diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index a5ff7695c3..f67176fbfd 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1608,6 +1608,7 @@ qemuBuildDiskDeviceProps(const virDomainDef *def,
     g_autofree char *chardev = NULL;
     g_autofree char *drive = NULL;
     unsigned int bootindex = 0;
+    const char *bootLoadparm = NULL;
     unsigned int logical_block_size = disk->blockio.logical_block_size;
     unsigned int physical_block_size = disk->blockio.physical_block_size;
     unsigned int discard_granularity = disk->blockio.discard_granularity;
@@ -1746,9 +1747,13 @@ qemuBuildDiskDeviceProps(const virDomainDef *def,
     }
 
     /* bootindex for floppies is configured via the fdc controller */
-    if (disk->device != VIR_DOMAIN_DISK_DEVICE_FLOPPY)
+    if (disk->device != VIR_DOMAIN_DISK_DEVICE_FLOPPY) {
         bootindex = disk->info.effectiveBootIndex;
 
+        if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_CCW_DEVICE_LOADPARM))
+            bootLoadparm = disk->info.loadparm;
+    }
+
     if (disk->wwn) {
         unsigned long long w = 0;
 
@@ -1791,6 +1796,7 @@ qemuBuildDiskDeviceProps(const virDomainDef *def,
                               "S:chardev", chardev,
                               "s:id", disk->info.alias,
                               "p:bootindex", bootindex,
+                              "S:loadparm", bootLoadparm,
                               "p:logical_block_size", logical_block_size,
                               "p:physical_block_size", physical_block_size,
                               "p:discard_granularity", discard_granularity,
@@ -3616,6 +3622,7 @@ qemuBuildNicDevProps(virDomainDef *def,
     g_autoptr(virJSONValue) props = NULL;
     char macaddr[VIR_MAC_STRING_BUFLEN];
     g_autofree char *netdev = g_strdup_printf("host%s", net->info.alias);
+    const char *bootLoadparm = NULL;
 
     if (virDomainNetIsVirtioModel(net)) {
         const char *tx = NULL;
@@ -3701,11 +3708,15 @@ qemuBuildNicDevProps(virDomainDef *def,
 
     virMacAddrFormat(&net->mac, macaddr);
 
+    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_CCW_DEVICE_LOADPARM))
+        bootLoadparm = net->info.loadparm;
+
     if (virJSONValueObjectAdd(&props,
                               "s:netdev", netdev,
                               "s:id", net->info.alias,
                               "s:mac", macaddr,
                               "p:bootindex", net->info.effectiveBootIndex,
+                              "S:loadparm", bootLoadparm,
                               NULL) < 0)
         return NULL;
 
@@ -4751,15 +4762,21 @@ qemuBuildSCSIVHostHostdevDevProps(const virDomainDef *def,
 virJSONValue *
 qemuBuildSCSIHostdevDevProps(const virDomainDef *def,
                              virDomainHostdevDef *dev,
-                             const char *backendAlias)
+                             const char *backendAlias,
+                             virQEMUCaps *qemuCaps)
 {
+    const char *bootLoadparm = NULL;
     g_autoptr(virJSONValue) props = NULL;
 
+    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_CCW_DEVICE_LOADPARM))
+        bootLoadparm = dev->info->loadparm;
+
     if (virJSONValueObjectAdd(&props,
                               "s:driver", "scsi-generic",
                               "s:drive", backendAlias,
                               "s:id", dev->info->alias,
                               "p:bootindex", dev->info->bootIndex,
+                              "S:loadparm", bootLoadparm,
                               NULL) < 0)
         return NULL;
 
