arch/s390/lib/expoline.S

File Facts

System

Linux kernel

Corpus path

arch/s390/lib/expoline.S

Extension

.S

Size

238 bytes

Lines

13

Domain

Architecture Layer

Bucket

arch/s390

Inferred role

Architecture Layer: arch/s390

Status

atlas-only

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/nospec-insn.h
• linux/linkage.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#include <asm/nospec-insn.h>
#include <linux/linkage.h>

.macro GEN_ALL_BR_THUNK_EXTERN
	.irp r1,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
	GEN_BR_THUNK_EXTERN %r\r1
	.endr
.endm

GEN_ALL_BR_THUNK_EXTERN

Annotation

• Immediate include surface: `asm/nospec-insn.h`, `linux/linkage.h`.
• Atlas domain: Architecture Layer / arch/s390.
• Implementation status: atlas-only.

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.