Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Zong Li |
214 |
66.67% |
3 |
42.86% |
| Alexandre Ghiti |
95 |
29.60% |
1 |
14.29% |
| Atish Patra |
7 |
2.18% |
1 |
14.29% |
| Sebastien Van Cauwenberghe |
3 |
0.93% |
1 |
14.29% |
| Mike Rapoport |
2 |
0.62% |
1 |
14.29% |
| Total |
321 |
|
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);
static __always_inline int set_kernel_memory(char *startp, char *endp,
int (*set_memory)(unsigned long start,
int num_pages))
{
unsigned long start = (unsigned long)startp;
unsigned long end = (unsigned long)endp;
int num_pages = PAGE_ALIGN(end - start) >> PAGE_SHIFT;
return set_memory(start, num_pages);
}
#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 int set_memory_rw_nx(unsigned long addr, int numpages) { return 0; }
static inline int set_kernel_memory(char *startp, char *endp,
int (*set_memory)(unsigned long start,
int num_pages))
{
return 0;
}
#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 */