From fe341d97aee2666dc378f89de4a957bc8ae35a21 Mon Sep 17 00:00:00 2001

From: Shalini Chellathurai Saroja <shalini@linux.ibm.com>

Date: Mon, 7 Jun 2021 11:34:21 +0200

Subject: [PATCH] virt-manager: enable MDEV support

Enable virt-manager GUI to support add, edit, remove, hot-plug and

hot-unplug of mediated devices (like DASDs, APQNs and PCIs) in virtual

server.

It is not possible to edit MDEV when a virtual server is in

running state, as this is not supported by libvirt.

Reviewed-by: Cole Robinson <crobinso@redhat.com>

Signed-off-by: Shalini Chellathurai Saroja <shalini@linux.ibm.com>

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1995131

(cherry picked from commit 0e15cd51dfbdaa09f7d34ed1edce2f5416130361)

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>

---

 tests/data/testdriver/testdriver.xml | 39 ++++++++++++++++++++++++++++

 tests/uitests/test_addhardware.py    |  6 +++++

 virtManager/addhardware.py           | 19 +++++++++++++-

 3 files changed, 63 insertions(+), 1 deletion(-)

diff --git a/tests/data/testdriver/testdriver.xml b/tests/data/testdriver/testdriver.xml

index b8d67bac..5875732a 100644

--- a/tests/data/testdriver/testdriver.xml

+++ b/tests/data/testdriver/testdriver.xml

@@ -3645,6 +3645,27 @@ ba</description>

   </capability>

 </device>

+<device>

+  <name>css_0_0_0023</name>

+  <path>/sys/devices/css0/0.0.0023</path>

+  <parent>computer</parent>

+  <driver>

+    <name>vfio_ccw</name>

+  </driver>

+  <capability type='css'>

+    <cssid>0x0</cssid>

+    <ssid>0x0</ssid>

+    <devno>0x0023</devno>

+    <capability type='mdev_types'>

+      <type id='vfio_ccw-io'>

+        <name>I/O subchannel (Non-QDIO)</name>

+        <deviceAPI>vfio-ccw</deviceAPI>

+        <availableInstances>0</availableInstances>

+      </type>

+    </capability>

+  </capability>

+</device>

+

 <device>

   <name>mdev_8e37ee90_2b51_45e3_9b25_bf8283c03110</name>

   <path>/sys/devices/css0/0.0.0023/8e37ee90-2b51-45e3-9b25-bf8283c03110</path>

@@ -3658,6 +3679,24 @@ ba</description>

   </capability>

 </device>

+<device>

+  <name>ap_matrix</name>

+  <path>/sys/devices/vfio_ap/matrix</path>

+  <parent>computer</parent>

+  <driver>

+    <name>vfio_ap</name>

+  </driver>

+  <capability type='ap_matrix'>

+    <capability type='mdev_types'>

+      <type id='vfio_ap-passthrough'>

+        <name>VFIO AP Passthrough Device</name>

+        <deviceAPI>vfio-ap</deviceAPI>

+        <availableInstances>65536</availableInstances>

+      </type>

+    </capability>

+  </capability>

+</device>

+

 <device>

   <name>mdev_11f92c9d_b0b0_4016_b306_a8071277f8b9</name>

   <path>/sys/devices/vfio_ap/matrix/11f92c9d-b0b0-4016-b306-a8071277f8b9</path>

diff --git a/tests/uitests/test_addhardware.py b/tests/uitests/test_addhardware.py

index ce3da57c..56acc2fa 100644

--- a/tests/uitests/test_addhardware.py

+++ b/tests/uitests/test_addhardware.py

@@ -459,6 +459,12 @@ def testAddHosts(app):

     app.click_alert_button("device is already in use by", "Yes")

     lib.utils.check(lambda: details.active)

+    # Add MDEV device

+    _open_addhw(app, details)

+    tab = _select_hw(addhw, "MDEV Host Device", "host-tab")

+    tab.find_fuzzy("mdev_8e37ee90_2b51_45e3_9b25_bf8283c03110",

+                   "table cell").click()

+    _finish(addhw, check=details)

 def testAddChars(app):

diff --git a/virtManager/addhardware.py b/virtManager/addhardware.py

index cbf19f58..13b899c3 100644

--- a/virtManager/addhardware.py

+++ b/virtManager/addhardware.py

@@ -249,6 +249,10 @@ class vmmAddHardware(vmmGObjectUI):

         add_hw_option(_("PCI Host Device"), "system-run", PAGE_HOSTDEV,

                       nodedev_enabled, nodedev_errstr, "pci")

+        add_hw_option(_("MDEV Host Device"), "system-run", PAGE_HOSTDEV,

+                      self.conn.support.conn_nodedev(),

+                      _("Connection does not support host device enumeration"),

+                      "mdev")

         add_hw_option(_("Video"), "video-display", PAGE_VIDEO, True,

                       _("Libvirt version does not support video devices."))

         add_hw_option(_("Watchdog"), "device_pci", PAGE_WATCHDOG,

@@ -656,6 +660,9 @@ class vmmAddHardware(vmmGObjectUI):

                       (dehex(hostdev.domain), dehex(hostdev.bus),

                        dehex(hostdev.slot), dehex(hostdev.function)))

+        elif hostdev.uuid:

+            label += " %s" % (str(hostdev.uuid))

+

         return label

@@ -775,6 +782,12 @@ class vmmAddHardware(vmmGObjectUI):

                     if dev.xmlobj.name == subdev.xmlobj.parent:

                         prettyname += " (%s)" % subdev.pretty_name()

+            if devtype == "mdev":

+                for parentdev in self.conn.list_nodedevs():

+                    if dev.xmlobj.parent == parentdev.xmlobj.name:

+                        prettyname = "%s %s" % (

+                                parentdev.pretty_name(), prettyname)

+

             model.append([dev.xmlobj, prettyname])

         if len(model) == 0:

@@ -981,11 +994,13 @@ class vmmAddHardware(vmmGObjectUI):

         if page == PAGE_HOSTDEV:

             # Need to do this here, since we share the hostdev page

-            # between two different HW options

+            # between different HW options

             row = self._get_hw_selection()

             devtype = "usb_device"

             if row and row[5] == "pci":

                 devtype = "pci"

+            if row and row[5] == "mdev":

+                devtype = "mdev"

             self._populate_hostdev_model(devtype)

         if page == PAGE_CONTROLLER:

@@ -1036,6 +1051,8 @@ class vmmAddHardware(vmmGObjectUI):

             row = self._get_hw_selection()

             if row and row[5] == "pci":

                 return _("PCI Device")

+            if row and row[5] == "mdev":

+                return _("MDEV Device")

             return _("USB Device")

         raise RuntimeError("Unknown page %s" % page)  # pragma: no cover

-- 

2.31.1