Re: [PATCH v2 2/4] KVM: Switch assigned device IRQ forwarding to threaded handler

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Am 02.11.2010 18:44, Michael S. Tsirkin wrote:
> On Tue, Nov 02, 2010 at 04:49:18PM +0100, Jan Kiszka wrote:
>> This improves the IRQ forwarding for assigned devices: By using the
>> kernel's threaded IRQ scheme, we can get rid of the latency-prone work
>> queue and simplify the code in the same run.
> 
> Interesting. Do you see any latency improvements from this?

Haven't measured, but I was primarily thinking of real-time scenarios,
ie. setups where you may want adjust the threaded IRQ priority -
something you cannot do with the shared kevent thread.

Jan

-- 
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
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