arch/x86/um/vdso/vdso.lds.S

File Facts

System

Linux kernel

Corpus path

arch/x86/um/vdso/vdso.lds.S

Extension

.S

Size

740 bytes

Lines

32

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: arch/x86

Status

atlas-only

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

• vdso-layout.lds.S

Detected Declarations

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

Annotated Snippet

#define VDSO_PRELINK 0xffffffffff700000
#include "vdso-layout.lds.S"

/*
 * This controls what userland symbols we export from the vDSO.
 */
VERSION {
	LINUX_2.6 {
	global:
		clock_gettime;
		__vdso_clock_gettime;
		gettimeofday;
		__vdso_gettimeofday;
		time;
		__vdso_time;
	local: *;
	};
}

VDSO64_PRELINK = VDSO_PRELINK;

Annotation

• Immediate include surface: `vdso-layout.lds.S`.
• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: atlas-only.

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.