1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 #ifndef __ASM_KASAN_H
3 #define __ASM_KASAN_H
4
5 #if defined(CONFIG_KASAN) && !defined(CONFIG_C
6 #define _GLOBAL_KASAN(fn) _GLOBAL(__##fn
7 #define _GLOBAL_TOC_KASAN(fn) _GLOBAL_TOC(__
8 #define EXPORT_SYMBOL_KASAN(fn) EXPORT_SYMBOL(
9 #else
10 #define _GLOBAL_KASAN(fn) _GLOBAL(fn)
11 #define _GLOBAL_TOC_KASAN(fn) _GLOBAL_TOC(fn
12 #define EXPORT_SYMBOL_KASAN(fn)
13 #endif
14
15 #ifndef __ASSEMBLY__
16
17 #include <asm/page.h>
18 #include <linux/sizes.h>
19
20 #define KASAN_SHADOW_SCALE_SHIFT 3
21
22 #if defined(CONFIG_EXECMEM) && defined(CONFIG_
23 #define KASAN_KERN_START ALIGN_DOWN(PAG
24 #else
25 #define KASAN_KERN_START PAGE_OFFSET
26 #endif
27
28 #define KASAN_SHADOW_START (KASAN_SHADOW_
29 (KASAN_KERN_S
30
31 #define KASAN_SHADOW_OFFSET ASM_CONST(CONF
32
33 #ifdef CONFIG_PPC32
34 #define KASAN_SHADOW_END (-(-KASAN_SHAD
35 #elif defined(CONFIG_PPC_BOOK3S_64)
36 /*
37 * The shadow ends before the highest accessib
38 * because we don't need a shadow for the shad
39 * c00e000000000000 << 3 + a80e000000000000 =
40 */
41 #define KASAN_SHADOW_END 0xc00fc00000000000UL
42
43 #else
44
45 /*
46 * The shadow ends before the highest accessib
47 * because we don't need a shadow for the shad
48 * But it doesn't hurt to have a shadow for th
49 * keep shadow end aligned eases things.
50 */
51 #define KASAN_SHADOW_END 0xc000200000000000UL
52
53 #endif
54
55 #ifdef CONFIG_KASAN
56 #ifdef CONFIG_PPC_BOOK3S_64
57 DECLARE_STATIC_KEY_FALSE(powerpc_kasan_enabled
58
59 static __always_inline bool kasan_arch_is_read
60 {
61 if (static_branch_likely(&powerpc_kasa
62 return true;
63 return false;
64 }
65
66 #define kasan_arch_is_ready kasan_arch_is_read
67 #endif
68
69 void kasan_early_init(void);
70 void kasan_mmu_init(void);
71 void kasan_init(void);
72 void kasan_late_init(void);
73 #else
74 static inline void kasan_init(void) { }
75 static inline void kasan_mmu_init(void) { }
76 static inline void kasan_late_init(void) { }
77 #endif
78
79 void kasan_update_early_region(unsigned long k
80 int kasan_init_shadow_page_tables(unsigned lon
81 int kasan_init_region(void *start, size_t size
82
83 #endif /* __ASSEMBLY */
84 #endif
85
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.