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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
ef7f0d6a AR |
2 | #ifndef _ASM_X86_KASAN_H |
3 | #define _ASM_X86_KASAN_H | |
4 | ||
920e277e AR |
5 | #include <linux/const.h> |
6 | #define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL) | |
7 | ||
ef7f0d6a AR |
8 | /* |
9 | * Compiler uses shadow offset assuming that addresses start | |
10 | * from 0. Kernel addresses don't start from 0, so shadow | |
11 | * for kernel really starts from compiler's shadow offset + | |
12 | * 'kernel address space start' >> KASAN_SHADOW_SCALE_SHIFT | |
13 | */ | |
14 | #define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET + \ | |
4c7c4483 KS |
15 | ((-1UL << __VIRTUAL_MASK_SHIFT) >> 3)) |
16 | /* | |
17 | * 47 bits for kernel address -> (47 - 3) bits for shadow | |
18 | * 56 bits for kernel address -> (56 - 3) bits for shadow | |
19 | */ | |
20 | #define KASAN_SHADOW_END (KASAN_SHADOW_START + (1ULL << (__VIRTUAL_MASK_SHIFT - 3))) | |
ef7f0d6a AR |
21 | |
22 | #ifndef __ASSEMBLY__ | |
23 | ||
ef7f0d6a | 24 | #ifdef CONFIG_KASAN |
5d5aa3cf | 25 | void __init kasan_early_init(void); |
ef7f0d6a AR |
26 | void __init kasan_init(void); |
27 | #else | |
5d5aa3cf | 28 | static inline void kasan_early_init(void) { } |
ef7f0d6a AR |
29 | static inline void kasan_init(void) { } |
30 | #endif | |
31 | ||
32 | #endif | |
33 | ||
34 | #endif |