linux-kernel - Re: [PATCH 25/25] KVM: x86: Add CPUID bits missing from KVM_GET_SUPPORTED

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Message-ID: <9477e3e3-e9cf-4a6a-87d1-bb7836146ed0@intel.com>
Date: Thu, 12 Sep 2024 23:26:21 +0800
From: Xiaoyao Li <xiaoyao.li@...el.com>
To: Paolo Bonzini <pbonzini@...hat.com>
Cc: Rick Edgecombe <rick.p.edgecombe@...el.com>, seanjc@...gle.com,
 kvm@...r.kernel.org, kai.huang@...el.com, isaku.yamahata@...il.com,
 tony.lindgren@...ux.intel.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 25/25] KVM: x86: Add CPUID bits missing from
 KVM_GET_SUPPORTED_CPUID

On 9/12/2024 10:48 PM, Paolo Bonzini wrote:
> On Thu, Sep 12, 2024 at 4:45 PM Xiaoyao Li <xiaoyao.li@...el.com> wrote:
>>> KVM is not going to have any checks, it's only going to pass the
>>> CPUID to the TDX module and return an error if the check fails
>>> in the TDX module.
>>
>> If so, new feature can be enabled for TDs out of KVM's control.
>>
>> Is it acceptable?
> 
> It's the same as for non-TDX VMs, I think it's acceptable.

another question is for patch 24, will we keep the filtering of the 
configurable CPUDIDs in KVM_TDX_CAPABILITIES with KVM_GET_SUPPORTED_CPUID?

> Paolo
>