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  1. RHEL
  2. RHEL-104216

Can not cross migrate guest with multiple cpu threads

Linking RHIVOS CVEs to...Migration: Automation ...Sync from "Extern...XMLWordPrintable

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      What were you trying to do that didn't work?

      Can not cross migrate guest with multiple cpu threads from RHEL9.7 to RHEL10.1. The source and target hosts are of the same cpu, e.g. 
        Model name:                Intel(R) Xeon(R) Silver 4214 CPU @ 2.20GHz

      Also can reproduce with cpu:
        Model name:             Intel(R) Xeon(R) Silver 4110 CPU @ 2.10GHz

      Please provide the package NVR for which the bug is seen:

      Source:
      libvirt-10.10.0-13.el9.x86_64
      qemu-kvm-9.1.0-25.el9.x86_64
      Target:
      libvirt-11.3.0-1.el10.x86_64
      qemu-kvm-10.0.0-7.el10.x86_64

      How reproducible is this bug?:

      100%

      Steps to reproduce

      1.  Prepare a guest with the following cpu setting
         # virsh dumpxml avocado-vt-vm1 --xpath //cpu
        <cpu mode="host-model" check="partial">
          <topology sockets="1" dies="1" clusters="1" cores="1" threads="2"/>
        </cpu>
        
      1. Start the guest and migrate the guest to target host
         # virsh migrate avocado-vt-vm1 qemu+ssh://hostname/system --verbose --live
        error: operation failed: guest CPU doesn't match specification: extra features: ht
        

      Expected results

      Guest can be migrated

        1. log_in_source_host.log
          8 kB
        2. log_in_target_host.log
          7 kB
        3. virtqemud-source.log
          38.02 MB
        4. virtqemud-target.log
          2.06 MB
        5. vm-after-start.xml
          14 kB
        6. vm-before-start.xml
          7 kB

              jdenemar@redhat.com Jiri Denemark
              rhn-support-lizhu Lili Zhu
              Jiri Denemark Jiri Denemark
              Luyao Huang Luyao Huang
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                Created:
                Updated: