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[PATCH REBASE 7/7] qemu: Use memory-backend-* for regular guest memory



So far, Libvirt configures memory-backend-* for memory hotplug,
possibly NUMA nodes and in a few other cases. This patch
switches to constructing the memory-backend-* command line for
all cases. To keep ability to migrate guests a little hack is
used: the ID of the object is set to the one that QEMU uses
internally anyways. These IDs are stable (first started to appear
somewhere around v0.13.0-rc0~96) and can't change.

In fact, this patch does exactly what QEMU does internally. The
reason for moving the logic into Libvirt is that QEMU wants to
deprecate the old style of specifying memory.

So far, only x84_64 test cases are changed, because tests for
other architectures use older capabilities, which still lack the
QEMU_CAPS_MACHINE_MEMORY_BACKEND capability and they don't report
the RAM ID.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1836043

Signed-off-by: Michal Privoznik <mprivozn redhat com>
---
 src/qemu/qemu_command.c                       | 69 ++++++++++++++++---
 .../blkdeviotune-group-num.x86_64-latest.args |  3 +-
 ...blkdeviotune-max-length.x86_64-latest.args |  3 +-
 .../blkdeviotune-max.x86_64-latest.args       |  3 +-
 .../channel-unix-guestfwd.x86_64-latest.args  |  3 +-
 .../console-virtio-unix.x86_64-latest.args    |  3 +-
 .../controller-virtio-scsi.x86_64-latest.args |  3 +-
 ...-Icelake-Server-pconfig.x86_64-latest.args |  3 +-
 .../cpu-translation.x86_64-latest.args        |  3 +-
 .../cputune-cpuset-big-id.x86_64-latest.args  |  3 +-
 .../disk-aio-io_uring.x86_64-latest.args      |  3 +-
 .../disk-aio.x86_64-latest.args               |  3 +-
 ...-backing-chains-noindex.x86_64-latest.args |  3 +-
 .../disk-cache.x86_64-latest.args             |  4 +-
 .../disk-cdrom-bus-other.x86_64-latest.args   |  3 +-
 ...m-empty-network-invalid.x86_64-latest.args |  3 +-
 .../disk-cdrom-network.x86_64-latest.args     |  3 +-
 .../disk-cdrom-tray.x86_64-latest.args        |  3 +-
 .../disk-cdrom.x86_64-latest.args             |  3 +-
 .../disk-copy_on_read.x86_64-latest.args      |  3 +-
 .../disk-detect-zeroes.x86_64-latest.args     |  3 +-
 .../disk-discard.x86_64-latest.args           |  3 +-
 .../disk-error-policy.x86_64-latest.args      |  3 +-
 .../disk-floppy-q35-2_11.x86_64-latest.args   |  4 +-
 .../disk-floppy-q35-2_9.x86_64-latest.args    |  4 +-
 .../disk-floppy.x86_64-latest.args            |  3 +-
 .../disk-network-gluster.x86_64-latest.args   |  3 +-
 .../disk-network-http.x86_64-latest.args      |  3 +-
 .../disk-network-iscsi.x86_64-latest.args     |  3 +-
 .../disk-network-nbd.x86_64-latest.args       |  3 +-
 .../disk-network-rbd.x86_64-latest.args       |  3 +-
 .../disk-network-sheepdog.x86_64-latest.args  |  3 +-
 ...isk-network-source-auth.x86_64-latest.args |  3 +-
 ...isk-network-tlsx509-nbd.x86_64-latest.args |  3 +-
 .../disk-nvme.x86_64-latest.args              |  3 +-
 .../disk-readonly-disk.x86_64-latest.args     |  3 +-
 .../disk-scsi-device-auto.x86_64-latest.args  |  3 +-
 .../disk-scsi.x86_64-latest.args              |  3 +-
 .../disk-shared.x86_64-latest.args            |  3 +-
 .../disk-slices.x86_64-latest.args            |  3 +-
 ...irtio-scsi-reservations.x86_64-latest.args |  3 +-
 .../eoi-disabled.x86_64-latest.args           |  3 +-
 .../eoi-enabled.x86_64-latest.args            |  3 +-
 .../floppy-drive-fat.x86_64-latest.args       |  3 +-
 .../qemuxml2argvdata/fs9p.x86_64-latest.args  |  3 +-
 .../genid-auto.x86_64-latest.args             |  3 +-
 .../qemuxml2argvdata/genid.x86_64-latest.args |  3 +-
 ...egl-headless-rendernode.x86_64-latest.args |  3 +-
 .../graphics-egl-headless.x86_64-latest.args  |  3 +-
 ...pice-gl-auto-rendernode.x86_64-latest.args |  3 +-
 ...graphics-vnc-tls-secret.x86_64-latest.args |  3 +-
 .../graphics-vnc-tls.x86_64-latest.args       |  3 +-
 ...tdev-mdev-display-ramfb.x86_64-latest.args |  3 +-
 ...play-spice-egl-headless.x86_64-latest.args |  3 +-
 ...ev-display-spice-opengl.x86_64-latest.args |  3 +-
 ...isplay-vnc-egl-headless.x86_64-latest.args |  3 +-
 ...ostdev-mdev-display-vnc.x86_64-latest.args |  3 +-
 .../hostdev-scsi-lsi.x86_64-latest.args       |  3 +-
 ...ostdev-scsi-virtio-scsi.x86_64-latest.args |  3 +-
 .../hugepages-nvdimm.x86_64-latest.args       |  6 +-
 .../hyperv-off.x86_64-latest.args             |  3 +-
 .../hyperv-panic.x86_64-latest.args           |  3 +-
 .../hyperv-stimer-direct.x86_64-latest.args   |  3 +-
 .../hyperv.x86_64-latest.args                 |  3 +-
 .../intel-iommu-aw-bits.x86_64-latest.args    |  4 +-
 ...ntel-iommu-caching-mode.x86_64-latest.args |  4 +-
 ...ntel-iommu-device-iotlb.x86_64-latest.args |  4 +-
 .../intel-iommu-eim.x86_64-latest.args        |  4 +-
 .../intel-iommu.x86_64-latest.args            |  3 +-
 ...threads-virtio-scsi-pci.x86_64-latest.args |  3 +-
 .../kvmclock+eoi-disabled.x86_64-latest.args  |  3 +-
 ...luks-disks-source-qcow2.x86_64-latest.args |  4 +-
 ...memory-default-hugepage.x86_64-latest.args |  8 ++-
 .../memfd-memory-numa.x86_64-latest.args      |  8 ++-
 ...y-hotplug-nvdimm-access.x86_64-latest.args |  4 +-
 ...ry-hotplug-nvdimm-align.x86_64-latest.args |  4 +-
 ...ry-hotplug-nvdimm-label.x86_64-latest.args |  4 +-
 ...ory-hotplug-nvdimm-pmem.x86_64-latest.args |  4 +-
 ...hotplug-nvdimm-readonly.x86_64-latest.args |  4 +-
 .../memory-hotplug-nvdimm.x86_64-latest.args  |  4 +-
 .../mlock-off.x86_64-latest.args              |  3 +-
 .../mlock-on.x86_64-latest.args               |  3 +-
 .../net-vhostuser.x86_64-latest.args          |  3 +-
 .../numatune-hmat.x86_64-latest.args          |  4 +-
 .../os-firmware-bios.x86_64-latest.args       |  4 +-
 ...os-firmware-efi-secboot.x86_64-latest.args |  4 +-
 .../os-firmware-efi.x86_64-latest.args        |  4 +-
 .../parallel-unix-chardev.x86_64-latest.args  |  3 +-
 ...cie-root-port-nohotplug.x86_64-latest.args |  3 +-
 .../pv-spinlock-disabled.x86_64-latest.args   |  3 +-
 .../pv-spinlock-enabled.x86_64-latest.args    |  3 +-
 .../qemu-ns.x86_64-latest.args                |  3 +-
 .../serial-unix-chardev.x86_64-latest.args    |  3 +-
 ...rtcard-passthrough-unix.x86_64-latest.args |  3 +-
 .../tpm-emulator-tpm2-enc.x86_64-latest.args  |  4 +-
 .../tpm-emulator-tpm2.x86_64-latest.args      |  4 +-
 .../tpm-emulator.x86_64-latest.args           |  4 +-
