Re: [PATCH kvmtool v2 00/13] Implement reset of virtio devices

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On Thu, Jan 10, 2019 at 02:12:37PM +0000, Julien Thierry wrote:
> This series was developped by Jean-Philippe and is needed for a series
> I'll be posting shortly after to load firmwares on arm kvmtool.
> 
> Currently, when a guest tries to reset a device, a lot of ressources
> aren't reset (threads keep running, virtio queue keep their state, etc).
> 
> When the guest only does the reset to initialize the device and there
> were no previous users, there is no noticeable issue. But when a guest
> has a firmare + Linux, if the firmware uses a virtio device, Linux will
> fail to probe that device.
> 
> This series aim to properly reset the virtio resources when the guests
> requests it.
> 
> Reset of net vhost is unsupported for now.
> 
> Patch 1 is a bug fix on ioeventfd
> Patch 2-6 provide the core support so devices can implement their reset
> Patch 7-13 implements the reset for the various virtio devices

Cheers, I'll pick this up. There's a vague comment in patch 10 about aio
being busted. If that's the case then we should either fix it or remove
it...

Will
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