1 #ifndef _ASM_X86_KASAN_H 2 #define _ASM_X86_KASAN_H 3 4 #include <linux/const.h> 5 #define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL) 6 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 + \ 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))) 20 21 #ifndef __ASSEMBLY__ 22 23 #ifdef CONFIG_KASAN 24 void __init kasan_early_init(void); 25 void __init kasan_init(void); 26 #else 27 static inline void kasan_early_init(void) { } 28 static inline void kasan_init(void) { } 29 #endif 30 31 #endif 32 33 #endif 34