arch/s390/include/asm/fault.h

File Facts

System

Linux kernel

Corpus path

arch/s390/include/asm/fault.h

Extension

.h

Size

730 bytes

Lines

29

Domain

Architecture Layer

Bucket

arch/s390

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_S390_FAULT_H
#define _ASM_S390_FAULT_H

union teid {
	unsigned long val;
	struct {
		unsigned long addr : 52; /* Translation-exception Address */
		unsigned long fsi  : 2;	 /* Access Exception Fetch/Store Indication */
		unsigned long	   : 2;
		unsigned long b56  : 1;
		unsigned long	   : 3;
		unsigned long b60  : 1;
		unsigned long b61  : 1;
		unsigned long as   : 2;	 /* ASCE Identifier */
	};
};

enum {
	TEID_FSI_UNKNOWN = 0, /* Unknown whether fetch or store */
	TEID_FSI_STORE	 = 1, /* Exception was due to store operation */
	TEID_FSI_FETCH	 = 2  /* Exception was due to fetch operation */
};

#endif /* _ASM_S390_FAULT_H */

Annotation

• Atlas domain: Architecture Layer / arch/s390.
• 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.