33 lines
680 B
C
33 lines
680 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* arm64 KFENCE support.
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*
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* Copyright (C) 2020, Google LLC.
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*/
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#ifndef __ASM_KFENCE_H
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#define __ASM_KFENCE_H
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#include <asm/set_memory.h>
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static inline bool arch_kfence_init_pool(void) { return true; }
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static inline bool kfence_protect_page(unsigned long addr, bool protect)
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{
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set_memory_valid(addr, 1, !protect);
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return true;
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}
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#ifdef CONFIG_KFENCE
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extern bool kfence_early_init;
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static inline bool arm64_kfence_can_set_direct_map(void)
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{
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return !kfence_early_init;
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}
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#else /* CONFIG_KFENCE */
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static inline bool arm64_kfence_can_set_direct_map(void) { return false; }
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#endif /* CONFIG_KFENCE */
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#endif /* __ASM_KFENCE_H */
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