@@ -4840,16 +4857,21 @@ qemuBuildHostdevMdevModelTypeString(virDomainHostdevSubsysMediatedDev *mdev)
 
 virJSONValue *
 qemuBuildHostdevMediatedDevProps(const virDomainDef *def,
-                                 virDomainHostdevDef *dev)
+                                 virDomainHostdevDef *dev,
+                                 virQEMUCaps *qemuCaps)
 {
     g_autoptr(virJSONValue) props = NULL;
     virDomainHostdevSubsysMediatedDev *mdevsrc = &dev->source.subsys.u.mdev;
     g_autofree char *mdevPath = NULL;
+    const char *bootLoadparm = NULL;
     /* 'ramfb' property must be omitted unless it's to be enabled */
     bool ramfb = mdevsrc->ramfb == VIR_TRISTATE_SWITCH_ON;
 
     mdevPath = virMediatedDeviceGetSysfsPath(mdevsrc->uuidstr);
 
+    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_CCW_DEVICE_LOADPARM))
+        bootLoadparm = dev->info->loadparm;
+
     if (virJSONValueObjectAdd(&props,
                               "s:driver", qemuBuildHostdevMdevModelTypeString(mdevsrc),
                               "s:id", dev->info->alias,
@@ -4857,6 +4879,7 @@ qemuBuildHostdevMediatedDevProps(const virDomainDef *def,
                               "S:display", qemuOnOffAuto(mdevsrc->display),
                               "B:ramfb", ramfb,
                               "p:bootindex", dev->info->bootIndex,
+                              "S:loadparm", bootLoadparm,
                               NULL) < 0)
         return NULL;
 
@@ -4955,7 +4978,7 @@ qemuBuildHostdevSCSICommandLine(virCommand *cmd,
     if (qemuBuildBlockStorageSourceAttachDataCommandline(cmd, data, qemuCaps) < 0)
         return -1;
 
-    if (!(devprops = qemuBuildSCSIHostdevDevProps(def, hostdev, backendAlias)))
+    if (!(devprops = qemuBuildSCSIHostdevDevProps(def, hostdev, backendAlias, qemuCaps)))
         return -1;
 
     if (qemuBuildDeviceCommandlineFromJSON(cmd, devprops, def, qemuCaps) < 0)
@@ -5054,7 +5077,7 @@ qemuBuildHostdevCommandLine(virCommand *cmd,
                 return -1;
             }
 
-            if (!(devprops = qemuBuildHostdevMediatedDevProps(def, hostdev)))
+            if (!(devprops = qemuBuildHostdevMediatedDevProps(def, hostdev, qemuCaps)))
                 return -1;
 
             if (qemuBuildDeviceCommandlineFromJSON(cmd, devprops, def, qemuCaps) < 0)
@@ -6879,7 +6902,8 @@ qemuBuildMachineCommandLine(virCommand *cmd,
         virBufferAsprintf(&buf, ",max-cpu-compat=%s", cpu->model);
     }
 
-    qemuAppendLoadparmMachineParm(&buf, def);
+    if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_CCW_DEVICE_LOADPARM))
+        qemuAppendLoadparmMachineParm(&buf, def);
 
     if (def->sec) {
         switch (def->sec->sectype) {
diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h
index 309e566f6c..befc3f4ef9 100644
--- a/src/qemu/qemu_command.h
+++ b/src/qemu/qemu_command.h
@@ -179,7 +179,8 @@ qemuBuildUSBHostdevDevProps(const virDomainDef *def,
 virJSONValue *
 qemuBuildSCSIHostdevDevProps(const virDomainDef *def,
                              virDomainHostdevDef *dev,
-                             const char *backendAlias);
+                             const char *backendAlias,
+                             virQEMUCaps *qemuCaps);
 
 qemuBlockStorageSourceAttachData *
 qemuBuildHostdevSCSIAttachPrepare(virDomainHostdevDef *hostdev,
@@ -197,7 +198,8 @@ qemuBuildSCSIVHostHostdevDevProps(const virDomainDef *def,
 
 virJSONValue *
 qemuBuildHostdevMediatedDevProps(const virDomainDef *def,
-                                 virDomainHostdevDef *dev);
+                                 virDomainHostdevDef *dev,
+                                 virQEMUCaps *qemuCaps);
 
 virJSONValue *
 qemuBuildRedirdevDevProps(const virDomainDef *def,
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 1a7b69e5bb..5db72ef634 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -2541,7 +2541,8 @@ qemuDomainAttachHostSCSIDevice(virQEMUDriver *driver,
                                                    priv->qemuCaps)))
         goto cleanup;
 
