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From 2010df9c6a8a4ff984e3f1b697398da648342953 Mon Sep 17 00:00:00 2001
Message-Id: <2010df9c6a8a4ff984e3f1b697398da648342953@dist-git>
From: Erik Skultety <eskultet@redhat.com>
Date: Thu, 19 Jul 2018 15:04:05 +0200
Subject: [PATCH] conf: Introduce new video type 'none'
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Historically, we've always enabled an emulated video device every time we
see that graphics should be supported with a guest. With the appearance
of mediated devices which can support QEMU's vfio-display capability,
users might want to use such a device as the only video device.
Therefore introduce a new, effectively a 'disable', type for video
device.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Erik Skultety <eskultet@redhat.com>
(cherry picked from commit d48813e81af798e3027edcc2f41be2630111ba65)
https://bugzilla.redhat.com/show_bug.cgi?id=1475770
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
---
docs/formatdomain.html.in | 13 +++-
docs/schemas/domaincommon.rng | 1 +
src/conf/domain_conf.c | 61 +++++++++++++------
src/conf/domain_conf.h | 1 +
src/qemu/qemu_command.c | 12 +++-
src/qemu/qemu_domain.c | 2 +
src/qemu/qemu_domain_address.c | 7 ++-
tests/domaincapsschemadata/full.xml | 1 +
.../video-invalid-multiple-devices.xml | 33 ++++++++++
tests/qemuxml2argvdata/video-none-device.args | 27 ++++++++
tests/qemuxml2argvdata/video-none-device.xml | 39 ++++++++++++
tests/qemuxml2argvtest.c | 4 +-
.../qemuxml2xmloutdata/video-none-device.xml | 42 +++++++++++++
tests/qemuxml2xmltest.c | 1 +
14 files changed, 220 insertions(+), 24 deletions(-)
create mode 100644 tests/qemuxml2argvdata/video-invalid-multiple-devices.xml
create mode 100644 tests/qemuxml2argvdata/video-none-device.args
create mode 100644 tests/qemuxml2argvdata/video-none-device.xml
create mode 100644 tests/qemuxml2xmloutdata/video-none-device.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 0e8f0a125f..42acf7a828 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -6666,9 +6666,18 @@ qemu-kvm -net nic,model=? /dev/null
The <code>model</code> element has a mandatory <code>type</code>
attribute which takes the value "vga", "cirrus", "vmvga", "xen",
"vbox", "qxl" (<span class="since">since 0.8.6</span>),
- "virtio" (<span class="since">since 1.3.0</span>)
- or "gop" (<span class="since">since 3.2.0</span>)
+ "virtio" (<span class="since">since 1.3.0</span>),
+ "gop" (<span class="since">since 3.2.0</span>), or
+ "none" (<span class="since">since 4.6.0</span>)
depending on the hypervisor features available.
+ The purpose of the type <code>none</code> is to instruct libvirt not
+ to add a default video device in the guest (see the paragraph above).
+ This legacy behaviour can be inconvenient in cases where GPU mediated
+ devices are meant to be the only rendering device within a guest and
+ so specifying another <code>video</code> device along with type
+ <code>none</code>.
+ Refer to <a id="elementsHostDev">Host device assignment</a> to see
+ how to add a mediated device into a guest.
