LWN: Comments on "Four-level page tables"

Four-level page tables

amit2030 — 2007-03-13T05:41:03+00:00

From the kernel code, the first line is actually two lines:

struct mm_struct *mm = current->mm;
pgd = pgd_offset(mm, address);

tjc — 2004-10-14T17:36:12+00:00

Great article! I always wondered how that worked, but I didn't have time to research it. Articles like this make the subscription cost seem trivial.

ajax — 2004-10-14T14:13:50+00:00

First line, below, needed for completeness.

  
pgd = pgd_offset(address);  
pmd = pmd_offset(pgd, address);  
pte = *pte_offset_map(pmd, address);  
page = pte_page(pte);