linux-kernel - Re: [PATCH v13 16/26] KVM: SEV: Support SEV-SNP AP Creation NAE event

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Date: Fri, 19 Apr 2024 14:01:29 +0200
From: Paolo Bonzini <pbonzini@...hat.com>
To: Michael Roth <michael.roth@....com>
Cc: kvm@...r.kernel.org, linux-coco@...ts.linux.dev, linux-mm@...ck.org, 
	linux-crypto@...r.kernel.org, x86@...nel.org, linux-kernel@...r.kernel.org, 
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	thomas.lendacky@....com, hpa@...or.com, ardb@...nel.org, seanjc@...gle.com, 
	vkuznets@...hat.com, jmattson@...gle.com, luto@...nel.org, 
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	peterz@...radead.org, srinivas.pandruvada@...ux.intel.com, 
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	vbabka@...e.cz, kirill@...temov.name, ak@...ux.intel.com, tony.luck@...el.com, 
	sathyanarayanan.kuppuswamy@...ux.intel.com, alpergun@...gle.com, 
	jarkko@...nel.org, ashish.kalra@....com, nikunj.dadhania@....com, 
	pankaj.gupta@....com, liam.merwick@...cle.com, 
	Brijesh Singh <brijesh.singh@....com>
Subject: Re: [PATCH v13 16/26] KVM: SEV: Support SEV-SNP AP Creation NAE event

On Thu, Apr 18, 2024 at 9:45 PM Michael Roth <michael.roth@....com> wrote:
>          * the VMSA will be NULL if this vCPU is the destination for intrahost
>          * migration, and will be copied later.
>          */
> -       if (svm->sev_es.vmsa)
> +       if (!svm->sev_es.snp_has_guest_vmsa)
>                 svm->vmcb->control.vmsa_pa = __pa(svm->sev_es.vmsa);
>
>         /* Can't intercept CR register access, HV can't modify CR registers */

This needs to be svm->sev_es.vmsa && ... (see existing comment above the "if").

Paolo