Re: Do we need to disable preemption in flush_tlb_range()?

Alexey Brodkin
2018-03-14T19:15:11Z

Ping!

On Thu, 2018-03-01 at 18:13 +0300, Alexey Brodkin wrote:
> Hi Vineet,
>
> Just noticed that in comments for smp_call_function_many() it is said that
> preemption must be disabled during its execution. And that function gets executed
> among other ways like that:
> -------------------------->8-----------------------
> flush_tlb_range()
> -> on_each_cpu_mask()
> -> smp_call_function_many()
> -------------------------->8-----------------------
>
> I'm not seeing right now any real problem with current implementation but
> some architectures do that thus the question.
>
> -Alexey