kmemcheck: add the kmemcheck core
[linux-2.6.git] / arch / x86 / mm / kmemcheck / pte.c
1 #include <linux/mm.h>
2
3 #include <asm/pgtable.h>
4
5 #include "pte.h"
6
7 pte_t *kmemcheck_pte_lookup(unsigned long address)
8 {
9         pte_t *pte;
10         unsigned int level;
11
12         pte = lookup_address(address, &level);
13         if (!pte)
14                 return NULL;
15         if (level != PG_LEVEL_4K)
16                 return NULL;
17         if (!pte_hidden(*pte))
18                 return NULL;
19
20         return pte;
21 }
22