libxl: add support for memballoon device

All Xen PV and HVM with PV driver support a memory balloon device, which cannot be disabled through the toolstack. Model the device in the libxl driver, similar to the recently removed xend-based driver. Signed-off-by: Jim Fehlig <jfehlig@suse.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2024-12-22 05:35:25 +00:00 · 2018-04-09 18:15:17 -06:00 · 2018-04-09 18:15:17 -06:00 · dffe584aa4
commit dffe584aa4
parent 2203cea782
114 changed files with 146 additions and 0 deletions
--- a/src/libxl/libxl_conf.c
+++ b/src/libxl/libxl_conf.c
@ -626,6 +626,30 @@ libxlMakeDomBuildInfo(virDomainDefPtr def,
            return -1;
    }

+    /* only the 'xen' balloon device model is supported */
+    if (def->memballoon) {
+        int model = def->memballoon->model;
+
+        switch ((virDomainMemballoonModel)model) {
+        case VIR_DOMAIN_MEMBALLOON_MODEL_XEN:
+            break;
+        case VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO:
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                           _("unsupported balloon device model '%s'"),
+                           virDomainMemballoonModelTypeToString(model));
+            return -1;
+        case VIR_DOMAIN_MEMBALLOON_MODEL_NONE:
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                           "%s",
+                           _("balloon device cannot be disabled"));
+            return -1;
+        case VIR_DOMAIN_MEMBALLOON_MODEL_LAST:
+        default:
+            virReportEnumRangeError(virDomainMemballoonModel, model);
+            return -1;
+        }
+    }
+
    return 0;
 }

--- a/src/libxl/libxl_domain.c
+++ b/src/libxl/libxl_domain.c
@ -413,6 +413,16 @@ libxlDomainDefPostParse(virDomainDefPtr def,
            def->features[VIR_DOMAIN_FEATURE_ACPI] = VIR_TRISTATE_SWITCH_ON;
    }

+    /* add implicit balloon device */
+    if (def->memballoon == NULL) {
+        virDomainMemballoonDefPtr memballoon;
+        if (VIR_ALLOC(memballoon) < 0)
+            return -1;
+
+        memballoon->model = VIR_DOMAIN_MEMBALLOON_MODEL_XEN;
+        def->memballoon = memballoon;
+    }
+
    return 0;
 }

