arch/x86/include/asm/xen/swiotlb-xen.h

File Facts

System

Linux kernel

Corpus path

arch/x86/include/asm/xen/swiotlb-xen.h

Extension

.h

Size

404 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

• 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_X86_SWIOTLB_XEN_H
#define _ASM_X86_SWIOTLB_XEN_H

int xen_swiotlb_fixup(void *buf, unsigned long nslabs);
int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
				unsigned int address_bits,
				dma_addr_t *dma_handle);
void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);

#endif /* _ASM_X86_SWIOTLB_XEN_H */

Annotation

• 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.