| .. | .. |
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| 6 | 6 | |
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| 7 | 7 | #include <linux/linkage.h> |
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| 8 | 8 | #include <asm/memory.h> |
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| 9 | +#include <asm/mte-kasan.h> |
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| 9 | 10 | #include <asm/pgtable-types.h> |
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| 10 | 11 | |
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| 11 | 12 | #define arch_kasan_set_tag(addr, tag) __tag_set(addr, tag) |
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| 12 | 13 | #define arch_kasan_reset_tag(addr) __tag_reset(addr) |
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| 13 | 14 | #define arch_kasan_get_tag(addr) __tag_get(addr) |
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| 14 | 15 | |
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| 15 | | -#ifdef CONFIG_KASAN |
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| 16 | +#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) |
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| 17 | + |
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| 18 | +void kasan_init(void); |
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| 16 | 19 | |
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| 17 | 20 | /* |
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| 18 | 21 | * KASAN_SHADOW_START: beginning of the kernel virtual addresses. |
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| 19 | 22 | * KASAN_SHADOW_END: KASAN_SHADOW_START + 1/N of kernel virtual addresses, |
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| 20 | 23 | * where N = (1 << KASAN_SHADOW_SCALE_SHIFT). |
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| 21 | | - */ |
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| 22 | | -#define KASAN_SHADOW_START (VA_START) |
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| 23 | | -#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE) |
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| 24 | | - |
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| 25 | | -/* |
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| 24 | + * |
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| 25 | + * KASAN_SHADOW_OFFSET: |
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| 26 | 26 | * This value is used to map an address to the corresponding shadow |
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| 27 | 27 | * address by the following formula: |
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| 28 | 28 | * shadow_addr = (address >> KASAN_SHADOW_SCALE_SHIFT) + KASAN_SHADOW_OFFSET |
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| .. | .. |
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| 33 | 33 | * KASAN_SHADOW_OFFSET = KASAN_SHADOW_END - |
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| 34 | 34 | * (1ULL << (64 - KASAN_SHADOW_SCALE_SHIFT)) |
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| 35 | 35 | */ |
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| 36 | | -#define KASAN_SHADOW_OFFSET (KASAN_SHADOW_END - (1ULL << \ |
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| 37 | | - (64 - KASAN_SHADOW_SCALE_SHIFT))) |
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| 36 | +#define _KASAN_SHADOW_START(va) (KASAN_SHADOW_END - (1UL << ((va) - KASAN_SHADOW_SCALE_SHIFT))) |
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| 37 | +#define KASAN_SHADOW_START _KASAN_SHADOW_START(vabits_actual) |
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| 38 | 38 | |
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| 39 | | -void kasan_init(void); |
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| 40 | 39 | void kasan_copy_shadow(pgd_t *pgdir); |
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| 41 | 40 | asmlinkage void kasan_early_init(void); |
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| 42 | 41 | |
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