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([2001:b07:6468:f312:9af8:e5f5:7516:fa89]) by smtp.googlemail.com with ESMTPSA id r12-20020a50c00c000000b00501d2f10d19sm10349379edb.20.2023.03.27.08.19.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 27 Mar 2023 08:19:56 -0700 (PDT) Message-ID: <151c3b04-31db-6a50-23af-c6886098c85c@redhat.com> Date: Mon, 27 Mar 2023 17:19:55 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH 0/6] KVM: x86: Unhost the *_CMD MSR mess Content-Language: en-US To: Sean Christopherson Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Nathan Chancellor , Emanuele Giuseppe Esposito , Pawan Gupta , Jim Mattson References: <20230322011440.2195485-1-seanjc@google.com> From: Paolo Bonzini In-Reply-To: <20230322011440.2195485-1-seanjc@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-0.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE autolearn=unavailable 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 3/22/23 02:14, Sean Christopherson wrote: > Revert the FLUSH_L1D enabling, which has multiple fatal bugs, clean up > the existing PRED_CMD handling, and reintroduce FLUSH_L1D virtualization > without inheriting the mistakes made by PRED_CMD. > > The last patch hardens SVM against one of the bugs introduced in the > FLUSH_L1D enabling. > > I'll post KUT patches tomorrow. I have the tests written (and they found > bugs in my code, :shocked-pikachu:), just need to write the changelogs. > Wanted to get this out sooner than later as I'm guessing I'm not the only > one whose VMs won't boot on Intel CPUs... Hi Sean, did you post them? Paolo