[Qemu-devel] kvm nest vt-x

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Hello, I am here to have a few questions about nested virtualization need 
feedback. 
          Is my code is the need to start VT-X function, the code in the vmware 
virtualization platform windows XP,
          win7 X86, win7 X64 are running perfectly, support a variety of CPU 
models.
          But in qemu inside the problem, the problem is as follows:


1. Low version of the operating system, such as windows XP, will be blue 
screen, win7 X64 system will lead to the entire server crash. The only way to 
run the system is win7 X86, and stable operation.

2. Only in the V2 model of the CPU to run, and will be a problem 1, if replaced 
by V3 CPU, all versions of the operating system will be blue