do not check CS.limit in prefetch when in long64 mode
do not check CS.limit in prefetch when in long64 mode

dbrashear/bochs,dariaphoebe/bochs,dbrashear/bochs,dbrashear/bochs,dariaphoebe/bochs,dariaphoebe/bochs,dariaphoebe/bochs,dariaphoebe/bochs,dbrashear/bochs,dbrashear/bochs