linux-kernel - Re: [PATCH 09/25] KVM: TDX: Get system-wide info about TDX module on initialization

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Message-ID: <0591ce2b1470bc5495ca0b6a5aa1376262714e97.camel@intel.com>
Date: Wed, 21 Aug 2024 00:11:16 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To: "binbin.wu@...ux.intel.com" <binbin.wu@...ux.intel.com>
CC: "seanjc@...gle.com" <seanjc@...gle.com>, "Huang, Kai"
	<kai.huang@...el.com>, "Li, Xiaoyao" <xiaoyao.li@...el.com>,
	"isaku.yamahata@...il.com" <isaku.yamahata@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"tony.lindgren@...ux.intel.com" <tony.lindgren@...ux.intel.com>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>, "pbonzini@...hat.com"
	<pbonzini@...hat.com>, "Yamahata, Isaku" <isaku.yamahata@...el.com>
Subject: Re: [PATCH 09/25] KVM: TDX: Get system-wide info about TDX module on
 initialization

On Wed, 2024-08-14 at 14:18 +0800, Binbin Wu wrote:
> > +#define KVM_TDX_CPUID_NO_SUBLEAF       ((__u32)-1)
> > +
> > +struct kvm_tdx_cpuid_config {
> > +       __u32 leaf;
> > +       __u32 sub_leaf;
> > +       __u32 eax;
> > +       __u32 ebx;
> > +       __u32 ecx;
> > +       __u32 edx;
> > +};
> 
> I am wondering if there is any specific reason to define a new structure
> instead of using 'struct kvm_cpuid_entry2'?

GOod question. I don't think so.