Dear linux developers,

since my upgrade from linux 4.11 to linux 4.12 the "kvm_intel" module does not 
load correctly anymore. "Modprobing" the kernel module gives an Input/Output 
error. It seems to be related to the CPU architecture and (to my knowledge) 
affects Conroe CPUs. I did a bisect and found the following commit as the 
guilty one:

commit 2c82878b0cb38fd516fd612c67852a6bbf282003
Author: Paolo Bonzini <>
Date:   Mon Mar 27 14:37:28 2017 +0200

    KVM: VMX: require virtual NMI support
    Virtual NMIs are only missing in Prescott and Yonah chips.  Both are 
    for virtualization usage---Yonah is 32-bit only even---so drop vNMI 
    Signed-off-by: Paolo Bonzini <>

Since the commit message only mentions Prescott and Yonah chips, I wanted to 
ask whether this commit is also intended to affect Conroe CPUs (which are 
probably still a bit more widespread). Do you see a solution to bring back 
support for Conroe chips?

Thank you for your hard work on the kernel!

Best regards,
Sebastian Rachuj

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