Nicholas Piggin 5b73151fff powerpc: NMI IPI make NMI IPIs fully sychronous ... There is an asynchronous aspect to smp_send_nmi_ipi. The caller waits for all CPUs to call in to the handler, but it does not wait for completion of the handler. This is a needless complication, so remove it and always wait synchronously. The synchronous wait allows the caller to easily time out and clear the wait for completion (zero nmi_ipi_busy_count) in the case of badly behaved handlers. This would have prevented the recent smp_send_stop NMI IPI bug from causing the system to hang. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2018-07-24 22:03:14 +10:00
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asm	powerpc: NMI IPI make NMI IPIs fully sychronous	2018-07-24 22:03:14 +10:00
uapi/asm	powerpc: Wire up io_pgetevents	2018-06-23 21:43:21 +10:00