Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Zong Li |
180 |
68.44% |
3 |
42.86% |
| Atish Patra |
42 |
15.97% |
1 |
14.29% |
| Geert Uytterhoeven |
29 |
11.03% |
1 |
14.29% |
| Mike Rapoport |
9 |
3.42% |
1 |
14.29% |
| Sebastien Van Cauwenberghe |
3 |
1.14% |
1 |
14.29% |
| Total |
263 |
|
7 |
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2019 SiFive
*/
#ifndef _ASM_RISCV_SET_MEMORY_H
#define _ASM_RISCV_SET_MEMORY_H
#ifndef __ASSEMBLY__
/*
* Functions to change memory attributes.
*/
#ifdef CONFIG_MMU
int set_memory_ro(unsigned long addr, int numpages);
int set_memory_rw(unsigned long addr, int numpages);
int set_memory_x(unsigned long addr, int numpages);
int set_memory_nx(unsigned long addr, int numpages);
int set_memory_rw_nx(unsigned long addr, int numpages);
void protect_kernel_text_data(void);
#else
static inline int set_memory_ro(unsigned long addr, int numpages) { return 0; }
static inline int set_memory_rw(unsigned long addr, int numpages) { return 0; }
static inline int set_memory_x(unsigned long addr, int numpages) { return 0; }
static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; }
static inline void protect_kernel_text_data(void) {}
static inline int set_memory_rw_nx(unsigned long addr, int numpages) { return 0; }
#endif
#if defined(CONFIG_64BIT) && defined(CONFIG_STRICT_KERNEL_RWX)
void protect_kernel_linear_mapping_text_rodata(void);
#else
static inline void protect_kernel_linear_mapping_text_rodata(void) {}
#endif
int set_direct_map_invalid_noflush(struct page *page);
int set_direct_map_default_noflush(struct page *page);
bool kernel_page_present(struct page *page);
#endif /* __ASSEMBLY__ */
#ifdef CONFIG_STRICT_KERNEL_RWX
#ifdef CONFIG_64BIT
#define SECTION_ALIGN (1 << 21)
#else
#define SECTION_ALIGN (1 << 22)
#endif
#else /* !CONFIG_STRICT_KERNEL_RWX */
#define SECTION_ALIGN L1_CACHE_BYTES
#endif /* CONFIG_STRICT_KERNEL_RWX */
#endif /* _ASM_RISCV_SET_MEMORY_H */