include/linux/ptdump.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef _LINUX_PTDUMP_H
   4 #define _LINUX_PTDUMP_H
   5
   6 #include <linux/mm_types.h>
   7
   8 struct ptdump_range {
   9         unsigned long start;
  10         unsigned long end;
  11 };
  12
  13 struct ptdump_state {
  14         /* level is 0:PGD to 4:PTE, or -1 if unknown */
  15         void (*note_page)(struct ptdump_state *st, unsigned long addr,
  16                           int level, u64 val);
  17         void (*effective_prot)(struct ptdump_state *st, int level, u64 val);
  18         const struct ptdump_range *range;
  19 };
  20
  21 bool ptdump_walk_pgd_level_core(struct seq_file *m,
  22                                 struct mm_struct *mm, pgd_t *pgd,
  23                                 bool checkwx, bool dmesg);
  24 void ptdump_walk_pgd(struct ptdump_state *st, struct mm_struct *mm, pgd_t *pgd);
  25 bool ptdump_check_wx(void);
  26
  27 static inline void debug_checkwx(void)
  28 {
  29         if (IS_ENABLED(CONFIG_DEBUG_WX))
  30                 ptdump_check_wx();
  31 }
  32
  33 #endif /* _LINUX_PTDUMP_H */