Re: [PATCH v7 9/9] kvm, mem-hotplug: Unpin and remove kvm_arch->apic_access_page.

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Il 20/09/2014 12:47, Tang Chen ha scritto:
> @@ -4534,8 +4539,7 @@ static void vmx_vcpu_reset(struct kvm_vcpu *vcpu)
>  	}
>  
>  	if (vm_need_virtualize_apic_accesses(vmx->vcpu.kvm))
> -		vmcs_write64(APIC_ACCESS_ADDR,
> -			     page_to_phys(vmx->vcpu.kvm->arch.apic_access_page));
> +		kvm_vcpu_reload_apic_access_page(vcpu);
>  
>  	if (vmx_vm_has_apicv(vcpu->kvm))
>  		memset(&vmx->pi_desc, 0, sizeof(struct pi_desc));

Please make the call unconditional in kvm_vcpu_reset.

> 
> diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
> index 9c8ae32..99378d7 100644
> --- a/arch/x86/kvm/svm.c
> +++ b/arch/x86/kvm/svm.c
> @@ -3624,6 +3624,11 @@ static bool svm_has_secondary_apic_access(struct kvm_vcpu *vcpu)
>  	return false;
>  }
>  
> +static void svm_set_apic_access_page_addr(struct kvm *kvm, hpa_t hpa)
> +{
> +	return;
> +}
> +
>  static int svm_vm_has_apicv(struct kvm *kvm)
>  {
>  	return 0;

I will ask you to modify the vmx_has_secondary_apic_access callback in
such a way that svm_set_apic_access_page_addr is not needed, so please
remove it from v8.

Paolo
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