162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */
262306a36Sopenharmony_ci/*
362306a36Sopenharmony_ci * arch/arm/include/asm/kasan.h
462306a36Sopenharmony_ci *
562306a36Sopenharmony_ci * Copyright (c) 2015 Samsung Electronics Co., Ltd.
662306a36Sopenharmony_ci * Author: Andrey Ryabinin <ryabinin.a.a@gmail.com>
762306a36Sopenharmony_ci *
862306a36Sopenharmony_ci */
962306a36Sopenharmony_ci
1062306a36Sopenharmony_ci#ifndef __ASM_KASAN_H
1162306a36Sopenharmony_ci#define __ASM_KASAN_H
1262306a36Sopenharmony_ci
1362306a36Sopenharmony_ci#ifdef CONFIG_KASAN
1462306a36Sopenharmony_ci
1562306a36Sopenharmony_ci#include <asm/kasan_def.h>
1662306a36Sopenharmony_ci
1762306a36Sopenharmony_ci#define KASAN_SHADOW_SCALE_SHIFT 3
1862306a36Sopenharmony_ci
1962306a36Sopenharmony_ci/*
2062306a36Sopenharmony_ci * The compiler uses a shadow offset assuming that addresses start
2162306a36Sopenharmony_ci * from 0. Kernel addresses don't start from 0, so shadow
2262306a36Sopenharmony_ci * for kernel really starts from 'compiler's shadow offset' +
2362306a36Sopenharmony_ci * ('kernel address space start' >> KASAN_SHADOW_SCALE_SHIFT)
2462306a36Sopenharmony_ci */
2562306a36Sopenharmony_ci
2662306a36Sopenharmony_ciasmlinkage void kasan_early_init(void);
2762306a36Sopenharmony_ciextern void kasan_init(void);
2862306a36Sopenharmony_ci
2962306a36Sopenharmony_ci#else
3062306a36Sopenharmony_cistatic inline void kasan_init(void) { }
3162306a36Sopenharmony_ci#endif
3262306a36Sopenharmony_ci
3362306a36Sopenharmony_ci#endif
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