arch/arm64/include/asm/dmi.h

File Facts

System

Linux kernel

Corpus path

arch/arm64/include/asm/dmi.h

Extension

.h

Size

850 bytes

Lines

32

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.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.

Dependency Surface

• linux/io.h
• linux/slab.h

Detected Declarations

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

Annotated Snippet

#ifndef __ASM_DMI_H
#define __ASM_DMI_H

#include <linux/io.h>
#include <linux/slab.h>

/*
 * According to section 2.3.6 of the UEFI spec, the firmware should not
 * request a virtual mapping for configuration tables such as SMBIOS.
 * This means we have to map them before use.
 */
#define dmi_early_remap(x, l)		ioremap_cache(x, l)
#define dmi_early_unmap(x, l)		iounmap(x)
#define dmi_remap(x, l)			ioremap_cache(x, l)
#define dmi_unmap(x)			iounmap(x)
#define dmi_alloc(l)			kzalloc(l, GFP_KERNEL)

#endif

Annotation

• Immediate include surface: `linux/io.h`, `linux/slab.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.