Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / arch / loongarch / include / asm / kasan.h
blob7f52bd31b9d4f5f6e0b938e3ec439a3c77229a7c
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_KASAN_H
3 #define __ASM_KASAN_H
5 #ifndef __ASSEMBLY__
7 #include <linux/linkage.h>
8 #include <linux/mmzone.h>
9 #include <asm/addrspace.h>
10 #include <asm/io.h>
11 #include <asm/pgtable.h>
13 #define KASAN_SHADOW_SCALE_SHIFT 3
14 #define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
16 #define XRANGE_SHIFT (48)
18 /* Valid address length */
19 #define XRANGE_SHADOW_SHIFT min(cpu_vabits, VA_BITS)
20 /* Used for taking out the valid address */
21 #define XRANGE_SHADOW_MASK GENMASK_ULL(XRANGE_SHADOW_SHIFT - 1, 0)
22 /* One segment whole address space size */
23 #define XRANGE_SIZE (XRANGE_SHADOW_MASK + 1)
25 /* 64-bit segment value. */
26 #define XKPRANGE_UC_SEG (0x8000)
27 #define XKPRANGE_CC_SEG (0x9000)
28 #define XKPRANGE_WC_SEG (0xa000)
29 #define XKVRANGE_VC_SEG (0xffff)
31 /* Cached */
32 #define XKPRANGE_CC_START CACHE_BASE
33 #define XKPRANGE_CC_SIZE XRANGE_SIZE
34 #define XKPRANGE_CC_KASAN_OFFSET (0)
35 #define XKPRANGE_CC_SHADOW_SIZE (XKPRANGE_CC_SIZE >> KASAN_SHADOW_SCALE_SHIFT)
36 #define XKPRANGE_CC_SHADOW_END (XKPRANGE_CC_KASAN_OFFSET + XKPRANGE_CC_SHADOW_SIZE)
38 /* UnCached */
39 #define XKPRANGE_UC_START UNCACHE_BASE
40 #define XKPRANGE_UC_SIZE XRANGE_SIZE
41 #define XKPRANGE_UC_KASAN_OFFSET XKPRANGE_CC_SHADOW_END
42 #define XKPRANGE_UC_SHADOW_SIZE (XKPRANGE_UC_SIZE >> KASAN_SHADOW_SCALE_SHIFT)
43 #define XKPRANGE_UC_SHADOW_END (XKPRANGE_UC_KASAN_OFFSET + XKPRANGE_UC_SHADOW_SIZE)
45 /* WriteCombine */
46 #define XKPRANGE_WC_START WRITECOMBINE_BASE
47 #define XKPRANGE_WC_SIZE XRANGE_SIZE
48 #define XKPRANGE_WC_KASAN_OFFSET XKPRANGE_UC_SHADOW_END
49 #define XKPRANGE_WC_SHADOW_SIZE (XKPRANGE_WC_SIZE >> KASAN_SHADOW_SCALE_SHIFT)
50 #define XKPRANGE_WC_SHADOW_END (XKPRANGE_WC_KASAN_OFFSET + XKPRANGE_WC_SHADOW_SIZE)
52 /* VMALLOC (Cached or UnCached) */
53 #define XKVRANGE_VC_START MODULES_VADDR
54 #define XKVRANGE_VC_SIZE round_up(KFENCE_AREA_END - MODULES_VADDR + 1, PGDIR_SIZE)
55 #define XKVRANGE_VC_KASAN_OFFSET XKPRANGE_WC_SHADOW_END
56 #define XKVRANGE_VC_SHADOW_SIZE (XKVRANGE_VC_SIZE >> KASAN_SHADOW_SCALE_SHIFT)
57 #define XKVRANGE_VC_SHADOW_END (XKVRANGE_VC_KASAN_OFFSET + XKVRANGE_VC_SHADOW_SIZE)
59 /* KAsan shadow memory start right after vmalloc. */
60 #define KASAN_SHADOW_START round_up(KFENCE_AREA_END, PGDIR_SIZE)
61 #define KASAN_SHADOW_SIZE (XKVRANGE_VC_SHADOW_END - XKPRANGE_CC_KASAN_OFFSET)
62 #define KASAN_SHADOW_END (round_up(KASAN_SHADOW_START + KASAN_SHADOW_SIZE, PGDIR_SIZE) - 1)
64 #define XKPRANGE_CC_SHADOW_OFFSET (KASAN_SHADOW_START + XKPRANGE_CC_KASAN_OFFSET)
65 #define XKPRANGE_UC_SHADOW_OFFSET (KASAN_SHADOW_START + XKPRANGE_UC_KASAN_OFFSET)
66 #define XKPRANGE_WC_SHADOW_OFFSET (KASAN_SHADOW_START + XKPRANGE_WC_KASAN_OFFSET)
67 #define XKVRANGE_VC_SHADOW_OFFSET (KASAN_SHADOW_START + XKVRANGE_VC_KASAN_OFFSET)
69 extern bool kasan_early_stage;
70 extern unsigned char kasan_early_shadow_page[PAGE_SIZE];
72 #define kasan_mem_to_shadow kasan_mem_to_shadow
73 void *kasan_mem_to_shadow(const void *addr);
75 #define kasan_shadow_to_mem kasan_shadow_to_mem
76 const void *kasan_shadow_to_mem(const void *shadow_addr);
78 #define kasan_arch_is_ready kasan_arch_is_ready
79 static __always_inline bool kasan_arch_is_ready(void)
81 return !kasan_early_stage;
84 #define addr_has_metadata addr_has_metadata
85 static __always_inline bool addr_has_metadata(const void *addr)
87 return (kasan_mem_to_shadow((void *)addr) != NULL);
90 void kasan_init(void);
91 asmlinkage void kasan_early_init(void);
93 #endif
94 #endif