哈哈哈！！！我终于解决这个问题啦！我在
http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.8_Technical_Notes/kvm.html这里面看到一段话：
During the boot process inside the qemu-kvm utility, the screen was resized to the height of 1. A mouse click at this point caused a division by zero (the SIGFPE signal was sent) when calculating the absolute position of the pointer from the pixel. As a consequence, qemu-kvm terminated with the "Floating point exception" error. With this update, mouse click coordinates are forced to return values from the middle of the screen, so that qemu-kvm no longer terminates in the described scenario.
它的意思是说，终端命令行的屏幕太小了，需要把它放大一些，才可以用，所以当我把终端放大到全屏的时候，这个问题瞬间就被解决了，大家可以好好的试一试，反正我这边利用这种方法，暂时是没有问题的！
