Hi, Current ion kernel mapping implementation uses vmap() to map previously allocated buffers into kernel virtual address space. On 32 bit platforms, vmap() might fail on large enough buffers due to the limited available vmalloc space. dma_buf_kmap() should guarantee that only one page is mapped at a time. So, probably it's better to implement dma_buf_kmap() by kmap() and not by vmap()? Thanks, Alexey _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
