Sean Collins on 17 Dec 2009 18:42:40 -0800

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Re: [PLUG] VirtualBox questions

One of Virtualbox's strengths is that like VMWare, it will recompile &  
patch instructions that cannot be executed in the native environment.  
When VT/AMD-V is present on host hardware, it will utilize that as well.

Now, in the case of an 64-bit host running on 32-bit hardware,  
Virtualbox has to emulate quite a bit of instructions, that were added  
when the AMD64 arch was introduced. So, not only are you emulating 32- 
bit ring-0 instructions, you're emulating a whole AMD64 environment on  
top of that.

Thank You,
Sean Collins

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