On 09/28/2016 03:26 PM, Andy Lutomirski wrote:
>> Right, so what I think Vineet is asking is if we need to disable NMIs as
>> > well, we cannot on x86 disable NMIs so no.
>> >
> The same argument works here, too: an NMI won't set TIF_NEED_RESCHED
> without sending an IPI, so we can't miss a wakeup.
But what exact wakeup miss are we taking about here. If intr were NOT disabled,
how could this happen. Just trying to understand the need for "irqs-disabled" in
resume_{user,kernel}_*
The intr disabled before reg file restore makes complete sense though.
