How to get linux kernel page size programmatically

Question

I am working on a Linux module for IA64. My current problem is that the driver uses the PAGE_SIZE and PAGE_SHIFT macros for dma page allocation. The problem I am having is tha

Answer 1

This is what I finally did:

• Re-work my current module to take a new module parameter called page_shift and used that to calculate the PAGE_SIZE (PAGE_SIZE = 1 << PAGE_SHIFT)
• Created a module loader wrapper which gets the current system PAGE_SHIFT using getconf API from libc. This wrapper gets the current system page shift and pass it as a module parameter.

Right now the module is being loaded on different architectures with different PAGE_SIZE without any problems.