 .../tpm-passthrough-crb.x86_64-latest.args    |  4 +-
 .../tpm-passthrough.x86_64-latest.args        |  4 +-
 .../tseg-explicit-size.x86_64-latest.args     |  4 +-
 .../usb-redir-unix.x86_64-latest.args         |  3 +-
 ...vhost-user-fs-fd-memory.x86_64-latest.args |  4 +-
 ...vhost-user-fs-hugepages.x86_64-latest.args |  5 +-
 ...host-user-gpu-secondary.x86_64-latest.args |  3 +-
 .../vhost-user-vga.x86_64-latest.args         |  3 +-
 .../vhost-vsock-auto.x86_64-latest.args       |  4 +-
 .../vhost-vsock.x86_64-latest.args            |  3 +-
 ...eo-bochs-display-device.x86_64-latest.args |  3 +-
 ...video-qxl-device-vram64.x86_64-latest.args |  3 +-
 ...o-qxl-sec-device-vram64.x86_64-latest.args |  3 +-
 ...eo-ramfb-display-device.x86_64-latest.args |  3 +-
 .../virtio-9p-multidevs.x86_64-latest.args    |  3 +-
 ...virtio-non-transitional.x86_64-latest.args |  3 +-
 ...-options-controller-ats.x86_64-latest.args |  3 +-
 ...ptions-controller-iommu.x86_64-latest.args |  3 +-
 ...tions-controller-packed.x86_64-latest.args |  3 +-
 ...virtio-options-disk-ats.x86_64-latest.args |  3 +-
 ...rtio-options-disk-iommu.x86_64-latest.args |  3 +-
 ...tio-options-disk-packed.x86_64-latest.args |  3 +-
 .../virtio-options-fs-ats.x86_64-latest.args  |  3 +-
 ...virtio-options-fs-iommu.x86_64-latest.args |  3 +-
 ...irtio-options-fs-packed.x86_64-latest.args |  3 +-
 ...irtio-options-input-ats.x86_64-latest.args |  3 +-
 ...tio-options-input-iommu.x86_64-latest.args |  3 +-
 ...io-options-input-packed.x86_64-latest.args |  3 +-
 ...-options-memballoon-ats.x86_64-latest.args |  3 +-
 ...ptions-memballoon-iommu.x86_64-latest.args |  3 +-
 ...tions-memballoon-packed.x86_64-latest.args |  3 +-
 .../virtio-options-net-ats.x86_64-latest.args |  3 +-
 ...irtio-options-net-iommu.x86_64-latest.args |  3 +-
 ...rtio-options-net-packed.x86_64-latest.args |  3 +-
 .../virtio-options-rng-ats.x86_64-latest.args |  3 +-
 ...irtio-options-rng-iommu.x86_64-latest.args |  3 +-
 ...rtio-options-rng-packed.x86_64-latest.args |  3 +-
 ...irtio-options-video-ats.x86_64-latest.args |  3 +-
 ...tio-options-video-iommu.x86_64-latest.args |  3 +-
 ...io-options-video-packed.x86_64-latest.args |  3 +-
 .../virtio-options.x86_64-latest.args         |  3 +-
 .../virtio-rng-builtin.x86_64-latest.args     |  3 +-
 .../virtio-rng-egd-unix.x86_64-latest.args    |  3 +-
 .../virtio-transitional.x86_64-latest.args    |  3 +-
 ...-default-cpu-kvm-pc-4.2.x86_64-latest.args |  4 +-
 ...default-cpu-kvm-q35-4.2.x86_64-latest.args |  4 +-
 ...-default-cpu-tcg-pc-4.2.x86_64-latest.args |  4 +-
 ...default-cpu-tcg-q35-4.2.x86_64-latest.args |  4 +-
 .../x86_64-pc-graphics.x86_64-latest.args     |  3 +-
 .../x86_64-pc-headless.x86_64-latest.args     |  3 +-
 .../x86_64-q35-graphics.x86_64-latest.args    |  3 +-
 .../x86_64-q35-headless.x86_64-latest.args    |  3 +-
 149 files changed, 395 insertions(+), 163 deletions(-)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index ecbdd226a4..b62dc78893 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -7015,6 +7015,14 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
     if (virDomainNumaHasHMAT(def->numa))
         virBufferAddLit(&buf, ",hmat=on");
 
+    if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_MEMORY_BACKEND)) {
+        const char *defaultRAMid = virQEMUCapsGetMachineDefaultRAMid(qemuCaps,
+                                                                     def->virtType,
+                                                                     def->os.machine);
+        if (defaultRAMid)
+            virBufferAsprintf(&buf, ",memory-backend=%s", defaultRAMid);
+    }
+
     virCommandAddArgBuffer(cmd, &buf);
 
     return 0;
@@ -7124,12 +7132,42 @@ qemuBuildMemPathStr(const virDomainDef *def,
 }
 
 
+static int
+qemuBuildMemCommandLineMemoryBackendNew(virCommandPtr cmd,
+                                        const virDomainDef *def,
+                                        qemuDomainObjPrivatePtr priv,
+                                        const char *defaultRAMid)
+{
+    g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(priv->driver);
+    g_autoptr(virJSONValue) props = NULL;
+    g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
+    virDomainMemoryDef mem = { 0 };
+
+    mem.size = virDomainDefGetMemoryInitial(def);
+    mem.targetNode = -1;
+    mem.info.alias = (char *) defaultRAMid;
+
+    if (qemuBuildMemoryBackendProps(&props, defaultRAMid, cfg,
+                                    priv, def, &mem, false) < 0)
+        return -1;
+
+    if (virQEMUBuildObjectCommandlineFromJSON(&buf, props) < 0)
+        return -1;
+
+    virCommandAddArg(cmd, "-object");
+    virCommandAddArgBuffer(cmd, &buf);
+    return 0;
+}
+
+
 static int
 qemuBuildMemCommandLine(virCommandPtr cmd,
                         const virDomainDef *def,
                         virQEMUCapsPtr qemuCaps,
                         qemuDomainObjPrivatePtr priv)
 {
+    const char *defaultRAMid = NULL;
+
     virCommandAddArg(cmd, "-m");
 
     if (virDomainDefHasMemoryHotplug(def)) {
@@ -7144,19 +7182,28 @@ qemuBuildMemCommandLine(virCommandPtr cmd,
                               virDomainDefGetMemoryInitial(def) / 1024);
     }
 
-    if (def->mem.allocation == VIR_DOMAIN_MEMORY_ALLOCATION_IMMEDIATE) {
-        virCommandAddArgList(cmd, "-mem-prealloc", NULL);
-        priv->memPrealloc = true;
+    defaultRAMid = virQEMUCapsGetMachineDefaultRAMid(qemuCaps,
+                                                     def->virtType,
+                                                     def->os.machine);
+
+    if (defaultRAMid &&
+        virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_MEMORY_BACKEND)) {
+        qemuBuildMemCommandLineMemoryBackendNew(cmd, def, priv, defaultRAMid);
+    } else {
+        if (def->mem.allocation == VIR_DOMAIN_MEMORY_ALLOCATION_IMMEDIATE) {
+            virCommandAddArgList(cmd, "-mem-prealloc", NULL);
+            priv->memPrealloc = true;
+        }
+
+        /*
+         * Add '-mem-path' (and '-mem-prealloc') parameter here if
+         * the hugepages and no numa node is specified.
+         */
+        if (!virDomainNumaGetNodeCount(def->numa) &&
+            qemuBuildMemPathStr(def, cmd, priv) < 0)
+            return -1;
     }
 
-    /*
-     * Add '-mem-path' (and '-mem-prealloc') parameter here if
-     * the hugepages and no numa node is specified.
