arch/riscv/include/asm/set_memory.h

Source file repositories/reference/linux-study-clean/arch/riscv/include/asm/set_memory.h

File Facts

System
Linux kernel
Corpus path
arch/riscv/include/asm/set_memory.h
Extension
.h
Size
2049 bytes
Lines
64
Domain
Architecture Layer
Bucket
arch/riscv
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

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);
int set_direct_map_valid_noflush(struct page *page, unsigned nr, bool valid);
bool kernel_page_present(struct page *page);

#endif /* __ASSEMBLER__ */

#if defined(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 */

#define PECOFF_SECTION_ALIGNMENT        0x1000
#define PECOFF_FILE_ALIGNMENT           0x200

#endif /* _ASM_RISCV_SET_MEMORY_H */

Annotation

Implementation Notes