linux-kernel - Re: [PATCH 2/7] KVM-HDR: KVM Steal time implementation

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Message-ID: <4DF6BA66.1030009@redhat.com>
Date:	Mon, 13 Jun 2011 21:33:26 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Glauber Costa <glommer@...hat.com>
CC:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Avi Kivity <avi@...hat.com>,
	Anthony Liguori <aliguori@...ibm.com>,
	Eric B Munson <emunson@...bm.net>
Subject: Re: [PATCH 2/7] KVM-HDR: KVM Steal time implementation

On 06/13/2011 07:31 PM, Glauber Costa wrote:
> To implement steal time, we need the hypervisor to pass the guest information
> about how much time was spent running other processes outside the VM.
> This is per-vcpu, and using the kvmclock structure for that is an abuse
> we decided not to make.
>
> In this patchset, I am introducing a new msr, KVM_MSR_STEAL_TIME, that
> holds the memory area address containing information about steal time
>
> This patch contains the headers for it. I am keeping it separate to facilitate
> backports to people who wants to backport the kernel part but not the
> hypervisor, or the other way around.
>
> Signed-off-by: Glauber Costa<glommer@...hat.com>
> CC: Rik van Riel<riel@...hat.com>
> CC: Jeremy Fitzhardinge<jeremy.fitzhardinge@...rix.com>
> CC: Peter Zijlstra<peterz@...radead.org>
> CC: Avi Kivity<avi@...hat.com>
> CC: Anthony Liguori<aliguori@...ibm.com>
> CC: Eric B Munson<emunson@...bm.net>

Acked-by: Rik van Riel <riel@...hat.com>

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