[vbox-dev] VT-x not very stable?

[Huihong Luo]

Quite sometimes, especially for those large p2v VMs, I had to turn off VT-x in order to be able to launch the vm. It works well without VT-x, but terminated unexpectedly if VT-x is on. All other configs are same.
 
Does VT-x improve performance significantly? What do I lose when VT-x is off? (except those known features, such as multiple CPUs, 64-bit, etc)
 
Thanks,
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