-    if (!(devprops = qemuBuildSCSIHostdevDevProps(vm->def, hostdev, backendalias)))
+    if (!(devprops = qemuBuildSCSIHostdevDevProps(vm->def, hostdev, backendalias,
+                                                  priv->qemuCaps)))
         goto cleanup;
 
     VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs + 1);
@@ -2761,7 +2762,8 @@ qemuDomainAttachMediatedDevice(virQEMUDriver *driver,
 
     qemuAssignDeviceHostdevAlias(vm->def, &hostdev->info->alias, -1);
 
-    if (!(devprops = qemuBuildHostdevMediatedDevProps(vm->def, hostdev)))
+    if (!(devprops = qemuBuildHostdevMediatedDevProps(vm->def, hostdev,
+                                                      priv->qemuCaps)))
         goto cleanup;
 
     VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs + 1);
diff --git a/tests/qemuxmlconfdata/machine-loadparm-hostdev.s390x-9.1.0.args b/tests/qemuxmlconfdata/machine-loadparm-hostdev.s390x-9.1.0.args
new file mode 100644
index 0000000000..0a025e6335
--- /dev/null
+++ b/tests/qemuxmlconfdata/machine-loadparm-hostdev.s390x-9.1.0.args
@@ -0,0 +1,33 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-s390x \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine s390-ccw-virtio-9.1,usb=off,dump-guest-core=off,memory-backend=s390.ram,loadparm=2 \
+-accel tcg \
+-cpu qemu \
+-m size=524288k \
+-object '{"qom-type":"memory-backend-ram","id":"s390.ram","size":536870912}' \
+-overcommit mem-lock=off \
+-smp 2,sockets=2,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-device '{"driver":"vfio-ccw","id":"hostdev0","sysfsdev":"/sys/bus/mdev/devices/90c6c135-ad44-41d0-b1b7-bae47de48627","bootindex":1,"devno":"fe.0.0000"}' \
+-device '{"driver":"virtio-balloon-ccw","id":"balloon0","devno":"fe.0.0001"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxmlconfdata/machine-loadparm-hostdev.s390x-9.1.0.xml b/tests/qemuxmlconfdata/machine-loadparm-hostdev.s390x-9.1.0.xml
new file mode 100644
index 0000000000..119ae6b0fa
--- /dev/null
+++ b/tests/qemuxmlconfdata/machine-loadparm-hostdev.s390x-9.1.0.xml
@@ -0,0 +1,33 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>524288</memory>
+  <currentMemory unit='KiB'>524288</currentMemory>
+  <vcpu placement='static'>2</vcpu>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio-9.1'>hvm</type>
+  </os>
+  <cpu mode='custom' match='exact' check='none'>
+    <model fallback='forbid'>qemu</model>
+  </cpu>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-s390x</emulator>
+    <controller type='pci' index='0' model='pci-root'/>
+    <audio id='1' type='none'/>
+    <hostdev mode='subsystem' type='mdev' managed='no' model='vfio-ccw'>
+      <source>
+        <address uuid='90c6c135-ad44-41d0-b1b7-bae47de48627'/>
+      </source>
+      <boot order='1' loadparm='2'/>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/>
+    </hostdev>
+    <memballoon model='virtio'>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0001'/>
+    </memballoon>
+    <panic model='s390'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxmlconfdata/machine-loadparm-hostdev.s390x-latest.args b/tests/qemuxmlconfdata/machine-loadparm-hostdev.s390x-latest.args
index 3580db8e21..39f77c14e7 100644
--- a/tests/qemuxmlconfdata/machine-loadparm-hostdev.s390x-latest.args
+++ b/tests/qemuxmlconfdata/machine-loadparm-hostdev.s390x-latest.args
@@ -10,7 +10,7 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
 -object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
