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SubjectRE: [PATCH 0/2] Drivers: hv: vmbus: Miscellaneous improvements
Date
> From: linux-hyperv-owner@vger.kernel.org
> <linux-hyperv-owner@vger.kernel.org> On Behalf Of Andrea Parri
> Sent: Monday, October 7, 2019 9:31 AM
>
> Hi all,
>
> The patchset:
>
> - simplifies/refactors the VMBus negotiation code by introducing
> the table of VMBus protocol versions (patch 1/2),
>
> - enables VMBus protocol versions 5.1 and 5.2 (patch 2/2).
>
> Thanks,
> Andrea
>
> Andrea Parri (2):
> Drivers: hv: vmbus: Introduce table of VMBus protocol versions
> Drivers: hv: vmbus: Enable VMBus protocol versions 5.1 and 5.2

Should we add a module parameter to allow the user to specify a lower
protocol version, when the VM runs on the latest host?

This can be useful for testing and debugging purpose: the variable
"vmbus_proto_version" is referenced by the vmbus driver itself and
some VSC drivers: if we always use the latest available proto version,
some code paths can not be tested on the latest hosts.

Thanks,
-- Dexuan

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