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Thu, 02 Jul 2026 08:26:30 -0700 (PDT) Received: from [10.20.4.146] ([149.62.207.101]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-493c6354926sm67312345e9.1.2026.07.02.08.26.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 02 Jul 2026 08:26:29 -0700 (PDT) Message-ID: Date: Thu, 2 Jul 2026 18:26:27 +0300 Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 12/15] KVM: TDX: Add in-kernel Quote generation To: Xu Yilun , kas@kernel.org, djbw@kernel.org, rick.p.edgecombe@intel.com, x86@kernel.org, peter.fang@intel.com Cc: linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, sohil.mehta@intel.com, yilun.xu@intel.com, baolu.lu@linux.intel.com, zhenzhong.duan@intel.com, xiaoyao.li@intel.com References: <20260522034128.3144354-1-yilun.xu@linux.intel.com> <20260522034128.3144354-13-yilun.xu@linux.intel.com> From: Nikolay Borisov Content-Language: en-US Autocrypt: addr=nik.borisov@suse.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 5/22/26 06:41, Xu Yilun wrote: > From: Peter Fang > > Provide an in-kernel path for TDX Quote generation when handling > TDG.VP.VMCALL, without requiring an exit to userspace. > > Use the core TDX API when the TDX Quoting extension is available. For > simplicity, each KVM guest checks for availability only once during > initialization. KVM does not handle Quoting service disruptions. I think calling this in-kernel quote generation vs user-spcae quote generation is misleading. Rather the distinction is : quote via the vmm or a quote generated by the tdx module/tdx extension. I think this should be the level at which the distinction is made. i.e tdx_get_quote_vmm vs tdx_get_quote_ext or some along those lines.