-     */
-    if (!virDomainNumaGetNodeCount(def->numa) &&
-        qemuBuildMemPathStr(def, cmd, priv) < 0)
-        return -1;
-
     if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_OVERCOMMIT)) {
         virCommandAddArg(cmd, "-overcommit");
         virCommandAddArgFormat(cmd, "mem-lock=%s", def->mem.locked ? "on" : "off");
diff --git a/tests/qemuxml2argvdata/blkdeviotune-group-num.x86_64-latest.args b/tests/qemuxml2argvdata/blkdeviotune-group-num.x86_64-latest.args
index fe8a845aae..79012e5b60 100644
--- a/tests/qemuxml2argvdata/blkdeviotune-group-num.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/blkdeviotune-group-num.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/blkdeviotune-max-length.x86_64-latest.args b/tests/qemuxml2argvdata/blkdeviotune-max-length.x86_64-latest.args
index fe8a845aae..79012e5b60 100644
--- a/tests/qemuxml2argvdata/blkdeviotune-max-length.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/blkdeviotune-max-length.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/blkdeviotune-max.x86_64-latest.args b/tests/qemuxml2argvdata/blkdeviotune-max.x86_64-latest.args
index fe8a845aae..79012e5b60 100644
--- a/tests/qemuxml2argvdata/blkdeviotune-max.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/blkdeviotune-max.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/channel-unix-guestfwd.x86_64-latest.args b/tests/qemuxml2argvdata/channel-unix-guestfwd.x86_64-latest.args
index 95ac94ab7d..f500bfe2ae 100644
--- a/tests/qemuxml2argvdata/channel-unix-guestfwd.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/channel-unix-guestfwd.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/console-virtio-unix.x86_64-latest.args b/tests/qemuxml2argvdata/console-virtio-unix.x86_64-latest.args
index dbad074eb3..5e64598959 100644
--- a/tests/qemuxml2argvdata/console-virtio-unix.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/console-virtio-unix.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/controller-virtio-scsi.x86_64-latest.args b/tests/qemuxml2argvdata/controller-virtio-scsi.x86_64-latest.args
index 454da17e2c..1d7583b981 100644
--- a/tests/qemuxml2argvdata/controller-virtio-scsi.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/controller-virtio-scsi.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 8,sockets=8,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/cpu-Icelake-Server-pconfig.x86_64-latest.args b/tests/qemuxml2argvdata/cpu-Icelake-Server-pconfig.x86_64-latest.args
index 88d05a482a..a512623af6 100644
--- a/tests/qemuxml2argvdata/cpu-Icelake-Server-pconfig.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/cpu-Icelake-Server-pconfig.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-test/master-key.aes \
--machine pc,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu Icelake-Server \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/cpu-translation.x86_64-latest.args b/tests/qemuxml2argvdata/cpu-translation.x86_64-latest.args
index 9322b826f4..84c0d05b34 100644
--- a/tests/qemuxml2argvdata/cpu-translation.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/cpu-translation.x86_64-latest.args
@@ -12,11 +12,12 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu Haswell,pclmulqdq=on,ds-cpl=on,tsc-adjust=on,fxsr-opt=on,lahf-lm=on,\
 cmp-legacy=on,nodeid-msr=on,perfctr-core=on,perfctr-nb=on,kvm-pv-eoi=on,\
 kvm-pv-unhalt=on \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-fade-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/cputune-cpuset-big-id.x86_64-latest.args b/tests/qemuxml2argvdata/cputune-cpuset-big-id.x86_64-latest.args
index b086ebe776..0ec8ba038d 100644
--- a/tests/qemuxml2argvdata/cputune-cpuset-big-id.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/cputune-cpuset-big-id.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-aio-io_uring.x86_64-latest.args b/tests/qemuxml2argvdata/disk-aio-io_uring.x86_64-latest.args
index 8596639f60..69c8742e95 100644
--- a/tests/qemuxml2argvdata/disk-aio-io_uring.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-aio-io_uring.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-aio.x86_64-latest.args b/tests/qemuxml2argvdata/disk-aio.x86_64-latest.args
index 487018cf3e..6f9b81071a 100644
--- a/tests/qemuxml2argvdata/disk-aio.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-aio.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-backing-chains-noindex.x86_64-latest.args b/tests/qemuxml2argvdata/disk-backing-chains-noindex.x86_64-latest.args
index 6e01f55577..0f6d70a855 100644
--- a/tests/qemuxml2argvdata/disk-backing-chains-noindex.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-backing-chains-noindex.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-cache.x86_64-latest.args b/tests/qemuxml2argvdata/disk-cache.x86_64-latest.args
index 931e344028..e66abd9d4f 100644
--- a/tests/qemuxml2argvdata/disk-cache.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-cache.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc-i440fx-1.5,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc-i440fx-1.5,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-cdrom-bus-other.x86_64-latest.args b/tests/qemuxml2argvdata/disk-cdrom-bus-other.x86_64-latest.args
index be091f150f..a77a851941 100644
--- a/tests/qemuxml2argvdata/disk-cdrom-bus-other.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-cdrom-bus-other.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-cdrom-empty-network-invalid.x86_64-latest.args b/tests/qemuxml2argvdata/disk-cdrom-empty-network-invalid.x86_64-latest.args
index 81f250600e..94ffa9f9e4 100644
--- a/tests/qemuxml2argvdata/disk-cdrom-empty-network-invalid.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-cdrom-empty-network-invalid.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-cdrom-network.x86_64-latest.args b/tests/qemuxml2argvdata/disk-cdrom-network.x86_64-latest.args
index 1a102949df..3c4f3993f6 100644
--- a/tests/qemuxml2argvdata/disk-cdrom-network.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-cdrom-network.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc-1.2,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc-1.2,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-cdrom-tray.x86_64-latest.args b/tests/qemuxml2argvdata/disk-cdrom-tray.x86_64-latest.args
index 3e56168acb..4e4e0aa62a 100644
--- a/tests/qemuxml2argvdata/disk-cdrom-tray.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-cdrom-tray.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-test/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 3fa02811-7832-34bd-004d-1ff56a9286ff \
diff --git a/tests/qemuxml2argvdata/disk-cdrom.x86_64-latest.args b/tests/qemuxml2argvdata/disk-cdrom.x86_64-latest.args
index 9c8097c4a6..0d375ffd1c 100644
--- a/tests/qemuxml2argvdata/disk-cdrom.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-cdrom.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-copy_on_read.x86_64-latest.args b/tests/qemuxml2argvdata/disk-copy_on_read.x86_64-latest.args
index 701038404d..493b478cf8 100644
--- a/tests/qemuxml2argvdata/disk-copy_on_read.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-copy_on_read.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-test/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 468404ad-d49c-40f2-9e14-02294f9c1be3 \
diff --git a/tests/qemuxml2argvdata/disk-detect-zeroes.x86_64-latest.args b/tests/qemuxml2argvdata/disk-detect-zeroes.x86_64-latest.args
index 8e8d92a6f7..97cc49225f 100644
--- a/tests/qemuxml2argvdata/disk-detect-zeroes.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-detect-zeroes.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-test/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 92d7a226-cfae-425b-a6d3-00bbf9ec5c9e \
diff --git a/tests/qemuxml2argvdata/disk-discard.x86_64-latest.args b/tests/qemuxml2argvdata/disk-discard.x86_64-latest.args
index 408124dc95..1aa06c7469 100644
--- a/tests/qemuxml2argvdata/disk-discard.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-discard.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-test/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 92d7a226-cfae-425b-a6d3-00bbf9ec5c9e \
diff --git a/tests/qemuxml2argvdata/disk-error-policy.x86_64-latest.args b/tests/qemuxml2argvdata/disk-error-policy.x86_64-latest.args
index e8f5ea10df..c0079efc0a 100644
--- a/tests/qemuxml2argvdata/disk-error-policy.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-error-policy.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-floppy-q35-2_11.x86_64-latest.args b/tests/qemuxml2argvdata/disk-floppy-q35-2_11.x86_64-latest.args
index a624998480..7e35f6a6cd 100644
--- a/tests/qemuxml2argvdata/disk-floppy-q35-2_11.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-floppy-q35-2_11.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc-q35-2.11,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc-q35-2.11,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-floppy-q35-2_9.x86_64-latest.args b/tests/qemuxml2argvdata/disk-floppy-q35-2_9.x86_64-latest.args
index ec3210cdc8..47ef5db354 100644
--- a/tests/qemuxml2argvdata/disk-floppy-q35-2_9.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-floppy-q35-2_9.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc-q35-2.9,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc-q35-2.9,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-floppy.x86_64-latest.args b/tests/qemuxml2argvdata/disk-floppy.x86_64-latest.args
index fbca6c90ec..96756502df 100644
--- a/tests/qemuxml2argvdata/disk-floppy.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-floppy.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-network-gluster.x86_64-latest.args b/tests/qemuxml2argvdata/disk-network-gluster.x86_64-latest.args
index 4e68f1b628..1e992fb6d0 100644
--- a/tests/qemuxml2argvdata/disk-network-gluster.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-network-gluster.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-network-http.x86_64-latest.args b/tests/qemuxml2argvdata/disk-network-http.x86_64-latest.args
index 814f747dad..954f1824dd 100644
--- a/tests/qemuxml2argvdata/disk-network-http.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-network-http.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-network-iscsi.x86_64-latest.args b/tests/qemuxml2argvdata/disk-network-iscsi.x86_64-latest.args
index 9848128092..ab60fc5f4a 100644
--- a/tests/qemuxml2argvdata/disk-network-iscsi.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-network-iscsi.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-network-nbd.x86_64-latest.args b/tests/qemuxml2argvdata/disk-network-nbd.x86_64-latest.args
