Re: [PATCH kvm-unit-tests v2 4/6] s390x: smp: Create and use a non-waiting CPU stop

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On Fri, 2022-03-11 at 18:38 +0100, Eric Farman wrote:
> When stopping a CPU, kvm-unit-tests serializes/waits for everything
> to finish, in order to get a consistent result whenever those
> functions are used.
> 
> But to test the SIGP STOP itself, these additional measures could
> mask other problems. For example, did the STOP work, or is the CPU
> still operating?
> 
> Let's create a non-waiting SIGP STOP and use it here, to ensure that
> the CPU is correctly stopped. A smp_cpu_stopped() call will still
> be used to see that the SIGP STOP has been processed, and the state
> of the CPU can be used to determine whether the test passes/fails.
> 
> Signed-off-by: Eric Farman <farman@xxxxxxxxxxxxx>
> Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>

Reviewed-by: Nico Boehr <nrb@xxxxxxxxxxxxx>



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