1*5b301409SPatricia Alfonso /* SPDX-License-Identifier: GPL-2.0 */ 2*5b301409SPatricia Alfonso #ifndef __ASM_UM_KASAN_H 3*5b301409SPatricia Alfonso #define __ASM_UM_KASAN_H 4*5b301409SPatricia Alfonso 5*5b301409SPatricia Alfonso #include <linux/init.h> 6*5b301409SPatricia Alfonso #include <linux/const.h> 7*5b301409SPatricia Alfonso 8*5b301409SPatricia Alfonso #define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL) 9*5b301409SPatricia Alfonso 10*5b301409SPatricia Alfonso /* used in kasan_mem_to_shadow to divide by 8 */ 11*5b301409SPatricia Alfonso #define KASAN_SHADOW_SCALE_SHIFT 3 12*5b301409SPatricia Alfonso 13*5b301409SPatricia Alfonso #ifdef CONFIG_X86_64 14*5b301409SPatricia Alfonso #define KASAN_HOST_USER_SPACE_END_ADDR 0x00007fffffffffffUL 15*5b301409SPatricia Alfonso /* KASAN_SHADOW_SIZE is the size of total address space divided by 8 */ 16*5b301409SPatricia Alfonso #define KASAN_SHADOW_SIZE ((KASAN_HOST_USER_SPACE_END_ADDR + 1) >> \ 17*5b301409SPatricia Alfonso KASAN_SHADOW_SCALE_SHIFT) 18*5b301409SPatricia Alfonso #else 19*5b301409SPatricia Alfonso #error "KASAN_SHADOW_SIZE is not defined for this sub-architecture" 20*5b301409SPatricia Alfonso #endif /* CONFIG_X86_64 */ 21*5b301409SPatricia Alfonso 22*5b301409SPatricia Alfonso #define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET) 23*5b301409SPatricia Alfonso #define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE) 24*5b301409SPatricia Alfonso 25*5b301409SPatricia Alfonso #ifdef CONFIG_KASAN 26*5b301409SPatricia Alfonso void kasan_init(void); 27*5b301409SPatricia Alfonso extern int kasan_um_is_ready; 28*5b301409SPatricia Alfonso 29*5b301409SPatricia Alfonso #ifdef CONFIG_STATIC_LINK 30*5b301409SPatricia Alfonso #define kasan_arch_is_ready() (kasan_um_is_ready) 31*5b301409SPatricia Alfonso #endif 32*5b301409SPatricia Alfonso #else kasan_init(void)33*5b301409SPatricia Alfonsostatic inline void kasan_init(void) { } 34*5b301409SPatricia Alfonso #endif /* CONFIG_KASAN */ 35*5b301409SPatricia Alfonso 36*5b301409SPatricia Alfonso #endif /* __ASM_UM_KASAN_H */ 37