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Date:   Wed, 5 Jun 2019 12:09:42 +0200
From:   "" <>
To:     "Zhang, Tina" <>
Cc:     Zhenyu Wang <>,
        "" <>,
        "" <>,
        "Lv, Zhiyuan" <>,
        "Wang, Zhi A" <>,
        "Tian, Kevin" <>,
        "Yuan, Hang" <>,
        "" <>
Subject: Re: [RFC PATCH v2 1/3] vfio: Use capability chains to handle device
 specific irq


> > Really need to split for different planes? I'd like a
> > so user space can probe change for all.

> User space can choose to user different handlers according to the
> specific event. For example, user space might not want to handle every
> cursor event due to performance consideration. Besides, it can reduce
> the probe times, as we don't need to probe twice to make sure if both
> cursor plane and primary plane have been updated.

I'd suggest to use the value passed via eventfd for that, i.e. instead
of sending "1" unconditionally send a mask of changed planes.


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