</p>
<p>
You can provide the amount of video memory in kibibytes (blocks of
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index be8430ab22..ac04af51a1 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -3454,6 +3454,7 @@
<value>vbox</value>
<value>virtio</value>
<value>gop</value>
+ <value>none</value>
</choice>
</attribute>
<group>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 830c298158..23288aa01b 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -590,7 +590,8 @@ VIR_ENUM_IMPL(virDomainVideo, VIR_DOMAIN_VIDEO_TYPE_LAST,
"qxl",
"parallels",
"virtio",
- "gop")
+ "gop",
+ "none")
VIR_ENUM_IMPL(virDomainVideoVGAConf, VIR_DOMAIN_VIDEO_VGACONF_LAST,
"io",
@@ -5106,22 +5107,30 @@ virDomainDefPostParseVideo(virDomainDefPtr def,
if (def->nvideos == 0)
return 0;
- virDomainDeviceDef device = {
- .type = VIR_DOMAIN_DEVICE_VIDEO,
- .data.video = def->videos[0],
- };
+ if (def->videos[0]->type == VIR_DOMAIN_VIDEO_TYPE_NONE) {
+ /* we don't want to format any values we automatically fill in for
+ * videos into the XML, so clear them
+ */
+ virDomainVideoDefClear(def->videos[0]);
+ def->videos[0]->type = VIR_DOMAIN_VIDEO_TYPE_NONE;
+ } else {
+ virDomainDeviceDef device = {
+ .type = VIR_DOMAIN_DEVICE_VIDEO,
+ .data.video = def->videos[0],
+ };
- /* Mark the first video as primary. If the user specified
- * primary="yes", the parser already inserted the device at
- * def->videos[0]
- */
- def->videos[0]->primary = true;
+ /* Mark the first video as primary. If the user specified
+ * primary="yes", the parser already inserted the device at
+ * def->videos[0]
+ */
+ def->videos[0]->primary = true;
- /* videos[0] might have been added in AddImplicitDevices, after we've
- * done the per-device post-parse */
- if (virDomainDefPostParseDeviceIterator(def, &device,
- NULL, opaque) < 0)
- return -1;
+ /* videos[0] might have been added in AddImplicitDevices, after we've
+ * done the per-device post-parse */
+ if (virDomainDefPostParseDeviceIterator(def, &device,
+ NULL, opaque) < 0)
+ return -1;
+ }
return 0;
}
@@ -5670,13 +5679,30 @@ virDomainHostdevDefValidate(const virDomainHostdevDef *hostdev)
static int
-virDomainVideoDefValidate(const virDomainVideoDef *video)
+virDomainVideoDefValidate(const virDomainVideoDef *video,
+ const virDomainDef *def)
{
+ size_t i;
+
if (video->type == VIR_DOMAIN_VIDEO_TYPE_DEFAULT) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing video model and cannot determine default"));
return -1;
}
+
+ /* it doesn't make sense to pair video device type 'none' with any other
+ * types, there can be only a single video device in such case
+ */
+ for (i = 0; i < def->nvideos; i++) {
+ if (def->videos[i]->type == VIR_DOMAIN_VIDEO_TYPE_NONE &&
+ def->nvideos > 1) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("a '%s' video type must be the only video device "
+ "defined for the domain"));
+ return -1;
+ }
+ }
+
return 0;
}
@@ -5738,7 +5764,7 @@ virDomainDeviceDefValidateInternal(const virDomainDeviceDef *dev,
return virDomainHostdevDefValidate(dev->data.hostdev);
case VIR_DOMAIN_DEVICE_VIDEO:
- return virDomainVideoDefValidate(dev->data.video);
+ return virDomainVideoDefValidate(dev->data.video, def);
case VIR_DOMAIN_DEVICE_MEMORY:
