#ifndef __ASM_CACHEFLUSH_H
  #define __ASM_CACHEFLUSH_H
  
  /* Keep includes the same across arches.  */
  #include <linux/mm.h>
  
  /*
   * The cache doesn't need to be flushed when TLB entries change when
   * the cache is mapped to physical memory, not virtual memory
   */
  #define flush_cache_all()			do { } while (0)
  #define flush_cache_mm(mm)			do { } while (0)
  #define flush_cache_dup_mm(mm)			do { } while (0)
  #define flush_cache_range(vma, start, end)	do { } while (0)
  #define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)

  #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0

  #define flush_dcache_page(page)			do { } while (0)
  #define flush_dcache_mmap_lock(mapping)		do { } while (0)
  #define flush_dcache_mmap_unlock(mapping)	do { } while (0)
  #define flush_icache_range(start, end)		do { } while (0)
  #define flush_icache_page(vma,pg)		do { } while (0)
  #define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
  #define flush_cache_vmap(start, end)		do { } while (0)
  #define flush_cache_vunmap(start, end)		do { } while (0)
  
  #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 */