arch/x86/include/uapi/asm/hwcap2.h

File Facts

System

Linux kernel

Corpus path

arch/x86/include/uapi/asm/hwcap2.h

Extension

.h

Size

324 bytes

Lines

14

Domain

Architecture Layer

Bucket

arch/x86

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

• linux/const.h

Detected Declarations

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

Annotated Snippet

#ifndef _ASM_X86_HWCAP2_H
#define _ASM_X86_HWCAP2_H

#include <linux/const.h>

/* MONITOR/MWAIT enabled in Ring 3 */
#define HWCAP2_RING3MWAIT		_BITUL(0)

/* Kernel allows FSGSBASE instructions available in Ring 3 */
#define HWCAP2_FSGSBASE			_BITUL(1)

#endif

Annotation

• Immediate include surface: `linux/const.h`.
• Atlas domain: Architecture Layer / arch/x86.
• 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.