kernel/liveupdate/kexec_handover_debug.c

Source file repositories/reference/linux-study-clean/kernel/liveupdate/kexec_handover_debug.c

File Facts

System
Linux kernel
Corpus path
kernel/liveupdate/kexec_handover_debug.c
Extension
.c
Size
622 bytes
Lines
26
Domain
Core OS
Bucket
Scheduler, Processes, Timers, Sync, And Syscalls
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * kexec_handover_debug.c - kexec handover optional debug functionality
 * Copyright (C) 2025 Google LLC, Pasha Tatashin <pasha.tatashin@soleen.com>
 */

#define pr_fmt(fmt) "KHO: " fmt

#include "kexec_handover_internal.h"

bool kho_scratch_overlap(phys_addr_t phys, size_t size)
{
	phys_addr_t scratch_start, scratch_end;
	unsigned int i;

	for (i = 0; i < kho_scratch_cnt; i++) {
		scratch_start = kho_scratch[i].addr;
		scratch_end = kho_scratch[i].addr + kho_scratch[i].size;

		if (phys < scratch_end && (phys + size) > scratch_start)
			return true;
	}

	return false;
}

Annotation

Implementation Notes