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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - arch/x86/include/asm/kasan.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_KASAN_H
3 #define _ASM_X86_KASAN_H
5 #include <linux/const.h>
6 #define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
9 * Compiler uses shadow offset assuming that addresses start
10 * from 0. Kernel addresses don't start from 0, so shadow
11 * for kernel really starts from compiler's shadow offset +
12 * 'kernel address space start' >> KASAN_SHADOW_SCALE_SHIFT
14 #define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET + \
15 ((-1UL << __VIRTUAL_MASK_SHIFT) >> 3))
17 * 47 bits for kernel address -> (47 - 3) bits for shadow
18 * 56 bits for kernel address -> (56 - 3) bits for shadow
20 #define KASAN_SHADOW_END (KASAN_SHADOW_START + (1ULL << (__VIRTUAL_MASK_SHIFT - 3)))
25 void __init
kasan_early_init(void);
26 void __init
kasan_init(void);
28 static inline void kasan_early_init(void) { }
29 static inline void kasan_init(void) { }