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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (C) 2019 SiFive
- */
- #ifndef _ASM_RISCV_SET_MEMORY_H
- #define _ASM_RISCV_SET_MEMORY_H
- #ifndef __ASSEMBLY__
- /*
- * Functions to change memory attributes.
- */
- #ifdef CONFIG_MMU
- int set_memory_ro(unsigned long addr, int numpages);
- int set_memory_rw(unsigned long addr, int numpages);
- int set_memory_x(unsigned long addr, int numpages);
- int set_memory_nx(unsigned long addr, int numpages);
- #else
- static inline int set_memory_ro(unsigned long addr, int numpages) { return 0; }
- static inline int set_memory_rw(unsigned long addr, int numpages) { return 0; }
- static inline int set_memory_x(unsigned long addr, int numpages) { return 0; }
- static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; }
- #endif
- int set_direct_map_invalid_noflush(struct page *page);
- int set_direct_map_default_noflush(struct page *page);
- #endif /* __ASSEMBLY__ */
- #ifdef CONFIG_ARCH_HAS_STRICT_KERNEL_RWX
- #ifdef CONFIG_64BIT
- #define SECTION_ALIGN (1 << 21)
- #else
- #define SECTION_ALIGN (1 << 22)
- #endif
- #else /* !CONFIG_ARCH_HAS_STRICT_KERNEL_RWX */
- #define SECTION_ALIGN L1_CACHE_BYTES
- #endif /* CONFIG_ARCH_HAS_STRICT_KERNEL_RWX */
- #endif /* _ASM_RISCV_SET_MEMORY_H */
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