2:03 p.m.
qemu provides the bochs-display video device since 3.0. This patch adds
support for this device in libvirt. See Gerd's post for more details:
https://www.kraxel.org/blog/2018/10/qemu-vga-emulation-and-bochs-display/
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1643404
Signed-off-by: Jonathon Jongsma <jjongsma(a)redhat.com>
---
Note that the documentation may need to be changed depending on which version the patch
makes it
into. I suppose it'll miss 5.5.0 since we're in freeze right now.
Note: depending on which distribution you're using, you may need to copy the vgabios
into place in
order to test. For example:
$ sudo ln -s /path/to/qemu/pc-bios/vgabios-bochs-display.bin /usr/share/qemu/
docs/formatdomain.html.in | 5 +--
docs/schemas/domaincommon.rng | 1 +
src/conf/domain_conf.c | 2 ++
src/conf/domain_conf.h | 1 +
src/qemu/qemu_capabilities.c | 4 +++
src/qemu/qemu_capabilities.h | 3 ++
src/qemu/qemu_command.c | 18 +++++++----
src/qemu/qemu_domain.c | 1 +
src/qemu/qemu_domain_address.c | 1 +
.../qemucapabilitiesdata/caps_3.0.0.ppc64.xml | 1 +
.../caps_3.0.0.x86_64.xml | 1 +
.../qemucapabilitiesdata/caps_3.1.0.ppc64.xml | 1 +
.../caps_3.1.0.x86_64.xml | 1 +
.../caps_4.0.0.aarch64.xml | 1 +
.../qemucapabilitiesdata/caps_4.0.0.ppc64.xml | 1 +
.../caps_4.0.0.riscv32.xml | 1 +
.../caps_4.0.0.riscv64.xml | 1 +
.../caps_4.0.0.x86_64.xml | 1 +
.../caps_4.1.0.x86_64.xml | 1 +
.../video-bochs-display-device.args | 32 +++++++++++++++++++
.../video-bochs-display-device.xml | 29 +++++++++++++++++
tests/qemuxml2argvtest.c | 3 ++
22 files changed, 102 insertions(+), 8 deletions(-)
create mode 100644 tests/qemuxml2argvdata/video-bochs-display-device.args
create mode 100644 tests/qemuxml2argvdata/video-bochs-display-device.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index a7a6ec32a5..9298ee7b16 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -6990,8 +6990,9 @@ qemu-kvm -net nic,model=? /dev/null
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>),
- "gop" (<span class="since">since 3.2.0</span>),
or
- "none" (<span class="since">since
4.6.0</span>)
+ "gop" (<span class="since">since
3.2.0</span>),
+ "none" (<span class="since">since 4.6.0</span>,
or "bochs-display"
+ (<span class="since">since 5.5.0</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).
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 31db599ab9..2ccb393432 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -3584,6 +3584,7 @@
<value>virtio</value>
<value>gop</value>
<value>none</value>
+ <value>bochs-display</value>
</choice>
</attribute>
<group>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 3323c9a5b1..f6da230c18 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -738,6 +738,7 @@ VIR_ENUM_IMPL(virDomainVideo,
"virtio",
"gop",
"none",
+ "bochs-display",
);
VIR_ENUM_IMPL(virDomainVideoVGAConf,
@@ -15158,6 +15159,7 @@ virDomainVideoDefaultRAM(const virDomainDef *def,
case VIR_DOMAIN_VIDEO_TYPE_VGA:
case VIR_DOMAIN_VIDEO_TYPE_CIRRUS:
case VIR_DOMAIN_VIDEO_TYPE_VMVGA:
+ case VIR_DOMAIN_VIDEO_TYPE_BOCHS_DISPLAY:
if (def->virtType == VIR_DOMAIN_VIRT_VBOX)
return 8 * 1024;
else if (def->virtType == VIR_DOMAIN_VIRT_VMWARE)
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index c1b5fc1337..e8e468426b 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1385,6 +1385,7 @@ typedef enum {
VIR_DOMAIN_VIDEO_TYPE_VIRTIO,
VIR_DOMAIN_VIDEO_TYPE_GOP,
VIR_DOMAIN_VIDEO_TYPE_NONE,
+ VIR_DOMAIN_VIDEO_TYPE_BOCHS_DISPLAY,
VIR_DOMAIN_VIDEO_TYPE_LAST
} virDomainVideoType;
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 02e84edc15..ec68d05112 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -533,6 +533,9 @@ VIR_ENUM_IMPL(virQEMUCaps,
"x86-max-cpu",
"cpu-unavailable-features",
"canonical-cpu-features",
+
+ /* 330 */
+ "bochs-display",
);
@@ -1121,6 +1124,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
{ "virtio-serial-pci-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL },
{ "virtio-serial-pci-non-transitional", QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL
},
{ "max-x86_64-cpu", QEMU_CAPS_X86_MAX_CPU },
+ { "bochs-display", QEMU_CAPS_DEVICE_BOCHS_DISPLAY },
};
static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioBalloon[] = {
