linux-kernel - Re: [PATCH 2/2] KVM: X86: Don't block vCPU if there is pending exception

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Date:   Wed, 13 Sep 2017 23:33:41 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Wanpeng Li <kernellwp@...il.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     Radim Krčmář <rkrcmar@...hat.com>,
        Wanpeng Li <wanpeng.li@...mail.com>
Subject: Re: [PATCH 2/2] KVM: X86: Don't block vCPU if there is pending
 exception

On 13/09/2017 13:04, Wanpeng Li wrote:
> From: Wanpeng Li <wanpeng.li@...mail.com>
> 
> Don't block vCPU if there is pending exception.
> 
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Cc: Radim Krčmář <rkrcmar@...hat.com>
> Signed-off-by: Wanpeng Li <wanpeng.li@...mail.com>
> ---
>  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 6069af8..1a0dce4 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -8452,6 +8452,9 @@ static inline bool kvm_vcpu_has_events(struct kvm_vcpu *vcpu)
>  	if (vcpu->arch.pv.pv_unhalted)
>  		return true;
>  
> +	if (vcpu->arch.exception.pending)
> +		return true;
> +
>  	if (kvm_test_request(KVM_REQ_NMI, vcpu) ||
>  	    (vcpu->arch.nmi_pending &&
>  	     kvm_x86_ops->nmi_allowed(vcpu)))
> 

Ok for 4.14-rc.

Reviewed-by: Paolo Bonzini <pbonzini@...hat.com>

Paolo