[PATCH v10] um: Enable preemption in UML

[Johannes Berg]

On Tue, 2024-07-02 at 10:25 +0200, Johannes Berg wrote:
> From: Anton Ivanov <anton.ivanov at cambridgegreys.com>
> 
> Since userspace state is saved in the MM process, kernel using
> FPU still doesn't really need to do anything, so this really
> is as simple as enabling preemption. The irq critical section
> in sigio_handler() needs preempt_disable()/preempt_enable().

For the record, my main interest in this is to unlock debugging for RCU
lists, sleep, etc.

johannes