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

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 03.12.12 at 18:43, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> On Mon, 2012-12-03 at 16:29 +0000, Wei Liu wrote:
>> Hi all
>> 
>> There has been discussion on extending number of event channels back in
>> September [0].
> 
> While we are changing the ABI anyway, it would be nice to consider the
> possibility for some small-ish number of per-vcpu evtchns.
> 
> These would potentially be useful for things like IPI vectors and such
> which every vcpu has.

While I agree to this, ...

> e.g. reusing the per-vcpu space in evtchn_pending_sel would give 32 or
> 64 which would be more than sufficient.

... I would have hoped for this field to retain its use as top level
selector.

Jan


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