arch/loongarch/include/asm/set_memory.h

File Facts

System

Linux kernel

Corpus path

arch/loongarch/include/asm/set_memory.h

Extension

.h

Size

723 bytes

Lines

23

Domain

Architecture Layer

Bucket

arch/loongarch

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.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef _ASM_LOONGARCH_SET_MEMORY_H
#define _ASM_LOONGARCH_SET_MEMORY_H

/*
 * Functions to change memory attributes.
 */
int set_memory_x(unsigned long addr, int numpages);
int set_memory_nx(unsigned long addr, int numpages);
int set_memory_ro(unsigned long addr, int numpages);
int set_memory_rw(unsigned long addr, int numpages);

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

#endif /* _ASM_LOONGARCH_SET_MEMORY_H */

Annotation

• Atlas domain: Architecture Layer / arch/loongarch.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.