KVM host prints "x86/split lock detection" messages when running Windows Guests

Solution Verified - Updated -

Issue

  • Host dmesg has messages such as
x86/split lock detection: #AC: CPU 0/KVM/125155 took a split_lock trap at address: 0xfffff8060ff212ac

Environment

  • Red Hat Enterprise Linux 9
    • kernel-5.14.0-70.26.1.el9_0.x86_64
    • qemu-kvm-6.2.0-11.el9_0.5.x86_64
    • Windows 2019 Guest

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