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qemu: format 'ramfb' attribute for mediated devices

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It's possible to use ramfb as the boot display of an assigned vgpu
device. This was introduced in 4b95738c, but unfortunately the attribute
was not formatted into the xml output for such a device. This patch
fixes that oversight and adds a xml2xml test to verify proper behavior.

https://bugzilla.redhat.com/show_bug.cgi?id=1847791

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Jonathon Jongsma 2020-06-23 13:29:56 -05:00 committed by Ján Tomko
parent 66ce769d27
commit c5815b3197
3 changed files with 48 additions and 0 deletions
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3
src/conf/domain_conf.c
View File

@ -28343,6 +28343,9 @@ virDomainHostdevDefFormat(virBufferPtr buf,
if (mdevsrc->display != VIR_TRISTATE_SWITCH_ABSENT)
virBufferAsprintf(buf, " display='%s'",
virTristateSwitchTypeToString(mdevsrc->display));
if (mdevsrc->ramfb != VIR_TRISTATE_SWITCH_ABSENT)
virBufferAsprintf(buf, " ramfb='%s'",
virTristateSwitchTypeToString(mdevsrc->ramfb));
}
}

44
tests/qemuxml2xmloutdata/hostdev-mdev-display-ramfb.x86_64-latest.xml Normal file
View File

@ -0,0 +1,44 @@
<domain type='qemu'>
<name>QEMUGuest2</name>
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>219136</memory>
<currentMemory unit='KiB'>219136</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='i686' machine='pc'>hvm</type>
<boot dev='hd'/>
</os>
<cpu mode='custom' match='exact' check='none'>
<model fallback='forbid'>qemu64</model>
</cpu>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu-system-i386</emulator>
<controller type='usb' index='0' model='piix3-uhci'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'/>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes'>
<listen type='address'/>
</graphics>
<video>
<model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<hostdev mode='subsystem' type='mdev' managed='no' model='vfio-pci' display='on' ramfb='on'>
<source>
<address uuid='53764d0e-85a0-42b4-af5c-2046b460b1dc'/>
</source>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</hostdev>
<memballoon model='none'/>
</devices>
</domain>

1
tests/qemuxml2xmltest.c
View File

@ -529,6 +529,7 @@ mymain(void)
QEMU_CAPS_VFIO_PCI_DISPLAY,
QEMU_CAPS_DEVICE_VFIO_PCI,
QEMU_CAPS_VNC);
DO_TEST_CAPS_LATEST("hostdev-mdev-display-ramfb");
DO_TEST("pci-rom", NONE);
DO_TEST("pci-rom-disabled", NONE);
DO_TEST("pci-rom-disabled-invalid", NONE);