summaryrefslogtreecommitdiffstats
path: root/arch/arm64/include/asm/kfence.h
blob: a81937fae9f6da772c6a3f0fc94fb19f019525a0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
/* SPDX-License-Identifier: GPL-2.0 */
/*
 * arm64 KFENCE support.
 *
 * Copyright (C) 2020, Google LLC.
 */

#ifndef __ASM_KFENCE_H
#define __ASM_KFENCE_H

#include <asm/set_memory.h>

static inline bool arch_kfence_init_pool(void) { return true; }

static inline bool kfence_protect_page(unsigned long addr, bool protect)
{
	set_memory_valid(addr, 1, !protect);

	return true;
}

#ifdef CONFIG_KFENCE
extern bool kfence_early_init;
static inline bool arm64_kfence_can_set_direct_map(void)
{
	return !kfence_early_init;
}
#else /* CONFIG_KFENCE */
static inline bool arm64_kfence_can_set_direct_map(void) { return false; }
#endif /* CONFIG_KFENCE */

#endif /* __ASM_KFENCE_H */