[PATCH 4/6] conf: new <hotplug require='yes|no'/> element for hotpluggable devices

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When faced with a guest device that requires a PCI address but doesn't
have one manually assigned in the config, libvirt has always insisted
(well... *tried* to insist) on auto-assigning an address that is on a
PCI controller that supports hotplug. One big problem with this is
that it prevents automatic use of a Q35 (or aarch64/virt) machine's
pcie-root (since the PCIe root complex doesn't support hotplug).

In order to promote simpler domain configs (more devices on pcie-root
rather than on a pci-bridge), this patch adds a new sub-element to all
guest devices that have a PCI address and support hotplug:

  <hotplug require='no'/>

For devices that have hotplug require='no', we turn off the
VIR_PCI_CONNECT_HOGPLUGGABLE bit in the devFlags when searching for an
available PCI address. Since pcie-root now allows standard PCI
devices, this results in those devices being placed on pcie-root
rather than pci-bridge.

NB: According to the code in qemuDomainAssignDevicePCISlots()
and qemuDomainAttachDeviceLive(), the following device types are the
only ones that use a PCI address *and* support hotplug:

  <interface>
  <hostdev>
  <rng>
  <serial>
  <disk> (only virtio)
  <controller> (hotplug only for SCSI controllers)

These devices use a PCI address, but don't support hotplug, so the RNG
doesn't allow them to have a <hotplug> element:

  <filesystem>
  <sound>
  <balloon>
  <watchdog>
  <video>
  <shmem>
  <input>
---
 docs/formatdomain.html.in                          |  37 ++++++++
 docs/schemas/domaincommon.rng                      |  17 ++++
 src/conf/device_conf.h                             |  15 +++
 src/conf/domain_addr.c                             |   7 ++
 src/conf/domain_conf.c                             |  28 ++++++
 .../qemuxml2argv-q35-hotpluggable.args             |  50 ++++++++++
 .../qemuxml2argv-q35-hotpluggable.xml              |  62 +++++++++++++
 tests/qemuxml2argvtest.c                           |   8 ++
 .../qemuxml2xmlout-q35-hotpluggable.xml            | 103 +++++++++++++++++++++
 tests/qemuxml2xmltest.c                            |   5 +
 10 files changed, 332 insertions(+)
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-q35-hotpluggable.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-q35-hotpluggable.xml
 create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-hotpluggable.xml

diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index eddb8dd..d5292f1 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -3038,6 +3038,43 @@
         assign a PCI address for the device rather than some other
         type of address that may also be appropriate for that same
         device (e.g. virtio-mmio).
+        <p>
+          If a device that needs a PCI address doesn't have one
+          explicitly provided in the XML configuration, libvirt will
+          automatically assign an appropriate address before saving
+          the configuration. During this automatic assignment, if a
+          device supports being hotplugged/unplugged (attaching and
+          detaching the device while the virtual machine is running)
+          libirt's default behavior is to assign that device to a slot
+          on a PCI controller that also supports having its devices
+          hotplugged/unplugged. <i>(In the qemu driver as of libvirt
+          2.2.0, these devices can be hotplugged: &lt;interface&gt;,
+          &lt;hostdev&gt;, &lt;rng&gt;, &lt;disk&gt; (virtio-only),
+          &lt;controller&gt; (SCSI controllers only), and
+          &lt;serial&gt; (PCI serial only). Likewise, the following
+          PCI controller models support having their connected devices
+          hotplugged: pci-root, pci-bridge, pci-expander-bus,
+          pcie-root-bus, and pcie-switch-downstream-port.)</i> To allow
+          auto-assigning hotpluggable devices to PCI controllers that
+          don't support hotplug (for example, to assign the device to
+          pcie-root), those devices that support hotplug can have an
+          optional
+          <code>&lt;hotplug&gt;</code> element with a single
+          attribute <code>require</code> that can be used to inform
+          libvirt that this particular device <b>will not</b> require
+          hotplugging; libvirt will then look for open slots in all
+          appropriate controllers regardless of whether or not they
+          support hotplug.
+        </p>
+        <pre>
+  ...
+    &lt;interface type='network'&gt;
+      &lt;source network='default'/&gt;
+      &lt;mac address='52:54:00:5d:c7:9e'/&gt;
+      &lt;hotplug require='no'/&gt;
+    &lt;/interface&gt;
+  ...</pre>
+
       </dd>
       <dt><code>drive</code></dt>
       <dd>Drive addresses have the following additional
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 052f28c..e45bec1 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -1171,6 +1171,7 @@
       <optional>
         <ref name="alias"/>
       </optional>
+      <ref name="hotplug"/>
       <optional>
         <ref name="address"/>
       </optional>
@@ -1745,6 +1746,7 @@
         <optional>
           <ref name="alias"/>
         </optional>
+        <ref name="hotplug"/>
         <optional>
           <ref name="address"/>
         </optional>
@@ -2619,6 +2621,7 @@
       <optional>
         <ref name="alias"/>
       </optional>
+      <ref name="hotplug"/>
       <optional>
         <ref name="address"/>
       </optional>
@@ -3274,6 +3277,7 @@
       <optional>
         <ref name="alias"/>
       </optional>
+      <ref name="hotplug"/>
       <optional>
         <ref name="address"/>
       </optional>
@@ -3877,6 +3881,7 @@
         <optional>
           <ref name="rom"/>
         </optional>
+        <ref name="hotplug"/>
         <optional>
           <ref name="address"/>
         </optional>
@@ -4717,6 +4722,17 @@
     </element>
   </define>
 
+  <define name="hotplug">
+    <optional>
+      <element name="hotplug">
+        <attribute name="require">
+          <ref name="virYesNo"/>
+        </attribute>
+        <empty/>
+      </element>
+    </optional>
+  </define>
+
   <define name="memorydev">
     <element name="memory">
       <attribute name="model">
@@ -4786,6 +4802,7 @@
         <optional>
           <ref name="alias"/>
         </optional>
+        <ref name="hotplug"/>
         <optional>
           <ref name="address"/>
         </optional>
diff --git a/src/conf/device_conf.h b/src/conf/device_conf.h
index 8443de6..236bc96 100644
--- a/src/conf/device_conf.h
+++ b/src/conf/device_conf.h
@@ -142,6 +142,21 @@ typedef struct _virDomainDeviceInfo {
     /* bootIndex is only used for disk, network interface, hostdev
      * and redirdev devices */
     unsigned int bootIndex;
+    /* hotpluggable values:
+
+     * "no" -  there is definitely no need for this device to be in a
+     *         slot that supports hotplug.
+     *
+     * "yes" - assume hotplugging is required and refuse to put in any
+     *         slot that doesn't support hotplug. (if the device
+     *         itself doesn't support hotplug, that is an error)
+     *
+     * unspecified - the device can *manually* be placed in a
+     *         non-hotpluggable slot, but that won't be automatically
+     *         done (unless the device itself doesn't support
+     *         hotplug).
+     */
+    int hotpluggable; /* virTristateBool */
 } virDomainDeviceInfo, *virDomainDeviceInfoPtr;
 
 
diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index 5533b11..8f2a78f 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -709,6 +709,13 @@ virDomainPCIAddressReserveNextSlot(virDomainPCIAddressSetPtr addrs,
                                    virDomainPCIConnectFlags flags)
 {
     virPCIDeviceAddress addr;
+
+    /* if config says to no require hotplug, then don't check for
+     * it when looking for an open address.
+     */
+    if (dev->hotpluggable == VIR_TRISTATE_BOOL_NO)
+       flags &= ~VIR_PCI_CONNECT_HOTPLUGGABLE;
+
     if (virDomainPCIAddressGetNextSlot(addrs, &addr, flags) < 0)
         return -1;
 
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 82876f3..8ebbca9 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -4765,6 +4765,18 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
         virBufferAddLit(buf, "/>\n");
     }
 
