Re: [Xen-devel] increase evtchn limits

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 21/05/2010 10:25, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote:

>> There are 5 event channels per CPU (timer, reschedule IPI, SMP call function
>> IPI, SMP call function single IPI, and spinlock wakeup IPI).


It would be very easy to collapse the four IPIs onto one event channel plus
a bitmask of IPI reasons. Then that would be a much more economical two
event channels per CPU. And the change is a hell of a lot easier to
implement than extensible event channels. I bet it could be knocked together
in an hour.

 -- Keir



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