MTRR problem

Hello
I am Korean reseacher and was deeply impressed by your project and
community.
I have been working some home server with linuxbios.
That is based on SIS645, SIS961 and Pentium 4.
My project was stopped by P4 MTRR fixing problem at last week.
I found cache on/off routine in mailing list and inserted that code.
The result was system stop on that routine.
How can I solve this problem?
Please let me know about this.

Best regards.