+    if (info->hotpluggable) {
+        const char *require = virTristateBoolTypeToString(info->hotpluggable);
+
+        if (!require) {
+            virReportError(VIR_ERR_INTERNAL_ERROR,
+                           _("unexpected hotplug require value %d"),
+                           info->hotpluggable);
+            return -1;
+        }
+        virBufferAsprintf(buf, "<hotplug require='%s'/>\n", require);
+    }
+
     if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE ||
         info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390)
         return 0;
@@ -5277,6 +5289,7 @@ virDomainDeviceInfoParseXML(xmlNodePtr node,
     xmlNodePtr alias = NULL;
     xmlNodePtr boot = NULL;
     xmlNodePtr rom = NULL;
+    xmlNodePtr hotplug = NULL;
     char *type = NULL;
     int ret = -1;
 
@@ -5303,6 +5316,9 @@ virDomainDeviceInfoParseXML(xmlNodePtr node,
                        (flags & VIR_DOMAIN_DEF_PARSE_ALLOW_ROM) &&
                        xmlStrEqual(cur->name, BAD_CAST "rom")) {
                 rom = cur;
+            } else if (hotplug == NULL &&
+                       xmlStrEqual(cur->name, BAD_CAST "hotplug")) {
+                hotplug = cur;
             }
         }
         cur = cur->next;
@@ -5335,6 +5351,18 @@ virDomainDeviceInfoParseXML(xmlNodePtr node,
         info->romfile = virXMLPropString(rom, "file");
     }
 
+    if (hotplug) {
+        char *require = virXMLPropString(hotplug, "require");
+        if (require &&
+            ((info->hotpluggable = virTristateBoolTypeFromString(require)) <= 0)) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                           _("unknown hotplug require value '%s'"), require);
+            VIR_FREE(require);
+            goto cleanup;
+        }
+        VIR_FREE(require);
+    }
+
     if (!address)
         return 0;
 
