linux-kernel - Re: [PATCH] Drivers: hv: util: Implement Time Synchronization using host time sample

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Message-ID: <20140923075610.GA10933@aepfle.de>
Date:	Tue, 23 Sep 2014 09:56:10 +0200
From:	Olaf Hering <olaf@...fle.de>
To:	Thomas Shao <huishao@...rosoft.com>
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	driverdev-devel@...uxdriverproject.org, apw@...onical.com,
	jasowang@...hat.com, kys@...rosoft.com, haiyangz@...rosoft.com
Subject: Re: [PATCH] Drivers: hv: util: Implement Time Synchronization using
 host time sample

On Tue, Sep 23, Thomas Shao wrote:

> In current hyper-v time sync service,it only gets the initial clock time
> from the host. It didn't process the following time samples. This change
> introduced a module parameter called host_time_sync. If it is set to true,
> the guest will periodically sychronize it's time with the host clock using
> host time sample. By default it is disabled, because we still recommend
> user to configure NTP for time synchronization.

Is that new knob a temporary thing to aid testing and development?
Because once it sneaks in it becomes some sort of ABIT.
So if the outcome of all that is that 'sync with host every once in a
while' will be the default, the new knob is not required.

Olaf
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