index 8c9bbed130..5e5c23656a 100644
--- a/tests/qemuxml2argvdata/disk-network-nbd.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-network-nbd.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-network-rbd.x86_64-latest.args b/tests/qemuxml2argvdata/disk-network-rbd.x86_64-latest.args
index 29409df722..e91f009d35 100644
--- a/tests/qemuxml2argvdata/disk-network-rbd.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-network-rbd.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-network-sheepdog.x86_64-latest.args b/tests/qemuxml2argvdata/disk-network-sheepdog.x86_64-latest.args
index a5e197f45b..4418906dc7 100644
--- a/tests/qemuxml2argvdata/disk-network-sheepdog.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-network-sheepdog.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-network-source-auth.x86_64-latest.args b/tests/qemuxml2argvdata/disk-network-source-auth.x86_64-latest.args
index 0ad49ab0fd..257ca1376c 100644
--- a/tests/qemuxml2argvdata/disk-network-source-auth.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-network-source-auth.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-network-tlsx509-nbd.x86_64-latest.args b/tests/qemuxml2argvdata/disk-network-tlsx509-nbd.x86_64-latest.args
index b44832b5e5..8ec4a8ab22 100644
--- a/tests/qemuxml2argvdata/disk-network-tlsx509-nbd.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-network-tlsx509-nbd.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-nvme.x86_64-latest.args b/tests/qemuxml2argvdata/disk-nvme.x86_64-latest.args
index a0b5c5950c..3146ad1251 100644
--- a/tests/qemuxml2argvdata/disk-nvme.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-nvme.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-readonly-disk.x86_64-latest.args b/tests/qemuxml2argvdata/disk-readonly-disk.x86_64-latest.args
index f67ebf0069..7a83ac4afe 100644
--- a/tests/qemuxml2argvdata/disk-readonly-disk.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-readonly-disk.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-scsi-device-auto.x86_64-latest.args b/tests/qemuxml2argvdata/disk-scsi-device-auto.x86_64-latest.args
index 634d929a01..354686c5fa 100644
--- a/tests/qemuxml2argvdata/disk-scsi-device-auto.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-scsi-device-auto.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-scsi.x86_64-latest.args b/tests/qemuxml2argvdata/disk-scsi.x86_64-latest.args
index 489f53d80e..da4ef333c0 100644
--- a/tests/qemuxml2argvdata/disk-scsi.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-scsi.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-shared.x86_64-latest.args b/tests/qemuxml2argvdata/disk-shared.x86_64-latest.args
index 4bae8ae5c9..4cae79c005 100644
--- a/tests/qemuxml2argvdata/disk-shared.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-shared.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-slices.x86_64-latest.args b/tests/qemuxml2argvdata/disk-slices.x86_64-latest.args
index cd2f5847c4..c4e1384f4d 100644
--- a/tests/qemuxml2argvdata/disk-slices.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-slices.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/disk-virtio-scsi-reservations.x86_64-latest.args b/tests/qemuxml2argvdata/disk-virtio-scsi-reservations.x86_64-latest.args
index bfd7a92530..a6e6c12d65 100644
--- a/tests/qemuxml2argvdata/disk-virtio-scsi-reservations.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/disk-virtio-scsi-reservations.x86_64-latest.args
@@ -14,9 +14,10 @@ QEMU_AUDIO_DRV=none \
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -object pr-manager-helper,id=pr-helper0,\
 path=/tmp/lib/domain--1-QEMUGuest1/pr-helper0.sock \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 8,sockets=8,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/eoi-disabled.x86_64-latest.args b/tests/qemuxml2argvdata/eoi-disabled.x86_64-latest.args
index c34f2e78c2..a2593d155a 100644
--- a/tests/qemuxml2argvdata/eoi-disabled.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/eoi-disabled.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64,kvm-pv-eoi=off \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 6,sockets=6,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/eoi-enabled.x86_64-latest.args b/tests/qemuxml2argvdata/eoi-enabled.x86_64-latest.args
index 2ee3ef5031..d0befba30f 100644
--- a/tests/qemuxml2argvdata/eoi-enabled.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/eoi-enabled.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64,kvm-pv-eoi=on \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 6,sockets=6,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/floppy-drive-fat.x86_64-latest.args b/tests/qemuxml2argvdata/floppy-drive-fat.x86_64-latest.args
index c47f2ea717..12f0b9cb64 100644
--- a/tests/qemuxml2argvdata/floppy-drive-fat.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/floppy-drive-fat.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/fs9p.x86_64-latest.args b/tests/qemuxml2argvdata/fs9p.x86_64-latest.args
index 700ae69203..e340218e1a 100644
--- a/tests/qemuxml2argvdata/fs9p.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/fs9p.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/genid-auto.x86_64-latest.args b/tests/qemuxml2argvdata/genid-auto.x86_64-latest.args
index 7c39132ff8..8f08342a0b 100644
--- a/tests/qemuxml2argvdata/genid-auto.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/genid-auto.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/genid.x86_64-latest.args b/tests/qemuxml2argvdata/genid.x86_64-latest.args
index 5bfb8db9f9..7dd7d1f616 100644
--- a/tests/qemuxml2argvdata/genid.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/genid.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/graphics-egl-headless-rendernode.x86_64-latest.args b/tests/qemuxml2argvdata/graphics-egl-headless-rendernode.x86_64-latest.args
index 390a8d16b7..e6025557da 100644
--- a/tests/qemuxml2argvdata/graphics-egl-headless-rendernode.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/graphics-egl-headless-rendernode.x86_64-latest.args
@@ -11,9 +11,10 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/graphics-egl-headless.x86_64-latest.args b/tests/qemuxml2argvdata/graphics-egl-headless.x86_64-latest.args
index 390a8d16b7..e6025557da 100644
--- a/tests/qemuxml2argvdata/graphics-egl-headless.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/graphics-egl-headless.x86_64-latest.args
@@ -11,9 +11,10 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/graphics-spice-gl-auto-rendernode.x86_64-latest.args b/tests/qemuxml2argvdata/graphics-spice-gl-auto-rendernode.x86_64-latest.args
index c0d08964d6..9329e56b12 100644
--- a/tests/qemuxml2argvdata/graphics-spice-gl-auto-rendernode.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/graphics-spice-gl-auto-rendernode.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=spice \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/graphics-vnc-tls-secret.x86_64-latest.args b/tests/qemuxml2argvdata/graphics-vnc-tls-secret.x86_64-latest.args
index 5a73408bf9..b3251fbed4 100644
--- a/tests/qemuxml2argvdata/graphics-vnc-tls-secret.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/graphics-vnc-tls-secret.x86_64-latest.args
@@ -13,9 +13,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/graphics-vnc-tls.x86_64-latest.args b/tests/qemuxml2argvdata/graphics-vnc-tls.x86_64-latest.args
index f435b9a152..cea42c4d1b 100644
--- a/tests/qemuxml2argvdata/graphics-vnc-tls.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/graphics-vnc-tls.x86_64-latest.args
@@ -13,9 +13,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hostdev-mdev-display-ramfb.x86_64-latest.args b/tests/qemuxml2argvdata/hostdev-mdev-display-ramfb.x86_64-latest.args
index bb12d314b9..f1a3026474 100644
--- a/tests/qemuxml2argvdata/hostdev-mdev-display-ramfb.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hostdev-mdev-display-ramfb.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest2/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hostdev-mdev-display-spice-egl-headless.x86_64-latest.args b/tests/qemuxml2argvdata/hostdev-mdev-display-spice-egl-headless.x86_64-latest.args
index 090b644abb..580cbd9489 100644
--- a/tests/qemuxml2argvdata/hostdev-mdev-display-spice-egl-headless.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hostdev-mdev-display-spice-egl-headless.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=spice \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest2/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hostdev-mdev-display-spice-opengl.x86_64-latest.args b/tests/qemuxml2argvdata/hostdev-mdev-display-spice-opengl.x86_64-latest.args
index 201ccccc7f..345bddfc43 100644
--- a/tests/qemuxml2argvdata/hostdev-mdev-display-spice-opengl.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hostdev-mdev-display-spice-opengl.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=spice \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest2/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hostdev-mdev-display-vnc-egl-headless.x86_64-latest.args b/tests/qemuxml2argvdata/hostdev-mdev-display-vnc-egl-headless.x86_64-latest.args
index 0809fdce45..cef437a228 100644
--- a/tests/qemuxml2argvdata/hostdev-mdev-display-vnc-egl-headless.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hostdev-mdev-display-vnc-egl-headless.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest2/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hostdev-mdev-display-vnc.x86_64-latest.args b/tests/qemuxml2argvdata/hostdev-mdev-display-vnc.x86_64-latest.args
index 58a7549935..68c28fc41e 100644
--- a/tests/qemuxml2argvdata/hostdev-mdev-display-vnc.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hostdev-mdev-display-vnc.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest2/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hostdev-scsi-lsi.x86_64-latest.args b/tests/qemuxml2argvdata/hostdev-scsi-lsi.x86_64-latest.args
index d4599f6002..de4e02fb55 100644
--- a/tests/qemuxml2argvdata/hostdev-scsi-lsi.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hostdev-scsi-lsi.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest2/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9466-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hostdev-scsi-virtio-scsi.x86_64-latest.args b/tests/qemuxml2argvdata/hostdev-scsi-virtio-scsi.x86_64-latest.args
