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Does it mean it's a performance gain or is it buggy?

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up vote 2 down vote accepted

Because theoretically it could be exploited by a virus to virtualize your entire OS and thus, be undetectable to your antivirus software. Hence, if you are not using it, it's a good idea to leave it disabled.

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Really? That seems doubtful. – Zac B May 9 '12 at 14:05
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Never mind. Apparently this is a thing. theta44.org/software/HVM_Rootkits_ddz_bh-usa-06.pdf – Zac B May 9 '12 at 14:08

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