Is it possible to run 64-bit guest OS (linux/BSD), using VirtualBox on 64-bit capable CPU, but when host OS is 32bit? (Host may be linux or windows.)
Will 64bit guest run at full speed or it will be slow (64-bit wide instructions emulated like in qemu)?
If 64bit guest will be full speed, is there some 64-bit microOS inside virtualbox? There should be 64-bit host OS to correctly switch between 32 and 64 bit code.
This question is raised because I want to run several virtualized 64-bit Oses and do a highload test between them.