On Tue, 31 Mar 2009, W. Martin Borgert wrote: > (Or, let Linux support eight instead of four serial ports by default, > so that I don't need to build a kernel at the first place.) it does up to 32, just boot with nr_uarts=16 or 8250.nr_uarts=16 CONFIG_SERIAL_8250_RUNTIME_UARTS=4 CONFIG_SERIAL_8250_NR_UARTS=32