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 915ba6cb2e..3cb56e63f4 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -515,6 +515,9 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check
*/
QEMU_CAPS_CPU_UNAVAILABLE_FEATURES, /* "unavailable-features" CPU property
*/
QEMU_CAPS_CANONICAL_CPU_FEATURES, /* avoid CPU feature aliases */
+ /* 335 */
+ QEMU_CAPS_DEVICE_BOCHS_DISPLAY, /* -device bochs-display */
+
QEMU_CAPS_LAST /* this must always be the last item */
} virQEMUCapsFlags;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 688dc324c6..5455b42f4a 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -111,6 +111,7 @@ VIR_ENUM_IMPL(qemuVideo,
"", /* no need for virtio */
"" /* don't support gop */,
"" /* 'none' doesn't make sense here */,
+ "bochs-display",
);
VIR_ENUM_DECL(qemuDeviceVideo);
@@ -128,6 +129,7 @@ VIR_ENUM_IMPL(qemuDeviceVideo,
"virtio-vga",
"" /* don't support gop */,
"" /* 'none' doesn't make sense here */,
+ "bochs-display",
);
VIR_ENUM_DECL(qemuDeviceVideoSecondary);
@@ -145,6 +147,7 @@ VIR_ENUM_IMPL(qemuDeviceVideoSecondary,
"virtio-gpu",
"" /* don't support gop */,
"" /* 'none' doesn't make sense here */,
+ "bochs-display",
);
VIR_ENUM_DECL(qemuSoundCodec);
@@ -4748,13 +4751,16 @@ qemuBuildDeviceVideoStr(const virDomainDef *def,
if (video->heads)
virBufferAsprintf(&buf, ",max_outputs=%u",
video->heads);
}
- } else if (video->vram &&
- ((video->type == VIR_DOMAIN_VIDEO_TYPE_VGA &&
- virQEMUCapsGet(qemuCaps, QEMU_CAPS_VGA_VGAMEM)) ||
- (video->type == VIR_DOMAIN_VIDEO_TYPE_VMVGA &&
- virQEMUCapsGet(qemuCaps, QEMU_CAPS_VMWARE_SVGA_VGAMEM)))) {
+ } else if (video->vram) {
+ if ((video->type == VIR_DOMAIN_VIDEO_TYPE_VGA &&
+ virQEMUCapsGet(qemuCaps, QEMU_CAPS_VGA_VGAMEM)) ||
+ (video->type == VIR_DOMAIN_VIDEO_TYPE_VMVGA &&
+ virQEMUCapsGet(qemuCaps, QEMU_CAPS_VMWARE_SVGA_VGAMEM))) {
- virBufferAsprintf(&buf, ",vgamem_mb=%u", video->vram / 1024);
+ virBufferAsprintf(&buf, ",vgamem_mb=%u", video->vram /
1024);
+ } else if (video->type == VIR_DOMAIN_VIDEO_TYPE_BOCHS_DISPLAY) {
+ virBufferAsprintf(&buf, ",vgamem=%uk", video->vram);
+ }
}
if (qemuBuildDeviceAddressStr(&buf, def, &video->info, qemuCaps) < 0)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index d71d9b3273..4e7ed45ff9 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -4969,6 +4969,7 @@ qemuDomainDeviceDefValidateVideo(const virDomainVideoDef *video)
case VIR_DOMAIN_VIDEO_TYPE_VMVGA:
case VIR_DOMAIN_VIDEO_TYPE_QXL:
case VIR_DOMAIN_VIDEO_TYPE_VIRTIO:
+ case VIR_DOMAIN_VIDEO_TYPE_BOCHS_DISPLAY:
case VIR_DOMAIN_VIDEO_TYPE_LAST:
break;
}
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index 4b99e8ca93..677a3f0499 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -929,6 +929,7 @@ qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,
case VIR_DOMAIN_VIDEO_TYPE_VBOX:
case VIR_DOMAIN_VIDEO_TYPE_QXL:
case VIR_DOMAIN_VIDEO_TYPE_PARALLELS:
+ case VIR_DOMAIN_VIDEO_TYPE_BOCHS_DISPLAY:
return pciFlags;
case VIR_DOMAIN_VIDEO_TYPE_DEFAULT:
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
b/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
index 40718981a8..61be1df782 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
@@ -151,6 +151,7 @@
<flag name='memory-backend-memfd.hugetlb'/>
<flag name='iothread.poll-max-ns'/>
<flag name='memory-backend-file.align'/>
+ <flag name='bochs-display'/>
<version>2012050</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>42900757</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
b/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
index c6394db602..7a322030bd 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
@@ -198,6 +198,7 @@
<flag name='memory-backend-file.align'/>
<flag name='nvdimm.unarmed'/>
<flag name='x86-max-cpu'/>
+ <flag name='bochs-display'/>
<version>3000000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>43100757</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
b/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
index ee6921ff92..400dc45be4 100644
--- a/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
@@ -156,6 +156,7 @@
<flag name='memory-backend-file.align'/>
<flag name='memory-backend-file.pmem'/>
<flag name='overcommit'/>
+ <flag name='bochs-display'/>
