| /* 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 */ |
