qemu-6.2.0起虚机概率性出现虚机概率性上报Failed to retrieve host CPU features

**【qemu-6.2.0】：起虚机概率性出现虚机概率性上报Failed to retrieve host CPU features**

**一、缺陷信息**

**【缺陷所属的os版本】（如openEuler-22.03-LTS，参考命令"cat /etc/os-release"结果）**
![输入图片说明](https://foruda.gitee.com/images/1734572723191852649/b3cb3d18_9759994.png "屏幕截图")

**【内核版本】（如kernel-5.10.0-60.138.0.165，参考命令"uname -r"结果）**
![输入图片说明](https://foruda.gitee.com/images/1734572819457684579/170fe265_9759994.png "屏幕截图")
**【环境信息】**
kunpeng-920B
kunpeng-920B Pro

**【问题复现步骤】：请描述具体的操作步骤**
使用openeuler qemu-6.2.0分支构建qemu-system-aarch64
使用如下xml配置通过virsh反复启动销毁虚机

```
<domain type='kvm'>
	<name>vm1</name>
	<memory unit='GiB'>1</memory> #内存
	<vcpu>4</vcpu>
	<os>
		<type arch='aarch64' machine='virt'>hvm</type> 
		#具体支持版本需要手动查看,qemu-kvm -machine help
		<loader readonly='yes' type='pflash'>/usr/share/edk2/aarch64/QEMU_EFI-pflash.raw</loader> 
		#edk2的安装路径，有的是在/usr/share/edk2.git路径下面
		<nvram template='/usr/share/edk2/aarch64/vars-template-pflash.raw'>/var/lib/libvirt/qemu/nvram/openEulerVM.fd</nvram>
	</os>
	<features>
		<acpi/>
		<gic version='3'/>
	</features>
	<cpu mode='host-passthrough'>
		<topology sockets='2' cores='2' threads='1'/> 
		<numa>
                        <cell id='0' cpus='0-3' memory='1' unit='GiB'/>
                </numa>
	#vcpu规格配置
	</cpu>
	<cputune>
		<vcpupin vcpu='0' cpuset='1'/>
		<vcpupin vcpu='1' cpuset='2'/>
		<vcpupin vcpu='2' cpuset='3'/>
		<vcpupin vcpu='3' cpuset='4'/>
	</cputune>
	<numatune>
		<memnode cellid='0' mode='strict' nodeset='0'/>
	</numatune>
	<iothreads>1</iothreads>
	<clock offset='utc'/>
	<on_poweroff>destroy</on_poweroff>
	<on_reboot>restart</on_reboot>
	<on_crash>restart</on_crash>
	<devices>
		<emulator>/home/qemu-system-aarch64</emulator>
		<disk type='file' device='disk'>
			<driver name='qemu' type='qcow2' iothread="1"/>
			<source file='/home/yjq/B020/openEuler-22.03-LTS-SP3-aarch64.qcow2'/> #镜像。镜像格式为qcow2，可以在官网下载
			<target dev='vda' bus='virtio'/> 
		#硬盘设备名
			<boot order='1'/>
		</disk>

<console type='pty'/>
		<video>
			<model type='virtio'/>
		</video>
		<controller type='scsi' index='0' model='virtio-scsi'/>
	</devices>
	<seclabel type='dynamic' model='dac' relabel='yes'/>
</domain>
```

**【实际结果】**，
概率性出现Failed to retrieve host CPU features，虚机启动失败。概率为1%左右，影响批量起虚机的业务效果。
![输入图片说明](https://foruda.gitee.com/images/1734572934332345460/19312941_9759994.png "屏幕截图")
**【期望结果】**，
虚机正常启动
**【其他相关附件信息】**
无附件

**【缺陷详情及分析指导参考链接】**
目前问题已定位，qemu-6.2.0未合入主线相关patch
详见：
https://lore.kernel.org/qemu-devel/87fsi1v6o1.wl-maz@kernel.org/#r
https://patches.linaro.org/project/qemu-devel/patch/20220927164920.1502219-1-peter.maydell@linaro.org/
合入patch后再测试，无复现问题。

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