On 02/29/2016 11:40 AM, Markus Armbruster wrote: > This started as an attempt to update ivshmem_device_spec.txt for > clarity, accuracy and completeness while working on its code, and > quickly became a full rewrite. Since the diff would be useless > anyway, I'm using the opportunity to rename the file to > ivshmem-spec.txt. > > I tried hard to ensure the new text contradicts neither the old text > nor the code. If the new text contradicts the old text but not the > code, it's probably a bug in the old text. If the new text > contradicts both, its probably a bug in the new text. > > Signed-off-by: Markus Armbruster <arm...@redhat.com> > ---
> +If the server terminates without sending disconnect notifications for > +its connected clients, the clients can elect to continue. They can > +communicate with each other normally, but won't receive disconnect > +notification on disconnect, and no new clients can connect. There is > +no way for the clients to connect to a restarted the server. The s/the server/server/ > +device is not capable to tell guest software whether the server is > +still up. Wow - lots of shortcomings in the server protocol. Food for thought for future improvements, but I'm happy with your approach of just documenting pitfalls for now. > + > +Known bugs: > + > +* The protocol changed incompatibly in QEMU 2.5. Before, messages > + were native endian long, and there was no version number. > + > +* The protocol is poorly designed. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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