| Summary: |
[RHEL8][CPU-hotplug][s390x] after hotplug CPU by qmp command /proc/cpuinfo still shows the wrong info |
| Product: |
Red Hat Enterprise Linux 8
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Reporter: |
bfu <bfu> |
| Component: |
systemd | Assignee: |
systemd-maint |
| Status: |
CLOSED
NOTABUG
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QA Contact: |
Frantisek Sumsal <fsumsal> |
| Severity: |
high
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Docs Contact: |
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| Priority: |
high
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| Version: |
8.9 | CC: |
clegoate, cohuck, coli, dgilbert, dhorak, hannsj_uhl, jinzhao, juzhang, knoel, lijin, pbonzini, ribarry, smitterl, stefanha, thuth, vgoyal, virt-maint, virt-qe-z, yiwei
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| Target Milestone: |
rc | Keywords: |
Regression |
| Target Release: |
--- | |
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| Hardware: |
s390x | |
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| OS: |
Linux | |
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| Whiteboard: |
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Fixed In Version:
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Doc Type:
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If docs needed, set a value
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Doc Text:
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Story Points:
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Clone Of:
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Environment:
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Last Closed:
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2023-06-13 08:39:40 UTC
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Type:
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---
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Regression:
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Mount Type:
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Documentation:
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CRM:
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Verified Versions:
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Category:
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---
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oVirt Team:
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---
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RHEL 7.3 requirements from Atomic Host:
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Cloudforms Team:
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---
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Target Upstream Version:
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Embargoed:
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Description of problem: /proc/cpuinfo cannot shows correct CPU number after hotplug vCPU by qmp command Version-Release number of selected component (if applicable): kernel: 4.18.0-496.el8.s390x qemu-kvm: qemu-kvm-6.2.0-35.module+el8.9.0+19024+8193e2ac.s390x How reproducible: 100% 1. boot up guest with "-smp 5,maxcpus=6,cores=3,threads=1,sockets=2 \" 2. hot-plug 1 vCPU by command in qmp: "{"execute": "device_add", "arguments": {"id": "vcpu1", "driver": "host-s390x-cpu", "core-id": 5}, "id": "F13T8uRq"}" 3. search the CPU info in /proc/cpuinfo "grep -c "^processor\b" /proc/cpuinfo" Actual results: [root@localhost ~]# grep -c "^processor\b" /proc/cpuinfo 5 Expected results: [root@localhost ~]# grep -c "^processor\b" /proc/cpuinfo 6 Additional info: Didn't hit this issue with: kernel version: 4.18.0-492.el8.s390x qemu version: qemu-kvm-6.2.0-34.module+el8.9.0+18868+5565e56d.s390x http://10.0.136.47/7944438/test-results/101-Host_RHEL.m8.u9.v0.product_rhel.nographic.qcow2.virtio_scsi.up.virtio_net.Guest.RHEL.9.3.0.s390x.io-github-autotest-qemu.cpu_device_hotpluggable.hotplug.single_vcpu.with_reboot.shell_reboot.s390-virtio/debug.log