RE: [Xen-devel][RFC]degradation on IPF due to hypercall set irq

["Xu, Anthony" <anthony.xu@xxxxxxxxx>]

Keir Fraser write on 2006年11月24日 23:29:
> On 24/11/06 14:45, "Xu, Anthony" <anthony.xu@xxxxxxxxx> wrote:
> 
>> Until now, I can't see hypercall is faster than share PIC line.
>> 
>> Can you enlighten me why we use hypercall?
> 
> I didn't change it for speed but because it's cleaner. I believe it
> can be made no slower, with a bit of effort. x86 certainly won't be
> reverting to the shared state.  

Can't share PIC line be done in a clean way?
I don't think so.
I think which one get better performance wins.

--Anthony


> 
>  -- Keir

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