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Add new 'kvm' domain feature and ability to hide KVM signature

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QEMU 2.1 added support for the kvm=off option to the -cpu command,
allowing the KVM hypervisor signature to be hidden from the guest.
This enables disabling of some paravirualization features in the
guest as well as allowing certain drivers which test for the
hypervisor to load.  Domain XML syntax is as follows:

<domain type='kvm>
  ...
  <features>
    ...
    <kvm>
      <hidden state='on'/>
    </kvm>
  </features>
  ...

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Alex Williamson
2014-08-21 11:04:45 -06:00
committed by Ján Tomko
parent 4dfc34c301
commit d071164272
12 changed files with 240 additions and 2 deletions
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2
tests/qemuargv2xmltest.c
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@@ -284,6 +284,8 @@ mymain(void)
DO_TEST("hyperv");
DO_TEST("kvm-features");
DO_TEST("pseries-nvram");
DO_TEST("pseries-disk");

5
tests/qemuxml2argvdata/qemuxml2argv-kvm-features-off.args Normal file
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@@ -0,0 +1,5 @@
LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \
/usr/bin/qemu \
-S -M pc -cpu qemu32 -m 214 -smp 6 -nographic \
-monitor unix:/tmp/test-monitor,server,nowait \
-boot n -usb -net none -serial none -parallel none

27
tests/qemuxml2argvdata/qemuxml2argv-kvm-features-off.xml Normal file
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@@ -0,0 +1,27 @@
<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'>6</vcpu>
<os>
<type arch='i686' machine='pc'>hvm</type>
<boot dev='network'/>
</os>
<features>
<acpi/>
<kvm>
<hidden state='off'/>
</kvm>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu</emulator>
<controller type='usb' index='0'/>
<controller type='pci' index='0' model='pci-root'/>
<memballoon model='virtio'/>
</devices>
</domain>

5
tests/qemuxml2argvdata/qemuxml2argv-kvm-features.args Normal file
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@@ -0,0 +1,5 @@
LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \
/usr/bin/qemu -S -M pc \
-cpu qemu32,kvm=off -m 214 -smp 6 -nographic -monitor \
unix:/tmp/test-monitor,server,nowait -boot n -usb -net none -serial none \
-parallel none

27
tests/qemuxml2argvdata/qemuxml2argv-kvm-features.xml Normal file
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@@ -0,0 +1,27 @@
<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'>6</vcpu>
<os>
<type arch='i686' machine='pc'>hvm</type>
<boot dev='network'/>
</os>
<features>
<acpi/>
<kvm>
<hidden state='on'/>
</kvm>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu</emulator>
<controller type='usb' index='0'/>
<controller type='pci' index='0' model='pci-root'/>
<memballoon model='none'/>
</devices>
</domain>

3
tests/qemuxml2argvtest.c
View File

@@ -672,6 +672,9 @@ mymain(void)
DO_TEST("hyperv", NONE);
DO_TEST("hyperv-off", NONE);
DO_TEST("kvm-features", NONE);
DO_TEST("kvm-features-off", NONE);
DO_TEST("hugepages", QEMU_CAPS_MEM_PATH);
DO_TEST("hugepages-pages", QEMU_CAPS_MEM_PATH, QEMU_CAPS_OBJECT_MEMORY_RAM,
QEMU_CAPS_OBJECT_MEMORY_FILE);

3
tests/qemuxml2xmltest.c
View File

@@ -198,6 +198,9 @@ mymain(void)
DO_TEST("hyperv");
DO_TEST("hyperv-off");
DO_TEST("kvm-features");
DO_TEST("kvm-features-off");
DO_TEST("hugepages");
DO_TEST("hugepages-pages");
DO_TEST("hugepages-pages2");