index f86cbd7314..6bfbbadb9d 100644
--- a/tests/qemuxml2argvdata/hostdev-scsi-virtio-scsi.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hostdev-scsi-virtio-scsi.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest2/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9466-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hugepages-nvdimm.x86_64-latest.args b/tests/qemuxml2argvdata/hugepages-nvdimm.x86_64-latest.args
index 969bb713b5..192b033e9e 100644
--- a/tests/qemuxml2argvdata/hugepages-nvdimm.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hugepages-nvdimm.x86_64-latest.args
@@ -12,9 +12,13 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m size=1048576k,slots=16,maxmem=1099511627776k \
+-object memory-backend-file,id=pc.ram,\
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,prealloc=yes,\
+size=1073741824 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-file,id=ram-node0,\
diff --git a/tests/qemuxml2argvdata/hyperv-off.x86_64-latest.args b/tests/qemuxml2argvdata/hyperv-off.x86_64-latest.args
index ea3fc775bb..ce7af1bd3a 100644
--- a/tests/qemuxml2argvdata/hyperv-off.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hyperv-off.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 6,sockets=6,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hyperv-panic.x86_64-latest.args b/tests/qemuxml2argvdata/hyperv-panic.x86_64-latest.args
index 41527208ab..870fa38d82 100644
--- a/tests/qemuxml2argvdata/hyperv-panic.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hyperv-panic.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64,hv-crash \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 6,sockets=6,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hyperv-stimer-direct.x86_64-latest.args b/tests/qemuxml2argvdata/hyperv-stimer-direct.x86_64-latest.args
index bdcf33c1bf..f64bad579d 100644
--- a/tests/qemuxml2argvdata/hyperv-stimer-direct.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hyperv-stimer-direct.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64,hv-vpindex,hv-synic,hv-stimer,hv-stimer-direct \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 6,sockets=6,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hyperv.x86_64-latest.args b/tests/qemuxml2argvdata/hyperv.x86_64-latest.args
index 7382553860..c6cba06981 100644
--- a/tests/qemuxml2argvdata/hyperv.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/hyperv.x86_64-latest.args
@@ -12,11 +12,12 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu 'qemu64,hv-relaxed,hv-vapic,hv-spinlocks=0x2fff,hv-vpindex,hv-runtime,\
 hv-synic,hv-stimer,hv-reset,hv-vendor-id=KVM Hv,hv-frequencies,\
 hv-reenlightenment,hv-tlbflush,hv-ipi,hv-evmcs' \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 6,sockets=6,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/intel-iommu-aw-bits.x86_64-latest.args b/tests/qemuxml2argvdata/intel-iommu-aw-bits.x86_64-latest.args
index 0ce0952b51..211ea3d572 100644
--- a/tests/qemuxml2argvdata/intel-iommu-aw-bits.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/intel-iommu-aw-bits.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine q35,accel=kvm,usb=off,dump-guest-core=off,kernel_irqchip=split \
+-machine q35,accel=kvm,usb=off,dump-guest-core=off,kernel_irqchip=split,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/intel-iommu-caching-mode.x86_64-latest.args b/tests/qemuxml2argvdata/intel-iommu-caching-mode.x86_64-latest.args
index c232121595..cea414a7f5 100644
--- a/tests/qemuxml2argvdata/intel-iommu-caching-mode.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/intel-iommu-caching-mode.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine q35,accel=kvm,usb=off,dump-guest-core=off,kernel_irqchip=split \
+-machine q35,accel=kvm,usb=off,dump-guest-core=off,kernel_irqchip=split,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/intel-iommu-device-iotlb.x86_64-latest.args b/tests/qemuxml2argvdata/intel-iommu-device-iotlb.x86_64-latest.args
index addb45a0b3..ef2fa61db8 100644
--- a/tests/qemuxml2argvdata/intel-iommu-device-iotlb.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/intel-iommu-device-iotlb.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine q35,accel=kvm,usb=off,dump-guest-core=off,kernel_irqchip=split \
+-machine q35,accel=kvm,usb=off,dump-guest-core=off,kernel_irqchip=split,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/intel-iommu-eim.x86_64-latest.args b/tests/qemuxml2argvdata/intel-iommu-eim.x86_64-latest.args
index 98650baaaa..43e666d14f 100644
--- a/tests/qemuxml2argvdata/intel-iommu-eim.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/intel-iommu-eim.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine q35,accel=kvm,usb=off,dump-guest-core=off,kernel_irqchip=split \
+-machine q35,accel=kvm,usb=off,dump-guest-core=off,kernel_irqchip=split,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 288,sockets=288,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/intel-iommu.x86_64-latest.args b/tests/qemuxml2argvdata/intel-iommu.x86_64-latest.args
index 92d25f6d41..5fe3ed0c26 100644
--- a/tests/qemuxml2argvdata/intel-iommu.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/intel-iommu.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine q35,accel=tcg,usb=off,dump-guest-core=off \
+-machine q35,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/iothreads-virtio-scsi-pci.x86_64-latest.args b/tests/qemuxml2argvdata/iothreads-virtio-scsi-pci.x86_64-latest.args
index d00867a09b..a2f4d5e609 100644
--- a/tests/qemuxml2argvdata/iothreads-virtio-scsi-pci.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/iothreads-virtio-scsi-pci.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,cores=1,threads=1 \
 -object iothread,id=iothread1 \
diff --git a/tests/qemuxml2argvdata/kvmclock+eoi-disabled.x86_64-latest.args b/tests/qemuxml2argvdata/kvmclock+eoi-disabled.x86_64-latest.args
index c4cd5f5beb..8842d2a448 100644
--- a/tests/qemuxml2argvdata/kvmclock+eoi-disabled.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/kvmclock+eoi-disabled.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64,kvmclock=off,kvm-pv-eoi=off \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 6,sockets=6,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/luks-disks-source-qcow2.x86_64-latest.args b/tests/qemuxml2argvdata/luks-disks-source-qcow2.x86_64-latest.args
index 3ce9f81006..6e469d1953 100644
--- a/tests/qemuxml2argvdata/luks-disks-source-qcow2.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/luks-disks-source-qcow2.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-encryptdisk/master-key.aes \
--machine pc-i440fx-2.1,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc-i440fx-2.1,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 496898a6-e6ff-f7c8-5dc2-3cf410945ee9 \
diff --git a/tests/qemuxml2argvdata/memfd-memory-default-hugepage.x86_64-latest.args b/tests/qemuxml2argvdata/memfd-memory-default-hugepage.x86_64-latest.args
index 5d256c42bc..b43e7d9c3c 100644
--- a/tests/qemuxml2argvdata/memfd-memory-default-hugepage.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/memfd-memory-default-hugepage.x86_64-latest.args
@@ -12,14 +12,16 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-instance-00000092/master-key.aes \
--machine pc-i440fx-2.3,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc-i440fx-2.3,accel=kvm,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 14336 \
--mem-prealloc \
+-object memory-backend-memfd,id=pc.ram,hugetlb=yes,hugetlbsize=2097152,\
+share=yes,prealloc=yes,size=15032385536 \
 -overcommit mem-lock=off \
 -smp 8,sockets=1,dies=1,cores=8,threads=1 \
 -object memory-backend-memfd,id=ram-node0,hugetlb=yes,hugetlbsize=2097152,\
-share=yes,size=15032385536,host-nodes=3,policy=preferred \
+share=yes,prealloc=yes,size=15032385536,host-nodes=3,policy=preferred \
 -numa node,nodeid=0,cpus=0-7,memdev=ram-node0 \
 -uuid 126f2720-6f8e-45ab-a886-ec9277079a67 \
 -display none \
diff --git a/tests/qemuxml2argvdata/memfd-memory-numa.x86_64-latest.args b/tests/qemuxml2argvdata/memfd-memory-numa.x86_64-latest.args
index 5d256c42bc..b43e7d9c3c 100644
--- a/tests/qemuxml2argvdata/memfd-memory-numa.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/memfd-memory-numa.x86_64-latest.args
@@ -12,14 +12,16 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-instance-00000092/master-key.aes \
--machine pc-i440fx-2.3,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc-i440fx-2.3,accel=kvm,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 14336 \
--mem-prealloc \
+-object memory-backend-memfd,id=pc.ram,hugetlb=yes,hugetlbsize=2097152,\
+share=yes,prealloc=yes,size=15032385536 \
 -overcommit mem-lock=off \
 -smp 8,sockets=1,dies=1,cores=8,threads=1 \
 -object memory-backend-memfd,id=ram-node0,hugetlb=yes,hugetlbsize=2097152,\
-share=yes,size=15032385536,host-nodes=3,policy=preferred \
+share=yes,prealloc=yes,size=15032385536,host-nodes=3,policy=preferred \
 -numa node,nodeid=0,cpus=0-7,memdev=ram-node0 \
 -uuid 126f2720-6f8e-45ab-a886-ec9277079a67 \
 -display none \
diff --git a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-access.x86_64-latest.args b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-access.x86_64-latest.args
index 8d3fa2e867..c5c5befdd5 100644
--- a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-access.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-access.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m size=219136k,slots=16,maxmem=1099511627776k \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=224395264 \
diff --git a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-align.x86_64-latest.args b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-align.x86_64-latest.args
index 4f22f78277..418bf1158d 100644
--- a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-align.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-align.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m size=219136k,slots=16,maxmem=1099511627776k \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=224395264 \
diff --git a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-label.x86_64-latest.args b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-label.x86_64-latest.args
index 53dda234a2..66477a2b09 100644
--- a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-label.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-label.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m size=219136k,slots=16,maxmem=1099511627776k \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=224395264 \
