arch/riscv/include/asm/cfi.h

File Facts

System

Linux kernel

Corpus path

arch/riscv/include/asm/cfi.h

Extension

.h

Size

485 bytes

Lines

25

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/bug.h

Detected Declarations

• struct pt_regs
• function handle_cfi_failure

Annotated Snippet

#ifndef _ASM_RISCV_CFI_H
#define _ASM_RISCV_CFI_H

/*
 * Clang Control Flow Integrity (CFI) support.
 *
 * Copyright (C) 2023 Google LLC
 */
#include <linux/bug.h>

struct pt_regs;

#ifdef CONFIG_CFI
enum bug_trap_type handle_cfi_failure(struct pt_regs *regs);
#define __bpfcall
#else
static inline enum bug_trap_type handle_cfi_failure(struct pt_regs *regs)
{
	return BUG_TRAP_TYPE_NONE;
}
#endif /* CONFIG_CFI */

#endif /* _ASM_RISCV_CFI_H */

Annotation

• Immediate include surface: `linux/bug.h`.
• Detected declarations: `struct pt_regs`, `function handle_cfi_failure`.
• Atlas domain: Architecture Layer / arch/riscv.
• 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.