Re: [Xen-devel] [PATCH 2/4] xenbus: limit when state is forced to closed

[JÃrgen GroÃ]

On 09.12.19 12:39, Roger Pau Monnà wrote:
> On Thu, Dec 05, 2019 at 02:01:21PM +0000, Paul Durrant wrote:
> > Only force state to closed in the case when the toolstack may need to
> > clean up. This can be detected by checking whether the state in xenstore
> > has been set to closing prior to device removal.
>
> I'm not sure I see the point of this, I would expect that a failure to
> probe or the removal of the device would leave the xenbus state as
> closed, which is consistent with the actual driver state.
>
> Can you explain what's the benefit of leaving a device without a
> driver in such unknown state?

And more concerning: did you check that no frontend/backend is
relying on the closed state to be visible without closing having been
set before?


Juergen