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([2001:b07:6468:f312:63a7:c72e:ea0e:6045]) by smtp.googlemail.com with ESMTPSA id o3-20020a17090637c300b006d8631b2935sm79932ejc.186.2022.03.15.14.49.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Mar 2022 14:49:46 -0700 (PDT) Message-ID: Date: Tue, 15 Mar 2022 22:49:44 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: [RFC PATCH v5 010/104] KVM: TDX: Make TDX VM type supported Content-Language: en-US To: Kai Huang , Isaku Yamahata Cc: isaku.yamahata@intel.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Jim Mattson , erdemaktas@google.com, Connor Kuehl , Sean Christopherson References: <0596db2913da40660e87d5005167c623cee14765.1646422845.git.isaku.yamahata@intel.com> <18a150fd2e0316b4bae283d244f856494e0dfefd.camel@intel.com> <20220315210350.GE1964605@ls.amr.corp.intel.com> <9b90aaac2d55674550d35ce5a4ddd604825423c3.camel@intel.com> From: Paolo Bonzini In-Reply-To: <9b90aaac2d55674550d35ce5a4ddd604825423c3.camel@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-3.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE, SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/15/22 22:47, Kai Huang wrote: >> The intention is that developers can exercise the new code step-by-step even if >> the TDX KVM isn't complete. > What is the purpose/value to allow developers to exercise the new code step-by- > step? Userspace cannot create TD successfully anyway until all patches are > ready. We can move this to the end when the patch is committed, but I think there is value in showing that the series works (for partial definitions of "work") at every step of the enablement process. Paolo