release/src-rt-6.x.4708/linux/linux-2.6.36/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 }