Do we need to disable preemption in flush_tlb_range()?

[Vineet Gupta]

+CC Peter since we have his attention ;-)

On 03/01/2018 07:13 AM, 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-----------------------

In general I prefer not to - Peter what say you ?

> 
> I'm not seeing right now any real problem with current implementation but
> some architectures do that thus the question.
> 
> -Alexey
>