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([2001:b07:6468:f312:9af8:e5f5:7516:fa89]) by smtp.googlemail.com with ESMTPSA id g16-20020a5d4890000000b002de99432fc8sm5812194wrq.49.2023.03.27.08.46.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 27 Mar 2023 08:46:31 -0700 (PDT) Message-ID: Date: Mon, 27 Mar 2023 17:46:30 +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> <151c3b04-31db-6a50-23af-c6886098c85c@redhat.com> From: Paolo Bonzini In-Reply-To: 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 3/27/23 17:28, Sean Christopherson wrote: >> 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? > No, I'll get that done today (I pinky swear this time). Ok, you can also send me a pull request if you prefer (or I can apply the patches to kvm/next myself of course). Paolo