linux-kernel - Re: [PATCH for-3.6] kvm: fix KVM_GET

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Message-ID: <20120827204742.GA5031@amt.cnet>
Date:	Mon, 27 Aug 2012 17:47:42 -0300
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	kvm@...r.kernel.org, Avi Kivity <avi@...hat.com>, gleb@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH for-3.6] kvm: fix KVM_GET_MSR for PV EOI

On Sun, Aug 26, 2012 at 06:00:29PM +0300, Michael S. Tsirkin wrote:
> KVM_GET_MSR was missing support for PV EOI,
> which is needed for migration.
> 
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> ---
> 
> Please consider this bugfix patch for 3.6.
> Thanks!
> 
>  arch/x86/kvm/x86.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 91a5958..ff5e985 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -1993,6 +1993,9 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
>  	case MSR_KVM_STEAL_TIME:
>  		data = vcpu->arch.st.msr_val;
>  		break;
> +	case MSR_KVM_PV_EOI_EN:
> +		data = vcpu->arch.pv_eoi.msr_val;
> +		break;
>  	case MSR_IA32_P5_MC_ADDR:
>  	case MSR_IA32_P5_MC_TYPE:
>  	case MSR_IA32_MCG_CAP:

Should increase KVM_SAVE_MSRS_BEGIN.
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