Re: [PATCH v5 3/9] KVM-HDR: KVM Steal time implementation

From: Eric B Munson
Date: Tue Jul 05 2011 - 15:36:27 EST


On Mon, 04 Jul 2011, 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@xxxxxxxxxx>
> CC: Rik van Riel <riel@xxxxxxxxxx>
> CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
> CC: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> CC: Avi Kivity <avi@xxxxxxxxxx>
> CC: Anthony Liguori <aliguori@xxxxxxxxxx>
> CC: Eric B Munson <emunson@xxxxxxxxx>

Tested-by: Eric B Munson <emunson@xxxxxxxxx>

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