I'm a curious developer and VirtualBox user and I'd like to understand a
little more about running 64 bit guests on 32 bit OSes. I hope I'm asking in
the right place, if not, please advise me. I'd like to know:
1) I've read on many places that there is some overhead by doing this, but I
didn't find the causes of this overhead. Since it is done using VT-X, I
thought that no conversions and stuff like that would be needed. So, what
are the (technical) reasons?
2) How big (% or whatever) is this overhead?
3) Does this overhead also occur on Mac OS X Leopard, which is (correct me
if I'm wrong) alleged to run 64-bit processes?
4) If the answer to (2) is affirmative, do you think it the overhead will
also occur on Snow Leopard Mac OS X (which has full 64 bit libraries)?
Thanks in advance,
Roberto Cássio Silva do Nasc. Júnior
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