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