On Mon, Aug 16, 2021 at 12:05:50PM +0530, Srivatsa Vaddagiri wrote:
> * Michael S. Tsirkin <> [2021-08-16 01:35:46]:
>
> > So thinking about all this, quite early in the setup process we
> > have:
> >
> > /* Figure out what features the device supports. */
> > device_features = dev->config->get_features(dev);
> >
> >
> > isn't this sufficient? this will flush out
> > all writes and device can defer responding to reads
> > until reset is complete.
>
> Hmm not sure if that's possible in all MMIO devices? I think a while back Jason
> felt some of the MMIO devices, their registers could act as plain DRAM for
> reads, which means device can't block such reads?
>
> - vatsa
Is it worth bothering about theoretical issues though? Jason what is
your take?
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>
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