xref: /OK3568_Linux_fs/kernel/arch/arm64/include/asm/kfence.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  * arm64 KFENCE support.
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  * Copyright (C) 2020, Google LLC.
6*4882a593Smuzhiyun  */
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #ifndef __ASM_KFENCE_H
9*4882a593Smuzhiyun #define __ASM_KFENCE_H
10*4882a593Smuzhiyun 
11*4882a593Smuzhiyun #include <asm/cacheflush.h>
12*4882a593Smuzhiyun 
arch_kfence_init_pool(void)13*4882a593Smuzhiyun static inline bool arch_kfence_init_pool(void) { return true; }
14*4882a593Smuzhiyun 
kfence_protect_page(unsigned long addr,bool protect)15*4882a593Smuzhiyun static inline bool kfence_protect_page(unsigned long addr, bool protect)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun 	set_memory_valid(addr, 1, !protect);
18*4882a593Smuzhiyun 
19*4882a593Smuzhiyun 	return true;
20*4882a593Smuzhiyun }
21*4882a593Smuzhiyun 
22*4882a593Smuzhiyun #endif /* __ASM_KFENCE_H */
23