On 05/11/2015 17:15, Paolo Bonzini wrote:
> On 05/11/2015 17:07, Gerhard Wiesinger wrote:
>> ./trace-cmd record -b 20000 -e kvm
>> ./trace-cmd report | grep -i task_switch
>>  qemu-system-x86-6024  [001] 792774.719297: kvm_exit: reason task_switch
>> rip 0x4883 info 158 4000000000
> 0x158 is the segment selector of the incoming TSS, and the task switch
> was caused by a far jump.
>> But I can't interpret it.
> Neither can I; you have to send the whole trace.
>> But I know my patch works well. Since it is
>> just a module parameter it is fully backward compatible by default and
>> because of the one liner no side effects are possible. So a intergration
>> would be good.
> It's also papering over a bug, and likely the bug still triggers on
> Intel systems.  So it's not acceptable.
> Can you provide reproduction instructions please?

At the very least, does it reproduce without KVM?

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