i tried to allocate physical memory of 128k by calling kmalloc function, passing parameter of (128k-1)bytes, but the computer hanged. when i made it to 32k , the computer rebooted, i am using 2.2.14-5.0 kernel. same was the case with get_free_pages() service.. note:please cc the answer - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/