cregit-Linux how code gets into the kernel

Release 4.14 arch/x86/include/asm/kasan.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_KASAN_H

#define _ASM_X86_KASAN_H

#include <linux/const.h>

#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)

/*
 * Compiler uses shadow offset assuming that addresses start
 * from 0. Kernel addresses don't start from 0, so shadow
 * for kernel really starts from compiler's shadow offset +
 * 'kernel address space start' >> KASAN_SHADOW_SCALE_SHIFT
 */

#define KASAN_SHADOW_START      (KASAN_SHADOW_OFFSET + \
                                        ((-1UL << __VIRTUAL_MASK_SHIFT) >> 3))
/*
 * 47 bits for kernel address -> (47 - 3) bits for shadow
 * 56 bits for kernel address -> (56 - 3) bits for shadow
 */

#define KASAN_SHADOW_END        (KASAN_SHADOW_START + (1ULL << (__VIRTUAL_MASK_SHIFT - 3)))

#ifndef __ASSEMBLY__

#ifdef CONFIG_KASAN
void __init kasan_early_init(void);
void __init kasan_init(void);
#else

static inline void kasan_early_init(void) { }

Contributors

PersonTokensPropCommitsCommitProp
Andrey Ryabinin675.00%150.00%
Alexander Popov225.00%150.00%
Total8100.00%2100.00%


static inline void kasan_init(void) { }

Contributors

PersonTokensPropCommitsCommitProp
Andrey Ryabinin8100.00%1100.00%
Total8100.00%1100.00%

#endif #endif #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Andrey Ryabinin6088.24%240.00%
Alexander Popov45.88%120.00%
Kirill A. Shutemov34.41%120.00%
Greg Kroah-Hartman11.47%120.00%
Total68100.00%5100.00%
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