return virDomainMemoryDefValidate(dev->data.memory);
@@ -15048,6 +15074,7 @@ virDomainVideoDefaultRAM(const virDomainDef *def,
case VIR_DOMAIN_VIDEO_TYPE_PARALLELS:
case VIR_DOMAIN_VIDEO_TYPE_VIRTIO:
case VIR_DOMAIN_VIDEO_TYPE_GOP:
+ case VIR_DOMAIN_VIDEO_TYPE_NONE:
case VIR_DOMAIN_VIDEO_TYPE_LAST:
default:
return 0;
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 8ca9558ceb..5e2f21dea3 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1424,6 +1424,7 @@ typedef enum {
VIR_DOMAIN_VIDEO_TYPE_PARALLELS, /* pseudo device for VNC in containers */
VIR_DOMAIN_VIDEO_TYPE_VIRTIO,
VIR_DOMAIN_VIDEO_TYPE_GOP,
+ VIR_DOMAIN_VIDEO_TYPE_NONE,
VIR_DOMAIN_VIDEO_TYPE_LAST
} virDomainVideoType;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 1fce45134f..954265feb0 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -105,7 +105,8 @@ VIR_ENUM_IMPL(qemuVideo, VIR_DOMAIN_VIDEO_TYPE_LAST,
"qxl",
"", /* don't support parallels */
"", /* no need for virtio */
- "" /* don't support gop */);
+ "" /* don't support gop */,
+ "" /* 'none' doesn't make sense here */);
VIR_ENUM_DECL(qemuDeviceVideo)
@@ -119,7 +120,8 @@ VIR_ENUM_IMPL(qemuDeviceVideo, VIR_DOMAIN_VIDEO_TYPE_LAST,
"qxl-vga",
"", /* don't support parallels */
"virtio-vga",
- "" /* don't support gop */);
+ "" /* don't support gop */,
+ "" /* 'none' doesn't make sense here */);
VIR_ENUM_DECL(qemuDeviceVideoSecondary)
@@ -133,7 +135,8 @@ VIR_ENUM_IMPL(qemuDeviceVideoSecondary, VIR_DOMAIN_VIDEO_TYPE_LAST,
"qxl",
"", /* don't support parallels */
"virtio-gpu",
- "" /* don't support gop */);
+ "" /* don't support gop */,
+ "" /* 'none' doesn't make sense here */);
VIR_ENUM_DECL(qemuSoundCodec)
@@ -4421,6 +4424,9 @@ qemuBuildVideoCommandLine(virCommandPtr cmd,
char *str = NULL;
virDomainVideoDefPtr video = def->videos[i];
+ if (video->type == VIR_DOMAIN_VIDEO_TYPE_NONE)
+ continue;
+
if (video->primary) {
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VIDEO_PRIMARY)) {
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 5337f1ce55..508846116b 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -4528,6 +4528,8 @@ static int
qemuDomainDeviceDefValidateVideo(const virDomainVideoDef *video)
{
switch ((virDomainVideoType) video->type) {
+ case VIR_DOMAIN_VIDEO_TYPE_NONE:
+ return 0;
case VIR_DOMAIN_VIDEO_TYPE_XEN:
case VIR_DOMAIN_VIDEO_TYPE_VBOX:
case VIR_DOMAIN_VIDEO_TYPE_PARALLELS:
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index ab2ac022f1..e6996934b8 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -821,6 +821,7 @@ qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,
case VIR_DOMAIN_VIDEO_TYPE_DEFAULT:
case VIR_DOMAIN_VIDEO_TYPE_GOP:
+ case VIR_DOMAIN_VIDEO_TYPE_NONE:
case VIR_DOMAIN_VIDEO_TYPE_LAST:
return 0;
}
@@ -1532,7 +1533,8 @@ qemuDomainValidateDevicePCISlotsPIIX3(virDomainDefPtr def,
goto cleanup;
}
- if (def->nvideos > 0) {
+ if (def->nvideos > 0 &&
+ def->videos[0]->type != VIR_DOMAIN_VIDEO_TYPE_NONE) {
/* Because the PIIX3 integrated IDE/USB controllers are
* already at slot 1, when qemu looks for the first free slot
* to place the VGA controller (which is always the first
@@ -1540,6 +1542,7 @@ qemuDomainValidateDevicePCISlotsPIIX3(virDomainDefPtr def,
* at slot 2.
