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Re: [Qemu-devel] [PATCH] vfio pci: kernel support of error recovery only

From: Michael S. Tsirkin
Subject: Re: [Qemu-devel] [PATCH] vfio pci: kernel support of error recovery only for non fatal error
Date: Mon, 20 Mar 2017 16:34:22 +0200

On Mon, Mar 20, 2017 at 08:30:56AM -0600, Alex Williamson wrote:
> > > What about the case where the user has not registered for receiving
> > > non-fatal errors, now we send an error signal on both error_detected
> > > and slot_reset.  Is that useful/desirable?
> > >   
> > 
> > Not desirable, but seems not harmful, guest user will stop anyway. How
> > to avoid this case gracefully seems not easy.
> "Not harmful" is presuming the behavior of the user.  QEMU might not be
> the only consumer of these events.  Is it possible to receive a
> slot_reset without first receiving an error_detected?  If not then we
> can easily track our action for one to decide on the behavior for the
> other.  Thanks,
> Alex

I would just pass maximum info to userspace and let it decide.


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