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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/arch/arm64/include/asm/kasan.h
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@@ -6,23 +6,23 @@
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 #include <linux/linkage.h>
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 #include <asm/memory.h>
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+#include <asm/mte-kasan.h>
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 #include <asm/pgtable-types.h>
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 #define arch_kasan_set_tag(addr, tag)	__tag_set(addr, tag)
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 #define arch_kasan_reset_tag(addr)	__tag_reset(addr)
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 #define arch_kasan_get_tag(addr)	__tag_get(addr)
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-#ifdef CONFIG_KASAN
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+#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
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+
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+void kasan_init(void);
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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/N of kernel virtual addresses,
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  * where N = (1 << KASAN_SHADOW_SCALE_SHIFT).
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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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-/*
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+ *
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+ * KASAN_SHADOW_OFFSET:
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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 >> KASAN_SHADOW_SCALE_SHIFT) + KASAN_SHADOW_OFFSET
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@@ -33,10 +33,9 @@
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  *      KASAN_SHADOW_OFFSET = KASAN_SHADOW_END -
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  *				(1ULL << (64 - KASAN_SHADOW_SCALE_SHIFT))
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  */
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-#define KASAN_SHADOW_OFFSET     (KASAN_SHADOW_END - (1ULL << \
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-					(64 - KASAN_SHADOW_SCALE_SHIFT)))
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+#define _KASAN_SHADOW_START(va)	(KASAN_SHADOW_END - (1UL << ((va) - KASAN_SHADOW_SCALE_SHIFT)))
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+#define KASAN_SHADOW_START      _KASAN_SHADOW_START(vabits_actual)
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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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