arch/riscv/kernel/head.h

File Facts

System

Linux kernel

Corpus path

arch/riscv/kernel/head.h

Extension

.h

Size

416 bytes

Lines

21

Domain

Architecture Layer

Bucket

arch/riscv

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.

Dependency Surface

• linux/linkage.h
• linux/init.h

Detected Declarations

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

Annotated Snippet

#ifndef __ASM_HEAD_H
#define __ASM_HEAD_H

#include <linux/linkage.h>
#include <linux/init.h>

extern atomic_t hart_lottery;

asmlinkage void __init setup_vm(uintptr_t dtb_pa);

#ifdef CONFIG_RISCV_BOOT_SPINWAIT
extern void *__cpu_spinwait_stack_pointer[];
extern void *__cpu_spinwait_task_pointer[];
#endif

#endif /* __ASM_HEAD_H */

Annotation

• Immediate include surface: `linux/linkage.h`, `linux/init.h`.
• Atlas domain: Architecture Layer / arch/riscv.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.