[PATCH v5] um: Enable preemption in UML

Anton Ivanov anton.ivanov at cambridgegreys.com
Fri Sep 22 03:55:48 PDT 2023


On 22/09/2023 10:55, Johannes Berg wrote:
> On Fri, 2023-09-22 at 11:51 +0200, Johannes Berg wrote:
>> On Fri, 2023-09-22 at 10:19 +0100, Anton Ivanov wrote:
>>>> So maybe that works - perhaps with a big comment?
>>> Ack. Will add this to the patch and run it through its paces.
>>>
>> We can also just get rid of it entirely:
>>
> And then we can remove all the skas0 stuff, including init_thread_regs
> and all.
>
> Seems the cost would be basically that we now pagefault everything
> that's used between fork() and exec()? But is that so much and so
> important?

Needs testing :)

Let's get the PREEMPT out of the door first.

>
> johannes
>
-- 
Anton R. Ivanov
Cambridgegreys Limited. Registered in England. Company Number 10273661
https://www.cambridgegreys.com/




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