This can improve performance for some guests since it reduces copying of
display data between host and guest. Requires udmabuf on the host.
Signed-off-by: Jonathon Jongsma <jjongsma@xxxxxxxxxx>
---
src/qemu/qemu_cgroup.c | 22 ++++++----
src/qemu/qemu_command.c | 3 ++
src/qemu/qemu_domain.h | 1 +
src/qemu/qemu_namespace.c | 22 ++++++++++
src/qemu/qemu_validate.c | 9 ++++
.../video-virtio-blob-absent.args | 34 +++++++++++++++
.../video-virtio-blob-absent.xml | 33 +++++++++++++++
.../video-virtio-blob-off.args | 34 +++++++++++++++
.../video-virtio-blob-off.xml | 33 +++++++++++++++
.../video-virtio-blob-on.args | 34 +++++++++++++++
.../qemuxml2argvdata/video-virtio-blob-on.xml | 33 +++++++++++++++
.../video-virtio-vga-blob-on.args | 34 +++++++++++++++
.../video-virtio-vga-blob-on.xml | 33 +++++++++++++++
tests/qemuxml2argvtest.c | 12 ++++++
.../video-virtio-blob-absent.xml | 41 +++++++++++++++++++
.../video-virtio-blob-off.xml | 41 +++++++++++++++++++
.../video-virtio-blob-on.xml | 41 +++++++++++++++++++
.../video-virtio-vga-blob-on.xml | 41 +++++++++++++++++++
tests/qemuxml2xmltest.c | 12 ++++++
19 files changed, 506 insertions(+), 7 deletions(-)
create mode 100644 tests/qemuxml2argvdata/video-virtio-blob-absent.args
create mode 100644 tests/qemuxml2argvdata/video-virtio-blob-absent.xml
create mode 100644 tests/qemuxml2argvdata/video-virtio-blob-off.args
create mode 100644 tests/qemuxml2argvdata/video-virtio-blob-off.xml
create mode 100644 tests/qemuxml2argvdata/video-virtio-blob-on.args
create mode 100644 tests/qemuxml2argvdata/video-virtio-blob-on.xml
create mode 100644 tests/qemuxml2argvdata/video-virtio-vga-blob-on.args
create mode 100644 tests/qemuxml2argvdata/video-virtio-vga-blob-on.xml
create mode 100644 tests/qemuxml2xmloutdata/video-virtio-blob-absent.xml
create mode 100644 tests/qemuxml2xmloutdata/video-virtio-blob-off.xml
create mode 100644 tests/qemuxml2xmloutdata/video-virtio-blob-on.xml
create mode 100644 tests/qemuxml2xmloutdata/video-virtio-vga-blob-on.xml
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index aa0c927578..659d81042a 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -557,16 +557,24 @@ qemuSetupVideoCgroup(virDomainObj *vm,
{
qemuDomainObjPrivate *priv = vm->privateData;
virDomainVideoAccelDef *accel = def->accel;
+ int ret;
- if (!accel)
- return 0;
-
- if (!accel->rendernode ||
- !virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_DEVICES))
+ if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_DEVICES))
return 0;
- return qemuCgroupAllowDevicePath(vm, accel->rendernode,
- VIR_CGROUP_DEVICE_RW, false);
+ if (accel && accel->rendernode) {
+ ret = qemuCgroupAllowDevicePath(vm, accel->rendernode,
+ VIR_CGROUP_DEVICE_RW, false);
+ if (ret != 0)
+ return ret;
+ }
+ if (def->blob == VIR_TRISTATE_SWITCH_ON) {
+ ret = qemuCgroupAllowDevicePath(vm, QEMU_DEV_UDMABUF,
+ VIR_CGROUP_DEVICE_RW, false);
+ if (ret != 0)
+ return ret;
+ }
+ return 0;
}
static int
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 8eac8edd79..898941d935 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -4904,6 +4904,9 @@ qemuBuildDeviceVideoCmd(virCommand *cmd,
"p:vgamem", video->vram * 1024,
NULL) < 0)
return -1;
+ } else if (video->type == VIR_DOMAIN_VIDEO_TYPE_VIRTIO) {
+ if (virJSONValueObjectAdd(&props, "T:blob", video->blob, NULL) < 0)
+ return -1;
}
if (video->res) {
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index c7125722e0..714cbb7d44 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -85,6 +85,7 @@ struct _qemuDomainUnpluggingDevice {
#define QEMU_DEV_VFIO "/dev/vfio/vfio"
#define QEMU_DEV_SEV "/dev/sev"
#define QEMU_DEVICE_MAPPER_CONTROL_PATH "/dev/mapper/control"
+#define QEMU_DEV_UDMABUF "/dev/udmabuf"
