On Wed, 2020-05-13 at 16:37 +0200, Petr Mladek wrote: > The only common rules are: > > + The last console on the command line should always be the > preferred one when defined. > > + Consoles defined by the device (SPCR, device tree) are used > when there is no commandline. With the exception that on x86, SPCR is only used for early_con, we don't do add_preferred_console() at all for it. I sort-of understand why... the track record on BIOS quality out there being what it is, I could see this causing a number of systems start sending the console to a non-existent or non-wired serial port instead of the tty/gpu because the BIOS leave SPCR set/enabled for no reason. It may or may not be the case in practice but I don't see how we can figure that out without either a large campain of data collection from tons of systems (which will miss plenty) or just taking the chance & breaking people and see who screams :-) Cheers, Ben.
