kasan.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_UM_KASAN_H
 3#define __ASM_UM_KASAN_H
 4
 5#include <linux/init.h>
 6#include <linux/const.h>
 7
 8#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
 9
10/* used in kasan_mem_to_shadow to divide by 8 */
11#define KASAN_SHADOW_SCALE_SHIFT 3
12
13#ifdef CONFIG_X86_64
14#define KASAN_HOST_USER_SPACE_END_ADDR 0x00007fffffffffffUL
15/* KASAN_SHADOW_SIZE is the size of total address space divided by 8 */
16#define KASAN_SHADOW_SIZE ((KASAN_HOST_USER_SPACE_END_ADDR + 1) >> \
17			KASAN_SHADOW_SCALE_SHIFT)
18#else
19#error "KASAN_SHADOW_SIZE is not defined for this sub-architecture"
20#endif /* CONFIG_X86_64 */
21
22#define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET)
23#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE)
24
25#ifdef CONFIG_KASAN
26void kasan_init(void);
27#else
28static inline void kasan_init(void) { }
29#endif /* CONFIG_KASAN */
30
31#endif /* __ASM_UM_KASAN_H */