#define QEMU_DOMAIN_AES_IV_LEN 16 /* 16 bytes for 128 bit random */
diff --git a/src/qemu/qemu_namespace.c b/src/qemu/qemu_namespace.c
index 23681b14a4..6e28023281 100644
--- a/src/qemu/qemu_namespace.c
+++ b/src/qemu/qemu_namespace.c
@@ -485,6 +485,25 @@ qemuDomainSetupAllGraphics(virDomainObj *vm,
}
+static int
+qemuDomainSetupAllVideos(virDomainObj *vm,
+ GSList **paths)
+{
+ size_t i;
+
+ VIR_DEBUG("Setting up video devices");
+ for (i = 0; i < vm->def->nvideos; i++) {
+ virDomainVideoDef *video = vm->def->videos[i];
+ if (video->blob == VIR_TRISTATE_SWITCH_ON) {
+ *paths = g_slist_prepend(*paths, g_strdup(QEMU_DEV_UDMABUF));
+ break;
+ }
+ }
+
+ return 0;
+}
+
+
static int
qemuDomainSetupInput(virDomainInputDef *input,
GSList **paths)
@@ -654,6 +673,9 @@ qemuDomainBuildNamespace(virQEMUDriverConfig *cfg,
if (qemuDomainSetupAllGraphics(vm, &paths) < 0)
return -1;
+ if (qemuDomainSetupAllVideos(vm, &paths) < 0)
+ return -1;
+
if (qemuDomainSetupAllInputs(vm, &paths) < 0)
return -1;
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index 094ebce9c6..5bbd26673b 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -2592,6 +2592,15 @@ qemuValidateDomainDeviceDefVideo(const virDomainVideoDef *video,
}
}
+ if (video->type == VIR_DOMAIN_VIDEO_TYPE_VIRTIO) {
+ if (video->blob != VIR_TRISTATE_SWITCH_ABSENT &&
+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_GPU_BLOB)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("this QEMU does not support 'blob' for virtio-gpu devices"));
+ return -1;
+ }
+ }
+
if (qemuValidateDomainVirtioOptions(video->virtio, qemuCaps) < 0)
return -1;
diff --git a/tests/qemuxml2argvdata/video-virtio-blob-absent.args b/tests/qemuxml2argvdata/video-virtio-blob-absent.args
new file mode 100644
index 0000000000..012f8e50b9
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-virtio-blob-absent.args
@@ -0,0 +1,34 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i386 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
+-machine pc,usb=off,dump-guest-core=off \
+-accel tcg \
+-m 1024 \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot strict=on \
+-usb \
+-drive file=/var/lib/libvirt/images/QEMUGuest1,format=qcow2,if=none,id=drive-ide0-0-0,cache=none \
+-device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 \
+-device virtio-gpu-pci,id=video0,max_outputs=1,bus=pci.0,addr=0x2 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/video-virtio-blob-absent.xml b/tests/qemuxml2argvdata/video-virtio-blob-absent.xml
new file mode 100644
index 0000000000..a9354d77a2
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-virtio-blob-absent.xml
@@ -0,0 +1,33 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <vcpu placement='static'>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'/>
+ <controller type='usb' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <video>
+ <model type='virtio' heads='1'/>
+ </video>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/video-virtio-blob-off.args b/tests/qemuxml2argvdata/video-virtio-blob-off.args
new file mode 100644
index 0000000000..9af5227dd7
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-virtio-blob-off.args
@@ -0,0 +1,34 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i386 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
+-machine pc,usb=off,dump-guest-core=off \
+-accel tcg \
+-m 1024 \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot strict=on \
+-usb \
+-drive file=/var/lib/libvirt/images/QEMUGuest1,format=qcow2,if=none,id=drive-ide0-0-0,cache=none \
+-device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 \
+-device virtio-gpu-pci,id=video0,max_outputs=1,blob=off,bus=pci.0,addr=0x2 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/video-virtio-blob-off.xml b/tests/qemuxml2argvdata/video-virtio-blob-off.xml
