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 */
34
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