Nicholas Piggin writes:
> On Wed, 25 Apr 2018 13:15:34 +1000
> Michael Ellerman wrote:
>> Nicholas Piggin writes:
>>
>> > The NMI IPI handler for a receiving CPU increments nmi_ipi_busy_count
>> > over the handler function call, which causes later smp_send_nmi_ipi()
>> > callers to spin until t
On Wed, 25 Apr 2018 13:15:34 +1000
Michael Ellerman wrote:
> Nicholas Piggin writes:
>
> > The NMI IPI handler for a receiving CPU increments nmi_ipi_busy_count
> > over the handler function call, which causes later smp_send_nmi_ipi()
> > callers to spin until the call is finished.
> >
> > The
Nicholas Piggin writes:
> The NMI IPI handler for a receiving CPU increments nmi_ipi_busy_count
> over the handler function call, which causes later smp_send_nmi_ipi()
> callers to spin until the call is finished.
>
> The smp_send_stop function never returns, so the busy count is never
> decremet
