https://github.com/torvalds/linux
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Tip revision: 7877cb91f1081754a1487c144d85dc0d2e2e7fc4 authored by Linus Torvalds on 28 May 2023, 11:49:00 UTC
Linux 6.4-rc4
Tip revision: 7877cb9
maccess.c
// 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);
}
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