diff --git a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-pmem.x86_64-latest.args b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-pmem.x86_64-latest.args
index cac02a6f6d..759d749c2e 100644
--- a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-pmem.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-pmem.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m size=219136k,slots=16,maxmem=1099511627776k \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=224395264 \
diff --git a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-readonly.x86_64-latest.args b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-readonly.x86_64-latest.args
index 5e44496e39..b195b8625c 100644
--- a/tests/qemuxml2argvdata/memory-hotplug-nvdimm-readonly.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/memory-hotplug-nvdimm-readonly.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m size=219136k,slots=16,maxmem=1099511627776k \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=224395264 \
diff --git a/tests/qemuxml2argvdata/memory-hotplug-nvdimm.x86_64-latest.args b/tests/qemuxml2argvdata/memory-hotplug-nvdimm.x86_64-latest.args
index 94f8444d95..ae416d7c7f 100644
--- a/tests/qemuxml2argvdata/memory-hotplug-nvdimm.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/memory-hotplug-nvdimm.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,nvdimm=on,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m size=1048576k,slots=16,maxmem=1099511627776k \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=1073741824 \
diff --git a/tests/qemuxml2argvdata/mlock-off.x86_64-latest.args b/tests/qemuxml2argvdata/mlock-off.x86_64-latest.args
index 967fe4c826..2772c82ff6 100644
--- a/tests/qemuxml2argvdata/mlock-off.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/mlock-off.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/mlock-on.x86_64-latest.args b/tests/qemuxml2argvdata/mlock-on.x86_64-latest.args
index 167214fd64..f77d866055 100644
--- a/tests/qemuxml2argvdata/mlock-on.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/mlock-on.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=on \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/net-vhostuser.x86_64-latest.args b/tests/qemuxml2argvdata/net-vhostuser.x86_64-latest.args
index 27fa24a64f..d889d34168 100644
--- a/tests/qemuxml2argvdata/net-vhostuser.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/net-vhostuser.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/numatune-hmat.x86_64-latest.args b/tests/qemuxml2argvdata/numatune-hmat.x86_64-latest.args
index c52015caa8..be4a9ed871 100644
--- a/tests/qemuxml2argvdata/numatune-hmat.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/numatune-hmat.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off,hmat=on \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,hmat=on,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 12288 \
+-object memory-backend-ram,id=pc.ram,size=12884901888 \
 -overcommit mem-lock=off \
 -smp 12,sockets=12,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=2147483648 \
diff --git a/tests/qemuxml2argvdata/os-firmware-bios.x86_64-latest.args b/tests/qemuxml2argvdata/os-firmware-bios.x86_64-latest.args
index 4391c6eda2..ab94f309df 100644
--- a/tests/qemuxml2argvdata/os-firmware-bios.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/os-firmware-bios.x86_64-latest.args
@@ -12,10 +12,12 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-fedora/master-key.aes \
--machine pc-q35-4.0,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc-q35-4.0,accel=kvm,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -bios /usr/share/seabios/bios-256k.bin \
 -m 8 \
+-object memory-backend-ram,id=pc.ram,size=8388608 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 63840878-0deb-4095-97e6-fc444d9bc9fa \
diff --git a/tests/qemuxml2argvdata/os-firmware-efi-secboot.x86_64-latest.args b/tests/qemuxml2argvdata/os-firmware-efi-secboot.x86_64-latest.args
index f8af2100ea..1eb5aad17b 100644
--- a/tests/qemuxml2argvdata/os-firmware-efi-secboot.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/os-firmware-efi-secboot.x86_64-latest.args
@@ -24,10 +24,12 @@ file=/tmp/lib/domain--1-fedora/master-key.aes \
 -blockdev '{"node-name":"libvirt-pflash1-format","read-only":false,\
 "driver":"raw","file":"libvirt-pflash1-storage"}' \
 -machine pc-q35-4.0,accel=kvm,usb=off,smm=on,dump-guest-core=off,\
-pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format \
+pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -global driver=cfi.pflash01,property=secure,value=on \
 -m 8 \
+-object memory-backend-ram,id=pc.ram,size=8388608 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 63840878-0deb-4095-97e6-fc444d9bc9fa \
diff --git a/tests/qemuxml2argvdata/os-firmware-efi.x86_64-latest.args b/tests/qemuxml2argvdata/os-firmware-efi.x86_64-latest.args
index a06213eb19..9b8cbc45b9 100644
--- a/tests/qemuxml2argvdata/os-firmware-efi.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/os-firmware-efi.x86_64-latest.args
@@ -24,9 +24,11 @@ file=/tmp/lib/domain--1-fedora/master-key.aes \
 -blockdev '{"node-name":"libvirt-pflash1-format","read-only":false,\
 "driver":"raw","file":"libvirt-pflash1-storage"}' \
 -machine pc-q35-4.0,accel=kvm,usb=off,smm=on,dump-guest-core=off,\
-pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format \
+pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 8 \
+-object memory-backend-ram,id=pc.ram,size=8388608 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 63840878-0deb-4095-97e6-fc444d9bc9fa \
diff --git a/tests/qemuxml2argvdata/parallel-unix-chardev.x86_64-latest.args b/tests/qemuxml2argvdata/parallel-unix-chardev.x86_64-latest.args
index b3383da9a7..ea333ef5f8 100644
--- a/tests/qemuxml2argvdata/parallel-unix-chardev.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/parallel-unix-chardev.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/pcie-root-port-nohotplug.x86_64-latest.args b/tests/qemuxml2argvdata/pcie-root-port-nohotplug.x86_64-latest.args
index 0f81b31ad9..619b03a3eb 100644
--- a/tests/qemuxml2argvdata/pcie-root-port-nohotplug.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/pcie-root-port-nohotplug.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-guest/master-key.aes \
--machine q35,accel=tcg,usb=off,dump-guest-core=off \
+-machine q35,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 2048 \
+-object memory-backend-ram,id=pc.ram,size=2147483648 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,cores=1,threads=1 \
 -uuid 11dbdcdd-4c3b-482b-8903-9bdb8c0a2774 \
diff --git a/tests/qemuxml2argvdata/pv-spinlock-disabled.x86_64-latest.args b/tests/qemuxml2argvdata/pv-spinlock-disabled.x86_64-latest.args
index eb449837bf..30f45b8a04 100644
--- a/tests/qemuxml2argvdata/pv-spinlock-disabled.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/pv-spinlock-disabled.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64,kvm-pv-unhalt=off \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 6,sockets=6,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/pv-spinlock-enabled.x86_64-latest.args b/tests/qemuxml2argvdata/pv-spinlock-enabled.x86_64-latest.args
index af14fa05a9..beb0e5f2ef 100644
--- a/tests/qemuxml2argvdata/pv-spinlock-enabled.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/pv-spinlock-enabled.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64,kvm-pv-unhalt=on \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 6,sockets=6,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/qemu-ns.x86_64-latest.args b/tests/qemuxml2argvdata/qemu-ns.x86_64-latest.args
index 7864f90402..aefe486298 100644
--- a/tests/qemuxml2argvdata/qemu-ns.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/qemu-ns.x86_64-latest.args
@@ -14,9 +14,10 @@ BAR='' \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/serial-unix-chardev.x86_64-latest.args b/tests/qemuxml2argvdata/serial-unix-chardev.x86_64-latest.args
index 05d42adda1..07b7aba42f 100644
--- a/tests/qemuxml2argvdata/serial-unix-chardev.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/serial-unix-chardev.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/smartcard-passthrough-unix.x86_64-latest.args b/tests/qemuxml2argvdata/smartcard-passthrough-unix.x86_64-latest.args
index 4f1e3242ed..3e0262e49c 100644
--- a/tests/qemuxml2argvdata/smartcard-passthrough-unix.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/smartcard-passthrough-unix.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/tpm-emulator-tpm2-enc.x86_64-latest.args b/tests/qemuxml2argvdata/tpm-emulator-tpm2-enc.x86_64-latest.args
index 2455e14cfe..90505c7a76 100644
--- a/tests/qemuxml2argvdata/tpm-emulator-tpm2-enc.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/tpm-emulator-tpm2-enc.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-TPM-VM/master-key.aes \
--machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 2048 \
+-object memory-backend-ram,id=pc.ram,size=2147483648 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 11d7cd22-da89-3094-6212-079a48a309a1 \
diff --git a/tests/qemuxml2argvdata/tpm-emulator-tpm2.x86_64-latest.args b/tests/qemuxml2argvdata/tpm-emulator-tpm2.x86_64-latest.args
index 2455e14cfe..90505c7a76 100644
--- a/tests/qemuxml2argvdata/tpm-emulator-tpm2.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/tpm-emulator-tpm2.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-TPM-VM/master-key.aes \
--machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 2048 \
+-object memory-backend-ram,id=pc.ram,size=2147483648 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 11d7cd22-da89-3094-6212-079a48a309a1 \
diff --git a/tests/qemuxml2argvdata/tpm-emulator.x86_64-latest.args b/tests/qemuxml2argvdata/tpm-emulator.x86_64-latest.args
index 2455e14cfe..90505c7a76 100644
--- a/tests/qemuxml2argvdata/tpm-emulator.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/tpm-emulator.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-TPM-VM/master-key.aes \
--machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 2048 \
+-object memory-backend-ram,id=pc.ram,size=2147483648 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 11d7cd22-da89-3094-6212-079a48a309a1 \
diff --git a/tests/qemuxml2argvdata/tpm-passthrough-crb.x86_64-latest.args b/tests/qemuxml2argvdata/tpm-passthrough-crb.x86_64-latest.args
index 5508e4defb..911d0c660c 100644
--- a/tests/qemuxml2argvdata/tpm-passthrough-crb.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/tpm-passthrough-crb.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-TPM-VM/master-key.aes \
--machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 2048 \
+-object memory-backend-ram,id=pc.ram,size=2147483648 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 11d7cd22-da89-3094-6212-079a48a309a1 \
diff --git a/tests/qemuxml2argvdata/tpm-passthrough.x86_64-latest.args b/tests/qemuxml2argvdata/tpm-passthrough.x86_64-latest.args
index 60edf86dbd..5da7d13a3d 100644
--- a/tests/qemuxml2argvdata/tpm-passthrough.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/tpm-passthrough.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-TPM-VM/master-key.aes \
--machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 2048 \
+-object memory-backend-ram,id=pc.ram,size=2147483648 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid 11d7cd22-da89-3094-6212-079a48a309a1 \
diff --git a/tests/qemuxml2argvdata/tseg-explicit-size.x86_64-latest.args b/tests/qemuxml2argvdata/tseg-explicit-size.x86_64-latest.args
index 53dab283cc..2e931dfe9a 100644
--- a/tests/qemuxml2argvdata/tseg-explicit-size.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/tseg-explicit-size.x86_64-latest.args
@@ -12,10 +12,12 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc-q35-2.10,accel=tcg,usb=off,smm=on,dump-guest-core=off \
+-machine pc-q35-2.10,accel=tcg,usb=off,smm=on,dump-guest-core=off,\
+memory-backend=pc.ram \
 -global mch.extended-tseg-mbytes=48 \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/usb-redir-unix.x86_64-latest.args b/tests/qemuxml2argvdata/usb-redir-unix.x86_64-latest.args
index d6abba6817..1d247b0337 100644
--- a/tests/qemuxml2argvdata/usb-redir-unix.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/usb-redir-unix.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/vhost-user-fs-fd-memory.x86_64-latest.args b/tests/qemuxml2argvdata/vhost-user-fs-fd-memory.x86_64-latest.args
index dd5f68abc5..13359c91fe 100644
--- a/tests/qemuxml2argvdata/vhost-user-fs-fd-memory.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/vhost-user-fs-fd-memory.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-guest/master-key.aes \
--machine pc,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 14336 \
+-object memory-backend-file,id=pc.ram,\
+mem-path=/var/lib/libvirt/qemu/ram/-1-guest/pc.ram,share=yes,size=15032385536 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,cores=1,threads=1 \
 -object memory-backend-file,id=ram-node0,\
diff --git a/tests/qemuxml2argvdata/vhost-user-fs-hugepages.x86_64-latest.args b/tests/qemuxml2argvdata/vhost-user-fs-hugepages.x86_64-latest.args
index e4f5db7a63..59f45d466b 100644
--- a/tests/qemuxml2argvdata/vhost-user-fs-hugepages.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/vhost-user-fs-hugepages.x86_64-latest.args
@@ -12,9 +12,12 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-guest/master-key.aes \
--machine q35,accel=tcg,usb=off,dump-guest-core=off \
+-machine q35,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 2048 \
+-object memory-backend-file,id=pc.ram,\
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-guest,share=yes,prealloc=yes,\
+size=2147483648 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,cores=1,threads=1 \
 -object memory-backend-file,id=ram-node0,\
diff --git a/tests/qemuxml2argvdata/vhost-user-gpu-secondary.x86_64-latest.args b/tests/qemuxml2argvdata/vhost-user-gpu-secondary.x86_64-latest.args
index e99a5342dc..e7d3315b8f 100644
--- a/tests/qemuxml2argvdata/vhost-user-gpu-secondary.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/vhost-user-gpu-secondary.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-memfd,id=pc.ram,share=yes,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -object memory-backend-memfd,id=ram-node0,share=yes,size=224395264 \
diff --git a/tests/qemuxml2argvdata/vhost-user-vga.x86_64-latest.args b/tests/qemuxml2argvdata/vhost-user-vga.x86_64-latest.args
index 277bf8c646..df5b1b481d 100644
--- a/tests/qemuxml2argvdata/vhost-user-vga.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/vhost-user-vga.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-memfd,id=pc.ram,share=yes,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -object memory-backend-memfd,id=ram-node0,share=yes,size=224395264 \
diff --git a/tests/qemuxml2argvdata/vhost-vsock-auto.x86_64-latest.args b/tests/qemuxml2argvdata/vhost-vsock-auto.x86_64-latest.args
index e083b872c5..bc9102eab3 100644
--- a/tests/qemuxml2argvdata/vhost-vsock-auto.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/vhost-vsock-auto.x86_64-latest.args
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-test/master-key.aes \
--machine pc-i440fx-2.9,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc-i440fx-2.9,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid bba65c0e-c049-934f-b6aa-4e2c0582acdf \
diff --git a/tests/qemuxml2argvdata/vhost-vsock.x86_64-latest.args b/tests/qemuxml2argvdata/vhost-vsock.x86_64-latest.args
index 8b3538a56a..a461d4d242 100644
--- a/tests/qemuxml2argvdata/vhost-vsock.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/vhost-vsock.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-test/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid bba65c0e-c049-934f-b6aa-4e2c0582acdf \
diff --git a/tests/qemuxml2argvdata/video-bochs-display-device.x86_64-latest.args b/tests/qemuxml2argvdata/video-bochs-display-device.x86_64-latest.args
index b7fef1fe08..094c96aad6 100644
--- a/tests/qemuxml2argvdata/video-bochs-display-device.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/video-bochs-display-device.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/video-qxl-device-vram64.x86_64-latest.args b/tests/qemuxml2argvdata/video-qxl-device-vram64.x86_64-latest.args
index f12cef8549..6f38fae69c 100644
--- a/tests/qemuxml2argvdata/video-qxl-device-vram64.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/video-qxl-device-vram64.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/video-qxl-sec-device-vram64.x86_64-latest.args b/tests/qemuxml2argvdata/video-qxl-sec-device-vram64.x86_64-latest.args
index d651b69902..e79c21eaf0 100644
--- a/tests/qemuxml2argvdata/video-qxl-sec-device-vram64.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/video-qxl-sec-device-vram64.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/video-ramfb-display-device.x86_64-latest.args b/tests/qemuxml2argvdata/video-ramfb-display-device.x86_64-latest.args
index 6fe792f46d..5e4d4db341 100644
--- a/tests/qemuxml2argvdata/video-ramfb-display-device.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/video-ramfb-display-device.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 1024 \
+-object memory-backend-ram,id=pc.ram,size=1073741824 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-9p-multidevs.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-9p-multidevs.x86_64-latest.args
index 5a2e1fafe1..4e453a2b05 100644
--- a/tests/qemuxml2argvdata/virtio-9p-multidevs.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-9p-multidevs.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
index 1fe7901479..8674a4b99d 100644
--- a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine q35,accel=tcg,usb=off,dump-guest-core=off \
+-machine q35,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-controller-ats.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-controller-ats.x86_64-latest.args
index 734e239617..6552ee68f0 100644
--- a/tests/qemuxml2argvdata/virtio-options-controller-ats.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-controller-ats.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-controller-iommu.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-controller-iommu.x86_64-latest.args
index 3403a515ca..15eb4b5c49 100644
--- a/tests/qemuxml2argvdata/virtio-options-controller-iommu.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-controller-iommu.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-controller-packed.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-controller-packed.x86_64-latest.args
index 6d0e9f3167..ae605a6ef0 100644
--- a/tests/qemuxml2argvdata/virtio-options-controller-packed.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-controller-packed.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-disk-ats.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-disk-ats.x86_64-latest.args
index cf82457eb6..908b5724d4 100644
--- a/tests/qemuxml2argvdata/virtio-options-disk-ats.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-disk-ats.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-disk-iommu.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-disk-iommu.x86_64-latest.args
index 70a5ee13a1..3a030d8efb 100644
--- a/tests/qemuxml2argvdata/virtio-options-disk-iommu.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-disk-iommu.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-disk-packed.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-disk-packed.x86_64-latest.args
index 09ac4d559b..0cc82a2e46 100644
--- a/tests/qemuxml2argvdata/virtio-options-disk-packed.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-disk-packed.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-fs-ats.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-fs-ats.x86_64-latest.args
index 6fb1e9f7e2..92b8e248eb 100644
--- a/tests/qemuxml2argvdata/virtio-options-fs-ats.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-fs-ats.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-fs-iommu.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-fs-iommu.x86_64-latest.args
index 46d9eb4fca..62c2d347f3 100644
--- a/tests/qemuxml2argvdata/virtio-options-fs-iommu.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-fs-iommu.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-fs-packed.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-fs-packed.x86_64-latest.args
index 6856f3899d..79aa5ca1a0 100644
--- a/tests/qemuxml2argvdata/virtio-options-fs-packed.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-fs-packed.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-input-ats.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-input-ats.x86_64-latest.args
index fe753ac550..27375c96ba 100644
--- a/tests/qemuxml2argvdata/virtio-options-input-ats.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-input-ats.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-input-iommu.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-input-iommu.x86_64-latest.args
index 66ed22e1cd..b38a8f3f9b 100644
