arch/x86/realmode/rm/trampoline_common.S

File Facts

System

Linux kernel

Corpus path

arch/x86/realmode/rm/trampoline_common.S

Extension

.S

Size

410 bytes

Lines

15

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: arch/x86

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

• 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

.section ".rodata","a"
	.balign	16

/*
 * When a bootloader hands off to the kernel in 32-bit mode an
 * IDT with a 2-byte limit and 4-byte base is needed. When a boot
 * loader hands off to a kernel 64-bit mode the base address
 * extends to 8-bytes. Reserve enough space for either scenario.
 */
SYM_DATA_START_LOCAL(tr_idt)
	.short  0
	.quad   0
SYM_DATA_END(tr_idt)

Annotation

• Atlas domain: Architecture Layer / arch/x86.
• 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.