arch/loongarch/mm/maccess.c

Source file repositories/reference/linux-study-clean/arch/loongarch/mm/maccess.c

File Facts

System
Linux kernel
Corpus path
arch/loongarch/mm/maccess.c
Extension
.c
Size
275 bytes
Lines
11
Domain
Architecture Layer
Bucket
arch/loongarch
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.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only

#include <linux/uaccess.h>
#include <linux/kernel.h>

bool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size)
{
	/* highest bit set means kernel space */
	return (unsigned long)unsafe_src >> (BITS_PER_LONG - 1);
}

Annotation

Implementation Notes