kernel_set_cachemode
extern void kernel_set_cachemode(void *addr, unsigned long size, int cmode);
EXPORT_SYMBOL(kernel_set_cachemode);
kernel_set_cachemode((void *)(dev->mem_start), 4096, IOMAP_NOCACHE_SER);
kernel_set_cachemode((void *)(dev->mem_start), 4096,
kernel_set_cachemode((void *)(dev_82596->mem_start), 4096,
kernel_set_cachemode(screen_base, screen_len,