--- a/tests/qemuxml2argvdata/virtio-options-input-iommu.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-input-iommu.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-input-packed.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-input-packed.x86_64-latest.args
index 866a461794..38a402ef5a 100644
--- a/tests/qemuxml2argvdata/virtio-options-input-packed.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-input-packed.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-memballoon-ats.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-memballoon-ats.x86_64-latest.args
index f5ddb86840..9b4ef3711c 100644
--- a/tests/qemuxml2argvdata/virtio-options-memballoon-ats.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-memballoon-ats.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-memballoon-iommu.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-memballoon-iommu.x86_64-latest.args
index 6a62e28dc9..ead878573d 100644
--- a/tests/qemuxml2argvdata/virtio-options-memballoon-iommu.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-memballoon-iommu.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-memballoon-packed.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-memballoon-packed.x86_64-latest.args
index 7b6c5f3694..3c32335896 100644
--- a/tests/qemuxml2argvdata/virtio-options-memballoon-packed.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-memballoon-packed.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-net-ats.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-net-ats.x86_64-latest.args
index 065033e3b3..12c0764d56 100644
--- a/tests/qemuxml2argvdata/virtio-options-net-ats.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-net-ats.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-net-iommu.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-net-iommu.x86_64-latest.args
index fd97172249..f2d626a35f 100644
--- a/tests/qemuxml2argvdata/virtio-options-net-iommu.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-net-iommu.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-net-packed.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-net-packed.x86_64-latest.args
index f60ebdd50c..e6453534d4 100644
--- a/tests/qemuxml2argvdata/virtio-options-net-packed.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-net-packed.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-rng-ats.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-rng-ats.x86_64-latest.args
index aa7b46831b..cd4807b6c4 100644
--- a/tests/qemuxml2argvdata/virtio-options-rng-ats.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-rng-ats.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-rng-iommu.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-rng-iommu.x86_64-latest.args
index 7e0dbf151d..66fb11bf7a 100644
--- a/tests/qemuxml2argvdata/virtio-options-rng-iommu.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-rng-iommu.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-rng-packed.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-rng-packed.x86_64-latest.args
index 0958aaeae4..3feff0eb58 100644
--- a/tests/qemuxml2argvdata/virtio-options-rng-packed.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-rng-packed.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-video-ats.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-video-ats.x86_64-latest.args
index 9b85c9cb20..3ec61dab11 100644
--- a/tests/qemuxml2argvdata/virtio-options-video-ats.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-video-ats.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-video-iommu.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-video-iommu.x86_64-latest.args
index d8a664d8d9..cfd3024e02 100644
--- a/tests/qemuxml2argvdata/virtio-options-video-iommu.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-video-iommu.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options-video-packed.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options-video-packed.x86_64-latest.args
index 4e82d1880f..c5719bb1e6 100644
--- a/tests/qemuxml2argvdata/virtio-options-video-packed.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options-video-packed.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-options.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-options.x86_64-latest.args
index 66bbd7df64..e230e926a4 100644
--- a/tests/qemuxml2argvdata/virtio-options.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-options.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-rng-builtin.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-rng-builtin.x86_64-latest.args
index fe01d661e0..f8e37ce7f8 100644
--- a/tests/qemuxml2argvdata/virtio-rng-builtin.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-rng-builtin.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-rng-egd-unix.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-rng-egd-unix.x86_64-latest.args
index 37fb988b75..192d84413f 100644
--- a/tests/qemuxml2argvdata/virtio-rng-egd-unix.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-rng-egd-unix.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine pc,accel=kvm,usb=off,dump-guest-core=off \
+-machine pc,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
index 01cb9f8308..c526d7aec5 100644
--- a/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
--machine q35,accel=tcg,usb=off,dump-guest-core=off \
+-machine q35,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 214 \
+-object memory-backend-ram,id=pc.ram,size=224395264 \
 -overcommit mem-lock=off \
 -smp 1,sockets=1,cores=1,threads=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
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
index 3d9f246000..ad770d204f 100644
--- 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
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -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 \
+-machine pc-i440fx-4.2,accel=kvm,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 4096 \
+-object memory-backend-ram,id=pc.ram,size=4294967296 \
 -overcommit mem-lock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
 -uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
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
index 1066522ed5..81df0cb959 100644
--- 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
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -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 \
+-machine pc-q35-4.2,accel=kvm,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 4096 \
+-object memory-backend-ram,id=pc.ram,size=4294967296 \
 -overcommit mem-lock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
 -uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
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
index e547001eb5..ffc52d85b0 100644
--- 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
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -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 \
+-machine pc-i440fx-4.2,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 4096 \
+-object memory-backend-ram,id=pc.ram,size=4294967296 \
 -overcommit mem-lock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
 -uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
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
index 6549f6251e..eda728f1f8 100644
--- 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
@@ -12,9 +12,11 @@ QEMU_AUDIO_DRV=none \
 -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 \
+-machine pc-q35-4.2,accel=tcg,usb=off,dump-guest-core=off,\
+memory-backend=pc.ram \
 -cpu qemu64 \
 -m 4096 \
+-object memory-backend-ram,id=pc.ram,size=4294967296 \
 -overcommit mem-lock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
 -uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
diff --git a/tests/qemuxml2argvdata/x86_64-pc-graphics.x86_64-latest.args b/tests/qemuxml2argvdata/x86_64-pc-graphics.x86_64-latest.args
index 4049ee6b27..5458fc6e10 100644
--- a/tests/qemuxml2argvdata/x86_64-pc-graphics.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/x86_64-pc-graphics.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-guest/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 4096 \
+-object memory-backend-ram,id=pc.ram,size=4294967296 \
 -overcommit mem-lock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
 -uuid 2c0abd3d-8f18-42c0-a132-9708213aaac9 \
diff --git a/tests/qemuxml2argvdata/x86_64-pc-headless.x86_64-latest.args b/tests/qemuxml2argvdata/x86_64-pc-headless.x86_64-latest.args
index 47887c0c18..d2246d0a02 100644
--- a/tests/qemuxml2argvdata/x86_64-pc-headless.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/x86_64-pc-headless.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-guest/master-key.aes \
--machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 4096 \
+-object memory-backend-ram,id=pc.ram,size=4294967296 \
 -overcommit mem-lock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
 -uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
diff --git a/tests/qemuxml2argvdata/x86_64-q35-graphics.x86_64-latest.args b/tests/qemuxml2argvdata/x86_64-q35-graphics.x86_64-latest.args
index 6425325a5b..e9d4e2c320 100644
--- a/tests/qemuxml2argvdata/x86_64-q35-graphics.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/x86_64-q35-graphics.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-guest/master-key.aes \
--machine q35,accel=tcg,usb=off,dump-guest-core=off \
+-machine q35,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 4096 \
+-object memory-backend-ram,id=pc.ram,size=4294967296 \
 -overcommit mem-lock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
 -uuid 61288c03-0b0d-4f1e-9496-0f0256f2e013 \
diff --git a/tests/qemuxml2argvdata/x86_64-q35-headless.x86_64-latest.args b/tests/qemuxml2argvdata/x86_64-q35-headless.x86_64-latest.args
index 63254b500c..8bec37539f 100644
--- a/tests/qemuxml2argvdata/x86_64-q35-headless.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/x86_64-q35-headless.x86_64-latest.args
@@ -12,9 +12,10 @@ QEMU_AUDIO_DRV=none \
 -S \
 -object secret,id=masterKey0,format=raw,\
 file=/tmp/lib/domain--1-guest/master-key.aes \
--machine q35,accel=tcg,usb=off,dump-guest-core=off \
+-machine q35,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \
 -cpu qemu64 \
 -m 4096 \
+-object memory-backend-ram,id=pc.ram,size=4294967296 \
 -overcommit mem-lock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
 -uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
-- 
2.26.2


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