new file mode 100644
index 0000000000..7b51762e9a
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-virtio-blob-off.xml
@@ -0,0 +1,33 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <vcpu placement='static'>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'/>
+ <controller type='usb' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <video>
+ <model type='virtio' heads='1' blob='off'/>
+ </video>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/video-virtio-blob-on.args b/tests/qemuxml2argvdata/video-virtio-blob-on.args
new file mode 100644
index 0000000000..e09f5a6aed
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-virtio-blob-on.args
@@ -0,0 +1,34 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i386 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
+-machine pc,usb=off,dump-guest-core=off \
+-accel tcg \
+-m 1024 \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot strict=on \
+-usb \
+-drive file=/var/lib/libvirt/images/QEMUGuest1,format=qcow2,if=none,id=drive-ide0-0-0,cache=none \
+-device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 \
+-device virtio-gpu-pci,id=video0,max_outputs=1,blob=on,bus=pci.0,addr=0x2 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/video-virtio-blob-on.xml b/tests/qemuxml2argvdata/video-virtio-blob-on.xml
new file mode 100644
index 0000000000..187347fac0
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-virtio-blob-on.xml
@@ -0,0 +1,33 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <vcpu placement='static'>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'/>
+ <controller type='usb' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <video>
+ <model type='virtio' heads='1' blob="on"/>
+ </video>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/video-virtio-vga-blob-on.args b/tests/qemuxml2argvdata/video-virtio-vga-blob-on.args
new file mode 100644
index 0000000000..eeef2ee821
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-virtio-vga-blob-on.args
@@ -0,0 +1,34 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i386 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
+-machine pc,usb=off,dump-guest-core=off \
+-accel tcg \
+-m 1024 \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot strict=on \
+-usb \
+-drive file=/var/lib/libvirt/images/QEMUGuest1,format=qcow2,if=none,id=drive-ide0-0-0,cache=none \
+-device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 \
+-device virtio-vga,id=video0,max_outputs=1,blob=on,bus=pci.0,addr=0x2 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/video-virtio-vga-blob-on.xml b/tests/qemuxml2argvdata/video-virtio-vga-blob-on.xml
new file mode 100644
index 0000000000..00aed31d28
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-virtio-vga-blob-on.xml
@@ -0,0 +1,33 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <vcpu placement='static'>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'/>
+ <controller type='usb' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <video>
+ <model type='virtio' primary="yes" heads='1' blob="on"/>
+ </video>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 1d6e03490d..b2de8ef44f 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -2437,6 +2437,18 @@ mymain(void)
DO_TEST("video-virtio-vga",
QEMU_CAPS_DEVICE_VIRTIO_GPU,
QEMU_CAPS_DEVICE_VIRTIO_VGA);
+ DO_TEST("video-virtio-blob-on",
+ QEMU_CAPS_DEVICE_VIRTIO_GPU,
+ QEMU_CAPS_VIRTIO_GPU_BLOB);
+ DO_TEST("video-virtio-vga-blob-on",
+ QEMU_CAPS_DEVICE_VIRTIO_GPU,
+ QEMU_CAPS_DEVICE_VIRTIO_VGA,
+ QEMU_CAPS_VIRTIO_GPU_BLOB);
+ DO_TEST("video-virtio-blob-off",
+ QEMU_CAPS_DEVICE_VIRTIO_GPU,
+ QEMU_CAPS_VIRTIO_GPU_BLOB);
+ DO_TEST("video-virtio-blob-absent",
+ QEMU_CAPS_DEVICE_VIRTIO_GPU);
DO_TEST_CAPS_LATEST("video-virtio-vga-gpu-gl");
