qemu-system-aarch64命令启动kvm虚机触发断言失败

## 环境信息
【OS版本】
openEuler25.09
【内核版本】
OLK6.6
## 缺陷信息

【问题复现步骤】
[root@localhost szytztest]# bash start.sh  
configure accelerator virt-6.2 start  
machine init start  
cpu pmu init start  
qemu-system-aarch64: .../target/arm/helper.c:1725: pmevcnt_rawwrite: Assertion 'counter &lt; pmu.num_counters(env)' failed.  
start.sh: line 3: 2618129 Aborted (core dumped) qemu-system-aarch64 -m 8192 -smp 1 -chardev socket,id=SOCKSYZ,server=on,host=localhost,port=22734 -mon chardev=SOCKSYZ,mode=control -display none -device virtio-gic-pci,mmio_base=0x80000000 -machine virt,accel=kvm,gic-version=3.1,mpcpus=4,sockets=2,cores=2,threads=2 -m 8G,slab_max=300 -object memory-backend-ram,size=4G,id=m0 -object memory-backend-ram,size=4G,id=m1,memdev=m0,memdev=m1 -numa node,nodeid=0,cpus=0 -numa node,nodeid=3,cpus=2-3 -cpu host -device virtio-scsi-pci-device scsi-hd,drive=disk3,id=disk31 -drive id=disk31,file=/home/ci/syztestert/disk/disk3.img,if=none,cachemode=none -device scsi-hd,drive=disk2,id=disk32-drive id=disk2,file=/home/ci/syztestert/disk/disk2.img,if=none,cachemode=none -device virtio-net-pci,netdev=net0 -netdev user,id=net0,restrict=on,hostfwd=tcp::127.0.0.1:36863-&gt;22 -hda /home/ci/syztestert/disk/rootfs.img -snapshot -hdb /home/ci/syztestert/disk/casetest1.img -kernel /home/ci/cylceter/opensource-kernel/arch/arm64/boot/image -append "root=/dev/vda console=ttyAMA0 root=/dev/vda rw console=ttyAMA0 console=ttyS0 debug loglevel=8 softlockup panic=1 nmi_watchdog=1 panic_on_warn=1 panic_on_oops=1 hang_halt panic=1 watchdog_thresh=50 rebtiedb=off enable ascend_share_pool mmpp=acpi kernelcores=reliable clear_freelist hugetlb_free_vmemmap=on hugevmmalloc=on panic_on_oom=0 psi_vi=1 enable_dmips measure secretmem=enble=1 selevel=0 dynamic affinity xc all xint"

【实际结果】请描述出问题的结果和影响
qemu-system-aarch64: ../target/arm/helper.c:1725: pmevcntr_rawwrite: Assertion `counter &lt; pmu_num_counters(env)' failed.
【期望结果】请描述出期望的结果和影响
虚拟机启动正常
【已分析信息】如已经做过分析和定位，请尽量附上详细的分析结果
PMU寄存器PMCR在KVM_ARM_VCPU_INIT初始化阶段缺少初始化pmcr_n值，上述断言处，pmu_num_counters(env)读取pmcr_n值并与预设值counter比较而触发断言。
**二、缺陷分析结构反馈**
影响性分析说明：

缺陷严重等级:(Critical/High/Moderate/Low)

缺陷根因说明:

受影响版本排查(受影响/不受影响):
openEuler-20.03-LTS-SP4
openEuler-22.03-LTS-SP3
openEuler-22.03-LTS-SP4
openEuler-24.03-LTS
openEuler-24.03-LTS-SP1
openEuler-24.03-LTS-SP2

修复是否涉及abi变化(是/否):
openEuler-20.03-LTS-SP4
openEuler-22.03-LTS-SP3
openEuler-22.03-LTS-SP4
openEuler-24.03-LTS
openEuler-24.03-LTS-SP1
openEuler-24.03-LTS-SP2

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