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ef7f0d6a AR |
1 | #ifndef _ASM_X86_KASAN_H |
2 | #define _ASM_X86_KASAN_H | |
3 | ||
920e277e AR |
4 | #include <linux/const.h> |
5 | #define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL) | |
6 | ||
ef7f0d6a AR |
7 | /* |
8 | * Compiler uses shadow offset assuming that addresses start | |
9 | * from 0. Kernel addresses don't start from 0, so shadow | |
10 | * for kernel really starts from compiler's shadow offset + | |
11 | * 'kernel address space start' >> KASAN_SHADOW_SCALE_SHIFT | |
12 | */ | |
13 | #define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET + \ | |
4c7c4483 KS |
14 | ((-1UL << __VIRTUAL_MASK_SHIFT) >> 3)) |
15 | /* | |
16 | * 47 bits for kernel address -> (47 - 3) bits for shadow | |
17 | * 56 bits for kernel address -> (56 - 3) bits for shadow | |
18 | */ | |
19 | #define KASAN_SHADOW_END (KASAN_SHADOW_START + (1ULL << (__VIRTUAL_MASK_SHIFT - 3))) | |
ef7f0d6a AR |
20 | |
21 | #ifndef __ASSEMBLY__ | |
22 | ||
ef7f0d6a | 23 | #ifdef CONFIG_KASAN |
5d5aa3cf | 24 | void __init kasan_early_init(void); |
ef7f0d6a AR |
25 | void __init kasan_init(void); |
26 | #else | |
5d5aa3cf | 27 | static inline void kasan_early_init(void) { } |
ef7f0d6a AR |
28 | static inline void kasan_init(void) { } |
29 | #endif | |
30 | ||
31 | #endif | |
32 | ||
33 | #endif |