arch/x86/kernel/pmem.c

File Facts

System

Linux kernel

Corpus path

arch/x86/kernel/pmem.c

Extension

.c

Size

828 bytes

Lines

40

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/platform_device.h
• linux/init.h
• linux/ioport.h

Detected Declarations

• function Copyright
• function register_e820_pmem
• module init register_e820_pmem

Annotated Snippet

device_initcall(register_e820_pmem);

Annotation

• Immediate include surface: `linux/platform_device.h`, `linux/init.h`, `linux/ioport.h`.
• Detected declarations: `function Copyright`, `function register_e820_pmem`, `module init register_e820_pmem`.
• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: integration 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.