Re: [Xen-devel] [RFC] Extending numbers of event channels

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 04.12.12 at 12:29, George Dunlap <dunlapg@xxxxxxxxx> wrote:
> On Mon, Dec 3, 2012 at 6:52 PM, David Vrabel <david.vrabel@xxxxxxxxxx>wrote:
> 
>> On 03/12/12 16:29, Wei Liu wrote:
>> > Hi all
>> >
>> > There has been discussion on extending number of event channels back in
>> > September [0].
>>
>> It seems that the decision has been made to go for this N-level
>> approach.  Were any other methods considered?
>>
>> Would a per-VCPU ring of pending events work?  The ABI will be easier to
>> extend in the future for more event channels.  The guest side code will
>> be simpler.  It will be easier to fairly service the events as they will
>> be processed in the order they were raised.
>>
> 
> Not having looked in depth at either solution, it does seem like having
> something like this, rather than an ever-growing array if bits that needs
> to be examined, would be simpler and more scalable.

Surely more scalable, but simpler?

Jan


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