linux-kernel - Re: [PATCH v2 09/11] KVM: SEV: define VM types for SEV and SEV-ES

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Date: Fri, 23 Feb 2024 08:55:32 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>
Cc: linux-kernel@...r.kernel.org, kvm@...r.kernel.org, michael.roth@....com, 
	aik@....com
Subject: Re: [PATCH v2 09/11] KVM: SEV: define VM types for SEV and SEV-ES

On Fri, Feb 23, 2024, Paolo Bonzini wrote:

Changelog...

> diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
> index 392b9c2e2ce1..87541c84d07e 100644
> --- a/arch/x86/kvm/svm/svm.c
> +++ b/arch/x86/kvm/svm/svm.c
> @@ -4087,6 +4087,11 @@ static void svm_cancel_injection(struct kvm_vcpu *vcpu)
>  
>  static int svm_vcpu_pre_run(struct kvm_vcpu *vcpu)
>  {
> +	struct kvm_sev_info *sev = &to_kvm_svm(vcpu->kvm)->sev_info;

Ugh, we really should have

static inline struct kvm_sev_info *to_kvm_sev(struct kvm *kvm)
{
	return &to_kvm_svm(vcpu->kvm)->sev_info;
}

> +
> +	if (sev->need_init)

And then this can be:

	if (to_kvm_sev(vcpu->kvm)->need_init)

> +		return -EINVAL;
> +
>  	return 1;
>  }
>  
> @@ -4888,6 +4893,11 @@ static void svm_vm_destroy(struct kvm *kvm)
>  
>  static int svm_vm_init(struct kvm *kvm)
>  {
> +	if (kvm->arch.vm_type) {
> +		struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info;
> +		sev->need_init = true;

And

	if (kvm->arch.vm_type)
		to_kvm_sev(vcpu->kvm)->need_init = true;