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-q35-hotpluggable.args b/tests/qemuxml2argvdata/qemuxml2argv-q35-hotpluggable.args
new file mode 100644
index 0000000..0020bfe
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-q35-hotpluggable.args
@@ -0,0 +1,50 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/libexec/qemu-kvm \
+-name q35-test \
+-S \
+-M q35 \
+-m 2048 \
+-smp 2,sockets=2,cores=1,threads=1 \
+-uuid 11dbdcdd-4c3b-482b-8903-9bdb8c0a2774 \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-q35-test/monitor.sock,server,nowait \
+-no-acpi \
+-boot c \
+-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
+-device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x1d.0x7 \
+-device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,\
+addr=0x1d \
+-device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pcie.0,addr=0x1d.0x1 \
+-device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pcie.0,addr=0x1d.0x2 \
+-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-sata0-0-0 \
+-device ide-drive,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0 \
+-drive file=/dev/HostVG/QEMUGuest2,format=raw,if=none,id=drive-virtio-disk1 \
+-device virtio-blk-pci,bus=pci.2,addr=0x3,drive=drive-virtio-disk1,\
+id=virtio-disk1 \
+-drive file=/dev/HostVG/QEMUGuest2,format=raw,if=none,id=drive-virtio-disk2 \
+-device virtio-blk-pci,bus=pcie.0,addr=0x4,drive=drive-virtio-disk2,\
+id=virtio-disk2 \
+-device rtl8139,vlan=0,id=net0,mac=00:11:22:33:44:55,bus=pci.2,addr=0x1 \
+-net user,vlan=0,name=hostnet0 \
+-device rtl8139,vlan=1,id=net1,mac=00:11:22:33:44:55,bus=pcie.0,addr=0x2 \
+-net user,vlan=1,name=hostnet1 \
+-device virtio-net-pci,vlan=2,id=net2,mac=00:11:22:33:44:55,bus=pci.2,addr=0x2 \
+-net user,vlan=2,name=hostnet2 \
+-device virtio-net-pci,vlan=3,id=net3,mac=00:11:22:33:44:55,bus=pcie.0,\
+addr=0x3 \
+-net user,vlan=3,name=hostnet3 \
+-vga qxl \
+-global qxl-vga.ram_size=67108864 \
+-global qxl-vga.vram_size=33554432 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.2,addr=0x4 \
+-object rng-random,id=objrng0,filename=/dev/random \
+-device virtio-rng-pci,rng=objrng0,id=rng0,bus=pcie.0,addr=0x5 \
+-object rng-random,id=objrng1,filename=/dev/random \
+-device virtio-rng-pci,rng=objrng1,id=rng1,bus=pci.2,addr=0x5
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-q35-hotpluggable.xml b/tests/qemuxml2argvdata/qemuxml2argv-q35-hotpluggable.xml
new file mode 100644
index 0000000..5c826ba
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-q35-hotpluggable.xml
@@ -0,0 +1,62 @@
+<domain type='qemu'>
+  <name>q35-test</name>
+  <uuid>11dbdcdd-4c3b-482b-8903-9bdb8c0a2774</uuid>
+  <memory unit='KiB'>2097152</memory>
+  <currentMemory unit='KiB'>2097152</currentMemory>
+  <vcpu placement='static' cpuset='0-1'>2</vcpu>
+  <os>
+    <type arch='x86_64' machine='q35'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/libexec/qemu-kvm</emulator>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='sda' bus='sata'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest2'/>
+      <target dev='vdb' bus='virtio'/>
+    </disk>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest2'/>
+      <target dev='vdc' bus='virtio'/>
+      <hotplug require='no'/>
+    </disk>
+    <video>
+      <model type='qxl' ram='65536' vram='32768' vgamem='8192' heads='1'/>
+    </video>
+    <interface type='user'>
+      <mac address='00:11:22:33:44:55'/>
+      <model type='rtl8139'/>
+    </interface>
+    <interface type='user'>
+      <mac address='00:11:22:33:44:55'/>
+      <model type='rtl8139'/>
+      <hotplug require='no'/>
+    </interface>
+    <interface type='user'>
+      <mac address='00:11:22:33:44:55'/>
+      <model type='virtio'/>
+    </interface>
+    <interface type='user'>
+      <mac address='00:11:22:33:44:55'/>
+      <model type='virtio'/>
+      <hotplug require='no'/>
+    </interface>
+    <rng model='virtio'>
+      <hotplug require='no'/>
+      <backend model='random'>/dev/random</backend>
+    </rng>
+    <rng model='virtio'>
+      <hotplug require='yes'/>
+      <backend model='random'>/dev/random</backend>
+    </rng>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 2de4f0a..2be634c 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1677,6 +1677,14 @@ mymain(void)
             QEMU_CAPS_PCI_MULTIFUNCTION, QEMU_CAPS_ICH9_USB_EHCI1,
             QEMU_CAPS_DEVICE_VIDEO_PRIMARY,
             QEMU_CAPS_VGA_QXL, QEMU_CAPS_DEVICE_QXL);
+    DO_TEST("q35-hotpluggable",
+            QEMU_CAPS_DEVICE_PCI_BRIDGE,
+            QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE,
+            QEMU_CAPS_ICH9_AHCI,
+            QEMU_CAPS_PCI_MULTIFUNCTION, QEMU_CAPS_ICH9_USB_EHCI1,
+            QEMU_CAPS_DEVICE_VIDEO_PRIMARY,
+            QEMU_CAPS_VGA_QXL, QEMU_CAPS_DEVICE_QXL,
