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#ifndef _ASM_X86_KASAN_H
#define _ASM_X86_KASAN_H
/*
* Compiler uses shadow offset assuming that addresses start
* from 0. Kernel addresses don't start from 0, so shadow
* for kernel really starts from compiler's shadow offset +
* 'kernel address space start' >> KASAN_SHADOW_SCALE_SHIFT
*/
#define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET + \
(0xffff800000000000ULL >> 3))
/* 47 bits for kernel address -> (47 - 3) bits for shadow */
#define KASAN_SHADOW_END (KASAN_SHADOW_START + (1ULL << (47 - 3)))
#ifndef __ASSEMBLY__
extern pte_t kasan_zero_pte[];
extern pte_t kasan_zero_pmd[];
extern pte_t kasan_zero_pud[];
#ifdef CONFIG_KASAN
void __init kasan_map_early_shadow(pgd_t *pgd);
void __init kasan_init(void);
#else
static inline void kasan_map_early_shadow(pgd_t *pgd) { }
static inline void kasan_init(void) { }
#endif
#endif
#endif
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