--machine s390-ccw-virtio,usb=off,dump-guest-core=off,memory-backend=s390.ram,loadparm=2 \
+-machine s390-ccw-virtio,usb=off,dump-guest-core=off,memory-backend=s390.ram \
 -accel tcg \
 -cpu qemu \
 -m size=524288k \
@@ -27,7 +27,7 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -no-shutdown \
 -boot strict=on \
 -audiodev '{"id":"audio1","driver":"none"}' \
--device '{"driver":"vfio-ccw","id":"hostdev0","sysfsdev":"/sys/bus/mdev/devices/90c6c135-ad44-41d0-b1b7-bae47de48627","bootindex":1,"devno":"fe.0.0000"}' \
+-device '{"driver":"vfio-ccw","id":"hostdev0","sysfsdev":"/sys/bus/mdev/devices/90c6c135-ad44-41d0-b1b7-bae47de48627","bootindex":1,"loadparm":"2","devno":"fe.0.0000"}' \
 -device '{"driver":"virtio-balloon-ccw","id":"balloon0","devno":"fe.0.0001"}' \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxmlconfdata/machine-loadparm-multiple-disks-nets-s390.s390x-9.1.0.args b/tests/qemuxmlconfdata/machine-loadparm-multiple-disks-nets-s390.s390x-9.1.0.args
new file mode 100644
index 0000000000..02c0612440
--- /dev/null
+++ b/tests/qemuxmlconfdata/machine-loadparm-multiple-disks-nets-s390.s390x-9.1.0.args
@@ -0,0 +1,40 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-s390x \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine s390-ccw-virtio-9.1,usb=off,dump-guest-core=off,memory-backend=s390.ram,loadparm=SYSTEM1 \
+-accel tcg \
+-cpu qemu \
+-m size=219136k \
+-object '{"qom-type":"memory-backend-ram","id":"s390.ram","size":224395264}' \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-2-storage","read-only":false}' \
+-device '{"driver":"virtio-blk-ccw","devno":"fe.0.0002","drive":"libvirt-2-storage","id":"virtio-disk0","bootindex":1}' \
+-blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest2","node-name":"libvirt-1-storage","read-only":false}' \
+-device '{"driver":"virtio-blk-ccw","devno":"fe.0.0003","drive":"libvirt-1-storage","id":"virtio-disk1","bootindex":3}' \
+-netdev '{"type":"user","id":"hostnet0"}' \
+-device '{"driver":"virtio-net-ccw","netdev":"hostnet0","id":"net0","mac":"00:11:22:33:44:54","bootindex":2,"devno":"fe.0.0000"}' \
+-netdev '{"type":"user","id":"hostnet1"}' \
+-device '{"driver":"virtio-net-ccw","netdev":"hostnet1","id":"net1","mac":"00:11:22:33:42:36","devno":"fe.0.0004"}' \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-device '{"driver":"virtio-balloon-ccw","id":"balloon0","devno":"fe.0.0001"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxmlconfdata/machine-loadparm-multiple-disks-nets-s390.s390x-9.1.0.xml b/tests/qemuxmlconfdata/machine-loadparm-multiple-disks-nets-s390.s390x-9.1.0.xml
new file mode 100644
index 0000000000..9e108062ce
--- /dev/null
+++ b/tests/qemuxmlconfdata/machine-loadparm-multiple-disks-nets-s390.s390x-9.1.0.xml
@@ -0,0 +1,51 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio-9.1'>hvm</type>
+  </os>
+  <cpu mode='custom' match='exact' check='none'>
+    <model fallback='forbid'>qemu</model>
+  </cpu>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-s390x</emulator>
+    <disk type='block' device='disk'>
+      <driver name='qemu' type='raw'/>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='virtio'/>
+      <boot order='1' loadparm='SYSTEM1'/>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0002'/>
+    </disk>
+    <disk type='block' device='disk'>
+      <driver name='qemu' type='raw'/>
+      <source dev='/dev/HostVG/QEMUGuest2'/>
+      <target dev='hdb' bus='virtio'/>
+      <boot order='3' loadparm='3'/>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0003'/>
