1,size=536870912 \
--device pc-dimm,memdev=memdimm1,id=dimm1,slot=1 \
+-object '{"qom-type":"memory-backend-ram","id":"memdimm0","size":536870912}' \
+-device '{"driver":"pc-dimm","memdev":"memdimm0","id":"dimm0","slot":0}' \
+-object '{"qom-type":"memory-backend-ram","id":"memdimm1","size":536870912}' \
+-device '{"driver":"pc-dimm","memdev":"memdimm1","id":"dimm1","slot":1}' \
 -audiodev '{"id":"audio1","driver":"none"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/ppc64-usb-controller-legacy.args b/tests/qemuxml2argvdata/ppc64-usb-controller-legacy.ppc64-latest.args
similarity index 58%
rename from tests/qemuxml2argvdata/ppc64-usb-controller-legacy.args
rename to tests/qemuxml2argvdata/ppc64-usb-controller-legacy.ppc64-latest.args
index f8e0315fcc..1ce5bd8b71 100644
--- a/tests/qemuxml2argvdata/ppc64-usb-controller-legacy.args
+++ b/tests/qemuxml2argvdata/ppc64-usb-controller-legacy.ppc64-latest.args
@@ -9,10 +9,12 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 /usr/bin/qemu-system-ppc64 \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
--object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes \
--machine pseries,usb=off,dump-guest-core=off \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine pseries,usb=off,dump-guest-core=off,memory-backend=ppc_spapr.ram \
 -accel tcg \
+-cpu POWER9 \
 -m 256 \
+-object '{"qom-type":"memory-backend-ram","id":"ppc_spapr.ram","size":268435456}' \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
@@ -24,7 +26,8 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -rtc base=utc \
 -no-shutdown \
 -boot strict=on \
--usb \
+-device '{"driver":"pci-ohci","id":"usb","bus":"pci.0","addr":"0x1"}' \
 -audiodev '{"id":"audio1","driver":"none"}' \
--device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 \
+-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x6"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/ppc64-usb-controller-qemu-xhci.args b/tests/qemuxml2argvdata/ppc64-usb-controller-qemu-xhci.args
index 607c2f1180..7e5dd0925c 100644
--- a/tests/qemuxml2argvdata/ppc64-usb-controller-qemu-xhci.args
+++ b/tests/qemuxml2argvdata/ppc64-usb-controller-qemu-xhci.args
@@ -9,10 +9,12 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 /usr/bin/qemu-system-ppc64 \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
--object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes \
--machine pseries,usb=off,dump-guest-core=off \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine pseries,usb=off,dump-guest-core=off,memory-backend=ppc_spapr.ram \
 -accel tcg \
+-cpu POWER9 \
 -m 256 \
+-object '{"qom-type":"memory-backend-ram","id":"ppc_spapr.ram","size":268435456}' \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
@@ -24,7 +26,8 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -rtc base=utc \
 -no-shutdown \
 -boot strict=on \
--device qemu-xhci,id=usb,bus=pci.0,addr=0x1 \
+-device '{"driver":"qemu-xhci","id":"usb","bus":"pci.0","addr":"0x1"}' \
 -audiodev '{"id":"audio1","driver":"none"}' \
--device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 \
+-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x6"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/ppc64-usb-controller.args b/tests/qemuxml2argvdata/ppc64-usb-controller.ppc64-latest.args
similarity index 58%
rename from tests/qemuxml2argvdata/ppc64-usb-controller.args
rename to tests/qemuxml2argvdata/ppc64-usb-controller.ppc64-latest.args
index 383058e767..1ce5bd8b71 100644
--- a/tests/qemuxml2argvdata/ppc64-usb-controller.args
+++ b/tests/qemuxml2argvdata/ppc64-usb-controller.ppc64-latest.args
@@ -9,10 +9,12 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 /usr/bin/qemu-system-ppc64 \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
--object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes \
