This can be addressed in a number of ways.

1. Retard the timing when at high rpm & high boost by using a "boost retard" distributor
2. Increase the octane rating of the fuel
3. Lower the maximum boost pressure.
4. Reduce the maximum rpm level
5. Reduce the compression ratio
6. Use water-Alcohol injection when at high boost & high rpm
7. Richen up when at high boost.
8. A combination of two or more of the above.

I suggest the first one for best results.