#Linux #kernel patches to allow enabling #PREEMPT_RT (aka proper #realtime support) for x86, ARM64, and Risc-V were posted for review:

lore.kernel.org/lkml/202409061…

"The printk bits required for PREEMPT_RT are sitting in linux-next. This was the last known roadblock for PREEMPT_RT. The RT queue has additionally the "atomic console" for the 8250 UART which is not yet in linux-next.[…]"

See also these earlier other related toots:

fosstodon.org/@kernellogger/11…
fosstodon.org/@kernellogger/11…