【qemu-system-aarch64】arm64版本的qemu使用floppy软盘的时候报错，是不是arm的qemu不支持软盘？

我有两个版本的环境，都是arm的，一个是4.1版本的官方的libvirt+qemu，一个是6.2版本欧拉的libvirt+qemu。在6.2版本上，使用这个2.xml:
```
<domain type="kvm" id="0">
  <name>66666123</name>
  <uuid>e9c377e5-f765-48de-b97d-cfe70e917900</uuid>
  <maxMemory unit="KiB" slots="64">536870912</maxMemory>
  <memory unit="KiB">2097152</memory>
  <currentMemory unit="MiB">2048</currentMemory>
  <vcpu current="2">2</vcpu>
  <os>
    <type arch="aarch64" machine="virt">hvm</type>
    <loader readonly="yes" secure="no" type="pflash">/usr/share/edk2/aarch64/QEMU_EFI-pflash.raw</loader>
  </os>
  <features>
    <pae></pae>
    <acpi></acpi>
  </features>
  <cpu mode="host-passthrough">
    <topology sockets="1" cores="2" threads="1"></topology>
    <numa>
      <cell id="0" cpus="0-1" memory="2048" unit="MiB"></cell>
    </numa>
  </cpu>
  <clock offset="utc"></clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <disk device="cdrom">
      <driver name="qemu" type="raw" io="threads" queues="0"></driver>
      <target dev="hdd" bus="scsi"></target>
      <readonly></readonly>
      <boot order="1"></boot>
      <address type="drive" controller="1" bus="0" target="0" unit="3"></address>
    </disk>
    <disk device="floppy">
      <driver name="qemu" type="raw" io="threads" queues="0"></driver>
      <target dev="fda" bus="fdc"></target>
      <readonly></readonly>
    </disk>
    <controller type="pci" index="0" model="pcie-root"></controller>
    <controller type="pci" index="1" model="dmi-to-pci-bridge">
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x0"></address>
    </controller>
    <controller type="pci" index="2" model="pci-bridge">
      <address type="pci" domain="0x0000" bus="0x01" slot="0x04" function="0x0"></address>
    </controller>
    <controller type="scsi" index="0" model="virtio-scsi"></controller>
    <controller type="scsi" index="1" model="virtio-scsi"></controller>
    <controller type="sata" index="0"></controller>
    <controller type="sata" index="1"></controller>
    <controller type="usb" index="0" model="piix3-uhci"></controller>
    <controller type="usb" index="1" model="nec-xhci"></controller>
    <serial type="pty">
      <target type="pci-serial" port="0"></target>
    </serial>
    <serial type="pty">
      <target type="pci-serial" port="1"></target>
    </serial>
    <console type="pty">
      <target type="serial" port="0"></target>
    </console>
    <console type="pty">
      <target type="virtio" port="0"></target>
      <alias name="console1"></alias>
    </console>
    <sound model="ich6">
      <codec type="duplex"></codec>
    </sound>
    <video>
      <model type="virtio" vram="49152"></model>
    </video>
    <memballoon model="virtio"></memballoon>
  </devices>
</domain>
```
在命令行执行 virsh create 2.xml
![就会发生这个报错](https://foruda.gitee.com/images/1700624057117064009/7a42d359_7476997.png "屏幕截图")
报错：qemu-system-aarch64: -device floppy,unit=0,id=fdc0-0-0: 'floppy' is not a valid device model name
同样的，在官方版本的qemu4.1的环境里面用相同的xml，相同的命令就能成功创建虚拟机。
但是在qemu日志里面也发现了警告
![输入图片说明](https://foruda.gitee.com/images/1700624543186526382/b8d3061d_7476997.png "屏幕截图")
我在amd64的机器上也是这样配的软驱

```
<disk device="floppy">
      <driver name="qemu" type="raw" io="threads" queues="0"></driver>
      <target dev="fda" bus="fdc"></target>
      <readonly></readonly>
    </disk>
```
它就能正常开机，正常使用软驱。所以arm的qemu的软驱是不是都不支持呢？

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