systems with MMUs, so we don't need them. */
#define flush_cache_all() ((void)0)
#define flush_cache_mm(mm) ((void)0)
+#define flush_cache_dup_mm(mm) ((void)0)
#define flush_cache_range(vma, start, end) ((void)0)
-#define flush_cache_page(vma, vmaddr) ((void)0)
+#define flush_cache_page(vma, vmaddr, pfn) ((void)0)
#define flush_dcache_page(page) ((void)0)
#define flush_dcache_mmap_lock(mapping) ((void)0)
#define flush_dcache_mmap_unlock(mapping) ((void)0)