RE: [PATCH vfio 11/11] vfio/virtio: Introduce a vfio driver over virtio devices

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> From: Michael S. Tsirkin <mst@xxxxxxxxxx>
> Sent: Thursday, October 12, 2023 5:00 PM

> I am instead talking about devices that work with existing legacy linux drivers
> with no traps.
> 
Yep, I understood.

> > I am not expecting OASIS to do anything extra for legacy registers.
> >
> > [1] The device MUST reset when 0 is written to device_status, and present a 0
> in device_status once that is done.
> > [2] After writing 0 to device_status, the driver MUST wait for a read
> > of device_status to return 0 before reinitializing the device.
> 
> We can add a note explaining that legacy drivers do not wait after doing reset,
> that is not a problem.
> If someone wants to make a device that works with existing legacy linux drivers,
> they can do that.
> Won't work with all drivers though, which is why oasis did not want to
> standardize this.

Ok. thanks.
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