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 void ptdump_walk_pgd(struct ptdump_state *st, struct mm_struct *mm, pgd_t *pgd);
22 
23 #endif /* _LINUX_PTDUMP_H */
24