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
 8struct ptdump_range {
 9	unsigned long start;
10	unsigned long end;
11};
12
13struct ptdump_state {
14	void (*note_page_pte)(struct ptdump_state *st, unsigned long addr, pte_t pte);
15	void (*note_page_pmd)(struct ptdump_state *st, unsigned long addr, pmd_t pmd);
16	void (*note_page_pud)(struct ptdump_state *st, unsigned long addr, pud_t pud);
17	void (*note_page_p4d)(struct ptdump_state *st, unsigned long addr, p4d_t p4d);
18	void (*note_page_pgd)(struct ptdump_state *st, unsigned long addr, pgd_t pgd);
19	void (*note_page_flush)(struct ptdump_state *st);
20	void (*effective_prot_pte)(struct ptdump_state *st, pte_t pte);
21	void (*effective_prot_pmd)(struct ptdump_state *st, pmd_t pmd);
22	void (*effective_prot_pud)(struct ptdump_state *st, pud_t pud);
23	void (*effective_prot_p4d)(struct ptdump_state *st, p4d_t p4d);
24	void (*effective_prot_pgd)(struct ptdump_state *st, pgd_t pgd);
25	const struct ptdump_range *range;
26};
27
28bool ptdump_walk_pgd_level_core(struct seq_file *m,
29				struct mm_struct *mm, pgd_t *pgd,
30				bool checkwx, bool dmesg);
31void ptdump_walk_pgd(struct ptdump_state *st, struct mm_struct *mm, pgd_t *pgd);
32bool ptdump_check_wx(void);
33
34static inline void debug_checkwx(void)
35{
36	if (IS_ENABLED(CONFIG_DEBUG_WX))
37		ptdump_check_wx();
38}
39
40#endif /* _LINUX_PTDUMP_H */