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Subject: Re: [PATCH v2 4/6] KVM-GST: KVM Steal time registration
From: Peter Zijlstra <peterz@infradead.org>
To: Glauber Costa <glommer@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, aliguori@us.ibm.com,
        Rik van Riel <riel@redhat.com>,
        Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>,
        Avi Kivity <avi@redhat.com>
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Date: Mon, 31 Jan 2011 12:11:37 +0100
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On Fri, 2011-01-28 at 14:52 -0500, Glauber Costa wrote:
> +       /*
> +        * using nanoseconds introduces noise, which accumulates easily
> +        * leading to big steal time values. We want, however, to keep the
> +        * interface nanosecond-based for future-proofness. The hypervisor may
> +        * adopt a similar strategy, but we can't rely on that.
> +        */
> +       delta /= NSEC_PER_MSEC;
> +       delta *= NSEC_PER_MSEC; 

I really doubt that claim..