On 2024-10-21, John Ogness <john.ogn...@linutronix.de> wrote: >On 2024-10-21, Ryo Takakura <ryotkk...@gmail.com> wrote: >>> Rather than removing the deferring, it would be better to convert the >>> console you are using to the new NBCON API. Then it would be able to >>> print direct and safe during panic. (printk_deferred does not affect >>> NBCON consoles.) What console driver are you using that you want to >>> see the messages on? >> >> I was working on qemu ppc64 this time but I am usually working on >> Raspberry Pi 4 (mostly for fun and study) which uses either of >> bcm2835-aux-uart or amba-pl011. It would be really nice to see them >> working as nbcon! >> I am thinking of taking a look at [0] but If there were any other >> references, I would really like to look into as well. >> >> [0] https://lore.kernel.org/lkml/87wn3zsz5x....@jogness.linutronix.de/ > >The lastest version of the series is here [1]. The series is still >undergoing revisions, however the changes are 8250-specific. The API for >nbcon consoles is already available since 6.12-rc1. You are certainly >welcome to try to convert one of those Raspi 4 drivers to the nbcon >interface. I would be happy to review it.
Thanks for sharing! I will take a look at it and definitley give a try! >John Ogness Sincerely, Ryo Takakura
