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From 9a993a7d566b7acdc548c1f0114b99fe17ba3c12 Mon Sep 17 00:00:00 2001
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Message-Id: <9a993a7d566b7acdc548c1f0114b99fe17ba3c12@dist-git>
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From: Jonathon Jongsma <jjongsma@redhat.com>
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Date: Fri, 4 Dec 2020 15:02:42 -0600
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Subject: [PATCH] qemu: format 'ramfb' attribute for mediated devices
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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It's possible to use ramfb as the boot display of an assigned vgpu
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device. This was introduced in 4b95738c, but unfortunately the attribute
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was not formatted into the xml output for such a device. This patch
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fixes that oversight and adds a xml2xml test to verify proper behavior.
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https://bugzilla.redhat.com/show_bug.cgi?id=1847791
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(the expected test results were massaged slightly due to the fact that
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commit 3b8feb4793cef66f5dbfb9bdabe4d40834f1e90e is not present in this
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build).
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Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
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Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Signed-off-by: Ján Tomko <jtomko@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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(cherry picked from commit c5815b31976f3982d18c7f6c1367ab6e403eb7eb)
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https://bugzilla.redhat.com/show_bug.cgi?id=1876297
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Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
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Message-Id: <20201204210242.822641-2-jjongsma@redhat.com>
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Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
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---
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 src/conf/domain_conf.c                        |  3 ++
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 ...stdev-mdev-display-ramfb.x86_64-latest.xml | 41 +++++++++++++++++++
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 tests/qemuxml2xmltest.c                       |  1 +
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 3 files changed, 45 insertions(+)
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 create mode 100644 tests/qemuxml2xmloutdata/hostdev-mdev-display-ramfb.x86_64-latest.xml
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diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
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index cd5c15f297..c5a0442c6f 100644
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--- a/src/conf/domain_conf.c
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+++ b/src/conf/domain_conf.c
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@@ -27603,6 +27603,9 @@ virDomainHostdevDefFormat(virBufferPtr buf,
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             if (mdevsrc->display != VIR_TRISTATE_SWITCH_ABSENT)
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                 virBufferAsprintf(buf, " display='%s'",
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                                   virTristateSwitchTypeToString(mdevsrc->display));
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+            if (mdevsrc->ramfb != VIR_TRISTATE_SWITCH_ABSENT)
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+                virBufferAsprintf(buf, " ramfb='%s'",
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+                                  virTristateSwitchTypeToString(mdevsrc->ramfb));
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         }
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     }
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diff --git a/tests/qemuxml2xmloutdata/hostdev-mdev-display-ramfb.x86_64-latest.xml b/tests/qemuxml2xmloutdata/hostdev-mdev-display-ramfb.x86_64-latest.xml
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new file mode 100644
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index 0000000000..90c49842a5
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--- /dev/null
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+++ b/tests/qemuxml2xmloutdata/hostdev-mdev-display-ramfb.x86_64-latest.xml
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@@ -0,0 +1,41 @@
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+<domain type='qemu'>
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+  <name>QEMUGuest2</name>
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+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
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+  <memory unit='KiB'>219136</memory>
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+  <currentMemory unit='KiB'>219136</currentMemory>
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+  <vcpu placement='static'>1</vcpu>
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+  <os>
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+    <type arch='i686' machine='pc'>hvm</type>
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+    <boot dev='hd'/>
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+  </os>
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+  <clock offset='utc'/>
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+  <on_poweroff>destroy</on_poweroff>
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+  <on_reboot>restart</on_reboot>
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+  <on_crash>destroy</on_crash>
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+  <devices>
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+    <emulator>/usr/bin/qemu-system-i386</emulator>
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+    <controller type='usb' index='0' model='piix3-uhci'>
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+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
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+    </controller>
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+    <controller type='pci' index='0' model='pci-root'/>
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+    <controller type='ide' index='0'>
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+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
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+    </controller>
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+    <input type='mouse' bus='ps2'/>
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+    <input type='keyboard' bus='ps2'/>
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+    <graphics type='vnc' port='-1' autoport='yes'>
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+      <listen type='address'/>
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+    </graphics>
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+    <video>
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+      <model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
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+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
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+    </video>
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+    <hostdev mode='subsystem' type='mdev' managed='no' model='vfio-pci' display='on' ramfb='on'>
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+      <source>
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+        <address uuid='53764d0e-85a0-42b4-af5c-2046b460b1dc'/>
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+      </source>
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+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
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+    </hostdev>
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+    <memballoon model='none'/>
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+  </devices>
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+</domain>
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diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
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index f790bbc6f1..60efcac6c8 100644
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--- a/tests/qemuxml2xmltest.c
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+++ b/tests/qemuxml2xmltest.c
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@@ -524,6 +524,7 @@ mymain(void)
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             QEMU_CAPS_VFIO_PCI_DISPLAY,
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             QEMU_CAPS_DEVICE_VFIO_PCI,
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             QEMU_CAPS_VNC);
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+    DO_TEST_CAPS_LATEST("hostdev-mdev-display-ramfb");
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     DO_TEST("pci-rom", NONE);
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     DO_TEST("pci-rom-disabled", NONE);
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     DO_TEST("pci-rom-disabled-invalid", NONE);
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-- 
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2.29.2
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