What is vmx-root mode and what is vmx non-root mode?
By vmx-root code execution in HyperDbg, we mean that the code is executed after a vm-exit and before VMRESUME instruction.
By vmx non-root, it means that the code will be executed in regular kernel-mode codes.
You should be cautious if you want to cause vm-exit in vmx non-root. For example, you should not execute CPUID in vmx-root as it makes your logging mechanism slower. In other words, there is no limitation, but you have to know what you want to do.