linux-kernel - Re: [PATCH v2 4/4] KVM: arm: implements the kvm_arch_vcpu_in

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Date:   Tue, 8 Aug 2017 09:39:31 +0200
From:   Christoffer Dall <cdall@...aro.org>
To:     "Longpeng(Mike)" <longpeng2@...wei.com>
Cc:     pbonzini@...hat.com, rkrcmar@...hat.com, agraf@...e.com,
        borntraeger@...ibm.com, cohuck@...hat.com,
        christoffer.dall@...aro.org, marc.zyngier@....com,
        james.hogan@...tec.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, weidong.huang@...wei.com,
        arei.gonglei@...wei.com, wangxinxin.wang@...wei.com,
        longpeng.mike@...il.com, david@...hat.com
Subject: Re: [PATCH v2 4/4] KVM: arm: implements the kvm_arch_vcpu_in_kernel()

On Tue, Aug 08, 2017 at 12:05:35PM +0800, Longpeng(Mike) wrote:
> This implements the kvm_arch_vcpu_in_kernel() for ARM.
> 
> Signed-off-by: Longpeng(Mike) <longpeng2@...wei.com>
> ---
>  virt/kvm/arm/arm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
> index 862f820..b9f68e4 100644
> --- a/virt/kvm/arm/arm.c
> +++ b/virt/kvm/arm/arm.c
> @@ -418,7 +418,7 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
>  
>  bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu)
>  {
> -	return false;
> +	return vcpu_mode_priv(vcpu);
>  }
>  
>  /* Just ensure a guest exit from a particular CPU */
> -- 
> 1.8.3.1
> 
> 
I'm not taking any position on whether this series makes sense overall
or not (it's a bit concerning to do this without having measured a
benefit), but for the arm/arm64 change:

Acked-by: Christoffer Dall <cdall@...aro.org>