+    </disk>
+    <controller type='pci' index='0' model='pci-root'/>
+    <interface type='user'>
+      <mac address='00:11:22:33:44:54'/>
+      <model type='virtio'/>
+      <boot order='2' loadparm='2.LP'/>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/>
+    </interface>
+    <interface type='user'>
+      <mac address='00:11:22:33:42:36'/>
+      <model type='virtio'/>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0004'/>
+    </interface>
+    <audio id='1' type='none'/>
+    <memballoon model='virtio'>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0001'/>
+    </memballoon>
+    <panic model='s390'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxmlconfdata/machine-loadparm-multiple-disks-nets-s390.s390x-latest.args b/tests/qemuxmlconfdata/machine-loadparm-multiple-disks-nets-s390.s390x-latest.args
index 411b62f3ee..34f148e430 100644
--- a/tests/qemuxmlconfdata/machine-loadparm-multiple-disks-nets-s390.s390x-latest.args
+++ b/tests/qemuxmlconfdata/machine-loadparm-multiple-disks-nets-s390.s390x-latest.args
@@ -10,7 +10,7 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
 -object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
--machine s390-ccw-virtio,usb=off,dump-guest-core=off,memory-backend=s390.ram,loadparm=SYSTEM1 \
+-machine s390-ccw-virtio,usb=off,dump-guest-core=off,memory-backend=s390.ram \
 -accel tcg \
 -cpu qemu \
 -m size=219136k \
@@ -27,11 +27,11 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -no-shutdown \
 -boot strict=on \
 -blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-2-storage","read-only":false}' \
--device '{"driver":"virtio-blk-ccw","devno":"fe.0.0002","drive":"libvirt-2-storage","id":"virtio-disk0","bootindex":1}' \
+-device '{"driver":"virtio-blk-ccw","devno":"fe.0.0002","drive":"libvirt-2-storage","id":"virtio-disk0","bootindex":1,"loadparm":"SYSTEM1"}' \
 -blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest2","node-name":"libvirt-1-storage","read-only":false}' \
--device '{"driver":"virtio-blk-ccw","devno":"fe.0.0003","drive":"libvirt-1-storage","id":"virtio-disk1","bootindex":3}' \
+-device '{"driver":"virtio-blk-ccw","devno":"fe.0.0003","drive":"libvirt-1-storage","id":"virtio-disk1","bootindex":3,"loadparm":"3"}' \
 -netdev '{"type":"user","id":"hostnet0"}' \
--device '{"driver":"virtio-net-ccw","netdev":"hostnet0","id":"net0","mac":"00:11:22:33:44:54","bootindex":2,"devno":"fe.0.0000"}' \
+-device '{"driver":"virtio-net-ccw","netdev":"hostnet0","id":"net0","mac":"00:11:22:33:44:54","bootindex":2,"loadparm":"2.LP","devno":"fe.0.0000"}' \
 -netdev '{"type":"user","id":"hostnet1"}' \
 -device '{"driver":"virtio-net-ccw","netdev":"hostnet1","id":"net1","mac":"00:11:22:33:42:36","devno":"fe.0.0004"}' \
 -audiodev '{"id":"audio1","driver":"none"}' \
diff --git a/tests/qemuxmlconfdata/machine-loadparm-net-s390.s390x-9.1.0.args b/tests/qemuxmlconfdata/machine-loadparm-net-s390.s390x-9.1.0.args
new file mode 100644
index 0000000000..4d34784f46
--- /dev/null
+++ b/tests/qemuxmlconfdata/machine-loadparm-net-s390.s390x-9.1.0.args
@@ -0,0 +1,34 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-s390x \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine s390-ccw-virtio-9.1,usb=off,dump-guest-core=off,memory-backend=s390.ram,loadparm=2 \
+-accel tcg \
+-cpu qemu \
+-m size=219136k \
+-object '{"qom-type":"memory-backend-ram","id":"s390.ram","size":224395264}' \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-netdev '{"type":"user","id":"hostnet0"}' \
