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Date: Wed, 12 Mar 2014 20:41:36 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Thomas Gleixner <tglx@linutronix.de>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>
CC: joeyli <jlee@suse.com>, Julian Wollrath <jwollrath@web.de>, x86@kernel.org,
        LKML <linux-kernel@vger.kernel.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        John Stultz <john.stultz@linaro.org>, "Ted Ts'o" <tytso@mit.edu>,
        Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [RESEND] Fast TSC calibration fails with v3.14-rc1 and later
References: <20140310110410.5b2218f6@ilfaris> <alpine.DEB.2.02.1403121722030.18573@ionos.tec.linutronix.de> <alpine.DEB.2.02.1403121729060.18573@ionos.tec.linutronix.de> <1554867.utJVyPuT6A@vostro.rjw.lan> <alpine.DEB.2.02.1403130049500.18573@ionos.tec.linutronix.de>
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On 03/12/2014 05:54 PM, Thomas Gleixner wrote:
> 
> From the timekeeping POV there is absolutely no need to set the wall
> clock time early. The kernel boot phase does not care about wall time
> at all. We should have it done before we hit userspace, but not even
> that is a hard requirement.
> 

This is a key observation, I believe.

	-hpa