/* SPDX-License-Identifier: GPL-2.0 */#ifndef __ASM_CACHEFLUSH_H#define __ASM_CACHEFLUSH_H /* Keep includes the same across arches.  */#include <linux/mm.h> #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 /* * The cache doesn't need to be flushed when TLB entries change when * the cache is mapped to physical memory, not virtual memory */static inline void flush_cache_all(void){} static inline void flush_cache_mm(struct mm_struct *mm){} static inline void flush_cache_dup_mm(struct mm_struct *mm){} static inline void flush_cache_range(struct vm_area_struct *vma,				     unsigned long start,				     unsigned long end){} static inline void flush_cache_page(struct vm_area_struct *vma,				    unsigned long vmaddr,				    unsigned long pfn){} static inline void flush_dcache_page(struct page *page){} static inline void flush_dcache_mmap_lock(struct address_space *mapping){} static inline void flush_dcache_mmap_unlock(struct address_space *mapping){} static inline void flush_icache_range(unsigned long start, unsigned long end){} static inline void flush_icache_page(struct vm_area_struct *vma,				     struct page *page){} static inline void flush_icache_user_range(struct vm_area_struct *vma,					   struct page *page,					   unsigned long addr, int len){} static inline void flush_cache_vmap(unsigned long start, unsigned long end){} static inline void flush_cache_vunmap(unsigned long start, unsigned long end){} #define copy_to_user_page(vma, page, vaddr, dst, src, len) \	do { \		memcpy(dst, src, len); \		flush_icache_user_range(vma, page, vaddr, len); \	} while (0)#define copy_from_user_page(vma, page, vaddr, dst, src, len) \	memcpy(dst, src, len) #endif /* __ASM_CACHEFLUSH_H */