Linux Audio
Check our new training course
Embedded Linux Audio
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_KASAN_H #define __ASM_KASAN_H #ifndef __ASSEMBLY__ #include <linux/linkage.h> #include <linux/mmzone.h> #include <asm/addrspace.h> #include <asm/io.h> #include <asm/pgtable.h> #define KASAN_SHADOW_SCALE_SHIFT 3 #define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL) #define XRANGE_SHIFT (48) /* Valid address length */ #define XRANGE_SHADOW_SHIFT (PGDIR_SHIFT + PAGE_SHIFT - 3) /* Used for taking out the valid address */ #define XRANGE_SHADOW_MASK GENMASK_ULL(XRANGE_SHADOW_SHIFT - 1, 0) /* One segment whole address space size */ #define XRANGE_SIZE (XRANGE_SHADOW_MASK + 1) /* 64-bit segment value. */ #define XKPRANGE_UC_SEG (0x8000) #define XKPRANGE_CC_SEG (0x9000) #define XKVRANGE_VC_SEG (0xffff) /* Cached */ #define XKPRANGE_CC_START CACHE_BASE #define XKPRANGE_CC_SIZE XRANGE_SIZE #define XKPRANGE_CC_KASAN_OFFSET (0) #define XKPRANGE_CC_SHADOW_SIZE (XKPRANGE_CC_SIZE >> KASAN_SHADOW_SCALE_SHIFT) #define XKPRANGE_CC_SHADOW_END (XKPRANGE_CC_KASAN_OFFSET + XKPRANGE_CC_SHADOW_SIZE) /* UnCached */ #define XKPRANGE_UC_START UNCACHE_BASE #define XKPRANGE_UC_SIZE XRANGE_SIZE #define XKPRANGE_UC_KASAN_OFFSET XKPRANGE_CC_SHADOW_END #define XKPRANGE_UC_SHADOW_SIZE (XKPRANGE_UC_SIZE >> KASAN_SHADOW_SCALE_SHIFT) #define XKPRANGE_UC_SHADOW_END (XKPRANGE_UC_KASAN_OFFSET + XKPRANGE_UC_SHADOW_SIZE) /* VMALLOC (Cached or UnCached) */ #define XKVRANGE_VC_START MODULES_VADDR #define XKVRANGE_VC_SIZE round_up(KFENCE_AREA_END - MODULES_VADDR + 1, PGDIR_SIZE) #define XKVRANGE_VC_KASAN_OFFSET XKPRANGE_UC_SHADOW_END #define XKVRANGE_VC_SHADOW_SIZE (XKVRANGE_VC_SIZE >> KASAN_SHADOW_SCALE_SHIFT) #define XKVRANGE_VC_SHADOW_END (XKVRANGE_VC_KASAN_OFFSET + XKVRANGE_VC_SHADOW_SIZE) /* KAsan shadow memory start right after vmalloc. */ #define KASAN_SHADOW_START round_up(KFENCE_AREA_END, PGDIR_SIZE) #define KASAN_SHADOW_SIZE (XKVRANGE_VC_SHADOW_END - XKPRANGE_CC_KASAN_OFFSET) #define KASAN_SHADOW_END round_up(KASAN_SHADOW_START + KASAN_SHADOW_SIZE, PGDIR_SIZE) #define XKPRANGE_CC_SHADOW_OFFSET (KASAN_SHADOW_START + XKPRANGE_CC_KASAN_OFFSET) #define XKPRANGE_UC_SHADOW_OFFSET (KASAN_SHADOW_START + XKPRANGE_UC_KASAN_OFFSET) #define XKVRANGE_VC_SHADOW_OFFSET (KASAN_SHADOW_START + XKVRANGE_VC_KASAN_OFFSET) extern bool kasan_early_stage; extern unsigned char kasan_early_shadow_page[PAGE_SIZE]; #define kasan_mem_to_shadow kasan_mem_to_shadow void *kasan_mem_to_shadow(const void *addr); #define kasan_shadow_to_mem kasan_shadow_to_mem const void *kasan_shadow_to_mem(const void *shadow_addr); #define kasan_arch_is_ready kasan_arch_is_ready static __always_inline bool kasan_arch_is_ready(void) { return !kasan_early_stage; } #define addr_has_metadata addr_has_metadata static __always_inline bool addr_has_metadata(const void *addr) { return (kasan_mem_to_shadow((void *)addr) != NULL); } void kasan_init(void); asmlinkage void kasan_early_init(void); #endif #endif
