mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-14 18:36:42 +07:00
5dff03813f
By default 3-level paging is used when the kernel is compiled with kasan support. Add 4-level paging option to support systems with more then 3TB of physical memory and to cover 4-level paging specific code with kasan as well. Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
31 lines
898 B
C
31 lines
898 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_KASAN_H
|
|
#define __ASM_KASAN_H
|
|
|
|
#include <asm/pgtable.h>
|
|
|
|
#ifdef CONFIG_KASAN
|
|
|
|
#define KASAN_SHADOW_SCALE_SHIFT 3
|
|
#ifdef CONFIG_KASAN_S390_4_LEVEL_PAGING
|
|
#define KASAN_SHADOW_SIZE \
|
|
(_AC(1, UL) << (_REGION1_SHIFT - KASAN_SHADOW_SCALE_SHIFT))
|
|
#else
|
|
#define KASAN_SHADOW_SIZE \
|
|
(_AC(1, UL) << (_REGION2_SHIFT - KASAN_SHADOW_SCALE_SHIFT))
|
|
#endif
|
|
#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
|
|
#define KASAN_SHADOW_START KASAN_SHADOW_OFFSET
|
|
#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE)
|
|
|
|
extern void kasan_early_init(void);
|
|
extern void kasan_copy_shadow(pgd_t *dst);
|
|
extern void kasan_free_early_identity(void);
|
|
#else
|
|
static inline void kasan_early_init(void) { }
|
|
static inline void kasan_copy_shadow(pgd_t *dst) { }
|
|
static inline void kasan_free_early_identity(void) { }
|
|
#endif
|
|
|
|
#endif
|