Commit 981c01d4 authored by Dmitry Andreev's avatar Dmitry Andreev Committed by John Ferlan
Browse files

qemu: add support of optional 'autodeflate' attribute

Autodeflate can be enabled/disabled for memballon device
of model 'virtio'.

xml:
<devices>
  <memballoon model='virtio' autodeflate='on'/>
</devices>

qemu:
qemu -device virtio-balloon-pci,...,deflate-on-oom=on

Autodeflate cannot be enabled/disabled for running domain.
parent 3522a311
......@@ -5758,6 +5758,17 @@ qemuBuildMemballoonDevStr(virDomainDefPtr def,
if (qemuBuildDeviceAddressStr(&buf, def, &dev->info, qemuCaps) < 0)
goto error;
if (dev->autodeflate != VIR_TRISTATE_SWITCH_ABSENT) {
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_BALLOON_AUTODEFLATE)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("deflate-on-oom is not supported by this QEMU binary"));
goto error;
}
virBufferAsprintf(&buf, ",deflate-on-oom=%s",
virTristateSwitchTypeToString(dev->autodeflate));
}
if (virBufferCheckError(&buf) < 0)
goto error;
......
LC_ALL=C \
PATH=/bin \
HOME=/home/test \
USER=test \
LOGNAME=test \
QEMU_AUDIO_DRV=none \
/usr/bin/qemu \
-name QEMUGuest1 \
-S \
-M s390-ccw \
-m 214 \
-smp 1 \
-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
-nographic \
-nodefconfig \
-nodefaults \
-monitor unix:/tmp/test-monitor,server,nowait \
-no-acpi \
-boot c \
-device virtio-balloon-ccw,id=balloon0,devno=fe.0.000a,deflate-on-oom=on
<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='s390x' machine='s390-ccw'>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</emulator>
<memballoon model='virtio' autodeflate='on'>
<address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0a'/>
</memballoon>
</devices>
</domain>
LC_ALL=C \
PATH=/bin \
HOME=/home/test \
USER=test \
LOGNAME=test \
QEMU_AUDIO_DRV=none \
/usr/bin/qemu \
-name QEMUGuest1 \
-S \
-M pc \
-m 214 \
-smp 1 \
-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
-nographic \
-nodefconfig \
-nodefaults \
-monitor unix:/tmp/test-monitor,server,nowait \
-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 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x12,deflate-on-oom=off
<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</emulator>
<disk type='block' device='disk'>
<source dev='/dev/HostVG/QEMUGuest1'/>
<target dev='hda' bus='ide'/>
</disk>
<memballoon model='virtio' autodeflate='off'>
<address type='pci' domain='0' bus='0' slot='18' function='0'/>
</memballoon>
</devices>
</domain>
LC_ALL=C \
PATH=/bin \
HOME=/home/test \
USER=test \
LOGNAME=test \
QEMU_AUDIO_DRV=none \
/usr/bin/qemu \
-name QEMUGuest1 \
-S \
-M pc \
-m 214 \
-smp 1 \
-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
-nographic \
-nodefconfig \
-nodefaults \
-monitor unix:/tmp/test-monitor,server,nowait \
-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 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x12,deflate-on-oom=on
<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</emulator>
<disk type='block' device='disk'>
<source dev='/dev/HostVG/QEMUGuest1'/>
<target dev='hda' bus='ide'/>
</disk>
<memballoon model='virtio' autodeflate='on'>
<address type='pci' domain='0' bus='0' slot='18' function='0'/>
</memballoon>
</devices>
</domain>
LC_ALL=C \
PATH=/bin \
HOME=/home/test \
USER=test \
LOGNAME=test \
QEMU_AUDIO_DRV=none \
/usr/bin/qemu-system-aarch64 \
-name aarch64test \
-S \
-M virt \
-cpu cortex-a53 \
-m 1024 \
-smp 1 \
-uuid 496d7ea8-9739-544b-4ebd-ef08be936e8b \
-nographic \
-nodefconfig \
-nodefaults \
-monitor unix:/tmp/test-monitor,server,nowait \
-boot c \
-kernel /aarch64.kernel \
-initrd /aarch64.initrd \
-append 'earlyprintk console=ttyAMA0,115200n8 rw root=/dev/vda rootwait' \
-dtb /aarch64.dtb \
-usb \
-device virtio-balloon-device,id=balloon0,deflate-on-oom=on
<domain type="qemu">
<name>aarch64test</name>
<uuid>496d7ea8-9739-544b-4ebd-ef08be936e8b</uuid>
<memory>1048576</memory>
<currentMemory>1048576</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch="aarch64" machine="virt">hvm</type>
<kernel>/aarch64.kernel</kernel>
<initrd>/aarch64.initrd</initrd>
<dtb>/aarch64.dtb</dtb>
<cmdline>earlyprintk console=ttyAMA0,115200n8 rw root=/dev/vda rootwait</cmdline>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<cpu match='exact'>
<model>cortex-a53</model>
</cpu>
<clock offset="utc"/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/bin/qemu-system-aarch64</emulator>
<memballoon model='virtio' autodeflate='on'/>
</devices>
</domain>
......@@ -1210,6 +1210,15 @@ mymain(void)
QEMU_CAPS_DEVICE, QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG,
QEMU_CAPS_BOOTINDEX, QEMU_CAPS_VIRTIO_S390);
DO_TEST("balloon-device", QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG);
DO_TEST("balloon-device-deflate", QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG,
QEMU_CAPS_VIRTIO_BALLOON_AUTODEFLATE);
DO_TEST("balloon-ccw-deflate", QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG,
QEMU_CAPS_VIRTIO_BALLOON_AUTODEFLATE);
DO_TEST("balloon-mmio-deflate", QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG,
QEMU_CAPS_DTB, QEMU_CAPS_DEVICE_VIRTIO_MMIO,
QEMU_CAPS_VIRTIO_BALLOON_AUTODEFLATE);
DO_TEST("balloon-device-deflate-off", QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG,
QEMU_CAPS_VIRTIO_BALLOON_AUTODEFLATE);
DO_TEST("balloon-device-auto",
QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG);
DO_TEST("balloon-device-period", QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG);
......
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