arch/arm64/include/asm/neon.h

File Facts

System

Linux kernel

Corpus path

arch/arm64/include/asm/neon.h

Extension

.h

Size

429 bytes

Lines

20

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• asm/fpsimd.h

Detected Declarations

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

Annotated Snippet

#ifndef __ASM_NEON_H
#define __ASM_NEON_H

#include <linux/types.h>
#include <asm/fpsimd.h>

#define cpu_has_neon()		system_supports_fpsimd()

void kernel_neon_begin(struct user_fpsimd_state *);
void kernel_neon_end(struct user_fpsimd_state *);

#endif /* ! __ASM_NEON_H */

Annotation

• Immediate include surface: `linux/types.h`, `asm/fpsimd.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.