1 #ifndef _ASM_X86_KASAN_H 2 #define _ASM_X86_KASAN_H 3 4 /* 5 * Compiler uses shadow offset assuming that addresses start 6 * from 0. Kernel addresses don't start from 0, so shadow 7 * for kernel really starts from compiler's shadow offset + 8 * 'kernel address space start' >> KASAN_SHADOW_SCALE_SHIFT 9 */ 10 #define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET + \ 11 (0xffff800000000000ULL >> 3)) 12 /* 47 bits for kernel address -> (47 - 3) bits for shadow */ 13 #define KASAN_SHADOW_END (KASAN_SHADOW_START + (1ULL << (47 - 3))) 14 15 #ifndef __ASSEMBLY__ 16 17 extern pte_t kasan_zero_pte[]; 18 extern pte_t kasan_zero_pmd[]; 19 extern pte_t kasan_zero_pud[]; 20 21 #ifdef CONFIG_KASAN 22 void __init kasan_map_early_shadow(pgd_t *pgd); 23 void __init kasan_init(void); 24 #else 25 static inline void kasan_map_early_shadow(pgd_t *pgd) { } 26 static inline void kasan_init(void) { } 27 #endif 28 29 #endif 30 31 #endif 32