<version>3000091</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>42900758</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
b/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
index a8cb061bf3..434c644ad4 100644
--- a/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
@@ -201,6 +201,7 @@
<flag name='nvdimm.unarmed'/>
<flag name='overcommit'/>
<flag name='x86-max-cpu'/>
+ <flag name='bochs-display'/>
<version>3000092</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>43100758</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
b/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
index 250b7edd52..8fe369f518 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
@@ -163,6 +163,7 @@
<flag name='machine.virt.iommu'/>
<flag name='bitmap-merge'/>
<flag name='nbd-bitmap'/>
+ <flag name='bochs-display'/>
<version>4000000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>61700758</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
index 24b55002a6..2df230c4f7 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
@@ -168,6 +168,7 @@
<flag name='query-current-machine'/>
<flag name='bitmap-merge'/>
<flag name='nbd-bitmap'/>
+ <flag name='bochs-display'/>
<version>4000000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>42900758</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
index 230e1e7c99..f4acda457a 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
@@ -166,6 +166,7 @@
<flag name='query-current-machine'/>
<flag name='bitmap-merge'/>
<flag name='nbd-bitmap'/>
+ <flag name='bochs-display'/>
<version>4000000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
index 4b2f4cf628..e71d83ee06 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
@@ -166,6 +166,7 @@
<flag name='query-current-machine'/>
<flag name='bitmap-merge'/>
<flag name='nbd-bitmap'/>
+ <flag name='bochs-display'/>
<version>4000000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
index 716b756979..1d44a5a1ba 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
@@ -205,6 +205,7 @@
<flag name='bitmap-merge'/>
<flag name='nbd-bitmap'/>
<flag name='x86-max-cpu'/>
+ <flag name='bochs-display'/>
<version>4000000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>43100758</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
index 9cbf65b405..f336aeb48c 100644
--- a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
@@ -207,6 +207,7 @@
<flag name='x86-max-cpu'/>
<flag name='cpu-unavailable-features'/>
<flag name='canonical-cpu-features'/>
+ <flag name='bochs-display'/>
<version>4000050</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>43100759</microcodeVersion>
diff --git a/tests/qemuxml2argvdata/video-bochs-display-device.args
b/tests/qemuxml2argvdata/video-bochs-display-device.args
new file mode 100644
index 0000000000..f88e9ccb04
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-bochs-display-device.args
@@ -0,0 +1,32 @@
+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-i686 \
+-name QEMUGuest1 \
+-S \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-m 1024 \
+-realtime mlock=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,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-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 bochs-display,id=video0,vgamem=16384k,bus=pci.0,addr=0x2 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvdata/video-bochs-display-device.xml
b/tests/qemuxml2argvdata/video-bochs-display-device.xml
new file mode 100644
index 0000000000..f64fed4c7e
--- /dev/null
+++ b/tests/qemuxml2argvdata/video-bochs-display-device.xml
@@ -0,0 +1,29 @@
+<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-i686</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='bochs-display' vram='16384' heads='1'/>
+ </video>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 91ca35d469..07b3689776 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -2006,6 +2006,9 @@ mymain(void)
QEMU_CAPS_DEVICE_VIRTIO_VGA,
QEMU_CAPS_DEVICE_VIDEO_PRIMARY,
QEMU_CAPS_VIRTIO_GPU_MAX_OUTPUTS);
+ DO_TEST("video-bochs-display-device",
+ QEMU_CAPS_DEVICE_BOCHS_DISPLAY,
+ QEMU_CAPS_DEVICE_VIDEO_PRIMARY);
DO_TEST("video-none-device",
QEMU_CAPS_VNC);
DO_TEST_PARSE_ERROR("video-invalid-multiple-devices", NONE);
--
2.20.1