Re: [PATCH 3/3] KVM, SEV: Add support for SEV-ES local migration

[Brijesh Singh]

On 6/21/21 11:31 AM, Peter Gonda wrote:

> @@ -1196,8 +1299,19 @@ static int sev_local_send(struct kvm *kvm, struct kvm_sev_cmd *argp)
>   	INIT_LIST_HEAD(&entry->regions_list);
>   	list_replace_init(&sev->regions_list, &entry->regions_list);
>   
> +	if (sev_es_guest(kvm)) {
> +		/*
> +		 * If this is an ES guest, we need to move each VMCB's VMSA into a
> +		 * list for migration.
> +		 */
> +		entry->es_enabled = true;
> +		entry->ap_jump_table = sev->ap_jump_table;
> +		if (create_vmsa_list(kvm, entry))
> +			goto e_listdel;
> +	}
> +

the patch looks good. Similar to the previous patch, do we need to check 
for the SEV guest state >= LAUNCH_UPDATE to be sure that VMSA's are 
encrypted before we go about sharing it with the new VMM ?

-Brijesh