+-device '{"driver":"virtio-net-ccw","netdev":"hostnet0","id":"net0","mac":"00:11:22:33:44:54","bootindex":1,"devno":"fe.0.0000"}' \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-device '{"driver":"virtio-balloon-ccw","id":"balloon0","devno":"fe.0.0001"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxmlconfdata/machine-loadparm-net-s390.s390x-9.1.0.xml b/tests/qemuxmlconfdata/machine-loadparm-net-s390.s390x-9.1.0.xml
new file mode 100644
index 0000000000..3c2dc60dd1
--- /dev/null
+++ b/tests/qemuxmlconfdata/machine-loadparm-net-s390.s390x-9.1.0.xml
@@ -0,0 +1,32 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio-9.1'>hvm</type>
+  </os>
+  <cpu mode='custom' match='exact' check='none'>
+    <model fallback='forbid'>qemu</model>
+  </cpu>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-s390x</emulator>
+    <controller type='pci' index='0' model='pci-root'/>
+    <interface type='user'>
+      <mac address='00:11:22:33:44:54'/>
+      <model type='virtio'/>
+      <boot order='1' loadparm='2'/>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/>
+    </interface>
+    <audio id='1' type='none'/>
+    <memballoon model='virtio'>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0001'/>
+    </memballoon>
+    <panic model='s390'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxmlconfdata/machine-loadparm-net-s390.s390x-latest.args b/tests/qemuxmlconfdata/machine-loadparm-net-s390.s390x-latest.args
index bdd2782f5a..a5241c38f3 100644
--- a/tests/qemuxmlconfdata/machine-loadparm-net-s390.s390x-latest.args
+++ b/tests/qemuxmlconfdata/machine-loadparm-net-s390.s390x-latest.args
@@ -10,7 +10,7 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
 -object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
--machine s390-ccw-virtio,usb=off,dump-guest-core=off,memory-backend=s390.ram,loadparm=2 \
+-machine s390-ccw-virtio,usb=off,dump-guest-core=off,memory-backend=s390.ram \
 -accel tcg \
 -cpu qemu \
 -m size=219136k \
@@ -27,7 +27,7 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -no-shutdown \
 -boot strict=on \
 -netdev '{"type":"user","id":"hostnet0"}' \
--device '{"driver":"virtio-net-ccw","netdev":"hostnet0","id":"net0","mac":"00:11:22:33:44:54","bootindex":1,"devno":"fe.0.0000"}' \
+-device '{"driver":"virtio-net-ccw","netdev":"hostnet0","id":"net0","mac":"00:11:22:33:44:54","bootindex":1,"loadparm":"2","devno":"fe.0.0000"}' \
 -audiodev '{"id":"audio1","driver":"none"}' \
 -device '{"driver":"virtio-balloon-ccw","id":"balloon0","devno":"fe.0.0001"}' \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
diff --git a/tests/qemuxmlconfdata/machine-loadparm-s390.s390x-9.1.0.args b/tests/qemuxmlconfdata/machine-loadparm-s390.s390x-9.1.0.args
new file mode 100644
index 0000000000..cbb5e9df34
--- /dev/null
+++ b/tests/qemuxmlconfdata/machine-loadparm-s390.s390x-9.1.0.args
@@ -0,0 +1,34 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-s390x \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine s390-ccw-virtio-9.1,usb=off,dump-guest-core=off,memory-backend=s390.ram,loadparm=2 \
+-accel tcg \
+-cpu qemu \
+-m size=219136k \
+-object '{"qom-type":"memory-backend-ram","id":"s390.ram","size":224395264}' \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-1-storage","read-only":false}' \
