libvirt/tests/qemuxml2argvdata/tpm-passthrough.x86_64-latest.args
Peter Krempa bd3d00babc qemu: Revert to using non-JSON commandline for -device
When -device is configured via JSON a bug [1] is triggered in qemu were
the DEVICE_DELETED event for the removal of the device frontend is no
longer delivered to libvirt. Without the DEVICE_DELETED event we don't
remove the corresponding entries in the VM XML.

Until qemu will be fixed we must stop using the JSON syntax for -device.

This patch removes the detection of the capability. The capability is
used only during startup of a fresh VM so we don't need to consider any
compaitibility steps for existing VMs.

For users who wish to use 'libvirt-7.9' and 'libvirt-7.10' with
'qemu-6.2' there are two possible workarounds:

 - filter out the 'device.json' qemu capability '/etc/libvirt/qemu.conf':

   capability_filters = [ "device.json" ]

 - filter out the 'device.json' qemu capability via qemu namespace XML:

   <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
     [...]
     <qemu:capabilities>
       <qemu:del capability='device.json'/>
     </qemu:capabilities>
   </domain>

We must never again use the same capability name as we are now
instructing users to filter it as a workaround so once qemu is fixed
we'll need to pick a new capability value for it.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=2036669

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2035237
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-01-10 09:35:00 +01:00

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LC_ALL=C \
PATH=/bin \
HOME=/tmp/lib/domain--1-TPM-VM \
USER=test \
LOGNAME=test \
XDG_DATA_HOME=/tmp/lib/domain--1-TPM-VM/.local/share \
XDG_CACHE_HOME=/tmp/lib/domain--1-TPM-VM/.cache \
XDG_CONFIG_HOME=/tmp/lib/domain--1-TPM-VM/.config \
/usr/bin/qemu-system-x86_64 \
-name guest=TPM-VM,debug-threads=on \
-S \
-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/tmp/lib/domain--1-TPM-VM/master-key.aes"}' \
-machine pc-i440fx-2.12,usb=off,dump-guest-core=off,memory-backend=pc.ram \
-accel tcg \
-cpu qemu64 \
-m 2048 \
-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":2147483648}' \
-overcommit mem-lock=off \
-smp 1,sockets=1,cores=1,threads=1 \
-uuid 11d7cd22-da89-3094-6212-079a48a309a1 \
-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 \
-boot menu=on,strict=on \
-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
-tpmdev passthrough,id=tpm-tpm0,path=/dev/fdset/0,cancel-path=/dev/fdset/1 \
-add-fd set=0,fd=1730 \
-add-fd set=1,fd=1731 \
-device tpm-tis,tpmdev=tpm-tpm0,id=tpm0 \
-audiodev '{"id":"audio1","driver":"none"}' \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x2 \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on