--- a/tests/sexpr2xmldata/sexpr2xml-boot-grub.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-boot-grub.xml
@ -24,5 +24,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-bridge-ipaddr.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-bridge-ipaddr.xml
@ -32,5 +32,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-curmem.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-curmem.xml
@ -38,5 +38,6 @@
    <video>
      <model type='xen' vram='4096' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-disk-block-shareable.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-disk-block-shareable.xml
@ -30,5 +30,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-disk-block.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-disk-block.xml
@ -25,5 +25,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-disk-drv-blktap-qcow.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-disk-drv-blktap-qcow.xml
@ -25,5 +25,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-disk-drv-blktap-raw.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-disk-drv-blktap-raw.xml
@ -25,5 +25,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-disk-drv-blktap2-raw.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-disk-drv-blktap2-raw.xml
@ -25,5 +25,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-disk-file.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-disk-file.xml
@ -25,5 +25,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-autoport.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-autoport.xml
@ -53,5 +53,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-empty-kernel.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-empty-kernel.xml
@ -46,5 +46,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-force-hpet.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-force-hpet.xml
@ -49,5 +49,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-force-nohpet.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-force-nohpet.xml
@ -49,5 +49,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-kernel.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-kernel.xml
@ -29,5 +29,6 @@
    </console>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-localtime.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-localtime.xml
@ -46,5 +46,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-net-netfront.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-net-netfront.xml
@ -47,5 +47,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-parallel-tcp.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-parallel-tcp.xml
@ -51,5 +51,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2-ports.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2-ports.xml
@ -58,5 +58,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2nd-port.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2nd-port.xml
@ -54,5 +54,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-file.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-file.xml
@ -54,5 +54,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-null.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-null.xml
@ -52,5 +52,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-pipe.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-pipe.xml
@ -54,5 +54,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-pty.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-pty.xml
@ -52,5 +52,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-stdio.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-stdio.xml
@ -52,5 +52,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp-telnet.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp-telnet.xml
@ -56,5 +56,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp.xml
@ -56,5 +56,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-udp.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-udp.xml
@ -56,5 +56,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-unix.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-unix.xml
@ -54,5 +54,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-sound-all.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-sound-all.xml
@ -48,5 +48,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-sound.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-sound.xml
@ -48,5 +48,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-usbmouse.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-usbmouse.xml
@ -47,5 +47,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-usbtablet.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-usbtablet.xml
@ -47,5 +47,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-utc.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-utc.xml
@ -46,5 +46,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv-v2.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-v2.xml
@ -46,5 +46,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-fv.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv.xml
@ -46,5 +46,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-net-bridged.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-net-bridged.xml
@ -31,5 +31,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-net-e1000.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-net-e1000.xml
@ -32,5 +32,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-net-routed.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-net-routed.xml
@ -31,5 +31,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-no-source-cdrom.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-no-source-cdrom.xml
@ -52,5 +52,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-pci-devs.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-pci-devs.xml
@ -37,5 +37,6 @@
        <address domain='0x0000' bus='0x01' slot='0x13' function='0x0'/>
      </source>
    </hostdev>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-pv-bootloader-cmdline.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-pv-bootloader-cmdline.xml
@ -25,5 +25,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-pv-bootloader.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-pv-bootloader.xml
@ -24,5 +24,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-pv-localtime.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-pv-localtime.xml
@ -25,5 +25,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-pv-vcpus.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-pv-vcpus.xml
@ -25,5 +25,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-pv-vfb-new-vncdisplay.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-pv-vfb-new-vncdisplay.xml
@ -31,5 +31,6 @@
    <video>
      <model type='xen' vram='4096' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-pv-vfb-new.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-pv-vfb-new.xml
@ -31,5 +31,6 @@
    <video>
      <model type='xen' vram='4096' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-pv-vfb-type-crash.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-pv-vfb-type-crash.xml
@ -36,5 +36,6 @@
    <video>
      <model type='xen' vram='4096' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-pv.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-pv.xml
@ -25,5 +25,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/sexpr2xmldata/sexpr2xml-vif-rate.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-vif-rate.xml
