Module paging

Re-exports

• pub use pagetable::*;

Modules

• fault
• pagetable
  basic paging support. code derived from the x86_64 crate

Functions

• get_cr3
  for x86_64, return the CR3 register. this is the physical address of the page table root. TODO: use page root in task struct instead of raw cr3
• get_root
  returns the identically mapped (+ kernel offset) virtual address of the page table
• map_page
  walk the page table, create missing tables, return mapped physical frame
• map_range
• map_vma^⚠
  unsafe as it dereferences raw pointer pt_root. Must make sure it’s a valid, 4k aligned virtual address.