From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/um/include/asm/kasan.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 arch/um/include/asm/kasan.h (limited to 'arch/um/include/asm/kasan.h') diff --git a/arch/um/include/asm/kasan.h b/arch/um/include/asm/kasan.h new file mode 100644 index 000000000..0d6547f4e --- /dev/null +++ b/arch/um/include/asm/kasan.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_UM_KASAN_H +#define __ASM_UM_KASAN_H + +#include +#include + +#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL) + +/* used in kasan_mem_to_shadow to divide by 8 */ +#define KASAN_SHADOW_SCALE_SHIFT 3 + +#ifdef CONFIG_X86_64 +#define KASAN_HOST_USER_SPACE_END_ADDR 0x00007fffffffffffUL +/* KASAN_SHADOW_SIZE is the size of total address space divided by 8 */ +#define KASAN_SHADOW_SIZE ((KASAN_HOST_USER_SPACE_END_ADDR + 1) >> \ + KASAN_SHADOW_SCALE_SHIFT) +#else +#error "KASAN_SHADOW_SIZE is not defined for this sub-architecture" +#endif /* CONFIG_X86_64 */ + +#define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET) +#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE) + +#ifdef CONFIG_KASAN +void kasan_init(void); +void kasan_map_memory(void *start, unsigned long len); +extern int kasan_um_is_ready; + +#ifdef CONFIG_STATIC_LINK +#define kasan_arch_is_ready() (kasan_um_is_ready) +#endif +#else +static inline void kasan_init(void) { } +#endif /* CONFIG_KASAN */ + +#endif /* __ASM_UM_KASAN_H */ -- cgit v1.2.3