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Re: [Xen-devel] [PROPOSAL] Event channel for SMP-VMs: per-vCPU or per-OS?

>>> On 29.10.13 at 16:20, Luwei Cheng <chengluwei@xxxxxxxxx> wrote:
> Since the I/O event is marked as pending for "the whole guest OS", not
> pending for a specific vCPU. To tickle a vCPU does not necessarily mean
> that the event is exactly for that vCPU, but can mean that we give the
> tickled vCPU a chance to serve it. But we do not refuse other vCPUs to
> get in early.
> Not sure whether my argument is sensible or not..:)

It's sensible, but it's only covering one side of the whole thing:
Avoiding the tickling. You continue to ignore the added
complexities in the code handling the event.


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