42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
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#ifndef __ASM_KASAN_H
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#define __ASM_KASAN_H
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#ifndef __ASSEMBLY__
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#ifdef CONFIG_KASAN
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#include <linux/linkage.h>
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#include <asm/memory.h>
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#include <asm/pgtable-types.h>
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/*
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* KASAN_SHADOW_START: beginning of the kernel virtual addresses.
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* KASAN_SHADOW_END: KASAN_SHADOW_START + 1/8 of kernel virtual addresses.
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*/
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#define KASAN_SHADOW_START (VA_START)
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#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE)
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/*
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* This value is used to map an address to the corresponding shadow
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* address by the following formula:
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* shadow_addr = (address >> 3) + KASAN_SHADOW_OFFSET;
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*
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* (1 << 61) shadow addresses - [KASAN_SHADOW_OFFSET,KASAN_SHADOW_END]
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* cover all 64-bits of virtual addresses. So KASAN_SHADOW_OFFSET
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* should satisfy the following equation:
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* KASAN_SHADOW_OFFSET = KASAN_SHADOW_END - (1ULL << 61)
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*/
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#define KASAN_SHADOW_OFFSET (KASAN_SHADOW_END - (1ULL << (64 - 3)))
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void kasan_init(void);
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void kasan_copy_shadow(pgd_t *pgdir);
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asmlinkage void kasan_early_init(void);
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#else
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static inline void kasan_init(void) { }
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static inline void kasan_copy_shadow(pgd_t *pgdir) { }
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#endif
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#endif
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#endif
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