arch/x86/mm/physaddr.h

File Facts

System

Linux kernel

Corpus path

arch/x86/mm/physaddr.h

Extension

.h

Size

231 bytes

Lines

12

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

• asm/processor.h

Detected Declarations

• function phys_addr_valid

Annotated Snippet

#include <asm/processor.h>

static inline int phys_addr_valid(resource_size_t addr)
{
#ifdef CONFIG_PHYS_ADDR_T_64BIT
	return !(addr >> boot_cpu_data.x86_phys_bits);
#else
	return 1;
#endif
}

Annotation

• Immediate include surface: `asm/processor.h`.
• Detected declarations: `function phys_addr_valid`.
• 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.