@ -50,5 +50,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-channel-pty.xml
+++ b/tests/xlconfigdata/test-channel-pty.xml
@ -29,5 +29,6 @@
    </channel>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-channel-unix.xml
+++ b/tests/xlconfigdata/test-channel-unix.xml
@ -30,5 +30,6 @@
    </channel>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-disk-positional-parms-full.xml
+++ b/tests/xlconfigdata/test-disk-positional-parms-full.xml
@ -54,5 +54,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-disk-positional-parms-partial.xml
+++ b/tests/xlconfigdata/test-disk-positional-parms-partial.xml
@ -60,5 +60,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-disk-qed.xml
+++ b/tests/xlconfigdata/test-disk-qed.xml
@ -41,5 +41,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-direct-kernel-boot-bogus-extra.xml
+++ b/tests/xlconfigdata/test-fullvirt-direct-kernel-boot-bogus-extra.xml
@ -51,5 +51,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-direct-kernel-boot-extra.xml
+++ b/tests/xlconfigdata/test-fullvirt-direct-kernel-boot-extra.xml
@ -51,5 +51,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-direct-kernel-boot.xml
+++ b/tests/xlconfigdata/test-fullvirt-direct-kernel-boot.xml
@ -51,5 +51,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-hpet-timer.xml
+++ b/tests/xlconfigdata/test-fullvirt-hpet-timer.xml
@ -60,5 +60,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-multi-timer.xml
+++ b/tests/xlconfigdata/test-fullvirt-multi-timer.xml
@ -61,5 +61,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-multiserial.xml
+++ b/tests/xlconfigdata/test-fullvirt-multiserial.xml
@ -60,5 +60,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-multiusb.xml
+++ b/tests/xlconfigdata/test-fullvirt-multiusb.xml
@ -50,5 +50,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-nestedhvm-disabled.xml
+++ b/tests/xlconfigdata/test-fullvirt-nestedhvm-disabled.xml
@ -57,5 +57,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-nestedhvm.xml
+++ b/tests/xlconfigdata/test-fullvirt-nestedhvm.xml
@ -55,5 +55,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-nohap.xml
+++ b/tests/xlconfigdata/test-fullvirt-nohap.xml
@ -58,5 +58,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-ovmf.xml
+++ b/tests/xlconfigdata/test-fullvirt-ovmf.xml
@ -54,5 +54,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-tsc-timer.xml
+++ b/tests/xlconfigdata/test-fullvirt-tsc-timer.xml
@ -60,5 +60,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-fullvirt-vnuma.xml
+++ b/tests/xlconfigdata/test-fullvirt-vnuma.xml
@ -77,5 +77,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-new-disk.xml
+++ b/tests/xlconfigdata/test-new-disk.xml
@ -54,5 +54,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-paravirt-cmdline-bogus-extra-root.xml
+++ b/tests/xlconfigdata/test-paravirt-cmdline-bogus-extra-root.xml
@ -30,5 +30,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-paravirt-cmdline-extra-root.xml
+++ b/tests/xlconfigdata/test-paravirt-cmdline-extra-root.xml
@ -30,5 +30,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-paravirt-cmdline.xml
+++ b/tests/xlconfigdata/test-paravirt-cmdline.xml
@ -30,5 +30,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-paravirt-maxvcpus.xml
+++ b/tests/xlconfigdata/test-paravirt-maxvcpus.xml
@ -26,5 +26,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-rbd-multihost-noauth.xml
+++ b/tests/xlconfigdata/test-rbd-multihost-noauth.xml
@ -51,5 +51,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-spice-features.xml
+++ b/tests/xlconfigdata/test-spice-features.xml
@ -50,5 +50,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-spice.xml
+++ b/tests/xlconfigdata/test-spice.xml
@ -50,5 +50,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-usb.xml
+++ b/tests/xlconfigdata/test-usb.xml
@ -31,5 +31,6 @@
        <address bus='1' device='3'/>
      </source>
    </hostdev>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-usbctrl.xml
+++ b/tests/xlconfigdata/test-usbctrl.xml
@ -27,5 +27,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-vif-multi-ip.xml
+++ b/tests/xlconfigdata/test-vif-multi-ip.xml
@ -44,5 +44,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-vif-rate.xml
+++ b/tests/xlconfigdata/test-vif-rate.xml
@ -57,5 +57,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xlconfigdata/test-vif-typename.xml
+++ b/tests/xlconfigdata/test-vif-typename.xml
@ -41,5 +41,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-disk-drv-blktap-raw.xml
+++ b/tests/xmconfigdata/test-disk-drv-blktap-raw.xml
@ -28,5 +28,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-disk-drv-blktap2-raw.xml
+++ b/tests/xmconfigdata/test-disk-drv-blktap2-raw.xml
@ -28,5 +28,6 @@
    </console>
    <input type='mouse' bus='xen'/>
    <input type='keyboard' bus='xen'/>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-escape-paths.xml
+++ b/tests/xmconfigdata/test-escape-paths.xml
@ -56,5 +56,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-default-feature.xml
+++ b/tests/xmconfigdata/test-fullvirt-default-feature.xml
@ -50,5 +50,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-force-hpet.xml
+++ b/tests/xmconfigdata/test-fullvirt-force-hpet.xml
@ -50,5 +50,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-force-nohpet.xml
+++ b/tests/xmconfigdata/test-fullvirt-force-nohpet.xml
@ -50,5 +50,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-localtime.xml
+++ b/tests/xmconfigdata/test-fullvirt-localtime.xml
@ -48,5 +48,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-net-netfront.xml
+++ b/tests/xmconfigdata/test-fullvirt-net-netfront.xml
@ -48,5 +48,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-new-cdrom.xml
+++ b/tests/xmconfigdata/test-fullvirt-new-cdrom.xml
@ -48,5 +48,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-nohap.xml
+++ b/tests/xmconfigdata/test-fullvirt-nohap.xml
@ -49,5 +49,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-parallel-tcp.xml
+++ b/tests/xmconfigdata/test-fullvirt-parallel-tcp.xml
@ -53,5 +53,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-serial-file.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-file.xml
@ -56,5 +56,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-serial-null.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-null.xml
@ -54,5 +54,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-serial-pipe.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-pipe.xml
@ -56,5 +56,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-serial-pty.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-pty.xml
@ -54,5 +54,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-serial-stdio.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-stdio.xml
@ -54,5 +54,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-serial-tcp-telnet.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-tcp-telnet.xml
@ -58,5 +58,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/tests/xmconfigdata/test-fullvirt-serial-tcp.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-tcp.xml
@ -58,5 +58,6 @@
    <video>
      <model type='cirrus' vram='8192' heads='1' primary='yes'/>
    </video>
+    <memballoon model='xen'/>
  </devices>
 </domain>
--- a/Show More
+++ b/Show More