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Message-ID: <d1f70f8c-032e-4467-940c-18cf09c67eb2@intel.com> Date: Wed, 11 Jun 2025 22:34:48 +0800 From: Xiaoyao Li <xiaoyao.li@...el.com> To: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>, "kvm@...r.kernel.org" <kvm@...r.kernel.org>, "pbonzini@...hat.com" <pbonzini@...hat.com>, "seanjc@...gle.com" <seanjc@...gle.com>, "binbin.wu@...ux.intel.com" <binbin.wu@...ux.intel.com> Cc: "mikko.ylinen@...ux.intel.com" <mikko.ylinen@...ux.intel.com>, "Huang, Kai" <kai.huang@...el.com>, "Yao, Jiewen" <jiewen.yao@...el.com>, "Lindgren, Tony" <tony.lindgren@...el.com>, "Chatre, Reinette" <reinette.chatre@...el.com>, "Zhao, Yan Y" <yan.y.zhao@...el.com>, "Shutemov, Kirill" <kirill.shutemov@...el.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Hunter, Adrian" <adrian.hunter@...el.com>, "Yamahata, Isaku" <isaku.yamahata@...el.com> Subject: Re: [RFC PATCH 3/4] KVM: TDX: Exit to userspace for GetTdVmCallInfo On 6/11/2025 10:17 PM, Edgecombe, Rick P wrote: > On Wed, 2025-06-11 at 10:37 +0800, Xiaoyao Li wrote: >>> Maybe we can use a TDX specific opt-in interface instead of TDVMCALL >>> specific >>> interface. >>> But not sure we should add it now or later. >> >> For simplicity, I prefer separate opt-in interfaces, it makes code simpler. > > What is the problem with using the existing exit opt-in interface? It mixes up common KVM defined hypercall leafs (KVM_HC_*) with TDX specific TDVMCALL leafs. Surely it can work but it just doesn't look clean to me.
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