+-device '{"driver":"virtio-blk-ccw","devno":"fe.0.0000","drive":"libvirt-1-storage","id":"virtio-disk0","bootindex":1}' \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-device '{"driver":"virtio-balloon-ccw","id":"balloon0","devno":"fe.0.0001"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxmlconfdata/machine-loadparm-s390.s390x-9.1.0.xml b/tests/qemuxmlconfdata/machine-loadparm-s390.s390x-9.1.0.xml
new file mode 100644
index 0000000000..994888a05e
--- /dev/null
+++ b/tests/qemuxmlconfdata/machine-loadparm-s390.s390x-9.1.0.xml
@@ -0,0 +1,33 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio-9.1'>hvm</type>
+  </os>
+  <cpu mode='custom' match='exact' check='none'>
+    <model fallback='forbid'>qemu</model>
+  </cpu>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-s390x</emulator>
+    <disk type='block' device='disk'>
+      <driver name='qemu' type='raw'/>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='virtio'/>
+      <boot order='1' loadparm='2'/>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/>
+    </disk>
+    <controller type='pci' index='0' model='pci-root'/>
+    <audio id='1' type='none'/>
+    <memballoon model='virtio'>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0001'/>
+    </memballoon>
+    <panic model='s390'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxmlconfdata/machine-loadparm-s390.s390x-latest.args b/tests/qemuxmlconfdata/machine-loadparm-s390.s390x-latest.args
index 896fc1e578..2b46f1b83f 100644
--- a/tests/qemuxmlconfdata/machine-loadparm-s390.s390x-latest.args
+++ b/tests/qemuxmlconfdata/machine-loadparm-s390.s390x-latest.args
@@ -10,7 +10,7 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -name guest=QEMUGuest1,debug-threads=on \
 -S \
 -object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
--machine s390-ccw-virtio,usb=off,dump-guest-core=off,memory-backend=s390.ram,loadparm=2 \
+-machine s390-ccw-virtio,usb=off,dump-guest-core=off,memory-backend=s390.ram \
 -accel tcg \
 -cpu qemu \
 -m size=219136k \
@@ -27,7 +27,7 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
 -no-shutdown \
 -boot strict=on \
 -blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-1-storage","read-only":false}' \
--device '{"driver":"virtio-blk-ccw","devno":"fe.0.0000","drive":"libvirt-1-storage","id":"virtio-disk0","bootindex":1}' \
+-device '{"driver":"virtio-blk-ccw","devno":"fe.0.0000","drive":"libvirt-1-storage","id":"virtio-disk0","bootindex":1,"loadparm":"2"}' \
 -audiodev '{"id":"audio1","driver":"none"}' \
 -device '{"driver":"virtio-balloon-ccw","id":"balloon0","devno":"fe.0.0001"}' \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
diff --git a/tests/qemuxmlconftest.c b/tests/qemuxmlconftest.c
index 2b94d5dc63..8ee31f486e 100644
--- a/tests/qemuxmlconftest.c
+++ b/tests/qemuxmlconftest.c
@@ -2721,9 +2721,13 @@ mymain(void)
     DO_TEST_CAPS_ARCH_LATEST("machine-keywrap-none", "s390x");
 
     DO_TEST_CAPS_ARCH_LATEST("machine-loadparm-s390", "s390x");
+    DO_TEST_CAPS_ARCH_VER("machine-loadparm-s390", "s390x", "9.1.0");
     DO_TEST_CAPS_ARCH_LATEST("machine-loadparm-net-s390", "s390x");
+    DO_TEST_CAPS_ARCH_VER("machine-loadparm-net-s390", "s390x", "9.1.0");
     DO_TEST_CAPS_ARCH_LATEST("machine-loadparm-hostdev", "s390x");
+    DO_TEST_CAPS_ARCH_VER("machine-loadparm-hostdev", "s390x", "9.1.0");
     DO_TEST_CAPS_ARCH_LATEST("machine-loadparm-multiple-disks-nets-s390", "s390x");
+    DO_TEST_CAPS_ARCH_VER("machine-loadparm-multiple-disks-nets-s390", "s390x", "9.1.0");
     DO_TEST_CAPS_LATEST_PARSE_ERROR("machine-loadparm-s390-char-invalid");
     DO_TEST_CAPS_LATEST_PARSE_ERROR("machine-loadparm-s390-len-invalid");