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 (0xffff800000000000ULL >> 3)) 15 /* 47 bits for kernel address -> (47 - 3) bits for shadow */ 16 #define KASAN_SHADOW_END (KASAN_SHADOW_START + (1ULL << (47 - 3))) 17 18 #ifndef __ASSEMBLY__ 19 20 #ifdef CONFIG_KASAN 21 void __init kasan_early_init(void); 22 void __init kasan_init(void); 23 #else 24 static inline void kasan_early_init(void) { } 25 static inline void kasan_init(void) { } 26 #endif 27 28 #endif 29 30 #endif 31