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 X-Spam-Level: X-Spam-Status: No, score=-7.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46935C433E9 for ; Thu, 25 Feb 2021 11:29:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECD2A64F10 for ; Thu, 25 Feb 2021 11:29:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235776AbhBYL3A (ORCPT ); Thu, 25 Feb 2021 06:29:00 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:53549 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235256AbhBYL2Y (ORCPT ); Thu, 25 Feb 2021 06:28:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1614252414; 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=sWESMD0nckHAI0xFpXZL4oIkaF2/ZscfrAoYu7OfI+w=; b=LbssIS6RXN08uAPydQKG5f46Ql2Y18zrewLfWv0NgkBtqFS2GKKJzN+Yo1x0Hc9mMrHfDG jxLOnPvw1pDQDLeuOHs+UeX4Y8JFDAUCqzmpgmj+9q3q33B8KmO2Pjo29vL/BxpLtV4lFY MHmct2hw6ADJrgbjOKnI5WaaYcg++qY= Received: from mail-ej1-f70.google.com (mail-ej1-f70.google.com [209.85.218.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-571-CHxn0uKQNQi73Q05q8DeMQ-1; Thu, 25 Feb 2021 06:26:52 -0500 X-MC-Unique: CHxn0uKQNQi73Q05q8DeMQ-1 Received: by mail-ej1-f70.google.com with SMTP id b15so2294284ejv.4 for ; Thu, 25 Feb 2021 03:26:52 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=sWESMD0nckHAI0xFpXZL4oIkaF2/ZscfrAoYu7OfI+w=; b=eQyaFmJnXDWpjB+k8bwotaW/HkX/ZPY4geQu+4GKJh8iZlEX1lcdMNO2jZ6wkQFmbb Hs8GzAeRu8Q6e8RLmZCl+RmSEdogKeyM67J1O3T+m1e+cEyvoptAR7el2cTOtsnSads/ 3+XD6SNK16stIxVKvQxsHZ5jZt3RuVR3LbU+rWxkJ/sH+vt4DwmROxuqq2/jW1JqB/Gs CtgUiYZg/lBUIVj0IURoTRlQcY/A1X9pJkvQ09bucAqnhI9GSPeTHIx02GbHGn6kSYZH OYODwKQhnJqHcosyKGj6XCzKPci8fm2/lJveAKUbSphX+1yEpeCMoCyc7NwQ4a4mQ5kU AcWw== X-Gm-Message-State: AOAM533XcB1TzpwVwtqSQrhPi9lE58l630CszjDW9ARni7VtY1XzIhN0 oDaZCqLLBKa8e1v8Ek7pmjvfp3eaTiP6YNazY2ACw7uVuCMbgdrKJQ39mf5817s8IRSiIfhBpGR UTJO/wZ56gN3jQtf/6TfqVnB9 X-Received: by 2002:a17:906:2b0a:: with SMTP id a10mr2214740ejg.513.1614252411243; Thu, 25 Feb 2021 03:26:51 -0800 (PST) X-Google-Smtp-Source: ABdhPJz+FV6cFCWq34Zp4VXzSaCx9CjsJto7qwRC97dXBeI5c95SCD9qPGVFJCozP5ss3voP39HZCA== X-Received: by 2002:a17:906:2b0a:: with SMTP id a10mr2214723ejg.513.1614252411050; Thu, 25 Feb 2021 03:26:51 -0800 (PST) Received: from ?IPv6:2001:b07:6468:f312:c8dd:75d4:99ab:290a? ([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id dm20sm3237866edb.59.2021.02.25.03.26.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 25 Feb 2021 03:26:50 -0800 (PST) Subject: Re: [RFC] KVM: x86: Support KVM VMs sharing SEV context To: Sean Christopherson Cc: Nathan Tempelman , thomas.lendacky@amd.com, x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, srutherford@google.com, rientjes@google.com, brijesh.singh@amd.com, Ashish.Kalra@amd.com, Nathaniel McCallum , Marc Orr , "Hyunwook (Wooky) Baek" References: <20210224085915.28751-1-natet@google.com> <04b37d71-c887-660b-5046-17dec4bb4115@redhat.com> From: Paolo Bonzini Message-ID: Date: Thu, 25 Feb 2021 12:26:49 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 24/02/21 17:58, Sean Christopherson wrote: > That being said, is there a strong need to get this into 5.12? AIUI, this hasn't > had any meaningful testing, selftests/kvm-unit-tests or otherwise. Pushing out > to 5.13 might give us a good chance of getting some real testing before merging, > depending on the readiness of SEV testing support. Note that I don't mean including this in the merge window. However, I know that there are multiple people working on alternative SEV live migration support, and as long as we are sure that the API is simple and useful, it should be okay to merge this for rc2 or rc3. Paolo