A Windows Server 2019 guest got paused suddenly on RHEL8 KVM host with "KVM: entry failed, hardware error 0x80000021"

Solution Verified - Updated -

Issue

A Windows Server 2019 guest got paused suddenly on RHEL8. KVM host with following error messages in /var/log/libvirt/qemu/<logfile>:

      :
    KVM: entry failed, hardware error 0x80000021
      :
    EAX=0b06e7a0 EBX=00000001 ECX=00000000 EDX=00000040
    ESI=00000000 EDI=9cbd2180 EBP=8163ef50 ESP=8163eed0
    EIP=00008000 EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=1 HLT=0

Environment

  • Red Hat Enterprise Linux (RHEL) 8 and 9
  • KVM as hypervisor
  • Windows as guest operating system

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