1 /* SPDX-License-Identifier: GPL-2.0 */
9 #include <linux/linkage.h>
10 #include <asm/memory.h>
11 #include <asm/pgtable-types.h>
14 * KASAN_SHADOW_START: beginning of the kernel virtual addresses.
15 * KASAN_SHADOW_END: KASAN_SHADOW_START + 1/8 of kernel virtual addresses.
17 #define KASAN_SHADOW_START (VA_START)
18 #define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE)
21 * This value is used to map an address to the corresponding shadow
22 * address by the following formula:
23 * shadow_addr = (address >> 3) + KASAN_SHADOW_OFFSET;
25 * (1 << 61) shadow addresses - [KASAN_SHADOW_OFFSET,KASAN_SHADOW_END]
26 * cover all 64-bits of virtual addresses. So KASAN_SHADOW_OFFSET
27 * should satisfy the following equation:
28 * KASAN_SHADOW_OFFSET = KASAN_SHADOW_END - (1ULL << 61)
30 #define KASAN_SHADOW_OFFSET (KASAN_SHADOW_END - (1ULL << (64 - 3)))
32 void kasan_init(void);
33 void kasan_copy_shadow(pgd_t *pgdir);
34 asmlinkage void kasan_early_init(void);
37 static inline void kasan_init(void) { }
38 static inline void kasan_copy_shadow(pgd_t *pgdir) { }