arch/s390/boot/sclp_early_core.c

File Facts

System

Linux kernel

Corpus path

arch/s390/boot/sclp_early_core.c

Extension

.c

Size

327 bytes

Lines

12

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

• boot.h
• ../../../drivers/s390/char/sclp_early_core.c

Detected Declarations

• function sclp_early_setup_buffer

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
#include "boot.h"
#include "../../../drivers/s390/char/sclp_early_core.c"

/* SCLP early buffer must stay page-aligned and below 2GB */
static char __sclp_early_sccb[EXT_SCCB_READ_SCP] __aligned(PAGE_SIZE);

void sclp_early_setup_buffer(void)
{
	sclp_early_set_buffer(&__sclp_early_sccb);
}

Annotation

• Immediate include surface: `boot.h`, `../../../drivers/s390/char/sclp_early_core.c`.
• Detected declarations: `function sclp_early_setup_buffer`.
• 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.