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 24void __init kasan_early_init(void); 25void __init kasan_init(void); 26#else 27static inline void kasan_early_init(void) { } 28static inline void kasan_init(void) { } 29#endif 30 31#endif 32 33#endif 34