arch/arm64/include/asm/mte-def.h

File Facts

System

Linux kernel

Corpus path

arch/arm64/include/asm/mte-def.h

Extension

.h

Size

577 bytes

Lines

19

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

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

Detected Declarations

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

Annotated Snippet

#ifndef __ASM_MTE_DEF_H
#define __ASM_MTE_DEF_H

#define MTE_GRANULE_SIZE	UL(16)
#define MTE_GRANULE_MASK	(~(MTE_GRANULE_SIZE - 1))
#define MTE_GRANULES_PER_PAGE	(PAGE_SIZE / MTE_GRANULE_SIZE)
#define MTE_TAG_SHIFT		56
#define MTE_TAG_SIZE		4
#define MTE_TAG_MASK		GENMASK((MTE_TAG_SHIFT + (MTE_TAG_SIZE - 1)), MTE_TAG_SHIFT)
#define MTE_PAGE_TAG_STORAGE	(MTE_GRANULES_PER_PAGE * MTE_TAG_SIZE / 8)

#define __MTE_PREAMBLE		ARM64_ASM_PREAMBLE ".arch_extension memtag\n"

#endif /* __ASM_MTE_DEF_H  */

Annotation

• 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.