+            QEMU_CAPS_DEVICE_VIRTIO_RNG, QEMU_CAPS_OBJECT_RNG_RANDOM);
     DO_TEST("pcie-root-port",
             QEMU_CAPS_DEVICE_PCI_BRIDGE,
             QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE,
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-hotpluggable.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-hotpluggable.xml
new file mode 100644
index 0000000..e771125
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-q35-hotpluggable.xml
@@ -0,0 +1,103 @@
+<domain type='qemu'>
+  <name>q35-test</name>
+  <uuid>11dbdcdd-4c3b-482b-8903-9bdb8c0a2774</uuid>
+  <memory unit='KiB'>2097152</memory>
+  <currentMemory unit='KiB'>2097152</currentMemory>
+  <vcpu placement='static' cpuset='0-1'>2</vcpu>
+  <os>
+    <type arch='x86_64' machine='q35'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/libexec/qemu-kvm</emulator>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='sda' bus='sata'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest2'/>
+      <target dev='vdb' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x03' function='0x0'/>
+    </disk>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest2'/>
+      <target dev='vdc' bus='virtio'/>
+      <hotplug require='no'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </disk>
+    <controller type='usb' index='0' model='ich9-ehci1'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x7'/>
+    </controller>
+    <controller type='usb' index='0' model='ich9-uhci1'>
+      <master startport='0'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x0' multifunction='on'/>
+    </controller>
+    <controller type='usb' index='0' model='ich9-uhci2'>
+      <master startport='2'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x1'/>
+    </controller>
+    <controller type='usb' index='0' model='ich9-uhci3'>
+      <master startport='4'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x2'/>
+    </controller>
+    <controller type='sata' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
+    </controller>
+    <controller type='pci' index='0' model='pcie-root'/>
+    <controller type='pci' index='1' model='dmi-to-pci-bridge'>
+      <model name='i82801b11-bridge'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x1e' function='0x0'/>
+    </controller>
+    <controller type='pci' index='2' model='pci-bridge'>
+      <model name='pci-bridge'/>
+      <target chassisNr='2'/>
+      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
+    </controller>
+    <interface type='user'>
+      <mac address='00:11:22:33:44:55'/>
+      <model type='rtl8139'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/>
+    </interface>
+    <interface type='user'>
+      <mac address='00:11:22:33:44:55'/>
+      <model type='rtl8139'/>
+      <hotplug require='no'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </interface>
+    <interface type='user'>
+      <mac address='00:11:22:33:44:55'/>
+      <model type='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x02' function='0x0'/>
+    </interface>
+    <interface type='user'>
+      <mac address='00:11:22:33:44:55'/>
+      <model type='virtio'/>
+      <hotplug require='no'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </interface>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <video>
+      <model type='qxl' ram='65536' vram='32768' vgamem='8192' heads='1' primary='yes'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
+    </video>
+    <memballoon model='virtio'>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x04' function='0x0'/>
+    </memballoon>
+    <rng model='virtio'>
+      <backend model='random'>/dev/random</backend>
+      <hotplug require='no'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
+    </rng>
+    <rng model='virtio'>
+      <backend model='random'>/dev/random</backend>
+      <hotplug require='yes'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x05' function='0x0'/>
+    </rng>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 7601a5f..2d8145b 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -691,6 +691,11 @@ mymain(void)
             QEMU_CAPS_ICH9_AHCI, QEMU_CAPS_PCI_MULTIFUNCTION,
             QEMU_CAPS_ICH9_USB_EHCI1, QEMU_CAPS_DEVICE_VIDEO_PRIMARY,
             QEMU_CAPS_VGA_QXL, QEMU_CAPS_DEVICE_QXL);
+    DO_TEST("q35-hotpluggable",
+            QEMU_CAPS_DEVICE_PCI_BRIDGE, QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE,
+            QEMU_CAPS_ICH9_AHCI, QEMU_CAPS_PCI_MULTIFUNCTION,
+            QEMU_CAPS_ICH9_USB_EHCI1, QEMU_CAPS_DEVICE_VIDEO_PRIMARY,
+            QEMU_CAPS_VGA_QXL, QEMU_CAPS_DEVICE_QXL);
 
     DO_TEST("pcie-root",
             QEMU_CAPS_DEVICE_PCI_BRIDGE, QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE,
-- 
2.7.4

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