arch/um/include/shared/mem.h

File Facts

System

Linux kernel

Corpus path

arch/um/include/shared/mem.h

Extension

.h

Size

476 bytes

Lines

23

Domain

Architecture Layer

Bucket

arch/um

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

• function uml_to_phys

Annotated Snippet

#ifndef __MEM_H__
#define __MEM_H__

extern int phys_mapping(unsigned long phys, unsigned long long *offset_out);

extern unsigned long uml_physmem;
static inline unsigned long uml_to_phys(void *virt)
{
	return(((unsigned long) virt) - uml_physmem);
}

static inline void *uml_to_virt(unsigned long phys)
{
	return((void *) uml_physmem + phys);
}

#endif

Annotation

• Detected declarations: `function uml_to_phys`.
• Atlas domain: Architecture Layer / arch/um.
• 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.