arch/x86/kernel/irqflags.S

File Facts

System

Linux kernel

Corpus path

arch/x86/kernel/irqflags.S

Extension

.S

Size

328 bytes

Lines

19

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.

Dependency Surface

• asm/asm.h
• linux/export.h
• linux/linkage.h

Detected Declarations

• export native_save_fl

Annotated Snippet

#include <asm/asm.h>
#include <linux/export.h>
#include <linux/linkage.h>

/*
 * unsigned long native_save_fl(void)
 */
.pushsection .noinstr.text, "ax"
SYM_FUNC_START(native_save_fl)
	ENDBR
	pushf
	pop %_ASM_AX
	RET
SYM_FUNC_END(native_save_fl)
.popsection
EXPORT_SYMBOL(native_save_fl)

Annotation

• Immediate include surface: `asm/asm.h`, `linux/export.h`, `linux/linkage.h`.
• Detected declarations: `export native_save_fl`.
• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: integration 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.