Thanks for your directions.
While I already compiled the kernel, output kernel and .ko files, while when I unpack the system.img of android-x86 kitkat images, and replaced the corresponding files,
then repack the system.img, system.sfs, reboot, shows unsecure file "/lib/modules/*/modules.alias"... and cannot boot...
The official android x86 image cannot boot, and loop as
"i2c_hid i2c-FTSC1000:00: failed to change power setting."