Re: [PATCH 3/3] riscv: Allow to enable PREEMPT_RT.

From: Palmer Dabbelt
Date: Fri Sep 06 2024 - 14:48:44 EST


On Fri, 06 Sep 2024 08:13:24 PDT (-0700), namcao@xxxxxxxxxxxxx wrote:
On Fri, Sep 06, 2024 at 12:59:06PM +0200, Sebastian Andrzej Siewior wrote:
It is really time.

riscv has all the required architecture related changes, that have been
identified over time, in order to enable PREEMPT_RT. With the recent
printk changes, the last known road block has been addressed.

Allow to enable PREEMPT_RT on riscv.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>

With the printk patches applied:

Tested-by: Nam Cao <namcao@xxxxxxxxxxxxx> # Visionfive 2


Thanks. LMK if you guys want me to take this through the RISC-V tree, but no big deal if you want it somewhere else -- and if there's some dependencies already going in through some sort of RT tree maybe that's just easier. So

Acked-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>

I don't have a test setup yet, but I figure it's a new feature so I'll just flip it on as a config post-rc1. Presumably this just works in the QEMU virt board, or is there some wizardry I'll need to copy?

Best regards,
Nam