linux-kernel - Re: [PATCH v3 1/6] KVM-HDR: KVM Steal time implementation

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Message-ID: <4D5A8CCD.1070506@redhat.com>
Date:	Tue, 15 Feb 2011 16:25:17 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Glauber Costa <glommer@...hat.com>
CC:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Rik van Riel <riel@...hat.com>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v3 1/6] KVM-HDR: KVM Steal time implementation

On 02/11/2011 08:19 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.
>
>
> diff --git a/include/linux/kvm.h b/include/linux/kvm.h
> index ea2dc1a..233374a 100644
> --- a/include/linux/kvm.h
> +++ b/include/linux/kvm.h
> @@ -541,6 +541,7 @@ struct kvm_ppc_pvinfo {
>   #define KVM_CAP_PPC_GET_PVINFO 57
>   #define KVM_CAP_PPC_IRQ_LEVEL 58
>   #define KVM_CAP_ASYNC_PF 59
> +#define KVM_CAP_STEAL_TIME 60
>
>   #ifdef KVM_CAP_IRQ_ROUTING
>

This isn't related to the guest/host interface and should come with the 
hypervisor patch.

-- 
error compiling committee.c: too many arguments to function

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