[libvirt PATCH v3 1/2] qemu: ramfb video device doesn't support PCI address
Although a ramfb video device is not a PCI device, we don't currently
report an error for ramfb device definitions containing a PCI address.
However, a guest configured with such a device will fail to start:
# virsh start test1
error: Failed to start domain test1
error: internal error: qemu unexpectedly closed the monitor:
2020-06-16T05:23:02.759221Z qemu-kvm: -device ramfb,id=video0,bus=pcie.0,addr=0x1: Device
'ramfb' can't go on PCIE bus
A better approach is to reject any device definitions that contain PCI
addresses. While this is a change in behavior, any existing
configurations were non-functional.
https://bugzilla.redhat.com/show_bug.cgi?id=1847259
Signed-off-by: Jonathon Jongsma <jjongsma(a)redhat.com>
---
src/qemu/qemu_validate.c | 8 +++++
...video-ramfb-display-device-pci-address.xml | 30 +++++++++++++++++++
tests/qemuxml2argvtest.c | 1 +
3 files changed, 39 insertions(+)
create mode 100644 tests/qemuxml2argvdata/video-ramfb-display-device-pci-address.xml
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index 5082a29dc7..b13c03759e 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -1925,6 +1925,14 @@ qemuValidateDomainDeviceDefVideo(const virDomainVideoDef *video,
if (qemuValidateDomainVirtioOptions(video->virtio, qemuCaps) < 0)
return -1;
+ if (video->type == VIR_DOMAIN_VIDEO_TYPE_RAMFB &&
+ video->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("'address' is not supported for 'ramfb'
video devices"));
+ return -1;
+ }
+
+
return 0;
}
diff --git a/tests/qemuxml2argvdata/video-ramfb-display-device-pci-address.xml
b/tests/qemuxml2argvdata/video-ramfb-display-device-pci-address.xml
new file mode 100644
index 0000000000..db110560ac
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-ramfb-display-device-pci-address.xml
@@ -0,0 +1,30 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <vcpu>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>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/bin/qemu-system-i386</emulator>
+ <disk type='file' device='disk'>
+ <driver name='qemu' type='qcow2' cache='none'/>
+ <source file='/var/lib/libvirt/images/QEMUGuest1'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0'
target='0' unit='0'/>
+ </disk>
+ <controller type='ide' index='0'/>
+ <video>
+ <model type='ramfb' />
+ <address type='pci' domain='0x000' bus='0x00'
slot='0x02' function='0x0'/>
+ </video>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 1195f9c982..f2522fa530 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -2276,6 +2276,7 @@ mymain(void)
QEMU_CAPS_VIRTIO_GPU_MAX_OUTPUTS);
DO_TEST_CAPS_LATEST("video-bochs-display-device");
DO_TEST_CAPS_LATEST("video-ramfb-display-device");
+ DO_TEST_CAPS_LATEST_PARSE_ERROR("video-ramfb-display-device-pci-address");
DO_TEST("video-none-device",
QEMU_CAPS_VNC);
DO_TEST_PARSE_ERROR("video-invalid-multiple-devices", NONE);
--
2.21.3