Linux use huge pages only

I have a x64 Linux system. The page size reported by getconf is 4 k:

$ getconf PAGESIZE
4096

I want the kernel to use only large pages (2 M or 4 M) for all memory allocations. I've calculated that I have enough RAM to handle the memory that will be wasted because of this. How do I configure the Linux kernel so that it uses large pages for all allocations?