arch/x86/include/uapi/asm/vsyscall.h

File Facts

System

Linux kernel

Corpus path

arch/x86/include/uapi/asm/vsyscall.h

Extension

.h

Size

278 bytes

Lines

14

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: syscall or user/kernel boundary

Status

core 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 participates in a user/kernel boundary; inspect argument validation, copy_from_user/copy_to_user, credentials, and dispatch target.

Dependency Surface

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

Detected Declarations

• enum vsyscall_num

Annotated Snippet

#ifndef _UAPI_ASM_X86_VSYSCALL_H
#define _UAPI_ASM_X86_VSYSCALL_H

enum vsyscall_num {
	__NR_vgettimeofday,
	__NR_vtime,
	__NR_vgetcpu,
};

#define VSYSCALL_ADDR (-10UL << 20)

#endif /* _UAPI_ASM_X86_VSYSCALL_H */

Annotation

• Detected declarations: `enum vsyscall_num`.
• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: core 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.