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From:   Michael Kelley <mikelley@microsoft.com>
To:     Andrea Parri <parri.andrea@gmail.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>
CC:     KY Srinivasan <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        Sasha Levin <sashal@kernel.org>,
        vkuznets <vkuznets@redhat.com>, Dexuan Cui <decui@microsoft.com>,
        Wei Liu <wei.liu@kernel.org>
Subject: RE: [PATCH v3 3/3] Drivers: hv: vmbus: Add module parameter to cap
 the VMBus version
Thread-Topic: [PATCH v3 3/3] Drivers: hv: vmbus: Add module parameter to cap
 the VMBus version
Thread-Index: AQHVg05RRjxab/oj70GFm8EYihbfkadbrdtw
Date:   Tue, 15 Oct 2019 13:15:32 +0000
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References: <20191015114646.15354-1-parri.andrea@gmail.com>
 <20191015114646.15354-4-parri.andrea@gmail.com>
In-Reply-To: <20191015114646.15354-4-parri.andrea@gmail.com>
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From: Andrea Parri <parri.andrea@gmail.com> Sent: Tuesday, October 15, 2019=
 4:47 AM
>=20
> Currently, Linux guests negotiate the VMBus version with Hyper-V
> and use the highest available VMBus version they can connect to.
> This has some drawbacks: by using the highest available version,
> certain code paths are never executed and can not be tested when
> the guest runs on the newest host.
>=20
> Add the module parameter "max_version", to upper-bound the VMBus
> versions guests can negotiate.
>=20
> Suggested-by: Dexuan Cui <decui@microsoft.com>
> Signed-off-by: Andrea Parri <parri.andrea@gmail.com>
> ---
>  drivers/hv/connection.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
>=20

Reviewed-by: Michael Kelley <mikelley@microsoft.com>