linux-kernel - Re: [PATCH v13 006/113] KVM: x86: Introduce vm_type to differentiate default VMs from confidential VMs

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Date:   Wed, 15 Mar 2023 10:44:57 +0000
From:   "Huang, Kai" <kai.huang@...el.com>
To:     "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Yamahata, Isaku" <isaku.yamahata@...el.com>
CC:     "Christopherson,, Sean" <seanjc@...gle.com>,
        "Shahar, Sagi" <sagis@...gle.com>,
        "Li, Xiaoyao" <xiaoyao.li@...el.com>,
        "isaku.yamahata@...il.com" <isaku.yamahata@...il.com>,
        "Aktas, Erdem" <erdemaktas@...gle.com>,
        "sean.j.christopherson@...el.com" <sean.j.christopherson@...el.com>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "zhi.wang.linux@...il.com" <zhi.wang.linux@...il.com>,
        "dmatlack@...gle.com" <dmatlack@...gle.com>
Subject: Re: [PATCH v13 006/113] KVM: x86: Introduce vm_type to differentiate
 default VMs from confidential VMs

On Sun, 2023-03-12 at 10:55 -0700, isaku.yamahata@...el.com wrote:
>  
> -static bool kvm_is_vm_type_supported(unsigned long type)
> +bool __kvm_is_vm_type_supported(unsigned long type)
>  {
>  	return type == KVM_X86_DEFAULT_VM ||
>  	       (type == KVM_X86_PROTECTED_VM &&
>  	        IS_ENABLED(CONFIG_KVM_PROTECTED_VM) && tdp_enabled);
>  }
> +EXPORT_SYMBOL_GPL(__kvm_is_vm_type_supported);

Where is CONFIG_KVM_PROTECTED_VM introduced?