DO_TEST_CAPS_LATEST("video-bochs-display-device");
DO_TEST_CAPS_LATEST("video-ramfb-display-device");
diff --git a/tests/qemuxml2xmloutdata/video-virtio-blob-absent.xml b/tests/qemuxml2xmloutdata/video-virtio-blob-absent.xml
new file mode 100644
index 0000000000..827ed19153
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/video-virtio-blob-absent.xml
@@ -0,0 +1,41 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <vcpu placement='static'>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'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <audio id='1' type='none'/>
+ <video>
+ <model type='virtio' heads='1' primary='yes'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+ </video>
+ <memballoon model='virtio'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </memballoon>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/video-virtio-blob-off.xml b/tests/qemuxml2xmloutdata/video-virtio-blob-off.xml
new file mode 100644
index 0000000000..5742687d6a
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/video-virtio-blob-off.xml
@@ -0,0 +1,41 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <vcpu placement='static'>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'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <audio id='1' type='none'/>
+ <video>
+ <model type='virtio' heads='1' primary='yes' blob='off'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+ </video>
+ <memballoon model='virtio'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </memballoon>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/video-virtio-blob-on.xml b/tests/qemuxml2xmloutdata/video-virtio-blob-on.xml
new file mode 100644
index 0000000000..649c4e5e4c
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/video-virtio-blob-on.xml
@@ -0,0 +1,41 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <vcpu placement='static'>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'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <audio id='1' type='none'/>
+ <video>
+ <model type='virtio' heads='1' primary='yes' blob='on'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+ </video>
+ <memballoon model='virtio'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </memballoon>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/video-virtio-vga-blob-on.xml b/tests/qemuxml2xmloutdata/video-virtio-vga-blob-on.xml
new file mode 100644
index 0000000000..649c4e5e4c
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/video-virtio-vga-blob-on.xml
@@ -0,0 +1,41 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <vcpu placement='static'>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'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <audio id='1' type='none'/>
+ <video>
+ <model type='virtio' heads='1' primary='yes' blob='on'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+ </video>
+ <memballoon model='virtio'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </memballoon>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 518842112e..3d31a1480f 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -1278,6 +1278,18 @@ mymain(void)
QEMU_CAPS_DEVICE_VIRTIO_GPU_CCW);
DO_TEST("video-none-device", QEMU_CAPS_VNC);
DO_TEST_CAPS_LATEST("video-virtio-vga-gpu-gl");
+ DO_TEST("video-virtio-blob-on",
+ QEMU_CAPS_DEVICE_VIRTIO_GPU,
+ QEMU_CAPS_VIRTIO_GPU_BLOB);
+ DO_TEST("video-virtio-vga-blob-on",
+ QEMU_CAPS_DEVICE_VIRTIO_GPU,
+ QEMU_CAPS_DEVICE_VIRTIO_VGA,
+ QEMU_CAPS_VIRTIO_GPU_BLOB);
+ DO_TEST("video-virtio-blob-off",
+ QEMU_CAPS_DEVICE_VIRTIO_GPU,
+ QEMU_CAPS_VIRTIO_GPU_BLOB);
+ DO_TEST("video-virtio-blob-absent",
+ QEMU_CAPS_DEVICE_VIRTIO_GPU);
DO_TEST_CAPS_LATEST("intel-iommu");
DO_TEST_CAPS_LATEST("intel-iommu-caching-mode");
--
2.35.1
