On Tue, Oct 16, 2018 at 10:48:44AM +0800, Chao Fan wrote: > Sorry for disturbing you again, I want to make sure this detail with you. > You mean that I need splite this as a function and put it to > cmdline.c, right? Extract that functionality into a generic helper so that handle_mem_options() and your get_acpi_rsdp() can call it instead of duplicating the code. Also, why aren't they both using cmdline_find_option() directly? If something's missing, extend cmdline_find_option() to serve your purposes too instead of copying the same code. Make more sense? -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.