*/
virDomainVideoDefPtr primaryVideo = def->videos[0];
+
if (virDeviceInfoPCIAddressWanted(&primaryVideo->info)) {
memset(&tmp_addr, 0, sizeof(tmp_addr));
tmp_addr.slot = 2;
@@ -2105,6 +2108,8 @@ qemuDomainAssignDevicePCISlots(virDomainDefPtr def,
/* Video devices */
for (i = 0; i < def->nvideos; i++) {
+ if (def->videos[i]->type == VIR_DOMAIN_VIDEO_TYPE_NONE)
+ continue;
if (!virDeviceInfoPCIAddressWanted(&def->videos[i]->info))
continue;
diff --git a/tests/domaincapsschemadata/full.xml b/tests/domaincapsschemadata/full.xml
index 154c4a6fe9..eafba1ae5b 100644
--- a/tests/domaincapsschemadata/full.xml
+++ b/tests/domaincapsschemadata/full.xml
@@ -74,6 +74,7 @@
<value>parallels</value>
<value>virtio</value>
<value>gop</value>
+ <value>none</value>
</enum>
</video>
<hostdev supported='yes'>
diff --git a/tests/qemuxml2argvdata/video-invalid-multiple-devices.xml b/tests/qemuxml2argvdata/video-invalid-multiple-devices.xml
new file mode 100644
index 0000000000..3f105efaae
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-invalid-multiple-devices.xml
@@ -0,0 +1,33 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219100</memory>
+ <currentMemory unit='KiB'>219100</currentMemory>
+ <vcpu placement='static' cpuset='1-4,8-20,525'>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-i686</emulator>
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'/>
+ <controller type='ide' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <video>
+ <model type='qxl'/>
+ </video>
+ <video>
+ <model type='none'/>
+ </video>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/video-none-device.args b/tests/qemuxml2argvdata/video-none-device.args
new file mode 100644
index 0000000000..1b03c0cb97
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-none-device.args
@@ -0,0 +1,27 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i686 \
+-name QEMUGuest1 \
+-S \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot c \
+-usb \
+-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \
+-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
+-vnc 127.0.0.1:0 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvdata/video-none-device.xml b/tests/qemuxml2argvdata/video-none-device.xml
new file mode 100644
index 0000000000..4b591562b7
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-none-device.xml
@@ -0,0 +1,39 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</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>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-i686</emulator>
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='ide' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <graphics type='vnc'/>
+ <video>
+ <model type='none'/>
+ </video>
+ <memballoon model='virtio'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </memballoon>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 9237a4fb89..3cff4ffb5e 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1998,7 +1998,9 @@ mymain(void)
QEMU_CAPS_DEVICE_VIRTIO_VGA,
QEMU_CAPS_DEVICE_VIDEO_PRIMARY,
QEMU_CAPS_VIRTIO_GPU_MAX_OUTPUTS);
- DO_TEST_PARSE_ERROR("video-invalid", NONE);
+ DO_TEST("video-none-device",
+ QEMU_CAPS_VNC);
+ DO_TEST_PARSE_ERROR("video-invalid-multiple-devices", NONE);
DO_TEST("virtio-rng-default",
QEMU_CAPS_DEVICE_VIRTIO_RNG,
diff --git a/tests/qemuxml2xmloutdata/video-none-device.xml b/tests/qemuxml2xmloutdata/video-none-device.xml
new file mode 100644
index 0000000000..6e76b394fe
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/video-none-device.xml
@@ -0,0 +1,42 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</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>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-i686</emulator>
+ <disk type='block' device='disk'>
+ <driver name='qemu' type='raw'/>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='ide' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <graphics type='vnc' port='-1' autoport='yes'>
+ <listen type='address'/>
+ </graphics>
+ <video>
+ <model type='none'/>
+ </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 e418e67f6c..e35644d479 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -1145,6 +1145,7 @@ mymain(void)
QEMU_CAPS_VIRTIO_GPU_MAX_OUTPUTS,
QEMU_CAPS_VNC,
QEMU_CAPS_DEVICE_VIRTIO_GPU_CCW);
+ DO_TEST("video-none-device", NONE);
DO_TEST("intel-iommu",
QEMU_CAPS_DEVICE_INTEL_IOMMU);
--
2.18.0
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