--machine pseries,usb=off,dump-guest-core=off \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine pseries,usb=off,dump-guest-core=off,memory-backend=ppc_spapr.ram \
 -accel tcg \
+-cpu POWER9 \
 -m 256 \
+-object '{"qom-type":"memory-backend-ram","id":"ppc_spapr.ram","size":268435456}' \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
@@ -24,7 +26,8 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -rtc base=utc \
 -no-shutdown \
 -boot strict=on \
--device pci-ohci,id=usb,bus=pci.0,addr=0x1 \
+-device '{"driver":"pci-ohci","id":"usb","bus":"pci.0","addr":"0x1"}' \
 -audiodev '{"id":"audio1","driver":"none"}' \
--device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 \
+-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x6"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index e0d237bb2d..a765de304d 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -2541,14 +2541,10 @@ mymain(void)
     DO_TEST("memory-hotplug", QEMU_CAPS_DEVICE_PC_DIMM);
     DO_TEST("memory-hotplug-dimm", QEMU_CAPS_DEVICE_PC_DIMM);
     DO_TEST_CAPS_LATEST("memory-hotplug-dimm-addr");
-    DO_TEST("memory-hotplug-ppc64-nonuma", QEMU_CAPS_KVM, QEMU_CAPS_DEVICE_PC_DIMM,
-            QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE);
+    DO_TEST_CAPS_ARCH_LATEST("memory-hotplug-ppc64-nonuma", "ppc64");
     DO_TEST_FULL("memory-hotplug-ppc64-nonuma-abi-update", "",
                  ARG_PARSEFLAGS, VIR_DOMAIN_DEF_PARSE_ABI_UPDATE,
-                 ARG_QEMU_CAPS,
-                 QEMU_CAPS_KVM, QEMU_CAPS_DEVICE_PC_DIMM,
-                 QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE,
-                 QEMU_CAPS_LAST,
+                 ARG_CAPS_ARCH, "ppc64", ARG_CAPS_VER, "latest",
                  ARG_END);
     DO_TEST_CAPS_LATEST("memory-hotplug-nvdimm");
     DO_TEST_CAPS_LATEST("memory-hotplug-nvdimm-access");
@@ -2560,14 +2556,10 @@ mymain(void)
     DO_TEST_CAPS_LATEST("memory-hotplug-nvdimm-pmem");
     DO_TEST_CAPS_VER("memory-hotplug-nvdimm-readonly", "5.2.0");
     DO_TEST_CAPS_LATEST("memory-hotplug-nvdimm-readonly");
-    DO_TEST("memory-hotplug-nvdimm-ppc64", QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE,
-                                           QEMU_CAPS_DEVICE_NVDIMM);
+    DO_TEST_CAPS_ARCH_LATEST("memory-hotplug-nvdimm-ppc64", "ppc64");
     DO_TEST_FULL("memory-hotplug-nvdimm-ppc64-abi-update", "",
                  ARG_PARSEFLAGS, VIR_DOMAIN_DEF_PARSE_ABI_UPDATE,
-                 ARG_QEMU_CAPS,
-                 QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE,
-                 QEMU_CAPS_DEVICE_NVDIMM,
-                 QEMU_CAPS_LAST,
+                 ARG_CAPS_ARCH, "ppc64", ARG_CAPS_VER, "latest",
                  ARG_END);
     DO_TEST_CAPS_VER("memory-hotplug-virtio-pmem", "5.2.0");
     DO_TEST_CAPS_LATEST("memory-hotplug-virtio-pmem");
@@ -2622,19 +2614,11 @@ mymain(void)
 
     DO_TEST_CAPS_LATEST("input-linux");
 
-    DO_TEST("ppc64-usb-controller",
-            QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE,
-            QEMU_CAPS_PCI_OHCI);
-    DO_TEST("ppc64-usb-controller-legacy",
-            QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE,
-            QEMU_CAPS_PIIX3_USB_UHCI);
+    DO_TEST_CAPS_ARCH_LATEST("ppc64-usb-controller", "ppc64");
+    DO_TEST_CAPS_ARCH_LATEST("ppc64-usb-controller-legacy", "ppc64");
     DO_TEST_FULL("ppc64-usb-controller-qemu-xhci", "",
                  ARG_PARSEFLAGS, VIR_DOMAIN_DEF_PARSE_ABI_UPDATE,
-                 ARG_QEMU_CAPS,
-                 QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE,
-                 QEMU_CAPS_NEC_USB_XHCI,
-                 QEMU_CAPS_DEVICE_QEMU_XHCI,
-                 QEMU_CAPS_LAST,
+                 ARG_CAPS_ARCH, "ppc64", ARG_CAPS_VER, "latest",
                  ARG_END);
 
     DO_TEST_PARSE_ERROR("ppc64-tpmproxy-double",