arch/xtensa/include/asm/kasan.h

Source file repositories/reference/linux-study-clean/arch/xtensa/include/asm/kasan.h

File Facts

System
Linux kernel
Corpus path
arch/xtensa/include/asm/kasan.h
Extension
.h
Size
954 bytes
Lines
42
Domain
Architecture Layer
Bucket
arch/xtensa
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __ASM_KASAN_H
#define __ASM_KASAN_H

#ifndef __ASSEMBLER__

#ifdef CONFIG_KASAN

#include <linux/kernel.h>
#include <linux/sizes.h>
#include <asm/kmem_layout.h>

#define KASAN_SHADOW_SCALE_SHIFT 3

/* Start of area covered by KASAN */
#define KASAN_START_VADDR __XTENSA_UL_CONST(0x90000000)
/* Start of the shadow map */
#define KASAN_SHADOW_START (XCHAL_PAGE_TABLE_VADDR + XCHAL_PAGE_TABLE_SIZE)
/* Size of the shadow map */
#define KASAN_SHADOW_SIZE (-KASAN_START_VADDR >> KASAN_SHADOW_SCALE_SHIFT)
/* End of the shadow map */
#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE)
/* Offset for mem to shadow address transformation */
#define KASAN_SHADOW_OFFSET __XTENSA_UL_CONST(CONFIG_KASAN_SHADOW_OFFSET)

void __init kasan_early_init(void);
void __init kasan_init(void);

#else

static inline void kasan_early_init(void)
{
}

static inline void kasan_init(void)
{
}

#endif
#endif
#endif

Annotation

Implementation Notes