Re: [PATCH 18/29] KVM: MMU: Propagate the right fault back to theguest after gva_to_gpa

[Avi Kivity]

 On 09/10/2010 06:30 PM, Joerg Roedel wrote:
> This patch implements logic to make sure that either a
> page-fault/page-fault-vmexit or a nested-page-fault-vmexit
> is propagated back to the guest.
>
> @@ -338,6 +338,22 @@ void kvm_inject_page_fault(struct kvm_vcpu *vcpu)
>   	kvm_queue_exception_e(vcpu, PF_VECTOR, error_code);
>   }
>
> +void kvm_propagate_fault(struct kvm_vcpu *vcpu)
> +{
> +	u32 nested, error;
> +
> +	error   = vcpu->arch.fault.error_code;
> +	nested  = error&   PFERR_NESTED_MASK;
> +	error   = error&  ~PFERR_NESTED_MASK;
> +
> +	vcpu->arch.fault.error_code = error;
> +
> +	if (mmu_is_nested(vcpu)&&  !nested)
> +		vcpu->arch.nested_mmu.inject_page_fault(vcpu);
> +	else
> +		vcpu->arch.mmu.inject_page_fault(vcpu);
> +}
> +

Tacking a non-architectural bit on top of the error code is not very 
nice.  Can you move it to a separate vcpu->arch.fault.nested?

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

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