arch/arm64/include/asm/vdso.h

File Facts

System

Linux kernel

Corpus path

arch/arm64/include/asm/vdso.h

Extension

.h

Size

470 bytes

Lines

25

Domain

Architecture Layer

Bucket

arch/arm64

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.

Dependency Surface

• generated/vdso-offsets.h

Detected Declarations

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

Annotated Snippet

#ifndef __ASM_VDSO_H
#define __ASM_VDSO_H

#define __VDSO_PAGES    4

#ifndef __ASSEMBLER__

#include <generated/vdso-offsets.h>

#define VDSO_SYMBOL(base, name)						   \
({									   \
	(void *)(vdso_offset_##name + (unsigned long)(base)); \
})

extern char vdso_start[], vdso_end[];
extern char vdso32_start[], vdso32_end[];

#endif /* !__ASSEMBLER__ */

#endif /* __ASM_VDSO_H */

Annotation

• Immediate include surface: `generated/vdso-offsets.h`.
• Atlas domain: Architecture Layer / arch/arm64.
• 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.