From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2BB70C433FE for ; Tue, 15 Mar 2022 21:49:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352091AbiCOVvI (ORCPT ); Tue, 15 Mar 2022 17:51:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347332AbiCOVvD (ORCPT ); Tue, 15 Mar 2022 17:51:03 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id BD5B25BE69 for ; Tue, 15 Mar 2022 14:49:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1647380989; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=GVTno3uwaKedC5z7RdpUfqlKxBXLrWKbeKGbJ46ufWc=; b=Bo9N7Bep0Lfa69BQUnKJ/vhw7QOADqhkpFGRyIaSRJaaoo5ed9Aek+s0fS8PHdOtlh1xyL JECMFlnyuZorO+JEtRZS4v4tPGkpQwzGCFw2gxiCD1T5BeHpRHIKG1KRGg1iIrI0Th/bpV QIiLeRPta068FFCyMMa/V1BSyo36084= Received: from mail-ed1-f70.google.com (mail-ed1-f70.google.com [209.85.208.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-669-8hyl80z_NWCBWopVBPi0UQ-1; Tue, 15 Mar 2022 17:49:48 -0400 X-MC-Unique: 8hyl80z_NWCBWopVBPi0UQ-1 Received: by mail-ed1-f70.google.com with SMTP id l14-20020aa7cace000000b003f7f8e1cbbdso194773edt.20 for ; Tue, 15 Mar 2022 14:49:48 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=GVTno3uwaKedC5z7RdpUfqlKxBXLrWKbeKGbJ46ufWc=; b=FUvxjqkb58eUVL0maobURunxBhCsj9feSqgEHUqoB0WAd6+2phbwEhNg9ai7aaU9Gj k0lXcm8I+mLLu0OOb2AkOGqy5fA5LpgPQqBIAM1MJnCWj8eRUzMWE9P2SAdS4tW/m4z6 QNTPqmJoODn0c5KG9Hw/s8bm1243FhxnZloKdVSBo4DBKluIWlsN/xfrpu3sArppcXLX BIJhwpKvrgTjgPAlgqCedYoFp2rrDUAMugDeTMEceFmRrtbfqgYS71+yVAdfc3ZhxkNS 1f7rRrecKEz36CzZsyAA7Z6tdxNTq1tv8dgIziS2hLMrkSc0zNwyA75jSb39T+zpeFK9 Igng== X-Gm-Message-State: AOAM531M54M5p+FhCYpJj7Dx/hr3le8PWzmSwMhWQRlW9EjwDBRMWBSE hxQ4NR9gYjk1x/CaFdQthAm75ftXYEW3MajKTNvKVG+kTjOMMq1zUFBAU4ATySnAIhYs7HfsbBp luZInqUFdiBb1Sfee3/1524hN X-Received: by 2002:a17:907:1c0a:b0:6da:7ac4:5349 with SMTP id nc10-20020a1709071c0a00b006da7ac45349mr24637599ejc.596.1647380987409; Tue, 15 Mar 2022 14:49:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwjb4JGyQJec/pMSJpOYHm1OGNj4Mo/pMqjdAHmpdwTdrKZ/ktCxntndWmQuh4d7xILgPsZkQ== X-Received: by 2002:a17:907:1c0a:b0:6da:7ac4:5349 with SMTP id nc10-20020a1709071c0a00b006da7ac45349mr24637585ejc.596.1647380987193; Tue, 15 Mar 2022 14:49:47 -0700 (PDT) Received: from ?IPV6:2001:b07:6468:f312:63a7:c72e:ea0e:6045? ([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 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